CN106540976A - A kind of shaped device and its moulding process of the long tubing of hydrostatic extrusion magnesium alloy - Google Patents
A kind of shaped device and its moulding process of the long tubing of hydrostatic extrusion magnesium alloy Download PDFInfo
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- CN106540976A CN106540976A CN201510605637.8A CN201510605637A CN106540976A CN 106540976 A CN106540976 A CN 106540976A CN 201510605637 A CN201510605637 A CN 201510605637A CN 106540976 A CN106540976 A CN 106540976A
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- magnesium alloy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/007—Hydrostatic extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/085—Making tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/211—Press driving devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/217—Tube extrusion presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
Abstract
The invention discloses the shaped device and its moulding process of a kind of long tubing of hydrostatic extrusion magnesium alloy, shaped device includes the first fixed mount, the second fixed mount, support tube, mould, recipient, pressure matchmaker's swapdisk, the high-pressure hydraulic pump with extrusion axis and pecker.The support tube, mould, recipient, pressure matchmaker's swapdisk and pecker are placed in the first fixed mount, and the high-pressure hydraulic pump with extrusion axis is placed in the second fixed mount.Present invention eliminates mold insert structure, employ retinue perforation needle construction, it is to avoid the destabilization problems of long core rod, the longer magnesium alloy pipe of length can be obtained, production efficiency is improve, simple structure, part are few, so that low cost, reliability are high.
Description
Technical field
The invention belongs to technical field of metal formation, and in particular to a kind of shaped device and its moulding process of the long tubing of hydrostatic extrusion magnesium alloy.
Background technology
The conventional processing method of magnesium alloy has casting, rolls, and extrudes, punching press, forge hot etc..Although casting is the main manufacturing process of current magnesium alloy, magnesium alloy cast part performance is low, and defect is more, far can not meet requirement of the national defense and military fields to magnesium alloy parts.The mechanical properties such as intensity, ductility through the magnesium-alloy material of extruding are all significantly improved.During conventional mechanical presses, can occur to rub with recipient after blank upsetting, the magnesium alloy article surfaces for obtaining are second-rate.
Chinese Patent Application No. is CN201310108301.1 patent applications, discloses a kind of mould with core rod, can carry out the expanding extruding of magnesium alloy pipe and shrink extruding.But as a result of mold insert structure, the stability of core rod can be significantly reduced with the increase of length, it is difficult to obtain long tubing.
The content of the invention
It is an object of the invention to provide the shaped device and its moulding process of a kind of long tubing of hydrostatic extrusion magnesium alloy, solve the problems, such as that magnesium alloy materials are difficult to plastic forming hydrostatic extrusion molding magnesium alloy pipe length shorter.
The technical solution for realizing the object of the invention is：A kind of shaped device of the long tubing of hydrostatic extrusion magnesium alloy, including the first fixed mount, the second fixed mount, support tube, mould, recipient, pressure matchmaker's swapdisk, the high-pressure hydraulic pump with extrusion axis and pecker；Support tube, mould, recipient, pressure matchmaker's swapdisk and pecker are placed in the first fixed mount, and the high-pressure hydraulic pump with extrusion axis is placed in the second fixed mount.
First fixed mount includes that walking beam, the first fixed beam and N root Zhang Lizhu, N >=4, walking beam and the first fixed beam are respectively fixedly connected with N root Zhang Lizhu two ends, collectively forms frame structure；The center of walking beam is provided with first through hole, and support tube one end is fixed on walking beam center, and the other end is connected with mould, and the other end of mould is provided with magnesium alloy blank to be processed, and is stretched in recipient, and pecker is fixed in magnesium alloy blank；The recipient other end is connected with pressure matchmaker swapdisk, and pressure matchmaker's swapdisk is fixed on the first fixed beam center；Pressure matchmaker exchanges disk center and is provided with the second through hole, and the first fixed beam center is provided with and the second through-hole diameter identical third through-hole, the second through hole and third through-hole insertion.
Second fixed mount includes that the second fixed beam, the 3rd fixed beam and N root Zhang Lizhu, N >=4, the second fixed beam and the 3rd fixed beam are respectively fixedly connected with N root Zhang Lizhu two ends, collectively forms frame structure；The base of the high-pressure hydraulic pump with extrusion axis is fixed on the center of the 3rd fixed beam, and the one end with extrusion axis is fixed on the second fixed beam center, and extrusion axis passes through the second through hole and third through-hole to stretch in recipient.
Diameter of the support tube internal diameter not less than first through hole.
Pressure matchmaker's swapdisk is provided with a L-shaped through hole so that the inner chamber of recipient is in communication with the outside.
