CN102554090A - Forging method for forming through holes of working clamping plates by hot extrusion - Google Patents

Forging method for forming through holes of working clamping plates by hot extrusion Download PDF

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Publication number
CN102554090A
CN102554090A CN2012100358582A CN201210035858A CN102554090A CN 102554090 A CN102554090 A CN 102554090A CN 2012100358582 A CN2012100358582 A CN 2012100358582A CN 201210035858 A CN201210035858 A CN 201210035858A CN 102554090 A CN102554090 A CN 102554090A
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die
forging
cooling water
punch
workpiece
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CN2012100358582A
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Inventor
黄基平
冯克敏
王涛
张有朋
李世宽
廖茂
董兴明
王斌全
赵继
张宇树
张凯
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SICHUAN XINZHU PRECISE BILLET FORGING CO Ltd
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SICHUAN XINZHU PRECISE BILLET FORGING CO Ltd
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Priority to CN2012100358582A priority Critical patent/CN102554090A/en
Publication of CN102554090A publication Critical patent/CN102554090A/en
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Abstract

The invention discloses a forging method for forming through holes of working clamping plates by hot extrusion, which includes steps of blanking, deburring, heating, preforging, forming, reshaping, cooling, shot blasting and the like. A male die is matched and centered with a male die bush and then is inserted into a female die to complete piercing and reshaping of a workpiece, the combining height of the male die and the female die is fixed after being regulated so as to prevent the workpiece from being eccentric and guarantee that the reshaped part meets the processing requirements, the male die and the male die bush are separated to complete stripping after the male die drives the reshaped workpiece to raise to the set position, then the workpiece can be stripped, the dies can be cooled by an automatic cooling system, and parts of the dies can be changed quickly. Compared with the prior art, the process of machining the through holes of the working clamping plates of anchors by means of die forging has the advantage that use of raw materials is saved according to the relation between the volume of the through holes of the working clamping plates and the total volume of the working clamping plates, machining procedures are simplified and cost can be saved by 20% around.

Description

The forging method of work clip sheet hot extrusion through hole
Technical field
The present invention relates to a kind of forging method, specifically be meant the forging method of work clip sheet hot extrusion through hole.
Background technology
Along with the development of prestressed anchor technology, intermediate plate anchor proportion in the prestressed anchor engineering is increasing, and consumption sharply increases, and the time anchor clipper most important in the intermediate plate anchor, that consumption is maximum.Anchor clipper is used for clamping presstressed reinforcing steel when the deformed bar of anchor prestressed concrete member, and he is widely used in the construction such as different types of rridges road skyscraper.At present each prestressing force manufacturer to produce the traditional handicraft of anchor clipper be to adopt round bar, carry out face work, turning hole, boring, finish turning endoporus then, process hole taper, attack internal thread, the car external taper, dissect, operations such as heat treatment and sandblast.Blasting treatment process after the heat treatment is little to the impact and the shear action power of surface of the work, causes inefficiency, and the workpiece surface quality after the processing is relatively poor.
Summary of the invention
The object of the present invention is to provide the forging method and the shaping dies of work clip sheet hot extrusion through hole, reach and reduce raw-material consumption, reduce machining processes, the purpose that reduces cost.
The object of the invention is realized through following technical proposals:
The forging method of work clip sheet hot extrusion through hole may further comprise the steps:
(A) blanking: utilize the sawing machine blanking;
(B) deburring: utilize the blank deburring of grinder, burr, greasy dirt, rust staining and dirt on the blank are removed, after the blank clean, according to different heat (batch) numbers separately with blank to step (A);
(C) heating: the clean blank of step (B) is placed the heating of heating in medium frequency stove, and heating-up temperature is 1100 ± 20 ℃;
(D) blocking: use 100 tons of punch presses, the heated work pieces of step (C) is carried out the forward extrusion closed-die forging;
(E) be shaped: use 100 tons of punch presses, the forging that step (D) is obtained carries out the backward extrusion closed-die forging:
(F) shaping: use 100 tons of punch presses, the forging that step (E) is obtained carries out the forward extrusion closed-die forging;
(G) cooling: the forging that step (F) is obtained hooks cooling in heap in the hopper with forging after being positioned over and being cooled to 600 ℃ in the lubricating substance groove;
(H) ball blast: the workpiece oxide skin that step (G) obtains is removed fully with shot-blasting machine.
