CN108015245B - Hot blank corner crack online cleaning device and method - Google Patents
Hot blank corner crack online cleaning device and method Download PDFInfo
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- CN108015245B CN108015245B CN201711448777.4A CN201711448777A CN108015245B CN 108015245 B CN108015245 B CN 108015245B CN 201711448777 A CN201711448777 A CN 201711448777A CN 108015245 B CN108015245 B CN 108015245B
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- 238000004140 cleaning Methods 0.000 title claims abstract description 140
- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000002893 slag Substances 0.000 claims abstract description 75
- 238000005266 casting Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003546 flue gas Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 90
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 27
- 239000001301 oxygen Substances 0.000 claims description 27
- 229910052760 oxygen Inorganic materials 0.000 claims description 27
- 239000000498 cooling water Substances 0.000 claims description 12
- 239000002737 fuel gas Substances 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 9
- 230000032258 transport Effects 0.000 claims description 9
- 238000005469 granulation Methods 0.000 claims description 8
- 230000003179 granulation Effects 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000009749 continuous casting Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000002360 preparation method Methods 0.000 abstract description 5
- 230000007704 transition Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 230000033764 rhythmic process Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 208000037656 Respiratory Sounds Diseases 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to an on-line cleaning device and a method for cracks at the corner of a hot blank, wherein the on-line cleaning device for cracks at the corner of the hot blank is additionally arranged between a fan-shaped section of a continuous casting machine and a flame cutting machine; through the processes of preheating preparation, preheating positioning, preheating, cleaning, flue gas trapping and slag treatment, corners of four corners of a casting blank can be cleaned simultaneously so as to enable the corners to be in smooth transition, and the defects of overlarge corner re-cleaning area and high steel material loss are effectively avoided; the requirements for cleaning casting blanks with different section sizes are met through automatic positioning, the requirements for different cleaning depths are met through adjusting the burners, and parameters can be adjusted to adapt to the change of the pulling speed; and can realize that "one key" formula operation starts automatic cleaning program, online clearance does not influence the continuous casting production rhythm.
Description
Technical field
The present invention relates to continuous casting technical fields, more particularly to a kind of Hand scarf hot-cast base quadrangle corner that is suitable for split
The hot base corner crack Hand scarf device and method of line.
Background technique
By the slab of the horizontal such as pipe line steel kind for being restricted, being produced through conticaster of current continuous casting process, corner is usual
Can have a crackle, product is not able to satisfy hot sending and requires, offline can only clear up, then it is online it is cold give, not only restrict production efficiency, more damage
It loses a large amount of thermal energy, increase carbon emission.
" a kind of bad corner cleaning plant of plate and cleaning side are disclosed application No. is 201410816308.3 Chinese patent
Method " cuts cleaning plant setting between machine in the outlet of caster two cold room and fire, including nozzle, burner, medium box, traversing sets
Standby, synchronizer, medium box are fixedly connected with burner, nozzle, and medium box, synchronizer are arranged on shifting equipment, are synchronized and are set
Standby that medium box, nozzle and burner is driven to move along slab moving direction, medium box provides combustion gas for burner；Medium box is nozzle confession
Water.The advantages of technical solution, is: the crackle cleaning in the slabs inner arc side corner Liang Ge such as pipe line steel suitable for conticaster production,
Clearing apparatus is arranged on continuous casting machine production line, realizes Hand scarf crackle, does not influence online normal production；It is not take up production week
Swivel link, hot sending rate greatly improve, and are not necessarily to manual cleaning, save a large amount of labor services.But it cannot achieve the clear of 4 corner cracks
Reason.
Summary of the invention
The present invention provides a kind of hot base corner crack Hand scarf device and method, can corner to slab quadrangle it is same
Shi Jinhang cleaning, makes its smooth transition, effectively avoids that " corner weight clear " region is excessive, high disadvantage is lost in iron and steel stock；By certainly
Dynamic positioning meets the cleaning of different section size slab and requires, and meets different cleaning depth requirements by adjusting burner, by adjusting
The parameter adaptation pulling rate that can be situated between variation；And it can be realized the operation of " key " formula and start automatic liquidation procedures, Hand scarf does not influence
Continuous casting rhythm.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of hot base corner crack Hand scarf device, the fan-shaped section and fire that conticaster is arranged in are cut between machine, including interior
Arc clears up rifle, outer arc cleaning rifle, side Slag treatment hydraulic giant, inner arc water curtain, outer arc water curtain, clamp, trolley and cart；Cart across
It is transported above roller-way in slab, 2 trolleies are respectively arranged on cart two sides and can move back and forth along the direction conveyed perpendicular to slab；
2 clamps are respectively arranged on the trolley of two sides for clamping slab, and clamp drives cart and slab servo-actuated after clamping slab；In 2 groups
Arc cleaning rifle, 2 groups of outer arc cleaning rifles and 2 groups of side Slag treatment hydraulic giants are respectively arranged 1 group on the trolley of two sides respectively, and wherein inner arc is clear
Reason rifle is correspondingly arranged at the interior top of two side corner sections of slab inner arc；Outer arc cleaning rifle is correspondingly arranged at the outside upper of two side corner sections of slab outer arc
Side；Side Slag treatment hydraulic giant is correspondingly arranged at the outer top of slab two sides；Inner arc water curtain is 2 groups, is respectively correspondingly arranged in slab fortune
Send the two sides of roller-way；Outer arc water curtain is correspondingly arranged at the lower section of slab.