Also include sealing device, the recipient is provided with sealing device with pressure matchmaker's swapdisk junction, and recipient is provided with sealing device with mould junction, and the sealing device is O-ring seal and metal triangular pad, by sealing device, realizes static seal.
Also include sealing ring, press matchmaker's swapdisk and the junction of extrusion axis to be provided with sealing ring, realize dynamic sealing.
The frame structure is quadrilateral frame structure.
A kind of moulding process of the long tubing of hydrostatic extrusion magnesium alloy, step are as follows：
Step 1）, as needed, homogenization heat treatment is carried out to magnesium alloy blank to be processed, the blind hole being engaged with pecker is processed in blank one end.
Step 2）, using hydraulic extrusion press by step 1）Magnesium alloy blank be pressed in mould, both interference fit, the part that mould is coordinated with magnesium alloy blank are tapered, to ensure the first sealing of magnesium alloy blank.
Step 3）, pecker coated after grease, load in the blind hole of magnesium alloy blank.
Step 4）, sealing device is installed at the mould, one end of die assembly magnesium alloy blank and pecker is put in recipient and is docked.
Step 5）, by the mould other end and support tube Butt Assembling.
Step 6）, walking beam passed through into Zhang Lizhu, adjust the depth of parallelism of walking beam and the first fixed beam, support tube fixed.
Step 7）, using the low pressure hot oil pump of external hydraulic system by high temperature extrusion medium, fill recipient.
Step 8）, start high-pressure hydraulic pump, extrusion axis is entered in the recipient full of high temperature extrusion medium under the promotion of high-pressure hydraulic pump, produces pressure field of the pressure more than 500MPa, and magnesium alloy blank is extruded between mould and pecker, obtains shaping pipe.
Compared with prior art, its remarkable advantage is the present invention：（1）The supertension hydrostatic extrusion molding of achievable magnesium alloy pipe；（2）The longer magnesium alloy pipe of plastic length；（3）Blank is once extruded together under high pressure effect in a mold, reaches high accuracy, without the need for polish again, product near-net-shape；（4）Easy to operate, production process is controllable, and danger coefficient is low, and the device parts are few, and reliability is high.
Description of the drawings
Fig. 1 is the general structure schematic diagram of the shaped device of the long tubing of hydrostatic extrusion magnesium alloy of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail.
With reference to Fig. 1, a kind of shaped device of the long tubing of hydrostatic extrusion magnesium alloy, using four beams, four post horizontal type structure, including the first fixed mount, the second fixed mount, support tube 3, mould 4, recipient 5, the pressure matchmaker's swapdisk 8, high-pressure hydraulic pump 11 with extrusion axis 7 and pecker 16.
Support tube 3, mould 4, recipient 5, pressure matchmaker swapdisk 8 and pecker 16 are placed in the first fixed mount, and the high-pressure hydraulic pump 11 with extrusion axis 7 is placed in the second fixed mount.
First fixed mount includes walking beam 1, the first fixed beam 9 and N roots Zhang Lizhu 2, N >=4, walking beam 1 and the first fixed beam 9 are respectively fixedly connected with 2 two ends of N roots Zhang Lizhu, frame structure is collectively formed, the center of walking beam 1 is provided with first through hole, and 3 one end of support tube is fixed on 1 center of walking beam, the other end is connected with mould 4, the other end of mould 4 is provided with magnesium alloy blank 17 to be processed, and is stretched in recipient 5, and pecker 16 is fixed in magnesium alloy blank 17.5 other end of recipient is connected with pressure matchmaker swapdisk 8, and pressure matchmaker swapdisk 8 is fixed on 9 center of the first fixed beam.8 center of pressure matchmaker swapdisk is provided with the second through hole, and 9 center of the first fixed beam is provided with and the second through-hole diameter identical third through-hole, the second through hole and third through-hole insertion.
Second fixed mount includes that the second fixed beam 10, the 3rd fixed beam 12 and N roots Zhang Lizhu 2, N >=4, the second fixed beam 10 and the 3rd fixed beam 12 are respectively fixedly connected with 2 two ends of N roots Zhang Lizhu, collectively forms frame structure.The base of the high-pressure hydraulic pump 11 with extrusion axis 7 is fixed on the center of the 3rd fixed beam 12, and the one end with extrusion axis 7 is fixed on 10 center of the second fixed beam, and extrusion axis 7 passes through the second through hole and third through-hole to stretch in recipient 5.
Diameter of 3 internal diameter of support tube not less than first through hole.
The frame structure is quadrilateral frame structure.
