CN104673984B - A kind of steel tube anneal heat treatment method - Google Patents
A kind of steel tube anneal heat treatment method Download PDFInfo
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- CN104673984B CN104673984B CN201510121847.XA CN201510121847A CN104673984B CN 104673984 B CN104673984 B CN 104673984B CN 201510121847 A CN201510121847 A CN 201510121847A CN 104673984 B CN104673984 B CN 104673984B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
Abstract
The invention discloses a kind of steel tube anneal heat treatment method, it is temperature required to solid solution that the method is that steel pipe is first put into heating by electric cooker, then takes out steel pipe and is placed in pond cooling；It is characterized in that, electric furnace body uses the interface docking vertically of two and half bodies of heater formed, pond is arranged on below body of heater, after steel pipe heats, directly two and half bodies of heater are opened so that steel pipe falls to cool down in pond below body of heater.The present invention has easy to operate, quickness and high efficiency, it is possible to shorten heat treatment transfer time, it is possible to increase the advantage of thermal effectiveness, it is ensured that treatment effect also improves product quality.
Description
Technical field
The present invention relates to a kind of steel pipe heat treatment equipment, particularly relate to a kind of steel tube anneal heat treatment method.
Background technology
During the cold rolling production of special steel pipe, need often the tubing rolled to be made annealing treatment, chill stress during to eliminate cold rolling, in order to successfully carry out subsequent processing.Console model electric furnace is used during annealing, first pipe fitting is placed on chassis, then open electric furnace door and chassis is pushed electric furnace, then after tubing is heated in electric furnace the temperature needed for solid solution, oven door opening is pulled out the tubing on chassis again, then uses driving the tubing being placed on chassis bin and bin together to be sling and put into cooling in pond.
This existing mode, owing to the gait of march of chassis is too slow, is affected by road speed again during lifting after coming out of the stove, simultaneously because steel pipe is hollow object, tube wall is relatively thin, and heat radiation is very fast, temperature required when steel pipe two end portions before steel pipe enters water has been turned black and has been less than solution treatment out and away.Causing above reason in addition to the wall thickness of tubing is a factor, the speed entering water during solid solution is also an important factor too slowly.Specifically, from the point of view of whole heat treatment process, material is after reaching solid solubility temperature, and power-off also opens the fire door of annealing furnace.Start charging chassis after door opened immediately, allow it exit in stove；Chassis arrival solid solution enters water level and postpones, and driving is put down suspension hook lifting tubing and walked to, above pond, the most slowly put down.Actually will suddenly decline in fire door temperature in time opening, when chassis travels out, temperature continues to reduce, and goes to solid solution when entering water position, and the most substantially turning black in the tubing two ends that original tube wall size is the least, middle portion temperature is also substantially to reduce.When material is sling and to be put in water by driving, the coolant-temperature gage that enters of part steel pipe has been substantially reduced.(actual process requires, needs Putting into water rapidly to process when arriving solid solution temperature.) owing to material enters the temperature decrease before water, this can affect the final mass of steel pipe in certain degree.
Therefore be necessary again to research and develop and a kind of carry out heat treatment for the component faster that dispels the heat such as similar steel pipe, it is possible to ensure thermal effectiveness, improve the technology of product quality.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the technical problem to be solved is: how to provide a kind of easy to operate, quickness and high efficiency, it is possible to shorten heat treatment transfer time, it is possible to increase thermal effectiveness, it is ensured that the steel tube anneal heat treatment method of product quality.
In order to solve above-mentioned technical problem, present invention employs following technical scheme:
A kind of steel tube anneal heat treatment method, it is temperature required to solid solution that the method is that steel pipe is first put into heating by electric cooker, then takes out steel pipe and is placed in pond cooling；It is characterized in that, electric furnace body uses the interface docking vertically of two and half bodies of heater formed, pond is arranged on below body of heater, after steel pipe heats, directly two and half bodies of heater are opened so that steel pipe falls to cool down in pond below body of heater.
So, when annealing heat treatment, pending steel pipe is put in body of heater, controls body of heater and close, be then heated to solid solubility temperature, control body of heater after power-off to open, then steel pipe cools down in can falling to the pond of lower section immediately, achieves solution treated technique rapidly, convenient to operation efficiently, improve heat treatment efficiency, it is ensured that product quality.