The inner arc cleaning rifle, outer arc cleaning rifle include gun body, nozzle and cooling-water duct, and gun body front end sets nozzle,
The center of nozzle sets cleaning eye, and the periphery of cleaning eye sets preheating gate, and cleaning eye is connect with cleaning oxygen channel, preheating gate with it is flammable
Gas and the connection of preheated oxygen pipeline；The periphery of gun body sets cooling-water duct, and cooling-water duct connects external cooling water pipeline.
Cylindrical spout is set on the side Slag treatment hydraulic giant.
The inner arc water curtain and outer arc water curtain are made of multiple fan nozzles arranged side by side.
A kind of hot base corner crack Hand scarf method based on described device, the angle suitable for Hand scarf slab quadrangle
Portion's crackle；Specifically comprise the following steps:
1) hot base corner crack Hand scarf device positioning；
1.1 determine positioning datum；
1.1.1 three-dimensional coordinate: with the fixed plate plane of inner arc cleaning rifle and slab upper surface, respective side slab side on trolley
The joint in face is origin O, and origin is that X-axis is positive along slab upper surface and side intersecting lens inverse casting stream direction, and origin is along slab
Upper surface is simultaneously perpendicularly oriented to slab center position as Y-axis forward direction, and origin is that Z axis is positive perpendicular to slab upper surface upward direction,
Establish coordinate system；
1.1.2 three axis: the axis of inner arc cleaning rifle burner is set as a, the axis that outer arc clears up rifle burner is b, side
The water nozzle axis of Slag treatment hydraulic giant is c；
1.1.3 three centers: setting the burner end face center of inner arc cleaning rifle as O1, the burner end face center of outer arc cleaning rifle
For O3, the water nozzle end face center of side Slag treatment hydraulic giant is O5；
The positioning of 1.2 devices:
1.2.1 inner arc cleaning rifle position is in XZ plane first quartile, and axis a and X-axis forward direction angle are 25 °~45 °, with XY
Face angle is 15 °~35 °；
1.2.2 outer arc cleaning rifle position is in XZ plane first quartile, and axis b and X-axis forward direction angle are 25 °~45 °, with XZ
Face angle is 15 °~35 °；
1.2.3 the axis c of side Slag treatment hydraulic giant is parallel to Y-axis, hydraulic pressure >=120bar；
1.2.4 it is fixed to press casting flow center line mirror image respectively for 2 groups of inner arc cleaning rifles, outer arc cleaning rifle and side Slag treatment hydraulic giant
Position；
1.2.5 inner arc water curtain is located at slab and transports on the outside of roller-way, is 20 °~40 ° with the face XZ angle, 2 groups of inner arc water curtains are pressed
Cast the positioning of flow center line mirror image, hydraulic pressure >=120bar；
1.2.6 outer arc water curtain is located at the inside of cart lower section, inner arc water curtain, parallel with the face XY, with slab following table interplanar distance
Not less than 100mm, hydraulic pressure >=120bar；
2) preheating prepares: inner arc water curtain and outer arc water curtain water flowing, and inner arc clears up rifle and outer arc cleaning rifle igniting；
3) preheating positioning: trolley is mobile to slab center, and clamp is automatically stopped after being respectively held against two sides of slab, inner arc
Rifle, outer arc cleaning rifle and side Slag treatment hydraulic giant is cleared up to align by predeterminated position automatic and accurate；
4) preheat: preheated fuel gas and preheating oxygen valve are opened, and inner arc cleaning rifle, outer arc cleaning rifle start to preheat, cart and slab
Synchronizing moving guarantees that hot spot is constant；By preheating, molten bath is formed in slab corner, warm terminates；
5) clear up: after molten bath is formed, cleaning oxygen valve is pressed default aperture and is opened, and clamp unclamps, and cart is no longer with slab
Mobile, in slab moving process, molten bath does relative motion with cleaning oxygen, is continuously finished scale removal process；Because respectively cleaning rifle and X,
Y, Z axis is respectively provided with an angle, and a part for corresponding to molten bath is able to retain and keeps continuous along X-axis positive direction, another portion
Divide and enters corresponding water curtain along cleaning gun axis line direction disengaging slab；
6) flue gas trapping and Slag treatment: the steel slag of inner arc cleaning rifle cleaning enters inner arc water curtain, enters slag runner with granulation water；
The steel slag of outer arc cleaning rifle cleaning enters outer arc water curtain, enters slag runner with granulation water；The water column of side Slag treatment hydraulic giant is along slab
Side sprays downwards, and the steel slag that slab side is remained in scale removal process is smashed and enters lower section slag runner.
