CN101525682A - Annealing furnace forming oxide on surface of punching sheet - Google Patents
Annealing furnace forming oxide on surface of punching sheet Download PDFInfo
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- CN101525682A CN101525682A CN200910024687A CN200910024687A CN101525682A CN 101525682 A CN101525682 A CN 101525682A CN 200910024687 A CN200910024687 A CN 200910024687A CN 200910024687 A CN200910024687 A CN 200910024687A CN 101525682 A CN101525682 A CN 101525682A
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Abstract
The invention relates to a device for performing the insulation treatment on the outer surface of a punching sheet of a transformer or motor, in particular to an annealing furnace forming oxide on the surface of the punching sheet. The annealing furnace is internally provided with a preheating zone used for the punching sheet to preheat and remove oil, and a high-temperature zone used for the punching sheet to decarburize; the annealing furnace is internally provided with a cooling zone used for the punching sheet to reduce the temperature and cool, a purifying zone used for separating an oxidizing zone from the cooling zone, and the oxidizing zone used for forming the oxide on the surface of the punching sheet; a conveying device is arranged in the annealing furnace and passes through the preheating zone, the high-temperature zone, the cooling zone, the purifying zone and the oxidizing zone; the oxidizing zone is internally provided with an oxidizing device processing the oxide of the punching sheet, an atmosphere circulating device and a furnace cavity atmosphere control device, wherein the oxidizing device is communicated with the atmosphere circulating device, the oxidizing device is composed of an atmosphere spraying device and an atmosphere injection tube, and the atmosphere spraying device is arranged on the atmosphere injection tube. The invention improves the efficiency and the uniformity of the oxide formation.
Description
Technical field
The present invention relates to a kind of the punching outside surface of transformer or motor be carried out the device of insulation processing, especially for the annealing furnace that forms oxide compound on the punching surface.
Background technology
Motor, transformer and other electronics generally contain a magnetic pole that is formed by stacking by the steel punching, and the magnetic circuit that the magnetic pole that is superimposed by these steel punchings forms transmits magnetic flux.In order to obtain good magnetic performance; usually need be with steel punching annealed processing in having the box-type furnace of continuous roller; the performance of punching depends on the magnetic property of steel; representative best magnetic property is that material obtains by thermal treatment or sheet punching press after annealing; existing annealing furnace; it is very difficult that the interior punching in a row of stove will obtain complete insulated by oxide protection; particularly; when punching with wire binding together; oxidation mediators can not spread between the small gap between punching uniformly, and oxidation effectiveness is very poor.
Goal of the invention
The oxidation mediators that the present invention is directed to above-mentioned technology can not spread between the small gap between punching uniformly, and the uneven weak point of oxidation effectiveness provides a kind of effective annealing furnace that is used for forming on the punching surface oxide compound.
Realize that technical scheme of the present invention is as follows:
Be used for forming the annealing furnace of oxide compound on the punching surface, comprise the preheating zone that is used for punching preheating oil removing in the stove, the high-temperature zone that is used for the punching decarburization, be provided with in the stove and be used for punching cooling refrigerative cooling zone, the purifying area that is used for isolation oxidation district and cooling zone, be used for forming the oxidation zone of oxide compound on the punching surface, there is a transport unit to be provided with in the stove, this device is through the preheating zone, the high-temperature zone, the cooling zone, purifying area, in the oxidation zone, be provided with the oxidation unit of processing punching oxide compound in the oxidation zone, atmosphere circulator, the furnace chamber atmosphere control device, oxidation unit and atmosphere circulator are connected, oxidation unit is made up of atmosphere jet apparatus and atmosphere syringe, and the atmosphere jet apparatus is arranged on the atmosphere syringe.
Described atmosphere circulator is by the atmosphere extraction tube, house steward bleeds, conduit component, the high temperature fan, the change speed motor of control high temperature fan, the pressure pipeline parts, through hole and stagnation pressure solenoid are formed, several atmosphere extraction pipes are arranged on sidewall of the furnace body and are communicated with the house steward that bleeds, the high temperature fan is arranged on the body of heater top by being arranged on its lateral change speed motor control, the high temperature fan is provided with inlet and gas barrier, enter the mouth and bleed and be communicated with by conduit component between the house steward, pass through the pressure pipeline members between gas barrier and the through hole, the stagnation pressure solenoid is arranged on through hole and the pressure pipeline members of passing through sidewall of the furnace body in the body of heater, is provided with isolated material in the described house steward of bleeding.
