CN106825094A - The thin effective friction and Extrusion device of seamless aluminium tubing of one kind length and extrusion method for producing - Google Patents
The thin effective friction and Extrusion device of seamless aluminium tubing of one kind length and extrusion method for producing Download PDFInfo
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- CN106825094A CN106825094A CN201710197377.4A CN201710197377A CN106825094A CN 106825094 A CN106825094 A CN 106825094A CN 201710197377 A CN201710197377 A CN 201710197377A CN 106825094 A CN106825094 A CN 106825094A
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- perforation
- pecker
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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
- B21C23/20—Making uncoated products by backward extrusion
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides the thin effective friction and Extrusion device of seamless aluminium tubing of one kind length and extrusion method for producing, using the high rigidity large-sized double-shaft double-action reverse pressurizing unit with heavy in section gland, reduce the eccentricity of seamless aluminium tubing production；By the way of the proportional valve control pecker and machinery of high frequency sound determine pin, the fixed pin positioning precision of pecker is improved；Effective friction and Extrusion is realized by the way of recipient active movement, improves the deformation rule of aluminium ingot base；The thin seamless aluminium tubing of small diameter long is produced on large-sized double-shaft double-action reverse extruder using aluminium ingot long and step bottle pin.
Description
Technical field
The invention belongs to field of metallurgical equipment, and in particular to the thin effective friction and Extrusion device of seamless aluminium tubing of one kind length and extruding
Production method, is primarily adapted for use in effective friction and Extrusion production of overlength minor diameter seamless aluminium tubing.
Background technology
Domestic seamless aluminium tubing production at present uses backward double-acting fashion of extrusion, during reverse extrusion, due to receiving
The puzzlement of eccentricity in the limitation of current pressurizing unit and extrusion process, it is impossible to produce the seamless aluminium tubing of overlength minor diameter, i.e.,
The thin seamless aluminium tubing of length.
The content of the invention
The purpose of the present invention is the problem for overcoming existing backward double-acting fashion of extrusion to produce the thin seamless aluminium tubing of length.
Therefore, the invention provides one kind thin effective friction and Extrusion device of seamless aluminium tubing of length, including set successively from left to right
The back rest, pull bar gland and the front-axle beam put, one end of pull bar gland are set on front-axle beam, and other end is set on the back rest, after
Beam fixedly mounts master cylinder, and master cylinder main plunger is built-in with perforation oil cylinder, and perforation cylinder cavity is connected to piston rod of perforating, wears
Hole piston rod is connected to needle stand of perforating, and perforation needle stand is connected to pecker, and perforation needle end part is connected to perforate syringe needle, the perforation
Pin is connected to control valve, and high frequency sound valve is installed with control valve；
Master cylinder main plunger is connected to moving beam, and moving beam is fixedly connected hollow pressure ram, and pecker seating is in hollow
In pressure ram, recipient is provided between the moving beam and front-axle beam, hollow pressure ram penetrates recipient and slided in cylinder,
Recipient is built-in with hollow aluminium ingot, and dummy block is provided between hollow aluminium ingot and hollow pressure ram；
Front-axle beam is connected to mobile formwork in one end relative with the back rest, fixed mold shaft on mobile formwork, mold shaft and hollow aluminium ingot
Between be provided with mould, mould is fixed with mold shaft end contact.
The pecker outer wall upper sleeve through has fairlead.
The perforation syringe needle is step bottle pin.
The pull bar gland has four, and four pull bar glands be arranged in parallel and circumferentially around formation cavity, master cylinder, shifting
Dynamic crossbeam, perforation piston rod, perforation needle stand, pecker, perforation syringe needle, mold shaft are placed in the cavity.
Pull bar is coated with described each pull bar gland, the sectional area of pull bar gland is 1.3 times of pull bar sectional area.
