The plumbous band of continuous casting that is provided with the strand conveying mechanism is with the wheeled conticaster of steel band
Technical field
The utility model relates to the continuous casting installation for casting of non-ferrous alloy, and especially a kind of plumbous band of continuous casting that is provided with the strand conveying mechanism is with the wheeled conticaster of steel band.
Background technology
Electrode plate grid plays the fixedly effect of active material simultaneously as the electronics collector, is the important component part of lead-acid accumulator.In the use of lead-acid accumulator, the active material of porous can permeate sulfuric acid, causes grid to corrode, and influences the life-span that recycles of grid, and then the durability of battery is caused significant effects; Simultaneously, the delivery request grid of electronics has good electrical conductivity, and requiring in use, the corrosion product of grid has lower impedance, especially anode plate grid.Have confidential relation between the corrosion resistance of grid and the crystal structure, therefore in order to improve the crystal structure of grid, with decay resistance and the passivation product that improves grid, usual way comprises the employing of alloying elements such as adding antimony and casting-rolling technology.Compare with the grid of direct casting, the casting moulding process is at first cast strand, and calendering forms thin lead ribbon to strand then, finally forms grid through technologies such as otch stretchings afterwards.Because organizing of rolling feasible plumbous band is finer and close, mechanical strength is high, the endurable burn into cycle life of passing through of the grid of therefore being produced prolongs.
The moulding of strand can be adopted die casting or continuous casting.The gravity casting method is adopted in plumbous die casting, and the die cavity of mould, die joint be setting longitudinally all, implement easily, but setting time is long, and production efficiency is low, and plumbous liquid is a large amount of to be exposed and the position dispersion, and lead fume pollutes big.The automaticity of continuous casting is high, and plumbous liquid only exposes near crystallizing wheel, can reduce lead fume through the mode of concentrating exhausting and pollute, and therefore pollutes little.Continuous casting installation for casting commonly used mainly comprises and soaks casting machine, melt traction continuous casting installation for casting, double-roller continuous casting machine, the wheeled conticaster of steel band.
Soak casting machine, immerse in the molten bath, have certain thickness metal tape in the shaping roller continuous formation in surface through cooling forming roller with rotation.Melt traction continuous casting installation for casting, the cooling forming roller through tundish and rotation matches, and the molten metal in the tundish molten bath applies and formation has certain thickness metal tape at the cooling forming roller surface of rotation incessantly.Soak casting machine, melt traction continuous casting installation for casting; When being used to prepare lead band with big thickness, because plumbous density is very big, heavily about 11.3 tons of one cubic metre lead; Gravity can destroy the continuity of deposite metal on roller; Therefore the big more moulding of thickness is more difficult, thickness evenness is poor more, and especially to the metal of freezing range broads such as low-antimony-lead alloy, the thickness that soaks casting machine, the plumbous band of melt traction continuous casting installation for casting continuous casting at present is generally about 1mm.
Double-roller continuous casting machine is usually used in the strand continuous casting of steel band, and two rollers are oppositely arranged, and molten metal pours into two roller gap places by two rollers top and forms the molten bath; With the rotation of roller, the molten metal in the molten bath forms continuous base shell and gets into the cooling roller bed of roller below through the cooling of roller; Not solidified molten metal further cools off at cooling roller bed in the base shell, finally forms complete strand.Double-roller continuous casting machine, not solidified molten metal need further cool off at cooling roller bed in the base shell, because plumbous matter is soft, base shell intensity is low, yielding; And lead density is big, further the distortion of aggravation base shell.Therefore to produce the uniformity of slab thickness in order guaranteeing, just to need in the restriction base shell the not amount of frozen metal liquid, so the thickness of strand is difficult to improve, the thickness be with of double-roller continuous casting machine continuous casting lead is generally about 5mm at present, is no more than 10mm.