Because intermediate plate is state's tender, therefore, the size of blank adopts φ 25 * 33.5 better, after blank is removed burr, greasy dirt through polishing; Heat, improve its wrought performance, when heating-up temperature is 1100 ± 20 ℃, begin to get into forging process; The connector that uses punch press at first to become cylinder to combine its blocking with round platform, its diameter is φ 27.5, cylinder length 3cm, the length of round platform is 35cm; Its drift angle is about 14 °, adopts backward extrusion closed-die forging method to be carried out to swaged forging at the shaping mould intra-office immediately behind the blocking and makes, on the axis of workpiece behind the blocking, go out the cylindrical shrinkage pool of an indent, and whole workpiece is the connector that cylinder combines with round platform; Its diameter is φ 29.4~30, and entire length is 46.5 ± 0.5cm, and the shrinkage pool diameter is φ 12.8; The cross section of this shrinkage pool receives the influence of mould, on the basis of standard cylinder, slightly is round platform, then in shaping mould; The shrinkage pool extruding is connected the formation through hole, form the standard intermediate plate at last, diameter is φ 28.89~30.39; Entire length is 44.57 ± 0.5cm, and the shrinkage pool diameter is φ 13.6~13.85, and outer shape is unified.With respect to present technology, the mode that adopts mould to forge is processed into the through hole of ground tackle work clip sheet, has replaced present bore process; Practiced thrift raw-material use amount; Relation according to the cumulative volume of the volume of work clip sheet through hole and work clip sheet can be learnt, compares present technology, the consumption that can save material; Reduce machining processes, reach about 20% the purpose of reducing cost.
Say that further said step (D) need be accomplished, and specifically may further comprise the steps in 5S:
(D1) mould is correctly installed, whether inspection punch, die align, whether shut height is correct, and punch case is finely tuned according to product height after getting into die 20mm;
(D2) open recirculated cooling water, cooling water can be got in the die for the flow according to mold temperature adjusting die recirculated cooling water, and the flow that cooling water gets into die is 1~5ml/s;
(D3) start, first dry running twice, whether the inspection punch press is normal;
(D4) blank after will heating is correctly put into die with clamp, forges, and when slide block is got back to after top dead center, takes out forging.
Becoming standard component need be divided into repeatedly columniform blank forging forges; Adopt repeatedly forging molding can reduce the interference of material internal stress; The purpose of blocking is that columniform blank is at first formed through extruding; Blank flows out the direction of motion partly pressing method identical with the punch direction of motion from nib crowded for just, and in the opposite direction is anti-squeezing, and metal flow is limited by impression fully.Adopt three molds to be respectively blocking mould, mould, shaping mould processing work successively, promptly can form the general shape of workpiece after columniform blank forges through three times,, can form standard component through after the follow-up processing.
Say that further said step (E) need be accomplished, and specifically may further comprise the steps in 5S:
(E1) mould is correctly installed, whether inspection punch, die align, whether shut height is correct, and punch case is finely tuned according to product height after getting into die 14.5mm;
(E2) open recirculated cooling water, regulate the die circulating cooling water flow according to mold temperature, cooling water can be got in the die, the flow that cooling water gets into die is 1~5ml/s;
(E3) start, first dry running twice, whether the inspection punch press is normal;
(E4) blocking is good workpiece is correctly put into die with clamp, forges, and when slide block is got back to after top dead center, takes out forging.
Say that further said step (F) need be accomplished, and specifically may further comprise the steps in 5S:
(F1) mould is correctly installed, whether inspection punch, die align, whether shut height is correct, and punch case is finely tuned according to product height after getting into die 16.5mm;
(F2) open recirculated cooling water, cooling water can be got in the die for the flow according to mold temperature adjusting die recirculated cooling water, and the flow that cooling water gets into die is 1~5ml/s;
(F3) start, first dry running twice, whether the inspection punch press is normal;
The workpiece that (F4) will be shaped is correctly put into die with clamp, forges, and when slide block is got back to after top dead center, takes out forging.