Compared with prior art, the beneficial effects of the present invention are:
1) it is different from conventional " corner weight is clear " using scarfing, really clears up corner, smooth transition, it can be effective
Avoid that " corner weight clear " region is excessive, high disadvantage is lost in iron and steel stock；
2) traditional " slab clamping and conveying device " is replaced using continuous casting machine fan-shaped segment and pulling-straightening equipment, utilize casting machine Slag treatment system
System saves great deal of investment, is not take up land resource as " cleaning slag disposal system "；
3) meet the cleaning of different section size slab by automatic positioning to require, it is deep to meet different cleanings by adjusting burner
Degree requires, by adjusting the parameter coordination pulling rate variation that can be situated between；
4) the preparatory function module in conticaster automatic control system, using the automatic cleaning journey of " key " formula operation starting
Sequence is not take up additional human resources；
5) can be achieved to be not take up the production time is transformed, does not shut down debugging, does not influence existing rhythm of production；
6) slab is not necessarily to offline, direct hot sending, does not influence any process procedure, saves the costs such as mass energy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of hot base corner crack Hand scarf device of the present invention.
Fig. 2 is the positioning relation schematic diagram of hot base corner crack Hand scarf device of the present invention.
In figure: 1,2. inner arcs cleaning rifle 3,4. outer arcs cleaning rifle 5,6. side Slag treatment hydraulic giants 7,8. inner arc water curtains 9,
10. clamp 11,12. trolley, 13. outer arc water curtain, 14. cart, 15. slab
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
As shown in Figure 1, a kind of hot base corner crack Hand scarf device of the present invention, is arranged in the fan-shaped section of conticaster
And fire is cut between machine, including inner arc clears up rifle 1,2, outer arc clears up rifle 3,4, side Slag treatment hydraulic giant 5,6, inner arc water curtain 7,8；Outside
Arc water curtain 13；Clamp 9,10, trolley 11,12 and cart 14；Cart 14 is across slab and transports above roller-way, 2 trolleies 11,12
It is respectively arranged on 14 two sides of cart and can be moved back and forth along the direction conveyed perpendicular to slab 15；2 clamps 9,10 are respectively arranged on two
For clamping slab 15 on side trolley 11,12, clamp 9,10 drives cart 14 and slab 15 servo-actuated after clamping slab 15；In 2 groups
Arc clears up rifle 1,2, and 2 groups of outer arc cleaning 3,4 and 2 groups of side Slag treatment hydraulic giants 5,6 of rifle are respectively arranged on two sides trolley 11,12 respectively
1 group, wherein inner arc cleaning rifle 1,2 is correspondingly arranged at the interior top of 15 inner arc of slab, two side corner sections；Outer arc cleaning rifle 3,4 is correspondingly arranged at
The outer top of 15 outer arc of slab, two side corner sections；Side Slag treatment hydraulic giant 5,6 is correspondingly arranged at the outer top of 15 two sides of slab；Inner arc
Water curtain 7,8 is 2 groups, is respectively correspondingly arranged in the two sides that slab transports roller-way；Outer arc water curtain 13 is correspondingly arranged at the lower section of slab 15.
The inner arc clears up rifle 1,2, and it includes gun body, nozzle and cooling-water duct that outer arc, which clears up rifle 3,4, and gun body front end is set
Nozzle, the center of nozzle set cleaning eye, and the periphery of cleaning eye sets preheating gate, and cleaning eye is connect with cleaning oxygen channel, preheating gate
It is connect with fuel gas and preheated oxygen pipeline；The periphery of gun body sets cooling-water duct, and cooling-water duct connects external cooling water
Pipeline.
Cylindrical spout is set on the side Slag treatment hydraulic giant 5,6.
The inner arc water curtain 7,8 and outer arc water curtain 13 are made of multiple fan nozzles arranged side by side.