The wheeled conticaster of steel band comprises crystallizing wheel, steel band train, steel band without a head, and steel band is tightened through the steel band train and with the rotation campaign of active wheeled steel, crystallizing wheel rotation and external cylindrical surface are provided with the crystallization cavity of indent; Crystallizing wheel is installed on the steel band outside, and its part external cylindrical surface and steel band lateral surface are close to, and forms the die cavity that circumferentially extends along crystallizing wheel through the crystallization cavity of this part of steel band sealing; Die cavity two ends, an end are that casting gate, the other end are the throwing mouth, and through the cooling of cooling system to steel band, crystallizing wheel, the molten metal that is injected by casting gate progressively solidifies in die cavity and forms strand, is pulled out by the throwing mouth with the motion strand of crystallizing wheel, steel band.Form complete airtight die cavity owing to surround crystallization cavity through steel band, for strand provides good supporting, the metal fluid power carries out fluid infusion to solidification shrinkage automatically, has therefore guaranteed the stability of casting blank shape; Therefore; With respect to above-mentioned casting machine, melt traction continuous casting installation for casting, the double-roller continuous casting machine of soaking, the strand minimize exposure in molten metal and the process of setting, that lead fume pollutes is little, the strand oxidation is few; The cross dimensions of strand only receives the restriction of steel band enabling capabilities, can obtain thicker strand.
But the wheeled conticaster of steel band; By crossing the axial fore-and-aft plane of crystallizing wheel crystallizing wheel is divided into first area and second area; Casting gate is positioned at the top of crystallizing wheel first area, receives the restriction of upper belt-wheel, pours into a mould tundish and pour into platform to be positioned at crystallizing wheel second area top; Casting sloping platform for fear of with casting tundish and tundish produces interference, and rollgang extends to the crystallizing wheel top by the outside of crystallizing wheel first area; And die cavity circumferentially extends along crystallizing wheel; Strand is walked around crystallizing wheel and is pulled out by second area; Therefore be provided with the arc access bridge that an end is higher than the other end; The end that access bridge is high be positioned at crystallizing wheel top and link to each other with rollgang, a low end is positioned at the outside of crystallizing wheel second area, is made up of the strand conveying mechanism that strand is carried access bridge and rollgang.When adopting above-mentioned strand conveying mechanism, the strand between throwing mouth and rollgang moves upward, and part is unsettled, and it is big influenced by deadweight.The wheeled conticaster of traditional steel band is mainly used in the preparation wire production with aluminium bar, copper rod, and the intensity of the little and aluminium of casting blank section, copper is higher, so the strand between throwing mouth and the rollgang can not be out of shape under the deadweight effect; But lead density is very big and matter is soft, so the strand between throwing mouth and the rollgang very easily is out of shape under the deadweight effect even ruptures, and what can't guarantee to produce carries out the lead band of especially big section smoothly.
The utility model content
The utility model technical problem to be solved provides a kind of plumbous being with the wheeled conticaster of steel band of the continuous casting that is provided with the strand conveying mechanism that can avoid the lead band between throwing mouth and the rollgang under the deadweight effect, to be out of shape even to rupture.
The utility model solves the technical scheme that its technical problem adopted: the plumbous band of continuous casting that is provided with the strand conveying mechanism comprises frame, crystallizing wheel, steel band train, steel band without a head, strand conveying mechanism with the wheeled conticaster of steel band; The external cylindrical surface of said crystallizing wheel is provided with the crystallization cavity of indent; Crystallizing wheel is tightened and walked around to said steel band through the steel band train, and through the partially crystallizable chamber formation die cavity of steel band sealing crystallizing wheel, an end of said die cavity is that casting gate, the other end are the throwing mouth; Said strand conveying mechanism comprises access bridge and rollgang, and said access bridge one end is higher than the other end and constitutes level and smooth conveying curved surface; By crossing the axial fore-and-aft plane of crystallizing wheel crystallizing wheel is divided into first area and second area; Said casting gate is positioned at the top of crystallizing wheel first area; The end that said access bridge is high is positioned at crystallizing wheel top, a low end is positioned at the outside of crystallizing wheel second area, said rollgang one end be positioned at the crystallizing wheel top and with the high end of access bridge links to each other, the other end is positioned at the crystallizing wheel first area the outside; Said throwing mouth is positioned at the bottom of crystallizing wheel second area; Be provided with the strand supporting mechanism that is fixed on the frame, said strand supporting mechanism extends below to the top of the throwing mouth position of crystallizing wheel by the outside of crystallizing wheel second area is oblique, is formed by the strand supporting mechanism to be parallel to the axial strand supporting surface of crystallizing wheel; The end that said access bridge is low is positioned at the top of strand supporting mechanism away from crystallizing wheel one end.
