CN203346440U - Heat treatment and straightening integrated device used in wire rod production process - Google Patents
Heat treatment and straightening integrated device used in wire rod production process Download PDFInfo
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- CN203346440U CN203346440U CN 201320218275 CN201320218275U CN203346440U CN 203346440 U CN203346440 U CN 203346440U CN 201320218275 CN201320218275 CN 201320218275 CN 201320218275 U CN201320218275 U CN 201320218275U CN 203346440 U CN203346440 U CN 203346440U
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Abstract
The utility model provides a heat treatment and straightening integrated device used in the wire rod production process. The heat treatment and straightening integrated device comprises a feeding device, a heat treatment furnace, a cooling device, a multi-roll straightening machine and a finished product collecting device which are connected sequentially, and working surfaces of the feeding device, the heat treatment furnace, the cooling device, the multi-roll straightening machine and the finished product collecting device are located in the same horizontal plane; wire rods on a storage platform of the feeding device naturally roll to feed rollers and are fed into the heat treatment furnace; the heat treatment furnace adopts a tubular resistor heat treatment furnace and allows a single wire rod to pass through the center of the heat treatment furnace, and the cooling device forcefully cools the wire rods finishing heat treatment by utilizing compressed air; the multi-roll straightening machine precisely straightens the wire rods; and the finished product collecting device conveys the straightened wire rods to a material frame. Compared with the traditional technology, the heat treatment and straightening integrated device has the advantages of high degree of automation of production, consistency of organization, performance and straightness of products, good batch stability and the like, and is particularly suitable for medium and small scale production of straight titanium alloy wire rods with small specifications and high performance.
Description
Technical field
The utility model relates to excellent wire production field, particularly relates to a kind of thermal treatment for excellent wire production process-aligning integrated apparatus.
Background technology
In fields such as space flight, aviation and medical treatment, usually need to use the excellent wire rod of the materials such as high performance titanium alloy (as Ti-6Al-4V, Ti-6Al-7Nb etc.), the characteristics of this class rod wire rod are that product specification is little, specification limit is φ 5～20 ㎜ * 2000-3000 ㎜, but consistence and batch stability of product is had to very high requirement.Just because of the stability to this series products require highly, the quality of domestic titanium alloy bar wire rod does not often reach design requirements, so the titanium alloy bar wire rod goes back dependence on import so far, expensive, cost is high.
The titanium alloy bar wire rod of production high-performance, small dimension has two kinds of methods usually:
A kind of is to make wire rod by vertical rolling line, then heat-treat, the operation such as aligning, grinding, this method production efficiency is high, can focus on the above alloy bar wire rod of 100 ㎏ by manufacture order, be suitable for producing in enormous quantities, but facility investment is large, plant factor is very low, the production handiness is bad, causes product cost high.
Another kind method is by open-train mill, produces the approximately following vertical bar rod wire rod of 10 ㎏ of substance, after being cut into the scale of 2-3 rice, heat-treats in batch, then by root, is aligned and the finishing such as grinding is processed.The method production efficiency is lower, but facility investment is few, and the production handiness is strong, is suitable for multiple, small serial production, for most of titanium material manufacturer used.The prior heat treatment equipment of this type of titanium alloy vertical bar rod wire production is chamber type electric resistance furnace, after excellent wire rod in batch experiences thermal treatment in stove, then by root, takes out, and carries out hot straightening.There is following defect problem in this mode of production:
1, thermal treatment is the intermittent type operation, every excellent material wire present position difference in chamber type electric resistance furnace, with batch every excellent wire rod because of the position difference in stove, the heat treated intensification of its experience, process of cooling also are not quite similar, therefore can produce certain microstructure and property difference with batch products, and, along with the diameter of excellent wire rod is less, the microstructure and property difference of the product that the difference of heat treatment process causes is also larger;
2, thermal treatment batch, working method and operating speed random variation, also can affect the heat treated consistence of excellent wire rod and batch stability;
3, the excellent wire rod straightening temperature after thermal treatment is also unsettled, not controlled, and after aligning, excellent wire rod may produce secondary deformation, affects its planeness and following process, reduces lumber recovery.