The thin effective friction and Extrusion production method of seamless aluminium tubing of one kind length, comprises the following steps：
Step one, upper ingot
Pressurizing urges moving beam and recipient are moved to front-axle beam direction simultaneously for master cylinder and perforation oil cylinder, until mold shaft penetrate it is crowded
In pressure cylinder, start auxiliary manipulator dummy block, hollow aluminium ingot and mould are sent to extruding center line, make moving beam and it is hollow squeeze
Depression bar lives dummy block, mould and mold shaft end contact to front-axle beam movable top, withdraws auxiliary manipulator, and upper ingot is completed；
Step 2, perforation
The hollow pressure ram of perforation oil cylinder pushing drives recipient to be moved to the back rest, successively by mould, hollow aluminium ingot and extruding cushion cover
Enter and extrude tube inner chamber, perforation oil cylinder drives pecker and perforation needle forward beam to advance, sequentially pass through dummy block, hollow aluminium ingot and
Mould, moving beam and hollow pressure ram carry out jumping-up to front-axle beam movement to hollow aluminium ingot, while it is right to start the control of high frequency sound valve
Pecker is positioned；
Step 3, extruding
Master cylinder promotes hollow pressure ram and recipient to start extruding to front-axle beam movement together, and seamless aluminium tubing is from perforation syringe needle and mould
Extruded between tool, and through the outlet of front-axle beam into rear portion finishing procedure, the thin seamless aluminium tubing extruding production of length is completed.
Beneficial effects of the present invention：The effective friction and Extrusion device of the thin seamless aluminium tubing of this length and extruding that the present invention is provided are given birth to
Product method, the thin seamless aluminium tubing of length that minor diameter is produced using effective friction and Extrusion method on large-tonnage extruder, heavy in section
Gland improve the integral rigidity of extruder, reduce the eccentricity of the thin seamless aluminium tubing production of length；The Proportional Valve-controlled of high frequency sound
Pecker processed and machinery determine the mode of pin, and improve pecker determines pin precision, improves seamless aluminium tubing inner surface quality；Effectively
Friction and Extrusion improves the crimp rule of aluminium ingot base, improves mechanical performance and the texture performance of product.
The present invention is described in further details below with reference to accompanying drawing.
Brief description of the drawings
Fig. 1 is the structural representation for growing the effective friction and Extrusion device of thin seamless aluminium tubing.
Fig. 2 is the schematic diagram for growing the effective friction and Extrusion production process of thin seamless aluminium tubing.
Description of reference numerals：1st, master cylinder；2nd, perforation oil cylinder；3rd, perforation piston rod；4th, the back rest；5th, perforation needle stand；6th, move
Dynamic crossbeam；7th, hollow pressure ram；8th, recipient；9th, pecker；10th, perforation syringe needle；11st, dummy block；12nd, hollow aluminium ingot；13rd, mould
Tool；14th, mold shaft；15th, pull bar gland；16th, mobile formwork；17th, front-axle beam；18th, fairlead；19th, the aluminium ingot in extrusion process；20、
Seamless aluminium tubing.
Specific embodiment
Embodiment 1：
In order to overcome existing backward double-acting fashion of extrusion to produce the problem of the thin seamless aluminium tubing of length, as depicted in figs. 1 and 2,
Present embodiments provide a kind of thin effective friction and Extrusion device of seamless aluminium tubing of length, including the back rest 4, the drawing for setting gradually from left to right
Bar gland 15 and front-axle beam 17, one end of pull bar gland 15 are set on front-axle beam 17, and other end is set on the back rest 4, the back rest 4
Master cylinder 1 is fixedly mounted, the main plunger of master cylinder 1 is built-in with perforation oil cylinder 2, and perforation oil cylinder 2 inner chamber is connected to piston rod of perforating
3, perforation piston rod 3 is connected to needle stand 5 of perforating, and perforation needle stand 5 is connected to pecker 9, and the end of pecker 9 is connected to syringe needle of perforating
10, the pecker 9 is connected to control valve, and high frequency sound valve is installed with control valve；The main plunger of master cylinder 1 is connected to moving beam
6, moving beam 6 is fixedly connected hollow pressure ram 7, and perforation needle stand 5 is placed in hollow pressure ram 7, the moving beam 6 and preceding
Recipient 8 is provided between beam 17, hollow pressure ram 7 penetrates recipient 8 and slided in cylinder, and recipient 8 is built-in with hollow aluminum
Ingot 12, is provided with dummy block 11 between hollow aluminium ingot 12 and hollow pressure ram 7；Front-axle beam 17 is connected in one end relative with the back rest 4
Mobile formwork 16, fixed mold shaft 14 on mobile formwork 16 is provided with mould 13, mould 13 between mold shaft 14 and hollow aluminium ingot 12
Fixed with the end contact of mold shaft 14.
