CN100594076C - Process for vacuum weld chamber combined dies copper production porous shape - Google Patents
Process for vacuum weld chamber combined dies copper production porous shape Download PDFInfo
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- CN100594076C CN100594076C CN200710048194A CN200710048194A CN100594076C CN 100594076 C CN100594076 C CN 100594076C CN 200710048194 A CN200710048194 A CN 200710048194A CN 200710048194 A CN200710048194 A CN 200710048194A CN 100594076 C CN100594076 C CN 100594076C
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Abstract
The invention discloses a technique and a device in producing multihole copper profile by a composite mold of a welded vacuum cavity, and is characterized in that the conventional horizontal type extruding machine extrudes the copper profile which has a closed cavity, the moveable die carrier (13) is equipped with a set of composite mold (19) that is assembled by a flow distribution bridge (20) and a welded mold (21); a core head extends out of the plane of the bridge bottom which can have a plurality of core heads; the core heads extends into the welded mold cavity, and together with the moldcavity to form a desired space with a closed cavity. The back end of a front cross beam (15) is a water sealing groove (18), a vacuum valve (23) is arranged above the groove, the outside of the groove is connected with a vacuum air pump; the front end of the front cross beam has an extrusion cylinder (11); when in operation, the billet (10) in extrusion cylinder deforms to seal the front end of the moveable die carrier, the exit of the front cross beam is sealed by the water in the water sealing groove, and the vacuum air pump goes into operation to make the periphery of the composite mold becoming a vacuum environment; the copper billet enters the welded mold through the flow distribution bridge, and in vacuum state passes through the annular space which are structured by the welded moldand the core head of the flow distribution bridge, and then is welded into extruded products (24) with pipe shape or multihole shape.
Description
The present invention discloses a kind of vacuum weld chamber combined dies copper production porous shape skill and device.
Affiliated technical field
The invention belongs to the metal manufacture field, the present invention relates to the Processes and apparatus of porous copper section bar crimp, specifically a kind of vacuum weld chamber combined dies copper production porous shape skill and device.
Background technology
Metallic copper is with its favorable conductive, heat conduction, corrosion resistance and be convenient to cold and hot pressure processing, has become one of metal that maximum uses, industrial be widely used in make conduction is arranged, heat conduction and the various equipment that require such as anti-corrosion.Adopt pressing method production pipe, rod and line base to become a kind of main method of pressure processing in the copper process technology.The extrusion process of copper has cold and hot branch, and large-scale industrial production mainly is to adopt hot extrusion processing.
The hot extrusion processing technology is heated to billet the temperature that is fit to distortion earlier, then hot billet (10) is become required finished product by the extruder extrusion process.Conventional horizontal oil pressure extruder (referring to Fig. 1) is gone up at the rear cross beam (3) of lathe bed (2) master cylinder (1) is installed, main plunger (4) can move forward and backward in master cylinder by hydraulic control, perforation cylinder (5) is equipped with in main plunger inside, its effect is can be to the online perforation of solid copper billet, solid billet is become hollow ingot (referring to Fig. 2), further be squeezed into pipe.The master cylinder front end is recipient (11), the recipient front end is mobile formwork (13) and front beam (15), the nib of laying extrusion die (12) and die-cushion (14) is arranged in the middle of the mobile formwork, 2 groups of recipient cylinders (17) are installed on the front beam, recipient pull bar (16) stretches out outside the recipient cylinder, be connected with recipient, recipient can be moved forward and backward at lathe bed by the pulling of recipient pull bar, when being moved along to when being close to mobile formwork (13), the recipient cylinder just tightly is locked in the front beam front end with the extrusion die of installing on recipient and the mobile formwork, at this moment, billet (10) and dummy block (9) that liter ingot machine (8) will heat are delivered to the recipient front end, the oil-feed of extruder master cylinder, and main plunger moves ahead, extrusion axis (7) promotes dummy block and billet moves ahead, and enters in the recipient.Rise the ingot machine and descend, extrusion axis enters in the recipient, shift billet onto extrusion die before.Master cylinder continues to move ahead, and extrusion axis withstands the billet distortion, extrudes in the front beam nib, becomes a solid copper section bar or a copper rod.When moving ahead, master cylinder billet is withstood on (referring to Fig. 2) on the mould bases by extrusion axis, master cylinder is motionless, the action of perforation cylinder, the pecker (6) that is installed in the perforation cylinder stretches out from master cylinder, withstand on the billet of jumping-up, enough big piercing force will pass the hole of and the same thickness of pecker on billet, when pecker is forwarded to the extrusion die position, extrusion die and pecker have just constituted an annular space, extrusion axis was tried hard to recommend at master cylinder and was continued to move ahead under moving this moment, billet crimp is passed through from the annular space of external mold and pecker formation, formed pipe.