Described furnace chamber atmosphere control device is made up of motor and some heating units of air-circulating fan, Control Circulation fan, and air-circulating fan is arranged in the furnace chamber by being arranged on the electric machine control of furnace roof.
Described transport unit is made up of e Foerderanlage and pallet, and e Foerderanlage is made up of the roller of some even settings, and the end of roller is provided with gear and makes roller turn by the chain driven gear.
Described atmosphere jet apparatus is several atmosphere splash heads, and this atmosphere splash head is the jet hole that is arranged on the atmosphere syringe, and the trend of atmosphere jet apparatus is vertical with the travel direction of pallet, and described atmosphere splash head is arranged in the gap between the roller.
Described oxidation unit and atmosphere circulator are connected by L type parts.
Described purifying area is a purification channel, is provided with in this purification channel to water-cooled tube and cooling system, and water-cooled tube is arranged in the purification channel, and described cooling system is arranged on below the transport unit, and cooling tube is provided with some heat exchanging fins.
Have a pump circulation fan and temperature sensor in the described purification channel.
Described purification channel is provided with an opening, and temperature sensor is arranged in this opening.
Adopted such scheme, the atmosphere splash head is arranged in the gap between the roller, just can make the punching position between the gap obtain effective oxidation, the temperature of the oxidizing gas in the timely controlled oxidation district of heating unit energy, air-circulating fan is distributed to the heat that heating unit produced in the oxidation zone uniformly, the condition of creating for abundant oxidation, the oxidizing gas of the oxidation zone during atmosphere circulator circulates efficiently, the water-cooled tube and the cooling system that are provided with in the purifying area can further cool off punching, the temperature sensor that the purification channel top is provided with can in time reflect the interior temperature of purification channel in computer, the decompression in controlled chilling district and supercharging.The invention has the beneficial effects as follows and to raise the efficiency the homogeneity that forms with oxide compound.
Description of drawings
Fig. 1 is the part side-view of annealing furnace purifying area of the present invention and oxidation zone;
Fig. 2 is the sectional view along the II-II line among Fig. 1.
In the accompanying drawing, 8 is the atmosphere jet apparatus, and 9 is gear, 11 cooling zones, 12 is purifying area, and 12A is a container, and 13 is oxidation zone, 13A is a cavity volume, and 14 is transmitting device, and 15 is roller, 16 is pallet, and 17 are punching, and 19 is cooling system, 20 is water-cooled tube, and 21 is fan, and 22 is motor, 23 is opening, and 24 is temperature sensor, and 25 are the oxidation door, 25A is a cable, and 26 is the atmosphere syringe, and 26A is an exhaust component, 27 is the pressure main(header), and 28 is through hole, and 29 is the pressure pipeline parts, 30 is gas barrier, and 31 is the high temperature fan, 32 change speed motoies, 33 are inlet, and 34 is conduit component, and 35 for bleeding house steward, 35A is an isolated material, and 36 is the atmosphere extraction tube, and 37 is air-circulating fan, 38 is motor, and 39 is heating unit, and 40 is sealing coat.300 is computer.
Embodiment
As Fig. 1, shown in Figure 2, be used for forming the annealing furnace of oxide compound on the punching surface, comprise the preheating zone that is used for punching preheating oil removing in the stove, the high-temperature zone that is used for the punching decarburization, be provided with cooling zone 11 in the stove, purifying area 12, oxidation zone 13, one transport unit is provided with in the stove, this device is through the preheating zone, the high-temperature zone, cooling zone 11, purifying area 12, in the oxidation zone 13, be provided with the oxidation unit of processing punching 17 oxide compounds in the oxidation zone 13, atmosphere circulator, the furnace chamber atmosphere control device, oxidation unit and atmosphere circulator are connected by L type parts 26A, oxidation unit is made up of atmosphere jet apparatus and atmosphere syringe 26, the atmosphere jet apparatus is arranged on the atmosphere syringe 26, atmosphere circulator is by atmosphere extraction tube 36, house steward 35 bleeds, conduit component 34, high temperature fan 31, the change speed motor 32 of control high temperature fan, pressure pipeline parts 29, through hole 28 and stagnation pressure solenoid 27 are formed, several atmosphere extraction pipes 36 are arranged on sidewall of the furnace body and are communicated with the house steward 35 that bleeds, high temperature fan 31 is arranged on the body of heater top by being arranged on its lateral change speed motor 32 controls, the high temperature fan is provided with inlet 33 and gas barrier 30, inlet 33 and bleed between the house steward 35 is communicated with by conduit component 34, be communicated with by pressure pipeline parts 29 between