Summary of the invention
For the thermal treatment and the aligning problem that exist in existing excellent wire rod technology, the purpose of this utility model is that type provides a kind of thermal treatment for excellent wire production process-aligning integrated apparatus, with traditional technology, compare, it is high that this device has production automation degree, the advantages such as the consistence of product tissue, performance and planeness and batch stability are good, be particularly suitable for small dimension, vertical bar type, high performance titanium alloy bar wire rod titanium in, small serial production.
The technical solution of the utility model is:
A kind of thermal treatment for excellent wire production process-aligning integrated apparatus, comprise be linked in sequence, feeding device, heat treatment furnace, refrigerating unit, multi-roll straightener and the finished product collection device of its working face on same level, it is characterized in that:
Described feeding device is arranged on the entrance end of described heat treatment furnace, comprise storage rack, be erected at the storing platform on described storage rack and be erected on described storage rack, lower than many feed rollss of described storing platform; Described feed rolls is perpendicular to the direction of motion setting of described excellent wire rod, and the turning direction of described feed rolls is consistent with the direction of motion of described excellent wire rod; The central point of described feed rolls is a little less than described storing platform; The excellent wire rod be positioned on described storing platform is rolled into the upper of described feed rolls naturally, and the single excellent wire rod that the rotation of feed rolls will be positioned on described feed rolls is sent into heat treatment furnace;
Described heat treatment furnace is the tubular electric resistance heat treatment furnace, and it allows single excellent wire rod by its center, and described excellent wire rod is heated up and the heat preservation hot processing; In the boiler tube of described tubular electric resistance heat treatment furnace, lower both sides have duck eye symmetrically at interval of certain distance, through every pair of duck eye, are separately installed with feed rolls; Described excellent wire rod is positioned on described feed rolls and is positioned at the center of described boiler tube, and the rotation of described feed rolls guides excellent wire rod in described boiler tube to move to the direction of described refrigerating unit;
Described refrigerating unit is arranged on the exit end of described heat treatment furnace, and described refrigerating unit is case structure, on the tank wall of the end near described heat treatment furnace, has the inlet mouth be communicated with inlet pipe; Have the air outlet be communicated with escape pipe on the tank wall of the end away from described heat treatment furnace; Pressurized air enters described refrigerating unit from described inlet pipe, and the excellent wire rod after Overheating Treatment is forced after cooling to discharge from described escape pipe; In described refrigerating unit, perpendicular to the direction of motion of described excellent wire rod, many feed rollss are set; The turning direction of described feed rolls is consistent with the direction of motion of described excellent wire rod; The excellent wire rod that the rotation of described feed rolls will be positioned on described feed rolls is sent into multi-roll straightener;
Described multi-roll straightener is positioned at the exit end of described refrigerating unit, and described excellent wire rod is carried out to precision straightening;
Finished product collection device is positioned at the exit end of described multi-roll straightener, and the feed rolls that connects described multi-roll straightener and described finished product collection device is sent into the excellent wire rod after aligning in the material frame of exit end of finished product collection device; The central authorities of every feed rolls in described feeding device, described heat treatment furnace, described refrigerating unit and described finished product collection device are a sheathed material-feeding rolling wheels respectively, described material-feeding rolling wheels is located along the same line, the outside surface of described material-feeding rolling wheels is inwardly recessed, V-shaped groove, for holding single excellent wire rod.
Further, the technical solution of the utility model can also be:
The maximum width of described V-type groove is 20 ㎜, and full depth is 10 ㎜.
The velocity of rotation of the velocity of rotation of the velocity of rotation of the feed rolls of described feeding device, the feed rolls of described heat treatment furnace and feed rolls in described refrigerating unit is identical; The aligning speed of described multi-roll straightener equals or is slightly larger than the velocity of rotation of the feed rolls of described feeding device; The transmission speed of the feed rolls of described finished product collection device equals or is slightly larger than the aligning speed of described multi-roll straightener.
Described tubular electric resistance heat treatment furnace is multi-section combined tubular oven; Every section tubular oven is grown 5～6 meters; Described heat treatment furnace live roll has 3 at least; The spacing of the feed rolls of adjacent two heat treatment furnaces is less than the length of single excellent wire rod.
The boiler tube of described tubular oven is made with heat resisting pipe; Surround the periphery of described boiler tube, from inside to outside electric furnace insulator layer, heating by electric cooker body layer, electric furnace heat insulating refractory material layer and steel furnace shell be installed successively.
The thermal treatment temperature element stretches in described boiler tube outside described tubular oven, the furnace temperature in the described boiler tube of Real-Time Monitoring.
Cooling temperature element stretches in described case structure outside described refrigerating unit, the temperature in the described refrigerating unit of Real-Time Monitoring.
The utlity model has following advantage:
1. serialization thermal treatment, thermal effectiveness is good.Every excellent wire rod is successively by heat treatment furnace and refrigerating unit, and the intensification of experiencing, insulation and process of cooling are identical, the high conformity of the end of the excellent wire rod after thermal treatment and the microstructure and property of middle portion;
2. intelligent degree is high.Use this device, the processing parameter of thermal treatment and aligning can automatically record, shows, stores and print, and process controllability and trackability are good, the technique favorable reproducibility of each batch of product, product batches good stability.
3. equipment whole-course automation operation, work condition environment is good, and labor condition is good, and employment is few, and whole device only needs 1-2 people's operation.Very little in batches, in the situation of the reinforced frequency low (as being less than 20/minutes), can adopt hand-fed; When the reinforced frequency is larger, should be reinforced with machine.
4. technological flexibility is good.Can regulate flexibly production efficiency by the translational speed of control rod wire rod, adapt to the needs of different batch productions.
5. leveling effect is good.Can pass through the speed of cooling of control rod wire rod, make each root rod wire rod temperature correction in best temperature range, after aligning, can not produce large unrelieved stress and resilience, make to align excellent wire rod and keep very high planeness, reduce the stock removal of excellent wire rod, improve lumber recovery.
The accompanying drawing explanation
The structural representation that Fig. 1 is a kind of thermal treatment for excellent wire production process of the present utility model-aligning integrated apparatus.
The B that Fig. 2 is the feeding device in Fig. 1 is to structural representation.
The A that Fig. 3 is the heat treatment furnace in Fig. 1 is to structural representation.
The B that Fig. 4 is the heat treatment furnace in Fig. 1 is to structural representation.
The B that Fig. 5 is single feed rolls in Fig. 1 is to structural representation.
Description of reference numerals
1, feeding device 2, heat treatment furnace 3, refrigerating unit 4, multi-roll straightener 5, finished product collection device 6, rod wire rod 7, storage rack 8, storing platform 9, feed rolls 10, feed transmission shaft 11, material-feeding rolling wheels 12, power wheel 13, support 14, boiler tube 15, inlet pipe 16, escape pipe 17, cooling temperature element 18, material frame 19, electric furnace insulator layer 20, heating by electric cooker body layer 21, electric furnace heat insulating refractory material layer 22, steel furnace shell 23, the thermal treatment temperature element
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Of the present utility model a kind of thermal treatment for excellent wire production process as Figure 1-5-aligning integrated apparatus, can realize continuous heat treatment and aligning for vertical bar rod wire rod, comprise be linked in sequence, feeding device 1, heat treatment furnace 2, refrigerating unit 3, multi-roll straightener 4 and the finished product collection device 5 of its working face on same level, excellent wire rod 6 is successively by feeding device, heat treatment furnace, refrigerating unit, multi-roll straightener and finished product collection device.The working face of feeding device 1, heat treatment furnace 2, refrigerating unit 3, multi-roll straightener 4 and finished product collection device, on same level, can guarantee that excellent wire rod moves in the same horizontal line, to guarantee that excellent wire rod is unobstructed, advances.。
Wherein, feeding device is arranged on the entrance end of heat treatment furnace, comprise storage rack 7, be erected at the storing platform 8 of the both sides band plate washer on storage rack and be erected on storage rack, lower than storing platform, the many feed rollss 9 that arrange at interval of certain distance; Feed rolls comprises transmission shaft 10, be positioned in the middle of transmission shaft and its appearance is worn the material-feeding rolling wheels 11 of " V " type groove and is arranged on the power wheel 12 of transmission shaft one end.The present invention's heat treatment furnace 2 hereinafter, the feed roller structure in refrigerating unit 3 and finished product collection device 5 is identical with the feed roller structure of feeding device 1, repeats no more.
In this example, the storing platform is about 3m, and wide about 1m can store the titanium alloy bar wire rod of some amount.Feed rolls is perpendicular to the direction of motion setting of excellent wire rod, and at least 3, the turning direction of feed rolls is consistent with the direction of motion of excellent wire rod; The central point of feed rolls is a little less than the storing platform, and the excellent wire rod be positioned at like this on the storing platform is slipped on material-feeding rolling wheels, and the rotation of material-feeding rolling wheels is sent the single excellent wire rod be located thereon into heat treatment furnace.
Heat treatment furnace is the tubular electric resistance heat treatment furnace, is erected on furnace body support 13, and it allows single excellent wire rod by its center, and excellent wire rod is heated up and the heat preservation hot processing; In the boiler tube 14 of tubular electric resistance heat treatment furnace, lower both sides have duck eye at interval of the certain distance symmetry, through every pair of duck eye, are separately installed with feed rolls; The rod wire rod is positioned on feed rolls and is positioned at the center of boiler tube, and under the drive of the power wheel of the feed rolls of heat treatment furnace, the direction that the excellent wire rod in boiler tube is guided to refrigerating unit moves;
Refrigerating unit is arranged on the exit end of heat treatment furnace, and refrigerating unit is case structure, but the temperature before the speed of cooling of control rod wire rod and aligning; Have the inlet mouth be communicated with inlet pipe 15 on the tank wall of the end near heat treatment furnace; Have the air outlet be communicated with escape pipe 16 on the tank wall of the end away from heat treatment furnace; Pressurized air enters refrigerating unit from inlet pipe, and the excellent wire rod after Overheating Treatment is forced after cooling to discharge from escape pipe; In refrigerating unit, perpendicular to the direction of motion of excellent wire rod, many feed rollss are set; The excellent wire rod that the turning direction of feed rolls and the rotation of the consistent feed rolls of direction of motion of excellent wire rod will be positioned on the material-feeding rolling wheels of feed rolls is sent into multi-roll straightener;
Excellent wire rod after refrigerating unit of the present utility model utilizes pressurized air to thermal treatment is forced cooling, shortens the cooling time of titanium alloy bar line, to guarantee, at optimal temperature, excellent wire rod is carried out to temperature correction.Cooling temperature element 017 self-cooling set is overhanging to be entered in box structure, the temperature in Real-Time Monitoring institute radiator cooler.By regulating the flow of air inlet (pressurized air), but the temperature before the speed of cooling of control rod wire rod and aligning.
Multi-roll straightener is positioned at the exit end of refrigerating unit, and the excellent wire rod passed through is carried out to precision straightening; Be particularly suitable for the titanium rod wire rod of φ 5～20 ㎜ is carried out to precision straightening.
Finished product collection device is positioned at the exit end of multi-roll straightener, and the feed rolls that connects multi-roll straightener and finished product collection device is sent into the excellent wire rod after aligning in the material frame 18 of exit end of finished product collection device.
The structure of the material-feeding rolling wheels in feeding device of the present utility model, heat treatment furnace, refrigerating unit and finished product collection device and consistent size, and all material-feeding rolling wheels are on the same straight line; The outside surface of material-feeding rolling wheels is inwardly recessed, and V-shaped groove, according to the size of the excellent wire rod be transmitted, the maximum width of V-type groove is 20 ㎜, full depth is 10 ㎜, and for holding excellent wire rod, and each V-type groove is at every turn only for the single excellent wire rod that holds φ 5～20 ㎜.
The utility model utilizes roller driving rod wire rod to travel forward, and makes it the heating zone by heat treatment furnace.Roller surface band V-type groove, spillikin (minimum φ 5 ㎜) and big stick-means of intimidation (maximum φ 20 ㎜) can be entered, the heat treatment furnace live roll is arranged in the duck eye of boiler tube lower wall, by buncher, drive power wheel that material-feeding rolling wheels is rotated by required speed, the excellent wire rod driven in the V-type groove travels forward, particularly when excellent wire gage is less and/or the song of rectifying distortion is arranged, the rod wire rod with common roller, may not contact or contact surface very little, make this roller can't drive excellent wire rod and move forward.V-type groove design on the application's roller can increase contact surface and the frictional force of excellent wire rod and roller, strengthens motivating force, prevents that excellent wire rod from skidding on roller surface, stagnation.
Tubular electric resistance heat treatment furnace of the present utility model is multi-section combined tubular oven; Every section tubular oven is grown 5～6 meters; The hop count of tubular oven and total length require to decide according to production efficiency (or annual capacity).Hop count is more, and production efficiency is higher.Every section heat treatment furnace live roll has 3 at least, and the spacing of adjacent two heat treatment furnace live rolls is less than the length of single excellent wire rod, can make excellent wire rod travel longitudinally.
The boiler tube of tubular oven of the present utility model is made with heat resisting pipe; Surround the periphery of boiler tube 14, respectively interior electric furnace isolator 219, heating by electric cooker body layer 20, electric furnace heat insulating refractory material layer 21 and the steel furnace shell 22 of outwards being equipped with successively arranged, can make boiler tube be heated to required thermal treatment (annealing or timeliness) temperature, approximately 550 ℃-850 ℃, thermal treatment temperature element 23 stretches in boiler tube outside tubular oven, the furnace temperature in the Real-Time Monitoring boiler tube.
Feeding device, heat treatment furnace, refrigerating unit, and finished product collection device in the feed rolls transfer rate adjustable.The velocity of rotation of the velocity of rotation of the feed rolls of feeding device of the present utility model, the feed rolls of heat treatment furnace is preferably identical with the feed rolls velocity of rotation in refrigerating unit; The aligning speed of multi-roll straightener equals or is slightly larger than the velocity of rotation of the feed rolls of feeding device; The transmission speed of finished product collection device feed rolls equals or is slightly larger than the aligning speed of multi-roll straightener, to guarantee that excellent wire rod is longitudinally coordinated, unobstructed advancing.
Above-mentionedly only several specific embodiments in the utility model are illustrated; but can not be as protection domain of the present utility model; every equivalence of having done according to the design spirit in the utility model changes or modifies, and all should think and fall into protection domain of the present utility model.
Claims (7)
1. the thermal treatment for excellent wire production process-aligning integrated apparatus, comprise be linked in sequence, feeding device, heat treatment furnace, refrigerating unit, multi-roll straightener and the finished product collection device of its working face on same level, it is characterized in that:
Described feeding device is arranged on the entrance end of described heat treatment furnace, comprise storage rack, be erected at the storing platform on described storage rack and be erected on described storage rack, lower than many feed rollss of described storing platform; Described feed rolls is perpendicular to the direction of motion setting of described excellent wire rod, and the turning direction of described feed rolls is consistent with the direction of motion of described excellent wire rod; The central point of described feed rolls is a little less than described storing platform; The excellent wire rod be positioned on described storing platform is rolled into the upper of described feed rolls naturally, and the single excellent wire rod that the rotation of feed rolls will be positioned on described feed rolls is sent into heat treatment furnace;
Described heat treatment furnace is the tubular electric resistance heat treatment furnace, and it allows single excellent wire rod by its center, and described excellent wire rod is heated up and the heat preservation hot processing; In the boiler tube of described tubular electric resistance heat treatment furnace, lower both sides have duck eye symmetrically at interval of certain distance, through every pair of duck eye, are separately installed with feed rolls; Described excellent wire rod is positioned on described feed rolls and is positioned at the center of described boiler tube, and the rotation of described feed rolls guides excellent wire rod in described boiler tube to move to the direction of described refrigerating unit;
Described refrigerating unit is arranged on the exit end of described heat treatment furnace, and described refrigerating unit is case structure, on the tank wall of the end near described heat treatment furnace, has the inlet mouth be communicated with inlet pipe; Have the air outlet be communicated with escape pipe on the tank wall of the end away from described heat treatment furnace; Pressurized air enters described refrigerating unit from described inlet pipe, and the excellent wire rod after Overheating Treatment is forced after cooling to discharge from described escape pipe; In described refrigerating unit, perpendicular to the direction of motion of described excellent wire rod, many feed rollss are set; The turning direction of described feed rolls is consistent with the direction of motion of described excellent wire rod; The excellent wire rod that the rotation of described feed rolls will be positioned on described feed rolls is sent into multi-roll straightener;
Described multi-roll straightener is positioned at the exit end of described refrigerating unit, and described excellent wire rod is carried out to precision straightening;
Finished product collection device is positioned at the exit end of described multi-roll straightener, and the feed rolls that connects described multi-roll straightener and described finished product collection device is sent into the excellent wire rod after aligning in the material frame of exit end of finished product collection device; The central authorities of every feed rolls in described feeding device, described heat treatment furnace, described refrigerating unit and described finished product collection device are a sheathed material-feeding rolling wheels respectively, described material-feeding rolling wheels is located along the same line, the outside surface of described material-feeding rolling wheels is inwardly recessed, V-shaped groove, for holding single excellent wire rod.