The present invention compared with prior art has following advantage and beneficial effect:
The forging method of 1 work clip sheet hot extrusion through hole of the present invention, with respect to present technology, the mode that adopts mould to forge is processed into the through hole of ground tackle work clip sheet; Replaced present bore process, practiced thrift raw-material use amount, can learn according to the relation of the cumulative volume of the volume of work clip sheet through hole and work clip sheet; Compare present technology; The consumption that can save material reduces machining processes, reaches about 20% the purpose of reducing cost;
The forging method of 2 work clip sheet hot extrusion through holes of the present invention, whole forging process is accomplished in three molds, has reduced and has improved working (machining) efficiency when forging difficulty;
The mould that the forging method of 3 work clip sheet hot extrusion through holes of the present invention uses gets into die through punch and is shaped after punch case cooperates centering earlier, prevent that product is eccentric; Forming height, discharging height, ejection height can fix after adjustment; The back workpiece height that guarantee to be shaped reaches technological requirement, and the back punch band that is shaped workpiece and risen, and punch separates the discharging completion with punch case behind the desired location; System ejects workpiece by liftout; Take out workpiece, through automatic cooling system mould is cooled off simultaneously, mould parts is realized changing fast; Mould structure is novel, it is simple to make, cooling automatically, lubricated, discharging, die change time≤10min, reaches 10000/ the service life of punch.
Description of drawings
Fig. 1 is a blocking mould structure sketch map of the present invention:
Fig. 2 is a blocking mould processed workpiece structural representation of the present invention;
Fig. 3 is a forming die structure sketch map of the present invention;
Fig. 4 is a mould processed workpiece structural representation of the present invention;
Fig. 5 is a shaping mould structural representation of the present invention;
Fig. 6 is a shaping mould processed workpiece structural representation of the present invention;
Fig. 7 is a finished product Workpiece structure sketch map of the present invention.
Mark in the accompanying drawing adopts three bit digital to indicate, and wherein first is 1,2 or 3, and it represents blocking mould, mould, shaping mould respectively, and mark and corresponding parts title are following:
The 101-die shank, 103-water pipe head, 105-punch, 106-die; 107-die circle stress, 108-die locking nut, 109-die holder, 114-cope match-plate pattern; 115-punch locking nut, 116-upper ejector pin, 117-die supporter, 120-lower push rod; The 122-lower bolster, 124-pull bar, 125-footstock, 126-arm-tie; The 201-die shank, 203-water pipe head, 205-punch, 206-die, 207-die circle stress; 208-die locking nut, 209-die holder, 214-cope match-plate pattern, 215-punch locking nut, 216-punch case; The 217-upper ejector pin, 218-die supporter, 221-lower push rod, 223-lower bolster, 225-pull bar; The 226-footstock, 227-arm-tie, 228-stripper, 229-discharge arm, 230-spring; The 301-die shank, 303-water pipe head, 305-punch, 306-die, 307-die circle stress; 308-die locking nut, 309-die holder, 313-cope match-plate pattern, 314-punch locking nut, 315-punch case; The 317-pad of boring a hole, 321-lower bolster, 323-discharge arm, 324-spring, 325-stripper.
The specific embodiment
Below in conjunction with embodiment the present invention is done further detailed description, but embodiment of the present invention is not limited thereto.
Embodiment
The forging method of work clip sheet hot extrusion through hole may further comprise the steps:
(A) blanking: utilize the sawing machine blanking, blank is of a size of φ 25 * 33.5;
(B) deburring: utilize the blank deburring of grinder, burr, greasy dirt, rust staining and dirt on the blank are removed, after the blank clean, according to different heat (batch) numbers separately with blank to step (A);
(C) heating: the clean blank of step (B) is placed the heating of heating in medium frequency stove, and heating-up temperature is 1100 ± 20 ℃;
(D) blocking: use 100 tons of punch presses, in 5S, accomplish following steps:
(D1) mould is correctly installed, whether inspection punch, die align, whether shut height is correct, and punch case is finely tuned according to product height after getting into die 20mm;
(D2) open recirculated cooling water, cooling water can be got in the die for the flow according to mold temperature adjusting die recirculated cooling water, and the flow that cooling water gets into die is 1~5ml/s;
(D3) start, first dry running twice, whether the inspection punch press is normal;
(D4) blank after will heating is correctly put into die with clamp, forges, and when slide block is got back to after top dead center, takes out forging, is transferred to shaping dies;
As shown in Figure 1, the blocking mould comprises cope match-plate pattern 114, lower bolster 122 and arm-tie 126, and cope match-plate pattern 114, lower bolster 122 and arm-tie 126 connect through two pull bars that are parallel to each other 124; Die shank 101 is installed on cope match-plate pattern 114, punch 105 is installed on die shank 101, punch 105 is fixedly connected on the die shank 101 through punch locking nut 115; Punch locking nut 115 is provided with water pipe head 103, and die holder 109 is installed on lower bolster 122, in die holder 109, is set with die supporter 117; Die circle stress 107 is installed on die supporter 117; In die circle stress 107, be set with die 106, die 106 and die circle stress 107 are connected through taper fit, and die circle stress 107 is fixedly connected on the die holder 109 through die locking nut 108; Die 106 is positioned under the punch 105; Die supporter 117 be provided with die 116 coaxial be communicated with chamber, at the indoor upper ejector pin 116 that is placed with of this connected chamber, lower bolster 122 is provided with the through hole coaxial with die 106; Footstock 125 is installed in through hole, in footstock 125, is set with lower push rod 120.