From above statement as seen, the metal copper material is by the extruding of extrusion axis to billet, makes billet by force by external mold, can produce various solid type bars, adds that the pecker extruding can produce tubing.
The processing technology and the copper material of metallic aluminium are made a world of difference.Metallic aluminium has good seam performance, add man-hour in hot extrusion, metallic aluminium does not adopt the perforation extruding but adopts the production of seam mould, metallic aluminium is divided into several by combination die and enters the seam chamber, the metallic aluminium that is divided into several in the seam chamber can be welded together again, form enclosed cavity, this method not only can be produced the single hole aluminum pipe, but also production porous aluminum section bar.
Metallic copper adopts the production of seam mould very difficult, and the thermal conductivity of copper is good, and heat capacity ratio aluminium is little, thereby the billet that is heated to high temperature is easy to cooling the extruding drag is strengthened greatly; There was layer oxide film on copper billet surface when the easily oxidizable of copper made the high temperature extruding, seam when this tunic has hindered the copper ingot extruding.Only push at vacuum state, the stable high temperature in border, seam chamber when keeping extruding simultaneously, the seam that just can have aluminium to show is produced in the extruding of copper material.
This specific character of metal copper material has formed now, and metal copper pipe in countries in the world is having the technology of producing with pecker on the extruder of perforation system.The technology that adopts hollow ingot blank production of copper pipe is also arranged, and billet is cast hollow earlier, or adopts alternate manner elder generation drilling bore hole, pushes with pecker again.During the pecker extruding, itself is equivalent to internal mold pecker, and tubing passes through to be shaped in the space of interior external mold by force.
It also is that the copper section bar of the most reliable production band enclosed cavity mainly is that copper pipe produces brilliant mode that above-mentioned extrusion production technology has constituted the most general.
Traditional production technology also comprises the production without extrusion.
Roll the mode of employing hot-puncturing process on the punch at Dou and produce copper pipe, its main technique is to adopt the mode of hot piercing to pass a hole earlier at the billet center on the solid copper billet, in perforation, be rolled, a bigger round billet is processed into one section long thick pipe, carries out next step processing then.
Another kind of without extrusion production and be to be adopted the technology of producing copper pipe in a large number by producer in recent years, be directly rolling to the hollow copper billet that casts out, what be dominant in the market is a kind of casting and roll process that is called as Outokumpu, adopt the big processing capacity of three-high mill tube reducing, subtract wall, the pipe of producing shows good workability in the following process process.
The production worker mode that the direct rolling hollow ingots of the big milling train of direct employing periodic is also arranged.
All are above-mentioned introduces existing copper tube production process, all continues to use a kind of processing thought when producing the copper section bar of band enclosed cavity, gets the hole earlier, back processing.The copper pipe that is to say countries in the world production now all is a seamless pipe.
The quality of seamless pipe is better than seamed pipe certainly, but brings the numerous and diverse of production technology simultaneously, energy consumption from enterprise, also the production to some complex-shaped copper section bars brings difficulty, such as the production of copper porous section bar.
Summary of the invention
Processing such as the copper section bar that the objective of the invention is to overcome existing band enclosed cavity can only push after getting the hole earlier on the billet, rolling and a kind of vacuum weld chamber combined dies copper production porous shape skill is provided and installs.