As optimization, the heat treatment system that have employed following structure obtains, described heat treatment system, including electric furnace and pond, electric furnace includes body of heater and is arranged at the electric heating device of furnace interior, and described body of heater is obtained, in closed at both ends state after body of heater fastening by left body of heater and the right body of heater docking fastening of appearance cross section semicircular in shape, body of heater is outside equipped with body of heater folding control device, and described pond is just to being arranged at below body of heater；Heat treatment system also includes pay-off, described pay-off, extend to below body of heater including being laid on ground and one end and be positioned at the pair of guide rails of length direction both sides, pond, also include the feeding trolley being equipped with on guide rail by roller, feeding trolley upper center is provided with the overall bracing frame triangular in shape of width, bracing frame upper end is provided with the overall support seat in inverted trapezoidal of width, support seat upper surface be arc and laminating carrying one cylindrical circular charge basket of entirety is set, charge basket is the most consistent with pond length direction and axial length is less than body of heater length；
During heat treatment, body of heater is in open mode, first pending steel pipe is encased in charge basket, then along guide rail, feeding trolley is moved to body of heater upright para-position to put, control body of heater by body of heater folding control device close up and pick up in body of heater by charge basket, then control feeding trolley and exit below body of heater, then control body of heater and fully come together closedown, by electric heating device, steel pipe is heated to solid melting temperatur；Then control body of heater to open so that charge basket directly falls in pond together with its interior steel pipe, after cooling, salvage charge basket and steel pipe；It is disposed.
So, steel pipe is placed in charge basket, then moves ahead along guide rail and retreats by feeding trolley, it is achieved feeding, very convenient fast.Simultaneously on feeding trolley, the triangle support frame of setting so that body of heater is during closing up, it is possible to first contact with charge basket and charge basket is picked up, and avoid contacting with the supporting construction below charge basket and causing feeding.Make to feed convenient smoothly.
As optimization, described body of heater folding control device, including crossing over the multiple supports being arranged at above pond and body of heater from the width direction, support is overall in inverted U-shaped and be intervally arranged along body of heater length direction, and pedestal upper end medium position is provided with suspended axle along body of heater length direction；Folding control device also includes extending, along left body of heater and outside oblique upper the most round about, the respective upper end of right body of heater, at least one pair of hanging handle formed, every pair of hanging handle infall is rotatably connected on suspended axle, is provided with producing thrust and the push-and-pull force application mechanism of pulling force of horizontal direction between every pair of hanging handle upper end.
So, the weight of body of heater is supported by suspended axle and cradle hangs, then the hanging handle by two lobe body of heater upper end thereof forms the structure of similar shears, gets final product opening and closing that are convenient and swift and that realize body of heater effortlessly by a push-and-pull force application mechanism, operates the most reliable.
A kind of as push-and-pull force application mechanism optimizes version, described push-and-pull force application mechanism includes a force rotary shaft being horizontally placed between every pair of hanging handle upper end, force rotating shaft terminal is provided with screw thread in opposite direction respective threaded engagement on the nut of a coupling, nut can be connected to the hanging handle upper end of correspondence vertical rotating, push-and-pull force application mechanism also includes the motor being fixedly installed on a hanging handle, and motor is connected with force rotary shaft and force rotary shaft can be driven to rotate.Specifically, in every pair of hanging handle, one of them hanging handle extending laterally outward on end nut and is fixedly installed a motor support plate, motor is fixedly installed in motor support plate.So simple in construction and convenient installation is fixed.
After so optimizing, when push-and-pull force application mechanism uses, driven by motor force rotary shaft forward or reverse, then by reverse thread and the corresponding nut screw connection effect of force rotating shaft terminal, can drive two nuts simultaneously toward relative to or contrary direction move, two hanging handles so can be driven to remove or close up, and then realize the closedown of body of heater by lever principle and open.This thrust force application mechanism simple in construction, convenient operation controls, and owing to being two hanging handles to be symmetrically loaded power simultaneously, it is possible to ensure the balance and stability of motor process.Ensure that the stability that body of heater opens and closes.
As optimization, two nuts on every pair of hanging handle are each horizontally set on the side of two hanging handle opposite side.After so optimizing, it is possible to better ensure that hanging handle is vertically exerted a force by force rotary shaft, it is to avoid produce the moment of torsion in other directions and affect operational stability.