(E) be shaped: use 100 tons of punch presses, in 5S, accomplish the forging that step (D4) is obtained and carry out following steps:
(E1) mould is correctly installed, whether inspection punch, die align, whether shut height is correct, and punch case is finely tuned according to product height after getting into die 14.5mm;
(E2) open recirculated cooling water, regulate the die circulating cooling water flow according to mold temperature, cooling water can be got in the die, the flow that cooling water gets into die is 1~5ml/s;
(E3) start, first dry running twice, whether the inspection punch press is normal;
(E4) blocking is good workpiece is correctly put into die with clamp, forges, and when slide block is got back to after top dead center, takes out forging, is transferred to shaping mould;
As shown in Figure 3; Mould comprises cope match-plate pattern 214, lower bolster 223 and arm-tie 227; Cope match-plate pattern 214, lower bolster 223 and arm-tie 227 connect through two pull bars that are parallel to each other 225, and die shank 201 is installed on cope match-plate pattern 214, and punch 216 is installed on die shank 201; Punch 216 is fixedly connected on the die shank 201 through punch locking nut 215, and punch locking nut 215 is provided with water pipe head 203; Two discharge arms 229 are installed on lower bolster 223; Stripper 228 is installed on discharge arm 229, on the discharge arm 229 between stripper 228 and the lower bolster 223, is set with the spring 230 that is in compressive state, punch case 216 is installed on stripper 228; Die holder 209 also is installed on lower bolster 223; In die holder 209, be set with die supporter 218, die circle stress 207 is installed on die supporter 218, in die circle stress 207, be set with die 206; Die 206 and die circle stress 207 are connected through taper fit, and die circle stress 207 is fixedly connected on the die holder 209 through die locking nut 208; Die supporter 218 be provided with die 206 coaxial be communicated with chamber; At the indoor upper ejector pin 217 that is placed with of this connected chamber; Lower bolster 223 is provided with the through hole coaxial with die 206, and footstock 226 is installed in through hole, in footstock 226, is set with lower push rod 221.
(F) shaping: use 100 tons of punch presses, the forging that step (E) is obtained carries out the forward extrusion closed-die forging; Said step (F) need be accomplished in 5S, specifically may further comprise the steps:
(F1) mould is correctly installed, whether inspection punch, die align, whether shut height is correct, and punch case is finely tuned according to product height after getting into die 16.5mm;
(F2) open recirculated cooling water, cooling water can be got in the die for the flow according to mold temperature adjusting die recirculated cooling water, and the flow that cooling water gets into die is 1~5ml/s;
(F3) start, first dry running twice, whether the inspection punch press is normal;
The workpiece that (F4) will be shaped is correctly put into die with clamp, forges, and when slide block is got back to after top dead center, takes out forging;
As shown in Figure 5; Shaping mould comprises the cope match-plate pattern 313 that is connected on the punch press and is positioned at the lower bolster 321 under the cope match-plate pattern 313; Die shank 301 is installed on cope match-plate pattern 313; Punch 305 is installed on die shank 301, and punch 305 is fixedly connected on the die shank 301 through punch locking nut 315, and punch locking nut 315 is provided with water pipe head 303; Two discharge arms 323 are installed on lower bolster 321, stripper 325 is installed on discharge arm 323, on the discharge arm 323 between stripper 325 and the lower bolster 321, be set with the spring 324 that is in compressive state, punch case 315 is installed on stripper 325; Die holder 309 is installed on lower bolster 321; Die holder 309 is positioned under the punch 305; In die holder 309, be set with die circle stress 307, in die circle stress 307, be set with die 306, die 306 and die circle stress 307 are connected through taper fit; Die circle stress 307 is fixedly connected on the die holder 309 through die locking nut 308; The inner upper surfaces of die holder 309 are recessed to form annular groove downwards, in groove, being placed with perforation pad 317, are being provided with the through hole that is positioned under the punch 305 on base plate 321, die holder 309 and the perforation pad 317.