It should be noted that high frequency sound valve is a type of hydraulic valve, the corresponding time of high frequency sound valve is compared with common valve phase
Should faster, the high frequency sound valve is arranged on the control valve block of pecker, forward-reverse and position for control punch pin.Perforation
Oil cylinder 2 is arranged in inside the main plunger of master cylinder 1, and perforation needle stand 5 is fixed on other end connection pecker 9 on perforation piston rod 3, wears
The fixedly connected perforation syringe needle 10 in the end of hole pin 9；Hollow pressure ram 7 is fixed on moving beam 6, and mold shaft 14 is fixed on mobile formwork
On 16, the space between hollow pressure ram 7 and mold shaft 14 is used for entering dummy block 11, hollow aluminium ingot 12 and mould 13.
As shown in Fig. 2 be the thin effective friction and Extrusion production process schematic diagram of seamless aluminium tubing of length, according to shown in Fig. 2 by left-hand
The right side, first arrow refers to the moving direction of hollow pressure ram 7, and second arrow refers to the moving direction of recipient 8, and
It should be strongly noted that several also pains 2 depict two stations in Fig. 2, specific extrusion process is：Perforation needle stand 5 is from hollow
Passed through in the middle of pressure ram 7, the fixedly connected pecker 9 in front end, the fixedly connected perforation syringe needle 10 in its end, fairlead 18 is fixed on to be worn
On hole pin 9, slidably reciprocated in hollow pressure ram 7, the dummy block 11 positioned at the inner chamber of recipient 8 is enclosed within pecker 9；Mould 13
Positioned at the inner chamber other end of recipient 8, mould 13 and the end contact of mold shaft 14 are fixed, and the aluminium ingot 19 in extrusion process is full of inner chamber,
Seamless aluminium tubing 20 is extruded between perforation syringe needle 10 and mould 13.
When the effective friction and Extrusion of the thin seamless aluminium tubing of length is produced, be inserted in for mold shaft 14 to the direction movement of front-axle beam 17 interior by recipient 8
Dummy block 11, hollow aluminium ingot 12 and mould 13 are sent to extruding center line, moving beam 6 and hollow extruding by chamber, auxiliary manipulator
Bar 7 is moved forward and withstands dummy block 11, hollow aluminium ingot 12 and mould 13, and auxiliary manipulator is withdrawn, and upper ingot is completed；
Recipient 8 is moved rearwards by, and mould 13, hollow aluminium ingot 12 and dummy block 11 are inserted in into its inner chamber successively, and perforation oil cylinder 2 drives
Pecker 9 and perforation syringe needle 10 advance, and sequentially pass through dummy block 11, hollow aluminium ingot 12 and mould 13；Moving beam 6 and it is hollow squeeze
Depression bar 7 is moved forward carries out jumping-up to hollow aluminium ingot 12, makes the full inner chamber of its filling and discharges air；Using the proportioning valve of high frequency sound
The mode that control punch pin and machinery determine pin is positioned to pecker 9, and fairlead 18 is used for branch as pecker 9 is mobile together
Support pecker 9；
Pressed on master cylinder 1, hollow pressure ram 7 and recipient 8 move forward start extruding together, and effective friction and Extrusion starts；With
The forward movement of hollow pressure ram 7 and recipient 8, seamless aluminium tubing 20 is extruded between perforation syringe needle 10 and mould 13, and is worn
Cross the outlet of front-axle beam 17 and enter rear portion finishing procedure, so as to realize growing the effective friction and Extrusion production of thin seamless aluminium tubing.
The present embodiment reduces seamless aluminium using the high rigidity large-sized double-shaft double-action reverse pressurizing unit with heavy in section gland
The eccentricity of pipe production；By the way of the proportional valve control pecker and machinery of high frequency sound determine pin, the fixation of pecker is improved
Pin positioning precision；Effective friction and Extrusion is realized by the way of recipient active movement, improves the deformation rule of aluminium ingot base；Using
Aluminium ingot long and step bottle pin produce the thin seamless aluminium tubing of small diameter long on large-sized double-shaft double-action reverse extruder.