Technical solution of the present invention is as follows: the present invention discloses a kind of vacuum weld chamber combined dies copper production porous shape skill and device, it is characterized in that: during with the copper section bar of conventional horizontal extruder compressive zone enclosed cavity, go up installation one cover combination die (19) at mobile formwork (13), this combination die is assembled by shunting bridge (20) and seam mould (21), middle with pin (25) location, on the shunting bridge, have tap hole, the bridge baseplane has core print to stretch out, the requirement of looking the porous section bar can have a plurality of core prints, this core print extend in the die cavity of seam mould, this die cavity is a closed curve, normally circular, the core print in this curve and the curve has constituted the annular space (referring to Fig. 7) of desired extruded product; One vacuum valve (23) is installed in the rear end of extruder front beam, and the external vacuum suction device of vacuum valve, extruder front beam directly are outward water sealed tanks (18), and the front beam front end is mobile formwork (13) and recipient (11); Extruding force forces recipient, mobile formwork and extruder front beam to be close together during work, the mobile formwork front end is sealed in blank in the recipient (10) distortion, water in the water sealed tank will become the outlet sealing of front beam into vacuum environment by vacuum suction device around front beam endoporus and the extrusion die; Metal stock enters the seam mould by the shunting bridge that is under the vacuum state during extruding, in the annular space of seam mould and shunting bridge core print formation, pass through, extruding force forces the metal charge seam to become an integral body by the seam model cavity, finally becomes tubulose or the cavernous extruded product of diplopore shape (24).
Description of drawings
Fig. 1 is a copper pipe forward extrusion machine schematic diagram.
Fig. 2 is the pecker schematic diagram of boring a hole on ingot blank.
Fig. 3 is the combination die schematic diagram.
Fig. 4 .1 is shunting bridge floor map.
Fig. 4 .2 is shunting bridge elevational schematic view.
Fig. 5 .1 is a seam mould floor map.
Fig. 5 .2 is a seam mould elevational schematic view.
Fig. 6 is the vacuum weld chamber schematic diagram.
Fig. 7 is the Crossed Circle enclosed cavity of seam model cavity and core print formation.
The specific embodiment
Basic design philosophy of the present invention is embodied in the following aspects.
1, the present invention has adopted combination die.
Extruder is a kind of metal to be carried out hot worked machine.For different metals, select the machine of different big or small extruding forces for use, under the corresponding temperature that is fit to be out of shape, metal is extruded from designed extrusion die by force, to finish the thermal deformation of metal stock.When metal is passed through extrusion die by force, can form the shape of metallic article according to the shape of extrusion die.When a solid metal stock obviously also can only form the goods that a kind of its profile can be launched into a continuous solid interface during by extrusion die.If require in goods, to form the section bar of a middle band enclosed cavity,, will different requirements have been arranged to mould such as tubing by extrusion process.
What adopt in the aluminium extrusion process is that metal stock is split into two or several earlier when entering extrusion die, enters die cavity, and the metal stock seam that will shunt under HTHP forms desired article shape together.Can be poroid, also can be cavernous.The easy seam of metallic aluminium has guaranteed the normal use of the technology of aluminium section bar seam extruding.In the aluminium processing industry, the aluminum pipe great majority all are to adopt the seam mould to produce, and also promptly all are seamed pipes.
In the copper processing industry,,, or after getting a hole on the billet, reprocess earlier so copper pipe production up to now all is to adopt the pecker extruding because the easily oxidizable of copper is difficult to adopt the seam method to be produced.
The present invention has adopted combination die.
The combination die Front-end Design that the present invention adopts the shunting bridge, the copper billet that is heated to uniform temperature is divided into two and is squeezed into the seam chamber when entering combination die shunting bridge, seam chamber limit portion is gradient, the seam power when entering die cavity to strengthen the metal that comes out from the shunting bridge; Core print on the shunting bridge extend in the middle of the die cavity calibrating strap, and the annular space (Fig. 7) that is formed by core print and die cavity has constituted shape of products, and metal stock is pushed through the shape that the shape that just constitutes with this space behind this space becomes extruded product by force.
2, the present invention has adopted vacuum weld chamber.
Around having designed in the seam chamber, the present invention forms the device of vacuum atmosphere.
Conventional copper pipe extruder all adopts a kind of technology that is called as the water seal extruding now.The copper pipe extrusion process is a kind of hot procedure, and the copper blank need enter crimp under the deformation temperature preferably, and fine copper is generally heated more than 800 degree.The circuitous air of the finished product of extruding under this temperature is with regard to oxidation, and there is a thick layer of black oxide layer extruded product cooling rear surface, and follow-up cold working process will be removed this oxide layer earlier, and traditional handicraft is to use pickling, allows metallic copper expose true qualities.Present production technology is to load onto tank one in extruder front beam exit; allow and extrude material beam aperture before going out and enter in the water; because water conservation on every side extrude material and when hot state, be not exposed in the air; cooled off when from tank, being taken out, thereby made extruded product not oxidized Deng the product of extruding.This water seal arrangement has directly sealed the outlet of front beam.