(G) cooling: the forging that step (F4) is obtained hooks cooling in heap in the hopper with forging after being positioned over and being cooled to 600 ℃ in the lubricating substance groove;
(H) ball blast: the workpiece oxide skin that step (G) obtains is removed fully with shot-blasting machine.
In the above technology, step (D), (E), (F) processed workpiece structure respectively like Fig. 2,4, shown in 6, Fig. 7 is a finished product Workpiece structure sketch map.Check according to blank drawing that at last through statistics, this technology reaches more than 98% in the product percent of pass of experimental stage, is higher than the qualification rate of present machinofacture far away.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction, to any simple modification, equivalent variations that above embodiment did, all falls within protection scope of the present invention on every foundation technical spirit of the present invention.

Claims (4)

1. the forging method of work clip sheet hot extrusion through hole is characterized in that, may further comprise the steps:
(A) blanking: utilize the sawing machine blanking;
(B) deburring: utilize the blank deburring of grinder, burr, greasy dirt, rust staining and dirt on the blank are removed, after the blank clean, according to different heat (batch) numbers separately with blank to step (A);
(C) heating: the clean blank of step (B) is placed the heating of heating in medium frequency stove, and heating-up temperature is 1100 ± 20 ℃;
(D) blocking: use 100 tons of punch presses, the heated work pieces of step (C) is carried out the forward extrusion closed-die forging;
(E) be shaped: use 100 tons of punch presses, the forging that step (D) is obtained carries out the backward extrusion closed-die forging:
(F) shaping: use 100 tons of punch presses, the forging that step (E) is obtained carries out the forward extrusion closed-die forging;
(G) cooling: the forging that step (F) is obtained hooks cooling in heap in the hopper with forging after being positioned over and being cooled to 600 ℃ in the lubricating substance groove;
(H) ball blast: the workpiece oxide skin that step (G) obtains is removed fully with shot-blasting machine.
2. the forging method of work clip sheet hot extrusion through hole according to claim 1 is characterized in that, said step (D) need be accomplished in 5S, specifically may further comprise the steps:
(D1) mould is correctly installed, whether inspection punch, die align, whether shut height is correct, and punch case is finely tuned according to product height after getting into die 20mm,
(D2) open recirculated cooling water, cooling water can be got in the die for the flow according to mold temperature adjusting die recirculated cooling water, and the flow that cooling water gets into die is 1~5ml/s;
(D3) start, first dry running twice, whether the inspection punch press is normal;
(D4) blank after will heating is correctly put into die with clamp, forges, and when slide block is got back to after top dead center, takes out forging.
3. the forging method of work clip sheet hot extrusion through hole according to claim 1 is characterized in that, said step (E) need be accomplished in 5S, specifically may further comprise the steps:
(E1) mould is correctly installed, whether inspection punch, die align, whether shut height is correct, and punch case is finely tuned according to product height after getting into die 14.5mm;
(E2) open recirculated cooling water, regulate the die circulating cooling water flow according to mold temperature, cooling water can be got in the die, the flow that cooling water gets into die is 1~5ml/s;
(E3) start, first dry running twice, whether the inspection punch press is normal;
(E4) blocking is good workpiece is correctly put into die with clamp, forges, and when slide block is got back to after top dead center, takes out forging.