gas barrier 30 and the through hole 28, stagnation pressure solenoid 27 is arranged on the through hole 28 that passes through sidewall of the furnace body in the body of heater and is communicated with 29 in pressure pipeline portion, bleed and be provided with isolated material 35A in the house steward 35, the furnace chamber atmosphere control device is by air-circulating fan 37, the motor 38 of Control Circulation fan 37 and some heating units 39 are formed, air-circulating fan 37 is arranged on the electric machine control 38 by being arranged on furnace roof in the furnace chamber, transport unit is made up of e Foerderanlage 14 and pallet 16, e Foerderanlage 14 is made up of the roller 15 of some even settings, the end of roller is provided with gear 9, the atmosphere jet apparatus is several atmosphere splash heads 8, this atmosphere splash head 8 is for being arranged on the jet hole on the atmosphere syringe 26, the trend of atmosphere jet apparatus is vertical with the travel direction of pallet 16, atmosphere splash head 8 is arranged in the gap between the roller 15, be provided with inner chamber 13A in the oxidation zone, be provided with sealing coat 40 in the inner chamber 13A, purifying area is a purification channel 12, be provided with in this purification channel to water-cooled tube 20 and cooling system 19, water-cooled tube 20 is arranged in the purification channel 12, cooling system 19 is arranged on below the transport unit, cooling tube 20 is provided with some heat exchanging fins, have a pump circulation fan 21 and temperature sensor 24 in the purification channel 12, purification channel 12 is provided with an opening 23, and temperature sensor 24 is arranged in this opening 23.
The just part of in Fig. 1, representing of annealing furnace.Therefore, annealing furnace in the figure comprises the pallet 16 that a transmitting device 14 that has a roller transmits punching 17, and the roller 15 of e Foerderanlage 14 is driven by chain driven gear 9.Transmitting device 14 is high-temperature zone (not shown), cooling zone 11, purifying area 12, the oxidation zone 13 from passing annealing furnace successively.Carry out anneal oxidation by following steps:
At first be the preheating oil removing: punching is transported in 375 ℃-425 ℃ the temperature environment and carries out preheating, to remove the oil on punching surface.
Next is heating: the punching after the preheating oil removing is transported to the high-temperature zone anneals under the temperature environment about 800 ℃, in the atmosphere of high-temperature zone, feed nitrogen and hydrogen and little air and in this high-temperature zone, flow, make punching decarburization, recovery and recrystallization and remove internal stress.The nitrogen flow that feeds in the high-temperature zone is 45-55m
3/ h, the flow of hydrogen are 7-10m
3/ h; In the present embodiment, the flow of nitrogen is 50m
3/ h, the flow of hydrogen are 8.5m
3/ h.Atmosphere in the high-temperature zone can be protected by feeding nitrogen, the punching peroxidation can be prevented by feeding hydrogen.
The 3rd is cooling: punching is transported to the cooling zone punching 11 is cooled to 600-1000 temperature range.
The 4th is to purify: carry punching to purifying area 12, by purifying area cooling zone and oxidation zone are isolated, again punching is transported to oxidation zone.By acting on of purifying area, can prevent to blast after hydrogen from entering purifying area and air mixed every anti-.In addition, purifying area 12 comprises a container 12A, and top layer is arranged below, is provided with a fan 21 by the pump circulation of a motor 22 drivings in this container.The top of purifying area 12 is provided with opening 23, by at these opening 23 places, is provided with one or more temperature sensors 24 of the temperature in the above-mentioned purifying area of perception, and this temperature sensor is an infrared pyrometer.Temperature sensor 24 is connected with a computer 300, comes the decompression and the force(d) (draft) fan in controlled chilling district by this computer, is 600-1000 °F to guarantee the controlled chilling district with the temperature of the punching that guarantees to output to purifying area.Temperature in order to ensure purifying area is 600-1000 °F, also be provided with a cooling system 19 at purifying area 12, this cooling system has numerous cooling tubes, and these cooling tubes are formed the place of their position below container 12A by suitable hydraulic pipe and the pipe that has radiator element.An extra water-cooled tube that has radiator element 20 is installed in place on container 12A.The described water that has in the cooling fin tube all comes from the water coolant in the cooling zone 11.Feed nitrogen and flow in this high-temperature zone in purifying area, the flow of this nitrogen is 10-12m
3/ h, in the present embodiment, the nitrogen flow of employing is 11.5m
3/ h.In addition, by regulating punching in the residence time of purifying area, survey the temperature equalisation that guarantee in this purifying area based on the temperature in the punching of purifying area for also, the temperature that is beneficial to the punching of better assurance purifying area like this is 600-1000 °F.