The acute angle angle of the end same level direction that further, said strand supporting surface is adjacent with crystallizing wheel is less than or equal to 60 °.Further, the end that said strand supporting surface is adjacent with crystallizing wheel is positioned on the tangential plane of external cylindrical surface of crystallizing wheel correspondence position.The acute angle angle of the end same level direction that further, said strand supporting surface is adjacent with crystallizing wheel is more than or equal to 30 °.
As a kind of preferred, be provided with first splitter and second splitter that is used to separate strand and steel band that are used for fractional crystallization wheel and strand that are fixed on the frame; Said first splitter is positioned at the top of throwing mouth and the top of the adjacent end with crystallizing wheel of strand supporting mechanism, and the crystallization cavity bottom of crystallizing wheel is inserted at the tip of said first splitter; Shown in second splitter be arranged on down the top of belt wheel; Steel band by between second splitter and crystallizing wheel and the following belt wheel constitutes the strand supporting mechanism.
Further, be provided with rack-mounted rushing board mechanism; Said rushing board mechanism comprises the driving mechanism of flip body and flip body; One end of said flip body and frame are hinged and be positioned at the outside of strand supporting mechanism away from crystallizing wheel one end termination; The axially parallel of jointed shaft is axial in crystallizing wheel, and flip body rotates around jointed shaft under the driving mechanism effect.
Further, be provided with axially parallel in the axial limiting roll of crystallizing wheel in the termination of the adjacent end of said access bridge with the strand supporting mechanism; Be provided with in the termination of the adjacent end of said flip body with the strand supporting mechanism axially parallel in crystallizing wheel axial be connected carrying roller, said flip body is hinged through the roller carrier shaft and the frame that connect carrying roller; Said connection carrying roller and limiting roll is adjacent and between the two roll gap width and slab thickness adapt.
Further, said flip body is by the flip body support and be installed in one group on flip body support and support carrying roller and constitute, each support axially all being parallel to of carrying roller connect roller carrier shaft to; Said driving mechanism is hinged by an end and frame, the other end and the hinged straight line driving mechanism of flip body support constitute.
Further, the strand upset face that is formed by flip body is level and smooth curved surface; The extreme position that corresponding flip body overturns from the bottom to top, the strand that is formed by flip body overturn and form the gap that width and slab thickness adapt between the conveying curved surface of face and access bridge.
The beneficial effect of the utility model is: through between throwing mouth and access bridge, setting up the strand supporting mechanism, make the low end of access bridge move outward, thereby reduced the gradient of access bridge, therefore can strengthen the enabling capabilities of access bridge to strand on it; Secondly, the strand between throwing mouth and the access bridge is formed good supporting, can avoid strand unsettled through the strand supporting mechanism; They are three years old; Base head to strand supports temporarily when watering opening through the strand supporting mechanism; Can conveniently the base head be transferred on access bridge and the rollgang through manual work or equipment; Therefore can avoid lead band between throwing mouth and the rollgang under the deadweight effect, be out of shape even rupture, be applicable to plumbous production of being with especially big section lead to be with.
Description of drawings
Fig. 1 is the structural representation of the wheeled conticaster of the utility model steel band.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
The plumbous band of the continuous casting that is provided with the strand conveying mechanism of the utility model comprises frame 100, crystallizing wheel 200, steel band train, steel band without a head 301, strand conveying mechanism with the wheeled conticaster of steel band; The external cylindrical surface of said crystallizing wheel 200 is provided with the crystallization cavity of indent; Crystallizing wheel 200 is tightened and walked around to said steel band 301 through the steel band train, and through the partially crystallizable chamber formation die cavity of steel band 301 sealing crystallizing wheels 200, an end of said die cavity is that casting gate 203, the other end are throwing mouth 204; Said strand conveying mechanism comprises access bridge 110 and rollgang 120, and said access bridge 110 1 ends are higher than the other end and constitute level and smooth conveying curved surface; By crossing crystallizing wheel 200 axial fore-and-aft planes crystallizing wheel 200 is divided into first area and second area; Said casting gate 203 is positioned at the top of crystallizing wheel 200 first areas; Said access bridge 110 high ends are positioned at crystallizing wheel 200 tops, a low end is positioned at the outside of crystallizing wheel 200 second areas, said rollgang 120 1 ends be positioned at crystallizing wheel 200 tops and with access bridge 110 outside that a high end links to each other, the other end is positioned at crystallizing wheel 200 first areas; Said throwing mouth 204 is positioned at the bottom of crystallizing wheel 200 second areas; Be provided with the strand supporting mechanism that is fixed on the frame 100; Said strand supporting mechanism extends below to the top of throwing mouth 204 positions of crystallizing wheel 200 by the outside of crystallizing wheel 200 second areas is oblique, is formed by the strand supporting mechanism to be parallel to the axial strand supporting surface of crystallizing wheel 200; Said access bridge 110 low ends are positioned at the top of strand supporting mechanism away from crystallizing wheel 200 1 ends.