4. the forging method of work clip sheet hot extrusion through hole according to claim 1 is characterized in that, said step (F) need be accomplished in 5S, specifically may further comprise the steps:
(F1) mould is correctly installed, whether inspection punch, die align, whether shut height is correct, and punch case is finely tuned according to product height after getting into die 16.5mm;
(F2) open recirculated cooling water, cooling water can be got in the die for the flow according to mold temperature adjusting die recirculated cooling water, and the flow that cooling water gets into die is 1~5ml/s;
(F3) start, first dry running twice, whether the inspection punch press is normal;
The workpiece that (F4) will be shaped is correctly put into die with clamp, forges, and when slide block is got back to after top dead center, takes out forging.
CN2012100358582A 2012-02-17 2012-02-17 Forging method for forming through holes of working clamping plates by hot extrusion Pending CN102554090A (en)

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CN103071857A (en) * 2012-12-28 2013-05-01 杭州浙锚预应力有限公司 Slicing machine for clamping pieces
CN104259364A (en) * 2014-09-16 2015-01-07 浙江德清龙立红旗制药机械有限公司 Metal material heading device
CN104492949A (en) * 2014-12-01 2015-04-08 柳州市桥厦工程管材有限公司 One-time punch forming device for pre-stressed clamping piece
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CN104858254A (en) * 2014-02-24 2015-08-26 苏州昆仑重型装备制造有限公司 35CrMo steel thick-walled tube vertical backward extrusion method, and extrusion die thereof
CN105081167A (en) * 2014-05-13 2015-11-25 陕西宏远航空锻造有限责任公司 Through hole forging forming method
CN105478508A (en) * 2014-09-19 2016-04-13 苏州昆仑重型装备制造有限公司 Inverted extrusion molding process of high pressure cylinder and inverted extrusion die adopted in inverted extrusion molding process
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CN103071857A (en) * 2012-12-28 2013-05-01 杭州浙锚预应力有限公司 Slicing machine for clamping pieces
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CN104841792A (en) * 2014-02-17 2015-08-19 苏州昆仑重型装备制造有限公司 Molding process of reverse cylinder workpiece having flange at end
CN104858254A (en) * 2014-02-24 2015-08-26 苏州昆仑重型装备制造有限公司 35CrMo steel thick-walled tube vertical backward extrusion method, and extrusion die thereof
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CN105081167A (en) * 2014-05-13 2015-11-25 陕西宏远航空锻造有限责任公司 Through hole forging forming method
CN104259364A (en) * 2014-09-16 2015-01-07 浙江德清龙立红旗制药机械有限公司 Metal material heading device
CN105478508A (en) * 2014-09-19 2016-04-13 苏州昆仑重型装备制造有限公司 Inverted extrusion molding process of high pressure cylinder and inverted extrusion die adopted in inverted extrusion molding process
CN104492949A (en) * 2014-12-01 2015-04-08 柳州市桥厦工程管材有限公司 One-time punch forming device for pre-stressed clamping piece
CN107848015A (en) * 2015-07-15 2018-03-27 Ntn株式会社 The forging method of the shaft component of constant-speed universal coupling
CN106914529A (en) * 2017-04-12 2017-07-04 苏州汇程精密模具有限公司 A kind of cambered surface is integrally formed die cutting die
CN107470535A (en) * 2017-10-12 2017-12-15 西南铝业(集团)有限责任公司 A kind of anti-eccentric swaging tools
CN109365709A (en) * 2018-12-03 2019-02-22 刘婧 A kind of crawler belt guide forging mold
CN112548017A (en) * 2020-12-10 2021-03-26 江苏保捷锻压有限公司 High-precision forging die suitable for deep hole machining
CN112570623A (en) * 2020-12-10 2021-03-30 江苏保捷锻压有限公司 Efficient high-precision forging die for inner straight hole ring piece
CN113210553A (en) * 2021-06-02 2021-08-06 中冶建工集团有限公司 Prestressed porous anchorage machining equipment and technology
CN113617994A (en) * 2021-08-20 2021-11-09 中机(济南)精密成形工程技术有限公司 Hot extrusion forming process and die for long-neck shaft tube
CN114505427A (en) * 2022-03-03 2022-05-17 哈尔滨工业大学 Thermal mechanical densification device for brittle high-entropy alloy hot-pressing sintering body and using method thereof
CN114505427B (en) * 2022-03-03 2024-05-24 哈尔滨工业大学 Thermomechanical densification device for brittle high-entropy alloy hot-pressed sintering body and use method thereof

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