Pressure matchmaker swapdisk 8 is provided with a L-shaped through hole so that the inner chamber of recipient 5 is in communication with the outside, and by the L-shaped through hole, the low pressure fuel pump of external hydraulic system is injected into the extrusion medium 6 with certain pressure and temperature in recipient 5.
Recipient 5 is provided with sealing device 18 with 8 junction of pressure matchmaker swapdisk, and recipient 5 is provided with sealing device 18 with 4 junction of mould, and the sealing device 18 is O-ring seal and metal triangular pad, by sealing device 18, realizes static seal.Pressure matchmaker swapdisk 8 is provided with sealing ring 14 with the junction of extrusion axis 7, realizes dynamic sealing.
A kind of moulding process of the long tubing of hydrostatic extrusion magnesium alloy, step are as follows：
Step 1）, as needed, homogenization heat treatment is carried out to magnesium alloy blank to be processed, the blind hole being engaged with pecker is processed in blank one end.
Step 2）, using hydraulic extrusion press by step 1）Magnesium alloy blank be pressed in mould, both interference fit, the part that mould is coordinated with magnesium alloy blank are tapered, to ensure the first sealing of magnesium alloy blank.
Step 3）, pecker coated after grease, load in the blind hole of magnesium alloy blank.
Step 4）, sealing device is installed at the mould, one end of die assembly magnesium alloy blank and pecker is put in recipient and is docked.
Step 5）, by the mould other end and support tube Butt Assembling.
Step 6）, walking beam passed through into Zhang Lizhu, adjust the depth of parallelism of walking beam and the first fixed beam, support tube fixed.
Step 7）, using the low pressure hot oil pump of external hydraulic system by high temperature extrusion medium, fill recipient.
Step 8）, start high-pressure hydraulic pump, extrusion axis is entered in the recipient full of high temperature extrusion medium under the promotion of high-pressure hydraulic pump, produces pressure field of the pressure more than 500MPa, and magnesium alloy blank is extruded between mould and pecker, obtains shaping pipe.
Embodiment 1
With reference to Fig. 1, a kind of shaped device of the long tubing of hydrostatic extrusion magnesium alloy, using four beams, four post horizontal type structure, including the first fixed mount, the second fixed mount, support tube 3, mould 4, recipient 5, the pressure matchmaker's swapdisk 8, high-pressure hydraulic pump 11 with extrusion axis 7 and pecker 16.
Support tube 3, mould 4, recipient 5, pressure matchmaker swapdisk 8 and pecker 16 are placed in the first fixed mount, and the high-pressure hydraulic pump 11 with extrusion axis 7 is placed in the second fixed mount.
First fixed mount includes walking beam 1, the first fixed beam 9 and four Zhang Lizhu 2, walking beam 1 and the first fixed beam 9 are respectively fixedly connected with four 2 two ends of Zhang Lizhu, rectangular frame structure is collectively formed, wherein walking beam 1 is walking beam, is easy to the fixation and installation of mould 4 and recipient 5 in molding process.The center of walking beam 1 is provided with first through hole, it is easy to shaping pipe to extend there through, 3 one end of support tube is fixed on 1 center of walking beam, the other end is connected with mould 4, the other end of mould 4 is provided with magnesium alloy blank 17 to be processed, and stretched in recipient 5, pecker 16 is fixed in magnesium alloy blank 17.5 other end of recipient is connected with pressure matchmaker swapdisk 8, and pressure matchmaker swapdisk 8 is fixed on 9 center of the first fixed beam.8 center of pressure matchmaker swapdisk is provided with the second through hole, and 9 center of the first fixed beam is provided with and the second through-hole diameter identical third through-hole, the second through hole and third through-hole insertion.Four Zhang Lizhu 2 are respectively arranged at two ends with nut 13, support tube 3, mould 4, recipient 5 and pressure matchmaker swapdisk 8 are fixed between walking beam 1, the first fixed beam 9 by nut 13.
Second fixed mount includes that the second fixed beam 10, the 3rd fixed beam 12 and four Zhang Lizhu 2, the second fixed beam 10 and the 3rd fixed beam 12 are respectively fixedly connected with four 2 two ends of Zhang Lizhu, collectively forms rectangular frame structure.The base of the high-pressure hydraulic pump 11 with extrusion axis 7 is fixed on the center of the 3rd fixed beam 12, and the one end with extrusion axis 7 is fixed on 10 center of the second fixed beam, and extrusion axis 7 passes through the second through hole and third through-hole to stretch in recipient 5.Four Zhang Lizhu 2 are respectively arranged at two ends with nut 13, high-pressure hydraulic pump 11 are fixed between the second fixed beam 10 and the 3rd fixed beam 12 by nut 13.