A kind of hot base corner crack Hand scarf method based on device of the present invention is suitable for Hand scarf slab four
The corner crack at angle；Specifically comprise the following steps:
1) hot base corner crack Hand scarf device positioning；
1.1 determine positioning datum (as shown in Figure 2)；
1.1.1 three-dimensional coordinate: with fixed on trolley 11,12 inner arc cleaning rifle 15 upper surface of fixed plate plane and slab,
The joint of 15 side of respective side slab is origin O, and origin is X-axis along 15 upper surface of slab and side intersecting lens inverse casting stream direction
Forward direction, origin is along 15 upper surface of slab and is perpendicularly oriented to 15 center position of slab as Y-axis forward direction, and origin is perpendicular to table on slab 15
Direction is that Z axis is positive upwardly, establishes coordinate system；
1.1.2 three axis: the axis of inner arc cleaning rifle 1,2 burners is set as a, outer arc clears up rifle 3, the axis of 4 burners is
B, the water nozzle axis of side Slag treatment hydraulic giant 5,6 are c；
1.1.3 three centers: the burner end face center of inner arc cleaning rifle 1,2 is set as O1, the burner end of outer arc cleaning rifle 3,4
Face center is O3, the water nozzle end face center of side Slag treatment hydraulic giant 5,6 is O5；
The positioning of 1.2 devices:
1.2.1 inner arc cleaning rifle 1,2 is located in XZ plane first quartile, and axis a and X-axis forward direction angle are 25 °~45 °,
It is 15 °~35 ° with the face XY angle；
1.2.2 outer arc cleaning rifle 3,4 is located in XZ plane first quartile, and axis b and X-axis forward direction angle are 25 °~45 °,
It is 15 °~35 ° with the face XZ angle；
1.2.3 the axis c of side Slag treatment hydraulic giant 5,6 is parallel to Y-axis, hydraulic pressure >=120bar；
1.2.4 2 groups of inner arcs cleaning rifle 1,2, outer arc cleaning rifle 3,4 and side Slag treatment hydraulic giant 5,6 are respectively by casting flow center
The positioning of line mirror image；
1.2.5 inner arc water curtain 7,8 is located at slab and transports on the outside of roller-way, is 20 °~40 ° with the face XZ angle, 2 groups of inner arc water curtains
7,8 by casting flow center line mirror image positioning, hydraulic pressure >=120bar；
1.2.6 outer arc water curtain 13 is located at the inside of 14 lower section of cart, inner arc water curtain 7,8, parallel with the face XY, under slab 15
Surface spacing is not less than 100mm, hydraulic pressure >=120bar；
2) preheating prepares: 13 water flowing of inner arc water curtain 7,8 and outer arc water curtain, and inner arc clears up rifle 1,2 and outer arc clears up 3,4 points of rifle
Fire；
3) preheating positioning: trolley 11,12 is mobile to 15 center of slab, after clamp 9,10 is respectively held against 15 two sides of slab
It is automatically stopped, inner arc clears up rifle 1,2, and outer arc clears up rifle 3,4 and side Slag treatment hydraulic giant 5,6 presses predeterminated position automatic and accurate pair
Position；
4) preheat: preheated fuel gas and preheating oxygen valve are opened, and inner arc clears up rifle 1,2, and outer arc cleaning rifle 3,4 starts to preheat, cart
14 with 15 synchronizing moving of slab, guarantee hot spot it is constant；By preheating, molten bath is formed in 15 corner of slab, warm terminates；
5) clear up: after molten bath is formed, cleaning oxygen valve is pressed default aperture and is opened, and clamp 9,10 unclamps, and cart 14 is no longer
Mobile with slab 15, in 15 moving process of slab, molten bath does relative motion with cleaning oxygen, is continuously finished scale removal process；Because each
Cleaning rifle 1-4 and X, Y, Z axis are respectively provided with an angle, and a part for corresponding to molten bath is able to retain and protect along X-axis positive direction
It holds continuously, another part enters along cleaning rifle 1-4 axis direction disengaging slab 15 corresponds to water curtain；
6) flue gas trapping and Slag treatment: inner arc cleaning rifle 1,2 clear up steel slag enter inner arc water curtain 7,8, with granulation water into
Enter slag runner；The steel slag that outer arc cleaning rifle 3,4 is cleared up enters outer arc water curtain 13, enters slag runner with granulation water；Side Slag treatment hydraulic giant
5,6 water column sprays downwards along 15 side of slab, under the steel slag that 15 side of slab is remained in scale removal process is smashed and entered
Square slag runner.
On the basis of clamp 9,10 clamping faces, realize that inner arc clears up rifle 1,2 using three-dimensional template, outer arc clears up rifle 3,4
And the quick positioning of side Slag treatment hydraulic giant 5,6 in three-dimensional space, i.e., " three-dimensional setting "；Clamp 9,10 clamps 15 side of slab
Determine slab edge position afterwards, inner arc clears up rifle 1,2, outer arc cleaning rifle 3,4, side Slag treatment hydraulic giant 5,6 and slab 15
Relative position is automatically performed by " three-dimensional setting ".
Preparations is embedded in conticaster automatic operation system, starting, preheating, cleaning, clear/accident, heat are changed and adjust wide 7 greatly
Module, under " casting " mode of conticaster, a key operation starts " starting module "；When 15 head of slab reaches pre- thermal potential,
" warm-up block " is automatically gone to, by automatic positioning and warm, forms molten bath；Then it automatically goes to " cleaning modul ", it is right
Slab 15 is implemented continuously to clear up；When conticaster enters " tail mold formula " or manual intervention state, " clear/accident " module is opened
It is dynamic, it is transferred to automatically " preparation module ", waits a key operation enabled instruction.
The present invention utilizes the basic principle of " scafing ", and developing one kind online while can clear up slab four corners
The method of crackle, the Hand scarf method can overcome the disadvantages that the deficiency of continuous casting process, realize high-quality slab hot delivery and hot charging, fill up continuous casting
Hot delivery and hot charging technological gap；There are the slabs of corner defect to be not necessarily to offline cleaning, greatly improves production efficiency, avoids big calorimetric
The loss of energy reduces carbon emission.