Embodiment 2：
On the basis of embodiment 1, the outer wall upper sleeve through of the pecker 9 has fairlead 18, and the perforation syringe needle 10 is step bottle
Pin.Fairlead 18 is fixed on pecker 9, is slidably reciprocated in pressure ram 7, and fairlead 18 is used as pecker 9 is mobile together
To support pecker 9, fairlead 18 to reduce the eccentricity of seamless aluminium tubing production.Step bottle pin is a kind of structure of pecker
Feature, is industry slang, and the purpose for designing step is to realize growing the extruding of thin seamless aluminium tubing.
Embodiment 3：
On the basis of embodiment 1, the pull bar gland 15 has four, four pull bar glands 15 be arranged in parallel and circumferentially around
Cavity is formed, master cylinder 1, moving beam 6, perforation piston rod 3, perforation needle stand 5, pecker 9, perforation syringe needle 10, mold shaft 14 are equal
It is placed in the cavity.Pull bar gland is the basic structural feature of extruding equipment, and pull bar gland is also to form extruder frame structure
Element.
Embodiment 4：
On the basis of embodiment 3, pull bar is coated with described each pull bar gland 15, the sectional area of pull bar gland 15 is to draw
1.3 times of rod area.The appearance and size of extruded product can be directly affected due to the rigidity of the framework of extruder, and the present invention is adopted
With heavy in section gland, the rigidity of extruding machine frame greatly improved, so as to reduce the bias of the thin seamless aluminium tubing production of length
Rate, specific to quantization, by taking 60MN extruders as an example, using the more traditional architectural feature of heavy in section gland, improves rigidity about
23%。
Embodiment 5：
The thin effective friction and Extrusion production method of seamless aluminium tubing of one kind length, comprises the following steps：
Step one, upper ingot
Pressurizing urges moving beam 6 and recipient 8 are moved to the direction of front-axle beam 17 simultaneously for master cylinder 1 and perforation oil cylinder 2, until mold shaft
14 penetrate in recipient 8, start auxiliary manipulator and dummy block 11, hollow aluminium ingot 12 and mould 13 are sent into extruding center line, make
Moving beam 6 and hollow pressure ram 7 withstand dummy block 11, mould 13 and the end contact of mold shaft 14 to the movement of front-axle beam 17, withdraw auxiliary
Manipulator, upper ingot is helped to complete；
Step 2, perforation
Perforation oil cylinder 2 promotes hollow pressure ram 7 to drive recipient 8 to be moved to the back rest 4, successively by mould 13, the and of hollow aluminium ingot 12
Dummy block 11 is inserted in the inner chamber of recipient 8, and perforation oil cylinder 2 drives pecker 9 and perforation syringe needle 10 to advance to front-axle beam 17, sequentially passes through
Dummy block 11, hollow aluminium ingot 12 and mould 13, moving beam 6 and hollow pressure ram 7 move to enter hollow aluminium ingot 12 to front-axle beam 17
Row jumping-up, while start the control of high frequency sound valve being positioned to pecker 9；
Step 3, extruding
Master cylinder 1 promotes hollow pressure ram 7 and recipient 8 to start extruding to the movement of front-axle beam 17 together, and seamless aluminium tubing 20 is from perforation
Extruded between syringe needle 10 and mould 13, and through the outlet of front-axle beam 17 into rear portion finishing procedure, the thin seamless aluminium tubing extruding life of length
Produce and complete.
The effective friction and Extrusion device front-axle beam of the thin seamless aluminium tubing of the length, the back rest and dynamic beam and four groups of heavy in section pull bar glands
Arrangement form, the fixed pin mode that pin is combined is determined using hydraulic control and machinery, and pecker is using step bottle pin；It is heavy in section
Gland improves the integral rigidity of equipment, and fairlead is provided with pecker, reduces the eccentricity of seamless aluminium tubing production；Wear
Hole oil cylinder is arranged on inside master cylinder, and the proportional valve control pecker and machinery during extruding production using high frequency sound determine the side of pin
Formula, improves pecker and determines pin precision, improves seamless aluminium tubing inner surface quality；Realized by the way of recipient active movement
Effective friction and Extrusion, improves the deformation rule of aluminium ingot base, improves the mechanical performance of the thin seamless aluminium tubing of length；Using aluminium ingot long
With the fashion of extrusion of step bottle pin, the production of the thin seamless aluminium tubing of length is realized on large-sized double-shaft double-action reverse extruder.