Diameter of 3 internal diameter of support tube not less than first through hole.
Pressure matchmaker swapdisk 8 is provided with a L-shaped through hole so that the inner chamber of recipient 5 is in communication with the outside, and by the L-shaped through hole, the low pressure fuel pump of external hydraulic system is injected into the extrusion medium 6 with certain pressure and temperature in recipient 5.
Recipient 5 is provided with sealing device 18 with 8 junction of pressure matchmaker swapdisk, and recipient 5 is provided with sealing device 18 with 4 junction of mould, and the sealing device 18 is O-ring seal and metal triangular pad, by sealing device 18, realizes static seal.Pressure matchmaker swapdisk 8 is provided with sealing ring 14 with the junction of extrusion axis 7, realizes dynamic sealing.
A kind of moulding process of the long tubing of hydrostatic extrusion magnesium alloy, step are as follows：1. as needed, homogenization heat treatment is carried out to magnesium alloy blank 17 to be processed, the blind hole being engaged with pecker 16 is processed in blank one end；2. the magnesium alloy blank 17 using hydraulic extrusion press by step 1. is pressed in mould 4, both interference fit, and the part that mould 4 is coordinated with magnesium alloy blank 17 is tapered, to ensure the first sealing of magnesium alloy blank 17；3. pecker 16 is coated after grease, is loaded in the blind hole of magnesium alloy blank 17；4. sealing device 18 is installed at mould 4, one end that mould 4 assembles magnesium alloy blank 17 and pecker 16 is put in into docking in recipient 5；5. by 4 other end of mould and 3 Butt Assembling of support tube；6. walking beam 1 is passed through into Zhang Lizhu 2, adjusts the depth of parallelism of walking beam 1 and the first fixed beam 9, support tube 3 is fixed using locknut 13；7. using the low pressure of external hydraulic system（Less than 70 MPa）High temperature extrusion medium 6 is filled recipient 5 by hot oil pump；8. start high-pressure hydraulic pump 11, extrusion axis 7 is entered in the recipient 5 full of high temperature extrusion medium 6 under the promotion of high-pressure hydraulic pump 11, pressure field of the pressure more than 500MPa is produced, magnesium alloy blank 17 is extruded between mould 4 and pecker 16, obtains shaping pipe.
If it is intended to obtaining the tubing of different wall ratio, the physical dimension of pecker 16, magnesium alloy blank 17 and mould 4, repeat the above steps need to be only adjusted.
As the shaped device of the long tubing of hydrostatic extrusion magnesium alloy of the present invention eliminates mold insert structure, retinue perforation needle construction is employed, it is to avoid the destabilization problems of long core rod, the magnesium alloy pipe longer such that it is able to obtain length.The structure of apparatus of the present invention is simpler, part is less, so that cost is lower, reliability is higher.
Claims (7)
1. the shaped device of the long tubing of a kind of hydrostatic extrusion magnesium alloy, it is characterised in that：Including the first fixed mount, the second fixed mount, support tube（3）, mould（4）, recipient（5）, pressure matchmaker's swapdisk（8）, with extrusion axis（7）High-pressure hydraulic pump（11）And pecker（16）；Support tube（3）, mould（4）, recipient（5）, pressure matchmaker's swapdisk（8）And pecker（16）It is placed in the first fixed mount, with extrusion axis（7）High-pressure hydraulic pump（11）It is placed in the second fixed mount；
First fixed mount includes walking beam（1）, the first fixed beam（9）With N root Zhang Lizhu（2）, N >=4, walking beam（1）With the first fixed beam（9）It is respectively fixedly connected with N root Zhang Lizhu（2）Two ends, collectively form frame structure；Walking beam（1）Center be provided with first through hole, support tube（3）One end is fixed on walking beam（1）Center, the other end and mould（4）It is connected, mould（4）The other end be provided with magnesium alloy blank to be processed（17）, and stretched into recipient（5）It is interior, pecker（16）It is fixed on magnesium alloy blank（17）On；Recipient（5）The other end and pressure matchmaker's swapdisk（8）It is connected, presses matchmaker's swapdisk（8）It is fixed on the first fixed beam（9）Center；Pressure matchmaker's swapdisk（8）Center is provided with the second through hole, the first fixed beam（9）Center is provided with and the second through-hole diameter identical third through-hole, the second through hole and third through-hole insertion；
Second fixed mount includes the second fixed beam（10）, the 3rd fixed beam（12）With N root Zhang Lizhu（2）, N >=4, the second fixed beam（10）With the 3rd fixed beam（12）It is respectively fixedly connected with N root Zhang Lizhu（2）Two ends, collectively form frame structure；With extrusion axis（7）High-pressure hydraulic pump（11）Base be fixed on the 3rd fixed beam（12）Center, with extrusion axis（7）One end be fixed on the second fixed beam（10）Center, extrusion axis（7）Recipient is stretched into through the second through hole and third through-hole（5）It is interior.