In purifying area, the water in the water-cooled tube has extra cooling can further be provided to oxidation zone, can be beneficial to the production efficiency that improves oxidation zone and whole annealing furnace like this.On the output limit of purification channel 12, an oxidation door 25 is controlled by a cable 25A.
The 5th is oxidation: feeding nitrogen and air flow in this oxidation zone in the atmosphere of oxidation zone 13, and the nitrogen flow that feeds in the oxidation zone is 7-10m
3/ h, air nitrogen flow are 1.2-2m
3/ h, in the present embodiment, the nitrogen flow of employing is 8.5m
3/ h, the flow of the air of employing are 1.7m
3/ h.Oxidation zone 13 forms a cavity volume 13A, can see in Fig. 2.Cavity volume 13A has sealing coat 40 on the wall.Heating unit 39 is installed on the top of cavity volume 13A and is used for oxide treatment.An air-circulating fan 37 that is driven by motor 38 also is installed in the cavity volume 13A,, can makes the atmosphere in the cavity volume 13A more even by the driving of air-circulating fan.The speed of air-circulating fan 37 can be manual or regulate automatically.
In the oxidation zone 13 and 15 of the rollers of e Foerderanlage 14, a numerous atmosphere syringe 26 has been installed, each pipe has numerous atmosphere jet apparatus 8 at upper surface, this atmosphere jet apparatus makes oxidizing atmosphere form turbulent flow, be used to upset the boundary layer of the blunt atmosphere of punching, and for the punching surface provides reacted constituent, and replenish the required reacted constituent of oxidation between punching.Because consistent pressure exists in each atmosphere jet apparatus 8, therefore, the internal diameter of atmosphere syringe 26 is selecteed.In addition, the atmosphere jet apparatus is opening or the hole on atmosphere syringe top, the characteristic of the size decision spout in opening or hole, and opening or hole also can adopt other as nozzle or rectangle or more complicated fan design.The velocity curve that the atmosphere jet apparatus sprays is the function of pressure difference and bore dia, and velocity attenuation is the function from square distance there, hole.Thereby, be important from trays the shower nozzle distance there that will load oxidized part.
It should be noted that, atmosphere syringe 26 is installed in the following and side very close to pallet 16, because pipeline is placed between the roller 15, therefore connect a transmission direction and become vertical exhaust component 26A with pallet 16 at the atmosphere jet apparatus, this exhaust component is the exhaust component that is the L type.Exhaust component 26A holds in addition and connects a pressure main(header) 27 who is placed in cavity volume 13A.Pressure main(header) 27 through one at 28 to the pressure pipeline parts 29 in the hole of cavity volume 13A side wall, these pressure pipeline parts connect a gas barrier 30 that is quickened by high temperature fan 31, high temperature fan 31 is driven by change speed motor 32, variable speed drive motor 32 can be manually and the adjusting of automatization, adjusts oxidation and regulate to reach fixed production efficiency., connect to high temperature fan 31 at inlet 33 by a conduit component 34.Bottom at conduit component 34 connects the house steward 35 that bleeds, and the outside has isolated material 35A to surround.The house steward 35 that bleeds connects atmosphere extraction tube 36, and atmosphere extraction tube 36 is a plurality of, and they are arranged in a row on cavity volume 13A.
13 li of controlled oxidation zones, punching surface in a row will obtain a kind of difficulty of oxide compound, has overcome by improving the cooling optimization method.Particularly, bind together when punching is stranded with iron wire, oxidation mediators can spread between the small gap between punching uniformly.Before reacting, spread again by any oxidizing reaction layer with steel.Equally, owing to strengthen cooling, can shorten the cooling time that is positioned at the air cooling zone after the oxidation zone in oxidation zone.
Claims (9)
1, be used for forming the annealing furnace of oxide compound on the punching surface, comprise the preheating zone that is used for punching preheating oil removing in the stove, the high-temperature zone that is used for the punching decarburization, it is characterized in that: be provided with in the stove and be used for punching cooling refrigerative cooling zone, the purifying area that is used for isolation oxidation district and cooling zone, be used for forming the oxidation zone of oxide compound on the punching surface, there is a transport unit to be provided with in the stove, this device is through the preheating zone, the high-temperature zone, the cooling zone, purifying area, in the oxidation zone, be provided with the oxidation unit of processing punching oxide compound in the oxidation zone, atmosphere circulator, the furnace chamber atmosphere control device, oxidation unit and atmosphere circulator are connected, oxidation unit is made up of atmosphere jet apparatus and atmosphere syringe, and the atmosphere jet apparatus is arranged on the atmosphere syringe.