It is exemplified as above be only to of the invention for example, do not constitute the limitation to protection scope of the present invention, it is all
It is that design same or analogous with the present invention is belonged within protection scope of the present invention.The portion that the present embodiment is not described in detail
Part and structure belong to the well-known components and common structure or conventional means of the industry, do not describe one by one here.
Claims (6)
1. a kind of thin effective friction and Extrusion device of seamless aluminium tubing of length, including the back rest for setting gradually from left to right（4）, pull bar gland
（15）And front-axle beam（17）, pull bar gland（15）One end be set on front-axle beam（17）On, other end is set on the back rest（4）On,
It is characterized in that：The back rest（4）Fixedly mount master cylinder（1）, master cylinder（1）Main plunger is built-in with perforation oil cylinder（2）, perforation oil
Cylinder（2）Inner chamber is connected to piston rod of perforating（3）, piston rod of perforating（3）It is connected to needle stand of perforating（5）, needle stand of perforating（5）It is connected to
Pecker（9）, pecker（9）End is connected to syringe needle of perforating（10）, the pecker（9）It is connected to control valve, on control valve
High frequency sound valve is installed；
Master cylinder（1）Main plunger is connected to moving beam（6）, moving beam（6）It is fixedly connected hollow pressure ram（7）, perforation
Needle stand（5）It is placed in hollow pressure ram（7）It is interior, the moving beam（6）And front-axle beam（17）Between be provided with recipient（8）, it is hollow
Pressure ram（7）Penetrate recipient（8）And slided in cylinder, recipient（8）It is built-in with hollow aluminium ingot（12）, hollow aluminium ingot（12）With
Hollow pressure ram（7）Between be provided with dummy block（11）；
Front-axle beam（17）With the back rest（4）Relative one end is connected to mobile formwork（16）, mobile formwork（16）Upper fixed mold shaft
（14）, mold shaft（14）With hollow aluminium ingot（12）Between be provided with mould（13）, mould（13）With mold shaft（14）End contact is fixed.
2. the thin effective friction and Extrusion device of seamless aluminium tubing is grown as claimed in claim 1, it is characterised in that：The pecker（9）
Outer wall upper sleeve through has fairlead（18）.
3. the thin effective friction and Extrusion device of seamless aluminium tubing is grown as claimed in claim 1, it is characterised in that：The perforation syringe needle
（10）It is step bottle pin.
4. the thin effective friction and Extrusion device of seamless aluminium tubing is grown as claimed in claim 1, it is characterised in that：The pull bar gland
（15）There are four, four pull bar glands（15）It is arranged in parallel and circumferentially around formation cavity, master cylinder（1）, moving beam
（6）, perforation piston rod（3）, perforation needle stand（5）, pecker（9）, perforation syringe needle（10）, mold shaft（14）It is placed in the cavity.
5. the thin effective friction and Extrusion device of seamless aluminium tubing is grown as claimed in claim 4, it is characterised in that：Described each pull bar
Gland（15）Inside it is coated with pull bar, pull bar gland（15）Sectional area be 1.3 times of pull bar sectional area.