As optimization, described left body of heater and right body of heater inner chamber lower end, near joint, are each provided with the string rotating drum along body of heater axial arranging.Rotating drum uper side surface is supporting surface.
So, arrange rotating drum body of heater is closed up and by be placed into charge basket (built-in steel pipe) pick up time, both sides, charge basket bottom are first to contact with rotating drum upper inside surface, then body of heater continues to close up so that suspending after being lifted up by charge basket by rotating drum, the most first lower section is installed after the support means of charge basket removes, then control body of heater and continue to close up；During so making body of heater close up, charge basket can be clamped in body of heater the most quickly.Force to lift by charge basket with the rolling friction formed by rotating drum during fashion material, rotate by rotating drum during blowing and charge basket is skidded off, can slow down and put the shock during material and abrasion, extend body of heater lower end joint and the service life of charge basket.After the rotating drum simultaneously arranged makes body of heater close up, charge basket is suspended being supported on rotating drum so that the steel pipe of heating fashionable dress charging basket can be uniformly heated, and improves thermal effectiveness.When the most preferably selecting, rotating drum is that the roller mounting seat of vertical state is arranged in body of heater inner chamber when being closed by body of heater.So, after body of heater is closed, the gravity of charge basket is to act on body of heater on vertical direction by roller mounting seat, decreases gravity as far as possible and remains at component on the side, beneficially body of heater and close up closed mode, it is ensured that the stability of heating process and reliability.
As optimization, on described left body of heater and right body of heater inner chamber lower end interface, at least interface of side stretches out along this wing furnace body radian direction and is formed with grafting block, and on opposite side interface, corresponding grafting block is provided with the inserting groove of coupling.
So, after body of heater is closed and is closed up, grafting block is inserted in the inserting groove of coupling, make its globality combined more preferable, charge basket action of gravity straight down, to after on the body of heater of side, can be remake by grafting block and use on opposite side body of heater, and then make two and half bodies of heater can bear the effect of gravity simultaneously, gravity is avoided to be converted into lateral tension force, it is ensured that the stability after body of heater closedown and reliability.Further, grafting block end is most advanced and sophisticated or arc, and convenient grafting block is inserted in inserting groove.
Preferably selecting to be to set up a feeding cylinder at guide rail away from the end of body of heater one end, the telescopic arm of feeding cylinder connects along guide rail direction and feeding trolley.As such, it is possible to realize moving ahead and retreating of feeding trolley by feeding cylinder so that it is feeding controls more convenient.
As optimization, being intervally arranged along short transverse inside described charge basket is provided with multi-compartment bed and shelves.
So, steel pipe can facilitate penstock installation with pavement layer by layer to mating formation on frame, make in heating process simultaneously, and steel pipe is uniformly heated, and improves thermal effectiveness.
As optimization, both sides, described pond are additionally provided with sleeper, and described guide rails assembling is on sleeper.In such manner, it is possible to improve guide rail stability.
As optimization, described body of heater outer layer is provided with steel plate, and internal layer is provided with refractory fibrous material layer.So furnace binding can be more light and handy, convenient control.
In sum, the present invention has easy to operate, quickness and high efficiency, it is possible to shorten heat treatment transfer time, it is possible to increase the advantage of thermal effectiveness, it is ensured that treatment effect also improves product quality.
Accompanying drawing explanation
Fig. 1 is the structural representation of the steel tube anneal heat treatment system that the present invention uses when implementing.
Fig. 2 is the side view of Fig. 1.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail.
A kind of steel tube anneal heat treatment method, during enforcement, first obtains a kind of steel tube anneal heat treatment system as shown in Figure 1-2, then implements this method by this system.This heat treatment system, including electric furnace and pond 1, electric furnace includes body of heater and is arranged at the electric heating device of furnace interior, wherein, described body of heater is docked fastening obtained by left body of heater 2 and the right body of heater 3 of appearance cross section semicircular in shape, in closed at both ends state after body of heater fastening, body of heater is outside equipped with body of heater folding control device, and described pond 1 is just to being arranged at below body of heater.