2, the annealing furnace that is used for forming oxide compound according to claim 1 on the punching surface, it is characterized in that: described atmosphere circulator is by the atmosphere extraction tube, house steward bleeds, conduit component, the high temperature fan, the change speed motor of control high temperature fan, the pressure pipeline parts, through hole and stagnation pressure solenoid are formed, several atmosphere extraction pipes are arranged on sidewall of the furnace body and are communicated with the house steward that bleeds, the high temperature fan is arranged on the body of heater top by being arranged on its lateral change speed motor control, the high temperature fan is provided with inlet and gas barrier, enter the mouth and bleed and be communicated with by conduit component between the house steward, pass through the pressure pipeline members between gas barrier and the through hole, the stagnation pressure solenoid is arranged on through hole and the pressure pipeline members of passing through sidewall of the furnace body in the body of heater, is provided with isolated material in the described house steward of bleeding.
3, the annealing furnace that is used for forming oxide compound according to claim 1 on the punching surface, it is characterized in that: described furnace chamber atmosphere control device is made up of motor and some heating units of air-circulating fan, Control Circulation fan, and air-circulating fan is arranged in the furnace chamber by being arranged on the electric machine control of furnace roof.
4, the annealing furnace that is used for forming oxide compound according to claim 1 on the punching surface, it is characterized in that: described transport unit is made up of e Foerderanlage and pallet, e Foerderanlage is made up of the roller of some even settings, the end of roller is provided with gear, makes roller turn by the chain driven gear.
5, the annealing furnace that is used for forming oxide compound according to claim 1 on the punching surface, it is characterized in that: described atmosphere jet apparatus is several atmosphere splash heads, this atmosphere splash head is the jet hole that is arranged on the atmosphere syringe, the trend of atmosphere jet apparatus is vertical with the travel direction of pallet, and described atmosphere splash head is arranged in the gap between the roller.
6, the annealing furnace that is used for forming on the punching surface oxide compound according to claim 1, it is characterized in that: described oxidation unit and atmosphere circulator are connected by L type parts.
7, the annealing furnace that is used for forming oxide compound according to claim 1 on the punching surface, it is characterized in that: described purifying area is a purification channel, be provided with in this purification channel to water-cooled tube and cooling system, water-cooled tube is arranged in the purification channel, described cooling system is arranged on below the transport unit, and cooling tube is provided with some heat exchanging fins.
8, the annealing furnace that is used for forming on the punching surface oxide compound according to claim 8 is characterized in that: have a pump circulation fan and temperature sensor in the described purification channel.
9, the annealing furnace that is used for forming on the punching surface oxide compound according to claim 8, it is characterized in that: described purification channel is provided with an opening, and temperature sensor is arranged in this opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910024687A CN101525682A (en) | 2009-02-26 | 2009-02-26 | Annealing furnace forming oxide on surface of punching sheet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910024687A CN101525682A (en) | 2009-02-26 | 2009-02-26 | Annealing furnace forming oxide on surface of punching sheet |
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| CN101525682A true CN101525682A (en) | 2009-09-09 |
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|---|---|---|---|
| CN200910024687A Pending CN101525682A (en) | 2009-02-26 | 2009-02-26 | Annealing furnace forming oxide on surface of punching sheet |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106524968A (en) * | 2016-11-25 | 2017-03-22 | 国核宝钛锆业股份公司 | Continuous annealing furnace uniform temperature zone on-line determination method |
| CN107429309A (en) * | 2015-04-02 | 2017-12-01 | 考克利尔维修工程 | Method and apparatus for reaction controlling |
| CN109097536A (en) * | 2018-09-08 | 2018-12-28 | 嘉兴市合工业电炉有限公司 | A kind of heat-tinting annealing furnace of stainless steel work-piece |
-
2009
- 2009-02-26 CN CN200910024687A patent/CN101525682A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107429309A (en) * | 2015-04-02 | 2017-12-01 | 考克利尔维修工程 | Method and apparatus for reaction controlling |
| CN107429309B (en) * | 2015-04-02 | 2021-06-18 | 考克利尔维修工程 | Annealing furnace, method for controlling surface reactions on a steel strip and steel strip |
| CN106524968A (en) * | 2016-11-25 | 2017-03-22 | 国核宝钛锆业股份公司 | Continuous annealing furnace uniform temperature zone on-line determination method |
| CN109097536A (en) * | 2018-09-08 | 2018-12-28 | 嘉兴市合工业电炉有限公司 | A kind of heat-tinting annealing furnace of stainless steel work-piece |
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Open date: 20090909 |