6. it is a kind of to grow the thin effective friction and Extrusion production method of seamless aluminium tubing, it is characterised in that to comprise the following steps：
Step one, upper ingot
Master cylinder（1）With perforation oil cylinder（2）While pressurizing urges moving beam（6）And recipient（8）To front-axle beam（17）Direction is moved
It is dynamic, until mold shaft（14）Penetrate recipient（8）It is interior, start auxiliary manipulator by dummy block（11）, hollow aluminium ingot（12）And mould
（13）Extruding center line is sent to, makes moving beam（6）With hollow pressure ram（7）To front-axle beam（17）Dummy block is withstood in movement（11）,
Mould（13）And mold shaft（14）End contact, withdraws auxiliary manipulator, and upper ingot is completed；
Step 2, perforation
Perforation oil cylinder（2）Promote hollow pressure ram（7）Drive recipient（8）To the back rest（4）It is mobile, successively by mould（13）, it is empty
Heart aluminium ingot（12）And dummy block（11）It is inserted in recipient（8）Inner chamber, oil cylinder of perforating（2）Drive pecker（9）With perforation syringe needle
（10）To front-axle beam（17）Advance, sequentially pass through dummy block（11）, hollow aluminium ingot（12）And mould（13）, moving beam（6）And sky
Heart pressure ram（7）To front-axle beam（17）Movement is to hollow aluminium ingot（12）Jumping-up is carried out, while starting the control of high frequency sound valve to pecker
（9）Positioned；
Step 3, extruding
Master cylinder（1）Promote hollow pressure ram（7）And recipient（8）Together to front-axle beam（17）Movement starts extruding, seamless aluminium tubing
（20）From perforation syringe needle（10）And mould（13）Between extrude, and through front-axle beam（17）Outlet enter rear portion finishing procedure, it is long
Thin seamless aluminium tubing extruding production is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710197377.4A CN106825094A (en) | 2017-03-29 | 2017-03-29 | The thin effective friction and Extrusion device of seamless aluminium tubing of one kind length and extrusion method for producing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710197377.4A CN106825094A (en) | 2017-03-29 | 2017-03-29 | The thin effective friction and Extrusion device of seamless aluminium tubing of one kind length and extrusion method for producing |
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| Publication Number | Publication Date |
|---|---|
| CN106825094A true CN106825094A (en) | 2017-06-13 |
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ID=59140988
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710197377.4A Pending CN106825094A (en) | 2017-03-29 | 2017-03-29 | The thin effective friction and Extrusion device of seamless aluminium tubing of one kind length and extrusion method for producing |
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| CN (1) | CN106825094A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787774A (en) * | 2018-03-23 | 2018-11-13 | 中国重型机械研究院股份公司 | A kind of hydrostatic extruder and pressing method of wire wrapped |
| CN108994103A (en) * | 2018-08-16 | 2018-12-14 | 中国重型机械研究院股份公司 | A kind of aluminium alloy seamless profile shapes backward double-acting pressurizing unit and production method |
| CN111054870A (en) * | 2019-11-19 | 2020-04-24 | 南通永大管业股份有限公司 | Ultra-long upsetting device for large-wall-thickness seamless steel pipe and using method thereof |
| CN111613369A (en) * | 2020-06-12 | 2020-09-01 | 无锡统力电工股份有限公司 | Hollow copper flat wire and preparation method thereof |
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| CN205463671U (en) * | 2016-03-22 | 2016-08-17 | 中国重型机械研究院股份公司 | Reverse double acting extruder rigidity reinforcing means |
| CN205478690U (en) * | 2016-03-29 | 2016-08-17 | 中国重型机械研究院股份公司 | Tapering keeps hydraulic control device |
| CN206643145U (en) * | 2017-03-29 | 2017-11-17 | 中国重型机械研究院股份公司 | The long thin effective friction and Extrusion device of seamless aluminium tubing of one kind |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787774A (en) * | 2018-03-23 | 2018-11-13 | 中国重型机械研究院股份公司 | A kind of hydrostatic extruder and pressing method of wire wrapped |
| CN108994103A (en) * | 2018-08-16 | 2018-12-14 | 中国重型机械研究院股份公司 | A kind of aluminium alloy seamless profile shapes backward double-acting pressurizing unit and production method |
| CN108994103B (en) * | 2018-08-16 | 2023-10-10 | 中国重型机械研究院股份公司 | Aluminum alloy seamless profiled bar reverse double-acting extrusion device and production method |
| CN111054870A (en) * | 2019-11-19 | 2020-04-24 | 南通永大管业股份有限公司 | Ultra-long upsetting device for large-wall-thickness seamless steel pipe and using method thereof |
| CN111054870B (en) * | 2019-11-19 | 2022-04-05 | 南通永大管业股份有限公司 | Ultra-long upsetting device for large-wall-thickness seamless steel pipe and using method thereof |
| CN111613369A (en) * | 2020-06-12 | 2020-09-01 | 无锡统力电工股份有限公司 | Hollow copper flat wire and preparation method thereof |
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Application publication date: 20170613 |