CN103990775B - Extruding metal autoform method and its product - Google Patents

Extruding metal autoform method and its product Download PDF

Info

Publication number
CN103990775B
CN103990775B CN201410251953.5A CN201410251953A CN103990775B CN 103990775 B CN103990775 B CN 103990775B CN 201410251953 A CN201410251953 A CN 201410251953A CN 103990775 B CN103990775 B CN 103990775B
Authority
CN
China
Prior art keywords
extruding
metal
forging
die cavity
autoform
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201410251953.5A
Other languages
Chinese (zh)
Other versions
CN103990775A (en
Inventor
支前明
Original Assignee
支前明
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 支前明 filed Critical 支前明
Priority to CN201410251953.5A priority Critical patent/CN103990775B/en
Publication of CN103990775A publication Critical patent/CN103990775A/en
Application granted granted Critical
Publication of CN103990775B publication Critical patent/CN103990775B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The present invention discloses a kind of extruding metal autoform method and its product, especially light-alloy or light-alloy composite and casting, the extruding autoform method of forging and its product is completed in same mold.The present invention is that the development of the technologies such as extrusion casint, continuous casting continuous forging is improved, and mainly solves the problems, such as continuous casting continuous forging workpiece amount of plastic deformation less than forging critical strain amount.The technical scheme is that reserving unfilled die cavity in cast sections, its volume need to be more than the volume corresponding to workpiece forging critical strain amount;The forging stage realizes plastic deformation or crystal grain refinement stowing operation come full of die cavity by sliding cylinder extrusion again.The invention provides a kind of new metal heat processing and forming method, be will cast, forging, a kind of method of semi-solid processing three fusion, it is adaptable to the manufacture of high performance load part, air-tightness part such as aluminum vehicle wheel, connecting rod etc..