So, when annealing heat treatment, pending steel pipe is put in body of heater, controls body of heater by body of heater folding control device and close, be then heated to solid solubility temperature, control body of heater by body of heater folding control device after power-off to open, then steel pipe cools down in can falling to the pond of lower section immediately, achieves solution treated technique rapidly, convenient to operation efficiently, improve heat treatment efficiency, it is ensured that product quality.
In heat treatment system, described body of heater folding control device, including crossing over the multiple supports 4 being arranged at above pond 1 and body of heater from the width direction, support 4 entirety is inverted U-shaped and is intervally arranged along body of heater length direction, and support 4 upper center position is provided with suspended axle 5 along body of heater length direction；Folding control device also includes extending, along left body of heater 2 and outside oblique upper the most round about, the respective upper end of right body of heater 3, at least one pair of hanging handle 6 formed, every pair of hanging handle 6 infall is rotatably connected on suspended axle 5, is provided with producing thrust and the push-and-pull force application mechanism of pulling force of horizontal direction between every pair of hanging handle 6 upper end.
So, the weight of body of heater is supported by suspended axle and cradle hangs, then the hanging handle by two lobe body of heater upper end thereof forms the structure of similar shears, gets final product opening and closing that are convenient and swift and that realize body of heater effortlessly by a push-and-pull force application mechanism, operates the most reliable.
In heat treatment system, push-and-pull force application mechanism uses following a kind of optimization version, described push-and-pull force application mechanism includes a force rotary shaft 7 being horizontally placed between every pair of hanging handle 6 upper end, force rotary shaft 7 two ends are provided with screw thread in opposite direction respective threaded engagement on the nut 8 of a coupling, nut 8 can be connected to the hanging handle upper end of correspondence vertical rotating, push-and-pull force application mechanism also includes the motor 9 being fixedly installed on a hanging handle, and motor 9 is connected with force rotary shaft 7 and force rotary shaft 7 can be driven to rotate.Specifically, in every pair of hanging handle 6, one of them hanging handle extending laterally outward on end nut and is fixedly installed a motor support plate 10, motor 9 is fixedly installed in motor support plate 10.So simple in construction and convenient installation is fixed.
So, when push-and-pull force application mechanism uses, driven by motor force rotary shaft forward or reverse, then by reverse thread and the corresponding nut screw connection effect of force rotating shaft terminal, can drive two nuts simultaneously toward relative to or contrary direction move, two hanging handles so can be driven to remove or close up, and then realize the closedown of body of heater by lever principle and open.This thrust force application mechanism simple in construction, convenient operation controls, and owing to being two hanging handles to be symmetrically loaded power simultaneously, it is possible to ensure the balance and stability of motor process.Ensure that the stability that body of heater opens and closes.
In heat treatment system, two nuts 8 on every pair of hanging handle 6 are each horizontally set on the side of two hanging handle 6 opposite side.In such manner, it is possible to better ensure that hanging handle is vertically exerted a force by force rotary shaft, it is to avoid produce the moment of torsion in other directions and affect operational stability.
In heat treatment system, described left body of heater 2 and right body of heater 3 inner chamber lower end, near joint, are each provided with the string rotating drum 11 along body of heater axial arranging.Rotating drum 11 uper side surface is supporting surface.
So, arrange rotating drum body of heater is closed up and by be placed into charge basket (built-in steel pipe) pick up time, both sides, charge basket bottom are first to contact with rotating drum upper inside surface, then body of heater continues to close up so that suspending after being lifted up by charge basket by rotating drum, the most first lower section is installed after the support means of charge basket removes, then control body of heater and continue to close up；During so making body of heater close up, charge basket can be clamped in body of heater the most quickly.Force to lift by charge basket with the rolling friction formed by rotating drum during fashion material, rotate by rotating drum during blowing and charge basket is skidded off, can slow down and put the shock during material and abrasion, extend body of heater lower end joint and the service life of charge basket.After the rotating drum simultaneously arranged makes body of heater close up, charge basket is suspended being supported on rotating drum so that the steel pipe of heating fashionable dress charging basket can be uniformly heated, and improves thermal effectiveness.When the most preferably selecting, rotating drum is that the roller mounting seat of vertical state is arranged in body of heater inner chamber when being closed by body of heater.So, after body of heater is closed, the gravity of charge basket is to act on body of heater on vertical direction by roller mounting seat, decreases gravity as far as possible and remains at component on the side, beneficially body of heater and close up closed mode, it is ensured that the stability of heating process and reliability.