2. the shaped device of the long tubing of hydrostatic extrusion magnesium alloy according to claim 1, it is characterised in that：The support tube（3）Diameter of the internal diameter not less than first through hole.
3. the shaped device of the long tubing of hydrostatic extrusion magnesium alloy according to claim 1, it is characterised in that：Pressure matchmaker's swapdisk（8）It is provided with a L-shaped through hole so that recipient（5）Inner chamber be in communication with the outside.
4. the shaped device of the long tubing of hydrostatic extrusion magnesium alloy according to claim 1, it is characterised in that：Also include sealing device（18）, the recipient（5）With pressure matchmaker's swapdisk（8）Junction is provided with sealing device（18）, recipient（5）With mould（4）Junction is provided with sealing device（18）, the sealing device（18）For O-ring seal and metal triangular pad, by sealing device（18）, realize static seal.
5. the shaped device of the long tubing of hydrostatic extrusion magnesium alloy according to claim 1, it is characterised in that：Also include sealing ring（14）, press matchmaker's swapdisk（8）With extrusion axis（7）Junction be provided with sealing ring（14）, realize dynamic sealing.
6. the shaped device of the long tubing of hydrostatic extrusion magnesium alloy according to claim 1, it is characterised in that：The frame structure is quadrilateral frame structure.
7. based on the long tubing of hydrostatic extrusion magnesium alloy described in claim 1 shaped device moulding process, it is characterised in that step is as follows：
Step 1）, as needed, to magnesium alloy blank to be processed（17）Homogenization heat treatment is carried out, is processed and pecker in blank one end（16）The blind hole being engaged；
Step 2）, using hydraulic extrusion press by step 1）Magnesium alloy blank（17）It is pressed into mould（4）In, both interference fit, mould（4）With magnesium alloy blank（17）The part of cooperation is tapered, to ensure magnesium alloy blank（17）First sealing；
Step 3）, by pecker（16）After coating grease, load magnesium alloy blank（17）Blind hole in；
Step 4）, in mould（4）Place is installed by sealing device（18）, by mould（4）Assembling magnesium alloy blank（17）And pecker（16）One end put in recipient（5）Middle docking；
Step 5）, by mould（4）The other end and support tube（3）Butt Assembling；
Step 6）, by walking beam（1）Through Zhang Lizhu（2）, adjust walking beam（1）With the first fixed beam（9）The depth of parallelism, by support tube（3）It is fixed；
Step 7）, using the low pressure hot oil pump of external hydraulic system by high temperature extrusion medium（6）, fill recipient（5）；
Step 8）, start high-pressure hydraulic pump（11）, extrusion axis（7）In high-pressure hydraulic pump（11）Promotion under enter full of high temperature extrusion medium（6）Recipient（5）In, produce pressure field of the pressure more than 500MPa, magnesium alloy blank（17）In mould（4）And pecker（16）Between be extruded, obtain shaping pipe.
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| CN201510605637.8A CN106540976A (en) | 2015-09-22 | 2015-09-22 | A kind of shaped device and its moulding process of the long tubing of hydrostatic extrusion magnesium alloy |
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| CN201510605637.8A CN106540976A (en) | 2015-09-22 | 2015-09-22 | A kind of shaped device and its moulding process of the long tubing of hydrostatic extrusion magnesium alloy |
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| CN106984660A (en) * | 2017-04-28 | 2017-07-28 | 陈仕聪 | Torque arm forming machine and utilization torque arm shaping machining torque arm method |
| CN109332412A (en) * | 2018-11-21 | 2019-02-15 | 中国重型机械研究院股份公司 | A kind of filling liquid structure of the super super-pressure of metal hydrostatic extruder |
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| CN109622660A (en) * | 2018-12-24 | 2019-04-16 | 有研工程技术研究院有限公司 | A kind of preparation method of magnesium alloy precision tube |
| CN109759467A (en) * | 2019-03-11 | 2019-05-17 | 合肥工业大学 | A kind of horizontal automatic guide mechanism of blank for corner-type hydrostatic extrusion device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109759467A (en) * | 2019-03-11 | 2019-05-17 | 合肥工业大学 | A kind of horizontal automatic guide mechanism of blank for corner-type hydrostatic extrusion device |
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Application publication date: 20170329 |