Through between throwing mouth 204 and access bridge 110, setting up the strand supporting mechanism, make access bridge 110 low ends move outward, thereby reduced the gradient of access bridge 110, therefore can strengthen the enabling capabilities of access bridge 110 to strand on it; Secondly, the strand between throwing mouth 204 and the access bridge 110 is formed good supporting, can avoid strand unsettled through the strand supporting mechanism; They are three years old; Base head to strand supports temporarily when watering opening through the strand supporting mechanism; Can conveniently the base head be transferred on access bridge 110 and the rollgang 120 through manual work or equipment; Therefore can avoid 120 lead band of throwing mouth 204 and rollgang under the deadweight effect, be out of shape even rupture, be applicable to plumbous production of being with especially big section lead to be with.
The acute angle angle of the end same level direction that strand supporting surface and crystallizing wheel 200 are adjacent is big more, and then the strand supporting construction is poor more to the support effect of strand.Therefore, in order to guarantee the support effect of strand supporting surface to strand, the acute angle angle of the end same level direction that said strand supporting surface and crystallizing wheel 200 are adjacent is less than or equal to 60 °.
Further; The acute angle angle of the end same level direction that strand supporting surface and crystallizing wheel 200 are adjacent is during less than the acute angle angle of the external cylindrical surface tangential same level direction of crystallizing wheel 200 correspondence positions; At strand supporting surface and crystallizing wheel 200 joints strand is formed bending, can hinder the disengaging of strand and crystallizing wheel 200.Therefore, best, said strand supporting surface and crystallizing wheel 200 adjacent ends are positioned on the tangential plane of external cylindrical surface of crystallizing wheel 200 correspondence positions.But because strand supporting surface 131 is positioned at throwing mouth 204 tops with crystallizing wheel 200 connecting places, therefore under tangent prerequisite, the acute angle angle of the end same level direction that strand supporting surface and crystallizing wheel 200 are adjacent also receives throwing mouth 204 that position effects is set; And the position that throwing mouth 204 is provided with can influence the space that is provided with that the steel band train is especially descended belt wheel 303 again.Specifically, the acute angle angle of the end same level direction that strand supporting surface and crystallizing wheel 200 are adjacent is big more, then descend belt wheel 303 that the space is set is big more, Vietnamese side is set just.Therefore, descend the setting of belt wheel 303 for ease, avoid strand supporting construction and following belt wheel 303 to produce interference simultaneously, the acute angle angle of the end same level direction that said strand supporting surface and crystallizing wheel 200 are adjacent is more than or equal to 30 °.
Concrete, in instance as shown in Figure 1, be adapted to the casting of the plumbous band of big section; In order to increase the intensity of steel band 301, increased the thickness of steel band 301, corresponding; Tighten what wheeled steel was fastened in order to guarantee steel band 301; Increased the external diameter of each wheeled steel, therefore in order to guarantee down the setting of belt wheel 303, the tangential of throwing mouth 204 positions and the acute angle angle of horizontal direction are 44 °.
Above-mentioned strand supporting mechanism can adopt structure arbitrarily, like plate, roller-way etc.In instance as shown in the figure,, be provided with first splitter 131 and second splitter 132 that is used to separate strand and steel band 301 that are used for fractional crystallization wheel 200 and strand that are fixed on the frame 100 for simplified structure; Said first splitter 131 is positioned at the top of throwing mouth 204 and the top of strand supporting mechanism and crystallizing wheel 200 adjacent ends, and the crystallization cavity bottom of crystallizing wheel 200 is inserted at the tip of said first splitter 131; Shown in second splitter 132 be arranged on down the top of belt wheel 303; Steel band 301 by between second splitter 132 and crystallizing wheel 200 and the following belt wheel 303 constitutes the strand supporting mechanism.The strand supporting mechanism comprises the steel band 301 between crystallizing wheel 200 and the following belt wheel 303; Also be that crystallizing wheel 200 is setting at interval with following belt wheel 303; Through the deadweight of corresponding plumbous band, can further increase the tension force of steel band 301, further guarantee the sealing of 301 pairs of die cavities of steel band.