Conventional copper extruder has designed a mobile formwork at extruder front beam arrival end, this mould bases is laid extrusion die, because extrusion die will be adjusted back and forth, so this mould bases is designed to and can moves around along front beam front end horizontal guide rail, can enter duty when moving on to the center, replaceable mold or spot repair mould etc. when being moved out on one side.The mobile formwork front end is a recipient, is required that the metal stock that is out of shape is contained in this mould tube exactly, and extrusion axis withstands billet and advances in the mould tube, and billet will produce distortion according to the shape of mould before pushing up mould.This distortion produces under the high extruding force of high temperature, and mould tube, mould bases all tightly are locked on the front beam at this moment, and the metal stock distortion in the recipient is all sealed mould tube and mould, and isolate from outer air.
The present invention has transformed the extruder front beam, adopted the technology that the front beam endoporus is bled with vavuum pump, front beam front end recipient internal strain blank seals outside air, water in the water sealed tank of front beam rear end seals outside air, with vavuum pump front beam is vacuumized, cause vacuum atmosphere at the front beam endoporus, mould is in a kind of vacuum environment, and this moment, the distortion of metal stock realized under anaerobic state.
According to foregoing invention thought in conjunction with the field conduct example, referring to Fig. 6 as can be known a kind of vacuum weld chamber combined dies copper production porous shape of the present invention skill adopted under vacuum atmosphere with combination die extruding production of copper porous section bar.
Present embodiment is selected the vacuum weld chamber combined dies copper production porous shape skill for use, the copper diplopore section bar of processing profile 75 * 35, diplopore ￠ 25 (referring to Fig. 7).Extrusion equipment is with 800 tons of two moving copper extruders, and the copper billet of ￠ 150 * 350mm in the nib of mobile formwork ￠ 230mm, is installed a cover combination die.Wherein shunt bridge diameter ￠ 175mm, 2 rectangles (referring to Fig. 4 .1) that tap hole is a sideband arc, circular arc R 100, twin-core, the long 40mm of core print stretches into the partly long 15mm of die cavity, shunting bridge height overall (disregarding the twin-core height) 60mm; Seam mould external diameter ￠ 175mm, height 80, dark 20 (referring to Fig. 5 .2) in middle seam chamber, shape is identical with the divergent die inlet, is the rectangle (referring to Fig. 5 .1) on 2 sideband arc limits, and the die cavity short transverse has the slope of 10 degree along the design of circular arc 2 limits.
800 tons of extruder front-axle beam outlets are the rectangle of 2 sideband circular arcs, front beam is an integral cast steel spare, process the M20 screw at front beam by the water sealed tank pelvic outlet plane, adorn a ￠ 20 vacuum valve joints, the front beam body processes vacuum passage (22), passage aperture ￠ 20, straight-through front beam endoporus, before the extruding beginning, the extruder main plunger is sent billet into recipient by extrusion axis, billet advances to the extrusion die front end, the extruding force of transmitting on the extrusion axis is with the billet jumping-up in the recipient, the extrusion die front end forms the sealing shape, water level is higher than the outlet of extruder front beam in the extruder outlet place tank, high-order water is with the front beam exit seal, start vavuum pump this moment, air in the front beam hole is extracted out about 20 seconds final vacuum table demonstration-0.5MPa, seam extruding beginning by vacuum valve, extrusion axis advances blank, the metal that enters from tap hole enters the seam chamber at anaerobic state, and HTHP forms enough big seam power, blank seam in the seam chamber, extrude, the solid metal blank constantly is divided into 2 half from tap hole and enters the seam chamber, in the seam chamber, constantly be crowded together again, form an integral section and be extruded, finished the process of whole combination die seam extruding.
Serial number name:
1, master cylinder, 2, lathe bed, 3, rear cross beam, 4, main plunger, 5, the perforation cylinder, 6, wear Vent needle, 7, extrusion axis, 8, rise the ingot machine,, 9 dummy blocks, 10, billet, 11, recipient, 12, extrusion die, 13, mobile formwork, 14, die-cushion, 15, front beam, 16, recipient draws Bar, 17, the recipient cylinder, 18, water sealed tank, 19, combination die, 20, the shunting bridge, 21, weldering Matched moulds, 22, vacuum passage, 23, vacuum valve, 24, extruded product, 25, pin.