The technological principle that the present invention applies is as follows:
1) preheat: under the calcination of fuel gas (referred to as " preheating "), metal can be melted gradually in slab corner, form one
Divide molten metal (referred to as " molten bath ").
Reaction principle: C3H4+5O2→3CO2+4H2O；
2) it clears up: metal material (slab) being cleared up using the heat that oxidation reaction generates, molten bath is in purge oxygen
Promotion under move forwards, so that slab corner crack be made to be cleaned out.
Reaction principle: Fe+1/2O2→FeO+64kcal；
2Fe+3/2O2→Fe2O3+195kcal；
3Fe+2O2→Fe3O4+267kcal；
Conventional cleaning method: online slab scafing equipment is typically disposed on the runout table after fire cuts machine, includes
Centralising device, clamping device, driving device and cleaning equipment etc..
Hot base corner crack Hand scarf device setting of the present invention is cut between machine in fan-shaped section and fire, does not influence casting machine
Any function." clamping device ", " pulling-straightening equipment " that " fan-shaped section " is equivalent to conventional plate blank cleaning system are equivalent to conventional plate blank
" driving device " of cleaning system, cleaning plant automatic centering save a large amount of equipment investments without additional setting centralising device.
The function of each component is as follows in hot base corner crack Hand scarf device of the present invention:
1) inner arc clear up rifle 1,2: respectively set one group in 15 two sides of slab along 15 width direction of slab, and be fixed on trolley 11,
On 12, when prune job, it is located at the interior top of 15 inner arc of slab, two side corner sections.Fuel gas is pressed in gun body with preheating oxygen
Ratio mixing, sprays through the preheating gate of burner periphery, lights and realize pre- heat function, form predetermined molten bath；Oxygen is cleared up through gun body
Intermediate conduit is sprayed by cleaning eye among burner, and oxidation reaction occurs with molten bath, realizes clearing function；Inner arc is cleared up rifle 1,2 and is had
There is Forced water cooling function.
2) outer arc clears up rifle 3,4: respectively setting one group in 15 two sides of slab along 15 width direction of slab, is fixed on trolley 11,12
On, when prune job, it is located at the outer top of 15 outer arc of slab, two side corner sections.Fuel gas and preheating oxygen in gun body by than
Example mixing, sprays through the preheating gate of burner periphery, lights and realize pre- heat function, form predetermined molten bath；Oxygen is cleared up through in gun body
Between pipeline sprayed by cleaning eye among burner, oxidation reaction occurs with molten bath, realizes clearing function；Outer arc cleaning rifle 3,4 has
Forced water cooling function.
3) side Slag treatment hydraulic giant 5,6: one group is respectively set in 15 two sides of slab along 15 width direction of slab, is fixed on trolley
11, on 12, when prune job, it is located at the outer top of 15 two sides of slab, water nozzle sprays water jets under high pressure, by 15 side of slab
The remaining steel slag in face is destroyed, is smashed, and is sent into slag runner.
4) inner arc water curtain 7,8: being respectively arranged on slab and transport roller-way two sides, sprays high pressure water by combination covering of the fan nozzle,
The slag (Fe oxide) that inner arc cleaning rifle 1,2 is blown out is captured, and smashes, be sent into slag runner.
5) outer arc water curtain 13: being located at 15 lower section of slab, sprays high pressure water by combination covering of the fan nozzle, captures outer arc cleaning
The slag (Fe oxide) that rifle 3,4 is blown out, and smash, be sent into slag runner.
6) clamp 9,10: one group is respectively set in 15 two sides of slab along 15 width direction of slab, is fixed on trolley 11,12, together
When movement clamp the two sides of slab 15, realization device positioning and servo-actuated clamping function.
7) trolley 11,12: one is respectively set in 15 two sides of slab along 15 width direction of slab, effect is to drive inner arc cleaning
Rifle 1,2, outer arc clear up rifle 3,4, and side Slag treatment hydraulic giant 5,6, clamp 9,10 etc. are moved back and forth perpendicular to casting stream direction.
8) cart 14: for driving trolley 11,12 etc. to move back and forth along casting stream direction.
A kind of technical characterstic of hot base corner crack Hand scarf method of the present invention is as follows:
1) three-dimensional setting: by three-dimensional template, it can be achieved that inner arc clears up rifle 1,2, outer arc on the basis of clamp clamping face
Rifle 3,4 is cleared up, side Slag treatment hydraulic giant 5,6 is primary in three-dimensional space to complete positioning setting；
2) it floating and positions: 15 side of slab being clamped by clamp 9,10 and determines slab edge position, inner arc clears up rifle 1,2,
The relative position of outer arc cleaning rifle 3,4, side Slag treatment hydraulic giant 5,6 and slab 15 is automatically performed by " three-dimensional setting ".It is so-called " floating
Dynamic positioning " refers to be accurately positioned with hot base actual outer dimensions, can be eliminated difference and be poured time slab center line and shape deviation
A kind of localization method of brought influence.
3) synchronous preheating: slab 15 is clamped by clamp 9,10, for cart 14 with 15 synchronizing moving of slab, preheating lance mouth is opposite
15 position of slab is fixed, so that molten bath be made smoothly to be formed.
4) intelligence cleaning: cleaning oxygen automatic adjustment is suitable for different casting；Cleaning, pre- heat function automatically switch, and are suitable for
Heat changes the states such as Zhong Bao, on-line width adjustment.
A kind of technical characterstic of the hot base corner crack Hand scarf method of the present invention in terms of automatic control is as follows:
1) it function modoularization: changed comprising preparation, starting, preheating, cleaning, clear/accident and heat, adjust wide etc. 7 big function moulds
Block；
2) operating in a key: under conticaster " casting " mode, a key operation starts " starting module "；When slab head is arrived
When up to pre- thermal potential, it is transferred to " warm-up block " automatically, passes through automatic positioning and calcination process, forms molten bath；Then it is transferred to automatically " clear
Manage module ", continuous cleaning is implemented to hot base；It is " clear when conticaster is transferred to " tail mold formula " or manual intervention (clear or emergency stop)
Machine/accident " starting, is transferred to " preparation module " automatically, waits one-key start instruction.
3) intelligentized control method: cleaning oxygen and pulling rate press model automatic mixing, are not necessarily to manual entry；Cleaning and heat change, adjust width
Etc. modules automatic conversion, be not necessarily to manual intervention.
Following embodiment is implemented under the premise of the technical scheme of the present invention, gives detailed embodiment and tool
The operating process of body, but protection scope of the present invention is not limited to following embodiments.Method therefor is such as without spy in following embodiments
Not mentionleting alone bright is conventional method.
[embodiment]
In the present embodiment, online corner crack cleaning is carried out to the slab 15 with a thickness of 200mm (width is unlimited), step is such as
Under:
1) it is cut in the fan-shaped section of conticaster and fire and adds hot base corner crack Hand scarf device between machine；
2) hot base corner crack Hand scarf device positioning；
2.1 determine positioning datum；
2.1.1 three-dimensional coordinate: with fixed on trolley 11,12 inner arc cleaning rifle 1 15 upper surface of fixed plate plane and slab,
The joint of 15 side of respective side slab is origin O, and origin is X-axis along 15 upper surface of slab and side intersecting lens inverse casting stream direction
Forward direction, origin is along 15 upper surface of slab and is perpendicularly oriented to 15 center position of slab as Y-axis forward direction, and origin is perpendicular to table on slab 15
Direction is that Z axis is positive upwardly, establishes coordinate system；
2.1.2 three axis: the axis of inner arc cleaning rifle 1,2 burners is set as a, outer arc clears up rifle 3, the axis of 4 burners is
B, the water nozzle axis of side Slag treatment hydraulic giant 5,6 are c；
2.1.3 three centers: the burner end face center of inner arc cleaning rifle 1,2 is set as O1, the burner end of outer arc cleaning rifle 3,4
Face center is O3, the water nozzle end face center of side Slag treatment hydraulic giant 5,6 is O5；
The positioning of 2.2 devices:
2.2.1 inner arc cleaning rifle 1,2 is located in XZ plane first quartile, and axis a and X-axis forward direction angle are 35 °, with the face XY
Angle is 25 °；O1Coordinate is (80,35,22).
2.2.2 outer arc cleaning rifle 3,4 is located in XZ plane first quartile, and axis b and X-axis forward direction angle are 35 °, with the face XZ
Angle is 25 °；O3Coordinate is (40, -22, -165).
2.2.3 the axis c of side Slag treatment hydraulic giant 5,6 is parallel to Y-axis, O5Coordinate be (55, -2.5,3), hydraulic pressure >=
120bar (water nozzle internal diameter is 4mm)；
2.2.4 2 groups of inner arcs clear up rifle 1,2, and outer arc clears up rifle 3,4 and side Slag treatment hydraulic giant 5,6 respectively by casting flow center
The positioning of line mirror image；
2.2.5 inner arc water curtain 7,8 is located at slab and transports on the outside of roller-way at 200mm, is 30 ° with the face XZ angle, 2 groups of inner arc water
Curtain 7,8 is by casting flow center line mirror image positioning, hydraulic pressure >=120bar；
2.2.6 outer arc water curtain 13 is located at the inside of 14 lower section of cart, inner arc water curtain 7,8, parallel with the face XY, under slab 15
Surface spacing is 100mm, hydraulic pressure >=120bar；
3) preheating prepares: 13 water flowing of inner arc water curtain 7,8 and outer arc water curtain, and inner arc clears up rifle 1,2 and outer arc clears up 3,4 points of rifle
Fire；
4) preheating positioning: trolley 11,12 is mobile to 15 center of slab, after clamp 9,10 is respectively held against 15 two sides of slab
It is automatically stopped, inner arc clears up rifle 1,2, and outer arc clears up rifle 3,4 and side Slag treatment hydraulic giant 5,6 presses predeterminated position automatic and accurate pair
Position；
5) preheat: preheated fuel gas and preheating oxygen valve are opened, and inner arc cleaning rifle 1,2, outer arc cleaning rifle 3,4 start to preheat, cart
14 with 15 synchronizing moving of slab, guarantee hot spot it is constant；Propane pressure >=1.0bar, oxygen pressure >=5.0bar preheat 18s,
Molten bath is formed in 15 corner of slab, warm terminates；
6) clear up: after molten bath is formed, cleaning oxygen valve is pressed default aperture and is opened, and clamp 9,10 unclamps, and cart 14 is no longer
Mobile with slab 15, in 15 moving process of slab, molten bath does relative motion with cleaning oxygen, is continuously finished scale removal process；Because each
Cleaning rifle 1,4 and X, Y, Z axis are respectively provided with an angle, and a part for corresponding to molten bath is able to retain and protect along X-axis positive direction
It holds continuously, another part is detached from slab along cleaning rifle 1-4 axis direction and enters corresponding water curtain；Oxygen pressure >=10.0bar；
7) flue gas trapping and Slag treatment: inner arc cleaning rifle 1,2 clear up steel slag enter inner arc water curtain 7,8, with granulation water into
Enter slag runner；The steel slag that outer arc cleaning rifle 3,4 is cleared up enters outer arc water curtain 13, enters slag runner with granulation water；Side Slag treatment hydraulic giant
5,6 water column sprays downwards along 15 side of slab, under the steel slag that 15 side of slab is remained in scale removal process is smashed and entered
Square slag runner.
Slab corner crack through clearing up all is removed, and realizes smooth transition.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of hot base corner crack Hand scarf method, the corner crack suitable for Hand scarf slab quadrangle；Its feature exists
In based on a kind of hot base corner crack Hand scarf device realization, the hot base corner crack Hand scarf device setting is even
The fan-shaped section and fire of casting machine are cut between machine, including inner arc cleaning rifle, outer arc cleaning rifle, side Slag treatment hydraulic giant, inner arc water curtain, outer
Arc water curtain, clamp, trolley and cart；Cart is across slab and transports above roller-way, and 2 trolleies are respectively arranged on cart two sides and can
It is moved back and forth along the direction perpendicular to slab conveying；2 clamps are respectively arranged on the trolley of two sides for clamping slab, and clamp is clamped
Drive cart and slab servo-actuated after slab；2 groups of inner arc cleaning rifles, 2 groups of outer arc cleaning rifles and 2 groups of side Slag treatment hydraulic giants exist respectively
1 group is respectively arranged on the trolley of two sides, wherein inner arc cleaning rifle is correspondingly arranged at the interior top of two side corner sections of slab inner arc；Outer arc clears up rifle
It is correspondingly arranged at the outer top of two side corner sections of slab outer arc；Side Slag treatment hydraulic giant is correspondingly arranged at the outer top of slab two sides；It is interior
Arc water curtain is 2 groups, is respectively correspondingly arranged in the two sides that slab transports roller-way；Outer arc water curtain is correspondingly arranged at the lower section of slab；
The hot base corner crack Hand scarf method specifically comprises the following steps:
1) hot base corner crack Hand scarf device positioning；
1.1 determine positioning datum；
1.1.1 three-dimensional coordinate: with the fixed plate plane of inner arc cleaning rifle on trolley and slab upper surface, respective side slab side
Joint is origin O, and origin is that X-axis is positive along slab upper surface and side intersecting lens inverse casting stream direction, origin table along slab
Face is simultaneously perpendicularly oriented to slab center position as Y-axis forward direction, and origin is that Z axis is positive perpendicular to slab upper surface upward direction, is established
Coordinate system；
1.1.2 three axis: setting the axis of inner arc cleaning rifle burner as a, and the axis that outer arc clears up rifle burner is b, at the slag of side
The water nozzle axis for managing hydraulic giant is c；
1.1.3 three centers: the burner end face center of inner arc cleaning rifle is set as O1, the burner end face center that outer arc clears up rifle is O3,
The water nozzle end face center of side Slag treatment hydraulic giant is O5；
The positioning of 1.2 devices:
1.2.1 for inner arc cleaning rifle position in XZ plane first quartile, axis a and X-axis forward direction angle are 25 °~45 °, are pressed from both sides with the face XY
Angle is 15 °~35 °；
1.2.2 for outer arc cleaning rifle position in XZ plane first quartile, axis b and X-axis forward direction angle are 25 °~45 °, are pressed from both sides with the face XZ
Angle is 15 °~35 °；
1.2.3 the axis c of side Slag treatment hydraulic giant is parallel to Y-axis, hydraulic pressure >=120bar；
1.2.4 2 groups of inner arc cleaning rifles, outer arc cleaning rifle and side Slag treatment hydraulic giant press casting flow center line mirror image positioning respectively；
1.2.5 inner arc water curtain is located at slab and transports on the outside of roller-way, is 20 °~40 ° with the face XZ angle, and 2 groups of inner arc water curtains are by casting stream
The positioning of center line mirror image, hydraulic pressure >=120bar；
1.2.6 outer arc water curtain is located at the inside of cart lower section, inner arc water curtain, parallel with the face XY, not small with slab following table interplanar distance
In 100mm, hydraulic pressure >=120bar；
2) preheating prepares: inner arc water curtain and outer arc water curtain water flowing, and inner arc clears up rifle and outer arc cleaning rifle igniting；
3) preheating positioning: trolley is mobile to slab center, and clamp is automatically stopped after being respectively held against two sides of slab, inner arc cleaning
Rifle, outer arc cleaning rifle and side Slag treatment hydraulic giant are aligned by predeterminated position automatic and accurate；
4) preheat: preheated fuel gas and preheating oxygen valve are opened, and inner arc cleaning rifle, outer arc cleaning rifle start to preheat, and cart is synchronous with slab
It is mobile, guarantee that hot spot is constant；By preheating, molten bath is formed in slab corner, warm terminates；
5) clear up: after molten bath is formed, cleaning oxygen valve is pressed default aperture and is opened, and clamp unclamps, and cart is no longer mobile with slab,
In slab moving process, molten bath does relative motion with cleaning oxygen, is continuously finished scale removal process；Because of respectively cleaning rifle and X, Y, Z axis
It is respectively provided with an angle, a part for corresponding to molten bath is able to retain and keeps continuous along X-axis positive direction, and another part is along clear
Reason gun axis line direction is detached from slab and enters corresponding water curtain；
6) flue gas trapping and Slag treatment: the steel slag of inner arc cleaning rifle cleaning enters inner arc water curtain, enters slag runner with granulation water；Outer arc
The steel slag of cleaning rifle cleaning enters outer arc water curtain, enters slag runner with granulation water；The water column of side Slag treatment hydraulic giant is along slab side
It sprays downwards, the steel slag that slab side is remained in scale removal process is smashed and enters lower section slag runner.
2. a kind of hot base corner crack Hand scarf method according to claim 1, which is characterized in that the inner arc cleaning
Rifle, outer arc cleaning rifle include gun body, nozzle and cooling-water duct, and gun body front end sets nozzle, and the center of nozzle sets cleaning eye, clearly
The periphery in reason hole sets preheating gate, and cleaning eye is connect with cleaning oxygen channel, and preheating gate and fuel gas and preheated oxygen pipeline connect
It connects；The periphery of gun body sets cooling-water duct, and cooling-water duct connects external cooling water pipeline.
3. a kind of hot base corner crack Hand scarf method according to claim 1, which is characterized in that at the side slag
Cylindrical spout is set on reason hydraulic giant.
4. a kind of hot base corner crack Hand scarf method according to claim 1, which is characterized in that the inner arc water curtain
It is made of with outer arc water curtain multiple fan nozzles arranged side by side.
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| CN201711448777.4A CN108015245B (en) | 2017-12-27 | 2017-12-27 | Hot blank corner crack online cleaning device and method |
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| CN109909468B (en) * | 2019-03-06 | 2021-01-08 | 鞍钢股份有限公司 | Positioning device and method for cleaning corners of casting blank |
| CN112077526A (en) * | 2020-09-01 | 2020-12-15 | 南京钢铁股份有限公司 | Method for fully automatically cleaning corner defects of plate blank |
| CN113967727B (en) * | 2021-11-08 | 2023-03-03 | 上海东震冶金工程技术有限公司 | Continuous casting corner cleaning molten pool retainer |
| CN114473130B (en) * | 2022-01-28 | 2024-06-21 | 唐山不锈钢有限责任公司 | Four-corner thermal state cutting device and method for one-key continuous casting slab |
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| CN201168773Y (en) * | 2007-12-18 | 2008-12-24 | 鞍钢股份有限公司 | Online angle cleaning device for slab continuous casting |
| CN201960245U (en) * | 2010-07-31 | 2011-09-07 | 姚明 | Flame-type corner cleaning machine |
| CN102717169A (en) * | 2012-07-13 | 2012-10-10 | 上海东震冶金工程技术有限公司 | Automatic continuous casting billet flame cleaning device and operation method thereof |
| CN105772667A (en) * | 2014-12-23 | 2016-07-20 | 鞍钢股份有限公司 | Slab corner cleaning device and method |
| CN106424623A (en) * | 2016-10-21 | 2017-02-22 | 东北大学 | Device and method for cleaning continuous casting slab through lateral-frontal sweeping |
| CN207756865U (en) * | 2017-12-27 | 2018-08-24 | 鞍钢股份有限公司 | Hot billet bight crackle online cleaning device |
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Application publication date: 20180511 Assignee: SHANGHAI XINZHONG METALLURGICAL EQUIPMENT FACTORY Assignor: ANGANG STEEL COMPANY LIMITED Contract record no.: X2021210000042 Denomination of invention: On line cleaning device and method for hot billet corner crack Granted publication date: 20190806 License type: Common License Record date: 20210910 |
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