Further, be provided with the rushing board mechanism 170 that is installed on the frame 100; Said rushing board mechanism comprises the driving mechanism of flip body and flip body; One end of said flip body and frame 100 are hinged and be positioned at the outside of strand supporting mechanism away from crystallizing wheel 200 1 end terminations; The axially parallel of jointed shaft is axial in crystallizing wheel 200, and flip body rotates around jointed shaft under the driving mechanism effect.Opening when watering, flip body is positioned at initial position, through strand supporting mechanism and flip body strand is supported temporarily; With the carrying out of continuous casting, after strand reached certain length, the base head of strand extended to flip body; Flip body is through upwards upset of driving mechanism; Thereby drive upwards upset of strand, strand base head is falling on the rollgang 120 under the deadweight effect, and has guaranteed the cooperation of strand with access bridge 110, rollgang 120 through the deadweight of strand; Thereby when having avoided being transferred to the base head on access bridge and the rollgang through manual work, possible damage to strand.This operation is equally applicable in the production process, and plumbous band fracture back is from newly delivering to rollgang 120 with the lead band.
For fear of in the resupinate process of flip body; Strand and flip body break away from fully and drop downwards; Just need to increase the resupinate speed of flip body, thereby strand and base head thereof are thrown away, therefore all bigger to the impact of access bridge 110, rollgang 120, strand.Therefore, further, be provided with axially parallel in the termination of said access bridge 110 adjacent ends in the axial limiting roll 111 of crystallizing wheel 200 with the strand supporting mechanism; Be provided with in the termination of the adjacent end of said flip body with the strand supporting mechanism axially parallel in crystallizing wheel 200 axial be connected carrying roller 172, said flip body is hinged with frame 100 through the roller carrier shaft 171 that connects carrying roller 172; Said connection carrying roller 172 and limiting roll 111 adjacent and roll gap width and slab thickness between the two adapt.Form clamping through connecting 111 pairs of strands of carrying roller 172 and limiting roll; Can in switching process, form certain support and spacing to strand; Therefore can effectively reduce requirement, thereby reduce impact access bridge 110, rollgang 120, strand to reversal rate.
Further, the strand upset face that is formed by flip body is level and smooth curved surface; The extreme position that corresponding flip body overturns from the bottom to top, the strand that is formed by flip body overturn and form the gap that width and slab thickness adapt between the conveying curved surface of face and access bridge 110.Strand can extend upward along the gap that strand overturns between face and the conveying curved surface; Because the position-limiting action in gap; Therefore need not the base head to be delivered to rollgang 120, and then guaranteed the cooperation of strand with access bridge 110, rollgang 120 through the deadweight of strand through turning operation.Therefore, can shorten the strand length that needs upset greatly, the strand weight of upset is little, and reversal rate requires low, can further reduce the impact to access bridge 110, rollgang 120, strand; Simultaneously, the shortening of strand length has also been shortened the flip body lengths needed, has therefore further facilitated the setting of rushing board mechanism 170 and strand supporting mechanism.In addition, in process of production, because the fluctuation of roll bending, tandem rolling speed; Cause existing certain speed poor with continuous casting speed; Strand can arch upward at access bridge 110 places, and can carry out spacing to the strand that arches upward through the state of flip body of adjustment arc and support this moment, avoided the distortion and the fracture of strand.
Flip body can be made up of roller-way, arc etc.In instance as shown in the figure; The setting of arc flip body for ease; Concrete, said flip body is by flip body support 174 and be installed in 174 1 groups on flip body support and support carrying roller 173 and constitute, and each supports axially all being parallel to of carrying roller 173, and to connect carrying roller 172 axial; Said driving mechanism is 100 hinged by an end and frame, the other end and flip body support 174 hinged straight line driving mechanisms 175 constitute, and said straight line driving mechanism 175 is an oil cylinder.