Claims (2)
1, a kind of vacuum weld chamber combined dies copper production porous shape skill, it is characterized in that: with the copper section bar of conventional horizontal extruder compressive zone enclosed cavity, mobile formwork (13) is gone up a cover combination die (19) is installed, a vacuum valve (23) is installed in the rear end of extruder front beam, the external vacuum suction device of vacuum valve, the vacuum passage that the front beam body processes (22) leads directly to the front beam endoporus, and front beam directly is outward a water sealed tank (18), and the front beam front end is mobile formwork (13) and recipient (11); Extruding force forces recipient, mobile formwork and extruder front beam to be close together during work, the mobile formwork front end is sealed in blank in the recipient (10) distortion, water in the water sealed tank is with front beam outlet sealing, vacuum environment will be become by vacuum suction device around front beam endoporus and the extrusion die, metal stock enters the seam mould by the shunting bridge that is under the vacuum state, in the annular space of seam mould and shunting bridge core print formation, pass through, finally become tubulose or cellular extruded product.
2, a kind of vacuum weld chamber combined dies copper production porous shape skill as claimed in claim 1, it is characterized in that: described mobile formwork (13) is gone up the combination die of installing and is assembled by shunting bridge (20) and seam mould (21), described shunting bridge baseplane has core print to stretch out, the requirement of looking extruded product can have a plurality of core prints, core print stretches into described seam model cavity, with the common space that constitutes desired band enclosed cavity of seam model cavity, shunting bridge and seam mould are located by pin (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200710048194A CN100594076C (en) | 2007-11-14 | 2007-11-14 | Process for vacuum weld chamber combined dies copper production porous shape |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710048194A CN100594076C (en) | 2007-11-14 | 2007-11-14 | Process for vacuum weld chamber combined dies copper production porous shape |
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| CN101199971A CN101199971A (en) | 2008-06-18 |
| CN100594076C true CN100594076C (en) | 2010-03-17 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101664769B (en) * | 2009-10-12 | 2012-07-25 | 福建金鑫钨业股份有限公司 | Extruding device of porous hard alloy profile |
| CN103559959B (en) * | 2013-11-20 | 2017-01-04 | 济南宝世达实业发展有限公司 | Two-hole hollow conductor and preparation method thereof |
| CN106271668A (en) * | 2016-08-29 | 2017-01-04 | 无锡市源昌机械制造有限公司 | Copper material extruding subsidiary engine |
| CN109848233A (en) * | 2019-02-15 | 2019-06-07 | 常州金方圆新材料有限公司 | A kind of pressurizing unit and pressing method of copper ingot |
| CN113732219B (en) * | 2021-08-12 | 2023-10-13 | 宁波复能稀土新材料股份有限公司 | Vacuum hot extrusion forming device for rare earth terbium target |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20080711 Address after: Zip code 21, NANDA Road, Baoshan District, Shanghai: 200436 Applicant after: Shanghai flying copper aluminum material Co., Ltd. Co-applicant after: Shanghai Flying Wheel Industrial Co., Ltd. Co-applicant after: Wang Xiaobang Address before: 21 South Da Road, Shanghai, post code: 200436 Applicant before: Shanghai flying copper aluminum material Co., Ltd. Co-applicant before: Wang Xiaobang Co-applicant before: Gao Jianping |
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Effective date of registration: 20091106 Address after: Zip code 21, NANDA Road, Baoshan District, Shanghai: 200436 Applicant after: Shanghai flying copper aluminum material Co., Ltd. Co-applicant after: Shanghai Feilun Non Ferrous New Material Co., Ltd. Co-applicant after: Shanghai Flying Wheel Industrial Co., Ltd. Address before: Zip code 21, NANDA Road, Baoshan District, Shanghai: 200436 Applicant before: Shanghai flying copper aluminum material Co., Ltd. Co-applicant before: Shanghai Flying Wheel Industrial Co., Ltd. Co-applicant before: Wang Xiaobang |
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Granted publication date: 20100317 Termination date: 20181114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |