CN202278027U - Stop block with cooling structure and extrusion manufacturing system comprising same - Google Patents
Stop block with cooling structure and extrusion manufacturing system comprising same Download PDFInfo
- Publication number
- CN202278027U CN202278027U CN2011203330185U CN201120333018U CN202278027U CN 202278027 U CN202278027 U CN 202278027U CN 2011203330185 U CN2011203330185 U CN 2011203330185U CN 201120333018 U CN201120333018 U CN 201120333018U CN 202278027 U CN202278027 U CN 202278027U
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- Prior art keywords
- cooling
- blocking block
- material blocking
- tube
- extrusion
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- Extrusion Of Metal (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a stop block with a cooling structure. The stop block is arranged on a frame; the upper surface of the stop block is contacted with an extruding metal charge; the bottom of the stop block is embedded in the frame; the stop block further comprises a cooling tube that passes through the frame and is connected with the stop block; and a cooling hole in butt joint with the cooling tube is formed on the stop block. The utility model further discloses an extrusion manufacturing system comprising the stop block with the cooling structure. The temperature of the stop block can be controlled within a reasonable range so as to facilitate prolonging the service lives of the stop block and an extrusion die and other components and improving the quality of an extrusion workpiece; and through the change of the cooling tube and the speed regulation of an extrusion power mechanism, the extrusion manufacturing system becomes much more flexible, and manufacturers can clearly know the production conditions of extrusion equipment according to a temperature control device, such as abnormal increase of the temperature due to the abnormal abrasion of the extrusion die or an extrusion wheel, and can find the abnormal conditions in time and take corresponding measures.
Description
Technical field
The utility model relates to the material blocking block structure in a kind of metal extrusion process process; And by its extruding manufacturing system that constitutes; More particularly be meant a kind of material blocking block of taking air-cooled by force (air cooling) or liquid cooling (cooling off) through liquid medium; And having the extruding manufacturing system of this material blocking block, this extruding manufacturing system can further have additional attemperating unit and arrangements for speed regulation, makes it to have function of temperature control and speed-regulating function.
Background technology
At present,, a kind of extrusion equipment is arranged, adopt the mode of extruding by force, metal material is carried out extrusion modling, to reach the purpose of specific moulding, particularly a kind of equipment that materials such as copper is carried out the crystallite extrusion molding in the metal forming processing technique field.Yet in extrusion process, be extruded material and can produce great amount of heat, thereby cause temperature too high, further reduce the intensity and the service life of parts such as hot-extrusion mold, material extrusion die cavity.The extrusion equipment of prior art normally adopts self body heat conduction of mould and mould support unit to dispel the heat; This radiating rate is uncontrollable; And radiating rate is slow; When extrusion process parameters changes, change, after extrusion speed adjusted, utilize the structure that mould and mould support unit etc. dispel the heat just can't adapt to this variation such as the size of extrusion die.Thereby extrusion equipment of the prior art is because the uncontrollable factor of heat radiation is not suitable for the extrusion molding production of many diversification of varieties.
Based on the deficiency of above-mentioned prior art, the inventor designs a kind of material blocking block with cooling structure with innovating and reaches by its extruding manufacturing system that constitutes.
The utility model content
The purpose of the utility model is to overcome the defective of prior art, and a kind of material blocking block with cooling structure is provided, and it is a kind of material blocking block of taking air-cooled by force (air cooling) or liquid cooling (cooling off through liquid medium).
The further purpose of the utility model is to provide a kind of extruding manufacturing system that is made up of the material blocking block with cooling structure; This extruding manufacturing system can further have additional attemperating unit and arrangements for speed regulation; Make it to have function of temperature control and speed-regulating function, speed governing comprises the adjusting of extrusion speed and the adjusting of radiating rate.
For realizing above-mentioned purpose, the utility model adopts following technical scheme:
Material blocking block with cooling structure; Described material blocking block is located on the support; The upper surface of said material blocking block contacts with the extrusion metal material; The bottom of said material blocking block is embedded in the support, it is characterized in that also comprising the cooling tube that passes support and connect with material blocking block, and described material blocking block is provided with the cooling holes of docking with cooling tube.
Its further technical scheme is: described cooling holes is the liquid cools hole, and described cooling tube comprises and the feed tube and the drain pipe of cooling holes sealed attachment that described feed tube, drain pipe all connect with heat exchanger.
Its further technical scheme is: also comprise the concentric tube fitting that is used to connect feed tube, drain pipe and cooling holes; Described concentric tube fitting comprises interior pipe portion, outer tube part and is used to connect the coupling ring of interior pipe portion and outer tube part; Described outer tube part is provided with and stretches in the cooling holes and the closed tube of close-coupled with it, described in pipe portion be provided with the interior tube body that extends to the closed tube bottom and be provided with some flowing holes; Outer ring cavity that said outer tube part and interior pipe portion constitute and the liquid outlet UNICOM that is provided with, described in pipe portion center cavity that constitutes and the inlet UNICOM that is provided with, described liquid outlet connects with drain pipe, described inlet connects with feed tube.
Its further technical scheme is: described cooling holes is the gas cooled hole; Said cooling tube centering is located in the cooling holes, and its end stretches to the bottom of cooling holes and leaves the air-flow space, and the aperture of said cooling holes is greater than the caliber 2～3mm of cooling tube, and the outer end of said cooling tube connects with compressed air source.
The extruding manufacturing system that constitutes by material blocking block with cooling structure; Its characteristic comprises support, is located at squeegee roller and compact wheel on the support; Also be provided with the material extrusion die cavity on the described support; And be located at material extrusion die cavity base material blocking block, be located at the extrusion die of material extrusion die cavity discharge end, described material blocking block is the material blocking block with cooling structure.
Its further technical scheme is: be provided with the semi arch groove around the described squeegee roller.
Its further technical scheme is: described support is provided with the die cavity seat that is used to support extrusion die and material blocking block, and described die cavity seat is provided with aforesaid material extrusion die cavity.
Its further technical scheme is: also comprise attemperating unit and cooling line arrangements for speed regulation; Described attemperating unit comprise the temperature sensor be located in the material blocking block, with the temperature controller that temperature sensor electrically connects, described temperature controller is provided with the control output end that electrically connects with the cooling line arrangements for speed regulation; Described cooling line arrangements for speed regulation are gas piping cooling arrangements for speed regulation or liquid line arrangements for speed regulation, and described gas piping cooling arrangements for speed regulation comprise electric-controlled type compressed air require control valve and/or electric-controlled type compressed air pressure control valve; Described liquid line arrangements for speed regulation are electric-controlled type liquid flow control valve and/or electric-controlled type fluid pressure control valve.
Its further technical scheme is: also comprise attemperating unit and heat exchanger temperature controller; Described attemperating unit comprise the temperature sensor be located in the material blocking block, with the temperature controller that temperature sensor electrically connects, described temperature controller is provided with the control output end that electrically connects with the heat exchanger temperature controller.
Its further technical scheme is: also comprise attemperating unit, with the extruding actuating unit of squeegee roller driving coupling and the power arrangements for speed regulation that electrically connect with the extruding actuating unit; Described attemperating unit comprise the temperature sensor be located in the material blocking block, with the temperature controller that temperature sensor electrically connects, described temperature controller is provided with the control output end that electrically connects with the power arrangements for speed regulation.
The utility model beneficial effect compared with prior art is: the utility model adopts the cooling line of gas or liquid to topmost heater in the extrusion equipment---material blocking block carries out the heat radiation of controllable type; Can make the temperature of material blocking block be controlled at reasonable range; Help providing the service life of parts such as material blocking block and extrusion die, and improve the quality of extruding workpiece; Through the change of cooling line and the speed governing of extruding actuating unit; Can make the extruding manufacturing system be fit to the extrusion production of different tube diameters, unlike material, different extrusion speeds; Improve the flexibility of ground extruding manufacturing system greatly; Manufacturing enterprise can be well understood to the condition of production of extrusion equipment according to attemperating unit very much, causes temperature anomaly to raise such as the inordinate wear of extrusion die or squeegee roller, can find in time and take appropriate measures.In a word, the utility model can obtain good economic benefit and social benefit, is worthy of popularization.
Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.
Description of drawings
Fig. 1 is the structural representation of the specific embodiment one (gas piping cooling) that the utlity model has the material blocking block of cooling structure;
Figure 1A is the cooling tube of Fig. 1 and the enlarged drawing of peripheral part thereof;
Fig. 2 is the structural representation of the specific embodiment two (liquid line cooling) that the utlity model has the material blocking block of cooling structure;
Fig. 2 A is the concentric tube fitting of Fig. 2 and the enlarged drawing (having increased the heat exchanger part) of peripheral part thereof;
The control block diagram of the specific embodiment one of the extruding manufacturing system that Fig. 3 is made up of the material blocking block with cooling structure for the utility model;
The control block diagram of the specific embodiment two of the extruding manufacturing system that Fig. 4 is made up of the material blocking block with cooling structure for the utility model;
The control block diagram of the specific embodiment three of the extruding manufacturing system that Fig. 5 is made up of the material blocking block with cooling structure for the utility model.
Description of reference numerals
1 material blocking block, 11 cooling holes
2 supports, 20 material extrusion die cavitys
21 die cavity seats, 22 squeegee rollers
220 semi arch grooves, 23 compact wheels
24 extrusion dies, 3 cooling tubes
3A feed tube 3B drain pipe
Pipe portion in the 4 concentric tube fittings 41
411 flowing holes, 42 outer tube part
43 coupling rings, 44 liquid outlets
45 inlets, 5 heat exchanger temperature controllers
6 control devices, 61 temperature sensors
62 temperature controllers, 7 cooling line arrangements for speed regulation
8 extruding actuating units, 81 power arrangements for speed regulation
A bar S heat exchanger
The S1 fan
The specific embodiment
In order more to make much of the technology contents of the utility model, below in conjunction with specific embodiment the technical scheme of the utility model is further introduced and explanation, but be not limited to this.
Fig. 1 and Figure 1A are depicted as the material blocking block of the cooling structure that adopts gas piping; The utlity model has the material blocking block 1 of cooling structure; Material blocking block 1 is located on the die cavity seat 21 of support 2, and the upper surface of material blocking block 1 contacts with extrusion metal material (both bar A), and the bottom of material blocking block 1 is embedded in the die cavity seat 21 of support 2; Also comprise the cooling tube 3 that passes support 2 and connect with material blocking block 1, material blocking block 1 is provided with the cooling holes 11 that is used to insert cooling tube 3.Cooling holes 11 is the gas cooled hole; Cooling tube 3 centerings are located in the cooling holes 11; Its end stretches to the bottom of cooling holes 11 and leaves air-flow space (employing inclined-plane, the bottom kerf of cooling tube 3; To leave the air-flow space), the aperture of cooling holes is greater than caliber 2～3mm (about 10mm in cooling holes aperture in the present embodiment, of cooling tube; The cooling tube caliber is about 5～6mm), and the outer end of cooling tube 3 connects with compressed air source.Normally connect with the compressed air line of factory, during the extrusion equipment operation, inner cold air (temperature is a normal temperature), the about 0.3MPa of the gas pressure of feeding of feeding of tracheae; Cold air gets into the inside of material blocking block fast under the effect of pressure, and flows out through the outer wall of cooling tube; The heat of material blocking block is brought out,, play an air-cooled by force effect material blocking block; Make the temperature of extrusion equipment be effectively controlled, in the scope that temperature allows, its extruding rotating speed can be able to accelerate.
Fig. 2 and Fig. 2 A are depicted as the material blocking block of the cooling structure that adopts liquid line; The difference is that: cooling holes 11 is liquid cools hole (it and closed tube close-coupled); Cooling tube comprises feed tube 3A and the drain pipe 3B with cooling holes 11 sealed attachment; Feed tube 3A, drain pipe 3B all connect (heat exchanger is provided with cooling module, such as fan etc.) with heat exchanger S.Also comprise the concentric tube fitting 4 that is used to connect feed tube 3A, drain pipe 3B and cooling holes 11; Concentric tube fitting 4 comprises interior pipe portion 41, outer tube part 42 and is used to connect the coupling ring 43 of interior pipe portion 41 and outer tube part 42; Outer tube part 42 is provided with and stretches in the cooling holes 11 and the closed tube of close-coupled with it, and interior pipe portion 41 is provided with the interior tube body that extends to the closed tube bottom and be provided with some flowing holes 411; Outer tube part 42 and 41 outer ring cavity that constitutes and liquid outlet 44 UNICOMs that are provided with of interior pipe portion, 41 center cavity that constitutes and inlet 45 UNICOMs that are provided with of interior pipe portion, liquid outlet 44 connects with drain pipe 3B, and inlet 45 connects with feed tube 3A.The resistant to elevated temperatures liquid of in liquid line, can packing into is such as transformer oil, resistant to elevated temperatures lubricant or the like.In the present embodiment, two of interior pipe portion 41, outer tube part 42 is equipped with coupling ring 43 (realizing sealed being fixedly connected through welding), and outer ring cavity and center cavity communicate through flowing hole 411.
The extruding manufacturing system that the utility model is made up of the material blocking block with cooling structure; Comprise support 2, be located at squeegee roller 22 and compact wheel 23 on the support 2; Also be provided with material extrusion die cavity 20 on the support 2; And be located at material extrusion die cavity 20 bases material blocking block 1, be located at the extrusion die 24 of material extrusion die cavity 20 discharge ends, material blocking block 1 is for having the material blocking block of cooling structure.Be provided with semi arch groove 220 around the squeegee roller 22; The bar A that is extruded is squeezed to material extrusion die cavity 20 between squeegee roller 22 and compact wheel 23; Backstop action at material blocking block 1; Bar A is extruded the back and extrudes from the position of extrusion die 24, and the crystal grain of bar is changed, and the crystal structure of bar is attenuated diminish.Since the material extrusion die cavity for a long time be extruded material and contact; Be easy to wearing and tearing; So support 2 is provided with the die cavity seat 21 that is used to support extrusion die 24 and material blocking block 1; The center of die cavity seat 21 is provided with the aforementioned material extrusion die cavity 20 that is used for extrusion molding, and (volume size of material extrusion die cavity 20 is relevant with the diameter of the metal charge that is extruded, and the metal bar diameter that is extruded is big more, and the volume of material extrusion die cavity 20 is big more.Because extrusion die is a vulnerable part, therefore, die cavity seat 21 is normally changed with extrusion die 24.
Shown in Figure 3 is the first kind of control mode of extruding manufacturing system with material blocking block formation of cooling structure; Comprise attemperating unit 6 and cooling line arrangements for speed regulation 7; Attemperating unit 6 comprise the temperature sensor 61 be located in the material blocking block 1, with the temperature controllers 62 that temperature sensor 61 electrically connects, temperature controller 62 is provided with and the cooling line arrangements for speed regulation 7 electrical control output ends that connect; Cooling line arrangements for speed regulation 7 are gas piping cooling arrangements for speed regulation or liquid line arrangements for speed regulation, and gas piping cooling arrangements for speed regulation comprise electric-controlled type compressed air require control valve and/or electric-controlled type compressed air pressure control valve; The liquid line arrangements for speed regulation are electric-controlled type liquid flow control valve and/or electric-controlled type fluid pressure control valve.
Shown in Figure 4 is the second kind of control mode of extruding manufacturing system with material blocking block formation of cooling structure; Comprise attemperating unit 6 and heat exchanger temperature controller 5; Attemperating unit 6 comprise the temperature sensor 61 be located in the material blocking block 1, with the temperature controllers 62 that temperature sensor 61 electrically connects, temperature controller 62 is provided with and the heat exchanger temperature controller 5 electrical control output ends that connect.
Shown in Figure 5 is the third control mode of extruding manufacturing system with material blocking block formation of cooling structure; Comprise attemperating unit 6, with the extruding actuating unit 8 of squeegee roller 22 driving coupling and the power arrangements for speed regulation 81 that electrically connect with extruding actuating unit 8; Attemperating unit 6 comprise the temperature sensor 61 be located in the material blocking block 1, with the temperature controllers 62 that temperature sensor 61 electrically connects, temperature controller 62 is provided with and the power arrangements for speed regulation 81 electrical control output ends that connect.
The crystallite extrusion production that manufacturing system is used for phosphor-copper will be pushed by our company; When the operating temperature of material blocking block is lower than 510 ℃; Power arrangements for speed regulation 81 are accelerated the rotating speed of squeegee roller automatically; When the operating temperature of material blocking block reached or is higher than 530 ℃, power arrangements for speed regulation 81 reduced the rotating speeds of squeegee rollers automatically, make the operating temperature of material blocking block approach 520 ℃.Like this, both guaranteed that extrusion equipment ran on the state of peak efficiency, also extrusion equipment had been played the effect of automatic protection.
In other embodiment, also can adopt the control that mode that temperature and speed controls is simultaneously pushed manufacturing system.Make manufacturing enterprise regulate extrusion speed, and realize diversified production by row's oneself production.
In sum; The utility model adopts the cooling line of gas or liquid to topmost heater in the extrusion equipment---material blocking block carries out the heat radiation of controllable type; Can make the temperature of material blocking block be controlled at reasonable range; Help providing the service life of parts such as material blocking block and extrusion die, and improve the quality of extruding workpiece; Through the change of cooling line and the speed governing of extruding actuating unit; Can make the extruding manufacturing system be fit to the extrusion production of different tube diameters, unlike material, different extrusion speeds; Improve the flexibility of ground extruding manufacturing system greatly; Manufacturing enterprise can be well understood to the condition of production of extrusion equipment according to attemperating unit very much, causes temperature anomaly to raise such as the inordinate wear of extrusion die or squeegee roller, can find in time and take appropriate measures.In a word, the utility model can obtain good economic benefit and social benefit, is worthy of popularization.
The above only further specifies the technology contents of the utility model with embodiment; So that the reader is more readily understood; But do not represent the embodiment of the utility model to only limit to this, any technology of doing according to the utility model is extended or recreation, all receives the protection of the utility model.The protection domain of the utility model is as the criterion with claims.
Claims (10)
1. the material blocking block that has cooling structure; Described material blocking block is located on the support; The upper surface of said material blocking block contacts with the extrusion metal material; The bottom of said material blocking block is embedded in the support, it is characterized in that also comprising the cooling tube that passes support and connect with material blocking block, and described material blocking block is provided with the cooling holes of docking with cooling tube.
2. the material blocking block with cooling structure according to claim 1; It is characterized in that described cooling holes is the liquid cools hole; Described cooling tube comprises and the feed tube and the drain pipe of cooling holes sealed attachment that described feed tube, drain pipe all connect with heat exchanger.
3. the material blocking block with cooling structure according to claim 2; It is characterized in that also comprising the concentric tube fitting that is used to connect feed tube, drain pipe and cooling holes; Described concentric tube fitting comprises interior pipe portion, outer tube part and is used to connect the coupling ring of interior pipe portion and outer tube part; Described outer tube part is provided with and stretches in the cooling holes and the closed tube of close-coupled with it, described in pipe portion be provided with the interior tube body that extends to the closed tube bottom and be provided with some flowing holes; Outer ring cavity that said outer tube part and interior pipe portion constitute and the liquid outlet UNICOM that is provided with, described in pipe portion center cavity that constitutes and the inlet UNICOM that is provided with, described liquid outlet connects with drain pipe, described inlet connects with feed tube.
4. the material blocking block with cooling structure according to claim 1 is characterized in that described cooling holes is the gas cooled hole; Said cooling tube centering is located in the cooling holes, and its end stretches to the bottom of cooling holes and leaves the air-flow space, and the aperture of said cooling holes is greater than the caliber 2～3mm of cooling tube, and the outer end of said cooling tube connects with compressed air source.
5. the extruding manufacturing system that constitutes by material blocking block with cooling structure; Its characteristic comprises support, is located at squeegee roller and compact wheel on the support; Also be provided with the material extrusion die cavity on the described support; And be located at material extrusion die cavity base material blocking block, be located at the extrusion die of material extrusion die cavity discharge end, described material blocking block is each described material blocking block with cooling structure of claim 1 to 4.
6. the extruding manufacturing system that constitutes by material blocking block according to claim 5 with cooling structure, it is characterized in that described squeegee roller around be provided with the semi arch groove.
7. the extruding manufacturing system that is made up of the material blocking block with cooling structure according to claim 6 is characterized in that described support is provided with the die cavity seat that is used to support extrusion die and material blocking block, and described die cavity seat is provided with aforesaid material extrusion die cavity.
8. the extruding manufacturing system that constitutes by material blocking block according to claim 7 with cooling structure; It is characterized in that also comprising attemperating unit and cooling line arrangements for speed regulation; Described attemperating unit comprise the temperature sensor be located in the material blocking block, with the temperature controller that temperature sensor electrically connects, described temperature controller is provided with the control output end that electrically connects with the cooling line arrangements for speed regulation; Described cooling line arrangements for speed regulation are gas piping cooling arrangements for speed regulation or liquid line arrangements for speed regulation, and described gas piping cooling arrangements for speed regulation comprise electric-controlled type compressed air require control valve and/or electric-controlled type compressed air pressure control valve; Described liquid line arrangements for speed regulation are electric-controlled type liquid flow control valve and/or electric-controlled type fluid pressure control valve.
9. the extruding manufacturing system that constitutes by material blocking block according to claim 7 with cooling structure; It is characterized in that also comprising attemperating unit and heat exchanger temperature controller; Described attemperating unit comprise the temperature sensor be located in the material blocking block, with the temperature controller that temperature sensor electrically connects, described temperature controller is provided with the control output end that electrically connects with the heat exchanger temperature controller.
10. the extruding manufacturing system that constitutes by material blocking block according to claim 7 with cooling structure; It is characterized in that also comprising attemperating unit, with the extruding actuating unit of squeegee roller driving coupling and the power arrangements for speed regulation that electrically connect with the extruding actuating unit; Described attemperating unit comprise the temperature sensor be located in the material blocking block, with the temperature controller that temperature sensor electrically connects, described temperature controller is provided with the control output end that electrically connects with the power arrangements for speed regulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203330185U CN202278027U (en) | 2011-09-06 | 2011-09-06 | Stop block with cooling structure and extrusion manufacturing system comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203330185U CN202278027U (en) | 2011-09-06 | 2011-09-06 | Stop block with cooling structure and extrusion manufacturing system comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202278027U true CN202278027U (en) | 2012-06-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203330185U Expired - Lifetime CN202278027U (en) | 2011-09-06 | 2011-09-06 | Stop block with cooling structure and extrusion manufacturing system comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202278027U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894437A (en) * | 2014-04-17 | 2014-07-02 | 大连康丰科技有限公司 | Spindle system of continuous extruder and continuous coater |
| CN107913913A (en) * | 2017-12-06 | 2018-04-17 | 重庆庆龙新材料科技有限公司 | Strontium aluminium alloy extrudes wire rod machine |
| CN108097732A (en) * | 2018-01-18 | 2018-06-01 | 大连康丰科技有限公司 | A kind of continuous extruder with cooling device outside extruding wheel |
| CN108296297A (en) * | 2018-01-24 | 2018-07-20 | 重庆大学 | A kind of parallel binary channels ECAP-Conform method and devices |
-
2011
- 2011-09-06 CN CN2011203330185U patent/CN202278027U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894437A (en) * | 2014-04-17 | 2014-07-02 | 大连康丰科技有限公司 | Spindle system of continuous extruder and continuous coater |
| CN103894437B (en) * | 2014-04-17 | 2016-01-20 | 大连康丰科技有限公司 | A kind of axis system of continuous extruder |
| CN107913913A (en) * | 2017-12-06 | 2018-04-17 | 重庆庆龙新材料科技有限公司 | Strontium aluminium alloy extrudes wire rod machine |
| CN107913913B (en) * | 2017-12-06 | 2023-09-26 | 重庆庆龙新材料科技有限公司 | Strontium aluminum alloy extrusion wire machine |
| CN108097732A (en) * | 2018-01-18 | 2018-06-01 | 大连康丰科技有限公司 | A kind of continuous extruder with cooling device outside extruding wheel |
| CN108296297A (en) * | 2018-01-24 | 2018-07-20 | 重庆大学 | A kind of parallel binary channels ECAP-Conform method and devices |
| CN108296297B (en) * | 2018-01-24 | 2020-10-27 | 重庆大学 | Parallel dual-channel ECAP-Conform method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhu Wenping Document name: Notification of eligibility |
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| DD01 | Delivery of document by public notice | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120620 |
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| CX01 | Expiry of patent term |