In heat treatment system, on described left body of heater 2 and right body of heater 3 inner chamber lower end interface, at least interface of side stretches out along this wing furnace body radian direction and is formed with grafting block 13, and on opposite side interface, corresponding grafting block 13 is provided with the inserting groove 14 of coupling.
So, after body of heater is closed and is closed up, grafting block is inserted in the inserting groove of coupling, make its globality combined more preferable, charge basket action of gravity straight down, to after on the body of heater of side, can be remake by grafting block and use on opposite side body of heater, and then make two and half bodies of heater can bear the effect of gravity simultaneously, gravity is avoided to be converted into lateral tension force, it is ensured that the stability after body of heater closedown and reliability.Further, grafting block end is most advanced and sophisticated or arc, and convenient grafting block is inserted in inserting groove.
Heat treatment system also includes pay-off, described pay-off, extend to below body of heater including being laid on ground and one end and be positioned at the pair of guide rails 15 of length direction both sides, pond 1, also include the feeding trolley 16 being equipped with on guide rail by roller, feeding trolley 16 upper center is provided with the overall bracing frame 17 triangular in shape of width, bracing frame 17 upper end is provided with the overall support seat 18 in inverted trapezoidal of width, support seat 18 upper surface be arc and laminating carrying one cylindrical circular charge basket of entirety 19 is set, charge basket 19 is the most consistent with pond 1 length direction.
So, steel pipe is placed in charge basket, then moves ahead along guide rail and retreats by feeding trolley, it is achieved feeding, very convenient fast.Simultaneously on feeding trolley, the triangle support frame of setting so that body of heater is during closing up, it is possible to first contact with charge basket and charge basket is picked up, and avoid contacting with the supporting construction below charge basket and causing feeding.Make to feed convenient smoothly.
Heat treatment system preferably selects, and sets up a feeding cylinder at guide rail away from the end of body of heater one end, and the telescopic arm of feeding cylinder connects along guide rail direction and feeding trolley.As such, it is possible to realize moving ahead and retreating of feeding trolley by feeding cylinder so that it is feeding controls more convenient.
In heat treatment system, described charge basket 19 is internal to be intervally arranged along short transverse and is provided with multi-compartment bed and shelves 20.
So, steel pipe can facilitate penstock installation with pavement layer by layer to mating formation on frame, make in heating process simultaneously, and steel pipe is uniformly heated, and improves thermal effectiveness.
In heat treatment system, both sides, described pond 1 are additionally provided with sleeper 21, and described guide rail 15 is arranged on sleeper 21.In such manner, it is possible to improve guide rail stability.
In heat treatment system, described body of heater outer layer is provided with steel plate, and internal layer is provided with refractory fibrous material layer.So furnace binding can be more light and handy, convenient control.
During said system heat treatment, body of heater is first in open mode, first pending steel pipe is encased in charge basket, then along guide rail, feeding trolley is moved to body of heater upright para-position to put, control body of heater by body of heater folding control device close up and pick up in body of heater by charge basket, then control feeding trolley and exit below body of heater, then control body of heater and fully come together closedown, by electric heating device, steel pipe is heated to solid melting temperatur；Then control body of heater to open so that charge basket directly falls in pond together with its interior steel pipe, after cooling, salvage charge basket and steel pipe；It is disposed.Therefore this method has easy to operate, quickness and high efficiency, it is possible to shorten heat treatment transfer time, it is possible to increase the advantage of thermal effectiveness, it is ensured that treatment effect also improves product quality.