2. the thermal treatment for excellent wire production process according to claim 1-aligning integrated apparatus, it is characterized in that: the maximum width of described V-type groove is 20 ㎜, full depth is 10 ㎜.
3. the thermal treatment for excellent wire production process according to claim 1-aligning integrated apparatus is characterized in that: the velocity of rotation of the velocity of rotation of the velocity of rotation of the feed rolls of described feeding device, the feed rolls of described heat treatment furnace and feed rolls in described refrigerating unit is identical; The aligning speed of described multi-roll straightener equals or is slightly larger than the velocity of rotation of the feed rolls of described feeding device; The transmission speed of the feed rolls of described finished product collection device equals or is slightly larger than the aligning speed of described multi-roll straightener.
4. the thermal treatment for excellent wire production process according to claim 1-aligning integrated apparatus, it is characterized in that: described tubular electric resistance heat treatment furnace is multi-section combined tubular oven; Every section tubular oven is grown 5～6 meters; Described heat treatment furnace live roll has 3 at least; The spacing of the feed rolls of adjacent two heat treatment furnaces is less than the length of single excellent wire rod.
5. the thermal treatment for excellent wire production process according to claim 4-aligning integrated apparatus, it is characterized in that: the boiler tube of described tubular oven is made with heat resisting pipe; Surround the periphery of described boiler tube, from inside to outside electric furnace insulator layer, heating by electric cooker body layer, electric furnace heat insulating refractory material layer and steel furnace shell be installed successively.
6. the thermal treatment for excellent wire production process according to claim 5-aligning integrated apparatus, it is characterized in that: the thermal treatment temperature element stretches in described boiler tube outside described tubular oven, the furnace temperature in the described boiler tube of Real-Time Monitoring.
7. the thermal treatment for excellent wire production process according to claim 6-aligning integrated apparatus, it is characterized in that: cooling temperature element stretches in described case structure outside described refrigerating unit, the temperature in the described refrigerating unit of Real-Time Monitoring.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320218275 CN203346440U (en) | 2013-04-26 | 2013-04-26 | Heat treatment and straightening integrated device used in wire rod production process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320218275 CN203346440U (en) | 2013-04-26 | 2013-04-26 | Heat treatment and straightening integrated device used in wire rod production process |
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| CN203346440U true CN203346440U (en) | 2013-12-18 |
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| CN 201320218275 Expired - Lifetime CN203346440U (en) | 2013-04-26 | 2013-04-26 | Heat treatment and straightening integrated device used in wire rod production process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276177A (en) * | 2013-04-26 | 2013-09-04 | 宝鸡力兴钛业科技有限公司 | Heat treatment-straightening integrated device for rod/wire production, and rod/wire heat treatment-straightening method adopting the heat treatment-straightening integrated device |
| CN106196798A (en) * | 2016-08-31 | 2016-12-07 | 太仓贝斯特机械设备有限公司 | A kind of heat sink and method of work thereof |
-
2013
- 2013-04-26 CN CN 201320218275 patent/CN203346440U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276177A (en) * | 2013-04-26 | 2013-09-04 | 宝鸡力兴钛业科技有限公司 | Heat treatment-straightening integrated device for rod/wire production, and rod/wire heat treatment-straightening method adopting the heat treatment-straightening integrated device |
| CN106196798A (en) * | 2016-08-31 | 2016-12-07 | 太仓贝斯特机械设备有限公司 | A kind of heat sink and method of work thereof |
| CN106196798B (en) * | 2016-08-31 | 2018-10-26 | 太仓贝斯特机械设备有限公司 | A kind of heat sink and its working method |
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