Claims (9)
1. a steel tube anneal heat treatment method, it is temperature required to solid solution that the method is that steel pipe is first put into heating by electric cooker, then takes out steel pipe and is placed in pond cooling；It is characterized in that, electric furnace body uses the interface docking vertically of two and half bodies of heater formed, pond is arranged on below body of heater, after steel pipe heats, directly two and half bodies of heater are opened so that steel pipe falls to cool down in pond below body of heater；
The heat treatment system that have employed following structure obtains, described heat treatment system, including electric furnace and pond, electric furnace includes body of heater and is arranged at the electric heating device of furnace interior, described body of heater is obtained by left body of heater and the right body of heater docking fastening of appearance cross section semicircular in shape, in closed at both ends state after body of heater fastening, body of heater is outside equipped with body of heater folding control device, and described pond is just to being arranged at below body of heater；Heat treatment system also includes pay-off, described pay-off, extend to below body of heater including being laid on ground and one end and be positioned at the pair of guide rails of length direction both sides, pond, also include the feeding trolley being equipped with on guide rail by roller, feeding trolley upper center is provided with the overall bracing frame triangular in shape of width, bracing frame upper end is provided with the overall support seat in inverted trapezoidal of width, support seat upper surface be arc and laminating carrying one cylindrical circular charge basket of entirety is set, charge basket is the most consistent with pond length direction and axial length is less than body of heater length；
During heat treatment, body of heater is in open mode, first pending steel pipe is encased in charge basket, then along guide rail, feeding trolley is moved to body of heater upright para-position to put, control body of heater by body of heater folding control device close up and pick up in body of heater by charge basket, then control feeding trolley and exit below body of heater, then control body of heater and fully come together closedown, by electric heating device, steel pipe is heated to solid melting temperatur；Then control body of heater to open so that charge basket directly falls in pond together with its interior steel pipe, after cooling, salvage charge basket and steel pipe；It is disposed.
2. steel tube anneal heat treatment method as claimed in claim 1, it is characterized in that, described body of heater folding control device, including crossing over the multiple supports being arranged at above pond and body of heater from the width direction, support is overall in inverted U-shaped and be intervally arranged along body of heater length direction, and pedestal upper end medium position is provided with suspended axle along body of heater length direction；Folding control device also includes extending, along left body of heater and outside oblique upper the most round about, the respective upper end of right body of heater, at least one pair of hanging handle formed, every pair of hanging handle infall is rotatably connected on suspended axle, is provided with producing thrust and the push-and-pull force application mechanism of pulling force of horizontal direction between every pair of hanging handle upper end.
3. steel tube anneal heat treatment method as claimed in claim 2, it is characterized in that, described push-and-pull force application mechanism includes a force rotary shaft being horizontally placed between every pair of hanging handle upper end, force rotating shaft terminal is provided with screw thread in opposite direction respective threaded engagement on the nut of a coupling, nut can be connected to the hanging handle upper end of correspondence vertical rotating, push-and-pull force application mechanism also includes the motor being fixedly installed on a hanging handle, and motor is connected with force rotary shaft and force rotary shaft can be driven to rotate.
4. steel tube anneal heat treatment method as claimed in claim 3, it is characterised in that two nuts on every pair of hanging handle are each horizontally set on the side of two hanging handle opposite side.
5. steel tube anneal heat treatment method as claimed in claim 2, it is characterised in that described left body of heater and right body of heater inner chamber lower end, near joint, are each provided with the string rotating drum along body of heater axial arranging.
6. steel tube anneal heat treatment method as claimed in claim 2, it is characterized in that, on described left body of heater and right body of heater inner chamber lower end interface, the at least interface of side stretches out along this wing furnace body radian direction and is formed with grafting block, and on opposite side interface, corresponding grafting block is provided with the inserting groove of coupling.
7. steel tube anneal heat treatment method as claimed in claim 1, it is characterised in that being intervally arranged along short transverse inside described charge basket is provided with multi-compartment bed and shelves.
8. steel tube anneal heat treatment method as claimed in claim 1, it is characterised in that both sides, described pond are additionally provided with sleeper, and described guide rails assembling is on sleeper.
9. steel tube anneal heat treatment method as claimed in claim 1, it is characterised in that described body of heater outer layer is provided with steel plate, and internal layer is provided with refractory fibrous material layer.
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| CN114959524B (en) * | 2022-06-10 | 2023-05-30 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Solution heat treatment device and solution method for nickel-based alloy processing |
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| JPH06192750A (en) * | 1992-12-25 | 1994-07-12 | Daido Steel Co Ltd | Vertical heat treatment furnace |
| CN2236499Y (en) * | 1995-10-10 | 1996-10-02 | 苏文祯 | General heat treating apparatus |
| CN201574175U (en) * | 2009-12-10 | 2010-09-08 | 平顶山市中泰伟业机电有限公司 | Vertical quenching furnace |
| CN103710512B (en) * | 2014-01-11 | 2016-04-20 | 广东志达精密管业制造有限公司 | Steel-pipe annealing device and annealing process thereof |
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