Description

Extruding metal autoform method and its product
Technical field
The present invention relates to metal or the manufacturing process and its product of metal-base composites, especially light-alloy or light-alloy Composite completes casting, the manufacturing process and its product of forging in same mold.
Background technology
Extrusion casint and die forging all belong to existing metal heat processing and forming method.Extrusion casint is that liquid metal material exists Mold cavity is full of under gravity or mechanical force, then makes molten metal crystallization and freezing at elevated pressures.Weak point is to squeeze Though pressure ratio pressure is higher than other casting methods, but still workpiece can not be made to produce obvious plastic deformation.
Die forging is, to solid metallic blank heating, to be then placed in forging die, and after forging press pressurization, solid metallic blank produces modeling Property deformation be full of forging die cavity.Die forging is primarily adapted for use in the workpiece of simple shape;For complex-shaped workpiece, the machine of forging adds Work cutting output is more much bigger than casting, therefore the production cost of die forging part is higher than extrusion casint.
Existing semi-solid metal forming method is to first pass through the treatment such as machinery, electromagnetic agitation or ultrasonic wave, prepare it is spherical or The semi solid slurry of nearly spheric grain or by semi-solid blank remelting, then control fraction solid account for 35% in solid-liquid mixture~ 65%, is then pressurizeed and semi solid slurry is filled mold cavity, and solidified completely under stress.The characteristics of semi-solid state forming technique It is:There must be a process for preparing spherical or near spheric grain semi solid slurry before filling die cavity.
Existing casting-forging process integration is that strand first is obtained with mold, then is put into forging die after strand is reheated and is forged Make;Two molds, two complete equipments are needed, is heated twice, production cost is high.Refer to Chinese patent " cast forging process of aluminum vehicle wheel " (application number 200580012476.6), " combination process for casting and forging of connecting rod " (application number 85106018).
Existing continuous casting continuous forging technology is the development to extrusion casint, casting-forging process integration etc., is characterized in:Metal material Mold cavity is full of in the liquid state, after after its solidification, the solid-state metallic material in same mold is forged at once;Because of it Forging amount is to be based on filling up the formation such as shrinkage cavity and porosity, stomata and solidification shrinkage of workpiece, therefore forging amount is less than normal, generally less than forges Critical strain amount is made, so that workpiece amount of plastic deformation is smaller than die forging.This technology is referred to《Continuous casting continuous forging technology》, it is Chen Ping Guang, old Elder brother writes, China Machine Press's first edition of in April, 2004;" metal fluid die-casting forging dual control is once-forming for Chinese patent Method " (application number 200410052493.X).
The content of the invention
It is an object of the invention to provide a kind of extruding metal autoform method, to overcome continuous casting continuous forging workpiece to be plastically deformed Deficiency of the amount less than forging critical strain amount;Another object of the present invention is to provide and is prepared by the extruding metal autoform method Metal or metal-base composite-material product.
To achieve the above object, the technical scheme that the present invention is provided is a kind of such, extruding metal autoform method, It is included in same mold and completes casting, forging, it is characterized in that, comprise the steps of and process conditions:
Step one, equipment prepares, mould prepares, molten metal prepares;The pouring temperature of the molten metal must not be higher than the material Expect the pouring temperature in extrusion casint or gravitational casting;
Step 2, matched moulds, locked mode;
Step 3, casting;Using gravity-assist pouring or low pressure casting or drift injection or electromagnetic pouring mode, by quantitative metal Liquid injects die cavity, running channel or the extrusion chamber of mould, but die cavity can not be completely filled with, but remains step 4 and refill;It is described not The volume for filling die cavity need to be more than the volume corresponding to workpiece forging critical strain amount;
Step 4, forging;By one or more plunger in same mould metal material apply once or Extruding more than once, until die cavity is full of;The extrusion ratio pressure of the extruding need to be more than metal material in final forging temperature The elevated temperature strength limit, extruding beginning condition is the fraction solid of solid-liquid mixture in die cavity up to more than 35%;
Step 5, pressurize;Die cavity continues to keep extruding force after being full of;Dwell time regarded the difference of workpiece, at 1-1800 seconds Interior selection;
Step 6, releases locked mode, die sinking, ejects pickup.
Further, the extruding metal autoform method, it is characterised in that:The cast temperature of the molten metal described in step one The pouring temperature spent than the material in extrusion casint or gravitational casting is low by 5%~15%.
Further, the extruding metal autoform method, it is characterised in that:Extrusion ratio pressure described in step 4 is more than gold Compressive yield strength of the category material in room temperature.
Further, the extruding metal autoform method, it is characterised in that:Extruding described in step 4 starts condition The fraction solid of solid-liquid mixture is more than 65% in die cavity.
Further, the extruding metal autoform method, the extrusion ratio pressure described in step 4 is more than metal material in room Compressive yield strength when warm, it is characterised in that:Extruding beginning condition described in step 4 in die cavity solid-liquid mixture consolidate Phase fraction is more than 65%.
Further, the extruding metal autoform method, it is characterised in that:Extruding described in step 4 starts condition Metal material has all solidified and temperature range is less than solidus temperature, higher than final forging temperature in die cavity.
Further, the extruding metal autoform method, the extrusion ratio pressure described in step 4 is more than metal material in room Compressive yield strength when warm, it is characterised in that:Extruding described in step 4 start condition in die cavity metal material it is complete Portion solidifies and temperature range is less than solidus temperature, higher than final forging temperature.
Preferably, the extruding metal autoform method, workpiece material is ZL101A aluminium alloys, it is characterized in that:Also wrap Following process conditions are included, aluminium liquid pouring temperature is 615~685 DEG C, and the volume of unfilled die cavity described in step 3 need to be more than 15%, Extrusion ratio pressure described in step 4 is 150~350MPa, and extruding beginning condition is that the fraction solid of solid-liquid mixture in die cavity exceedes 50% or 65%.
The metal or metal-base composites system prepared by any one method in above-mentioned extruding metal autoform method Product.
Preferably, ZL101A aluminum-alloy wheels, the load part for being prepared by aforementioned metal extruding autoform method.
Beneficial effect:Using technical scheme, workpiece amount of plastic deformation can be realized more than forging critical strain amount, And cost reaches or close to the effect of forging close to casting, performance.The low then workpiece performance of pouring temperature is good;And low temperature may lead The misrun casting flaw of cause, can fill to eliminate by the plastic deformation forged.Solid-liquid mixture is in metal material Start extruding under state, then can have the effect of part semi-solid processing, but of the invention and need not be complicated semi solid slurry concurrently Preparation process.Also the operation without pre-production die forging strand, reheating of the invention.The present invention is in same mold In, will casting, forging, the innovation of semi-solid processing three fusion.
Brief description of the drawings
Accompanying drawing is used for being easy to explain the present invention together with embodiment, but is not construed as limiting the invention.
Fig. 1 is the principle schematic of extruding metal autoform method.
In figure:1- squeeze cylinders, 20- plungers, 21- plunger bushings, 3- extrusion chambers, 4- cast gates, the unfilled die cavities of 50-, 51- cast Metal material afterwards, the workpiece after 52- forgings, mould under 61-, 62- side forms, the upper moulds of 63-, 7- push rods, 8- side form cylinders, 9- base plates.
Specific embodiment
With reference to a preferred embodiment and its accompanying drawing, the invention will be further described.
The present embodiment provides a kind of extruding metal autoform method and its product, is that a kind of trade mark is the ZL101A (U.S. Trade mark A356.2, Japan trade mark AC4CH) aluminum-alloy wheel, it is comprised the following steps:
Step one, equipment, mould, aluminium liquid etc. prepare;Equipment can be special extruding casting forging equipment or tampered liquid Morphotype forging extruder, die casting machine etc.;Mould includes lower mould (61), side form (62), upper mould (63), plunger (20), plunger bushing (21) Deng, it is also possible to without side form;Allow one-mold multiple-member;Mould installion on base plate (9), it is necessary to clear up, spray paint, be preheated to 150- 300 DEG C or so, equipment for cooling die can be enabled during continuous production;Aluminium liquid pouring temperature after refining degasification is controlled 615~685 DEG C, it is better closer to liquidus temperature;And pouring temperatures of the ZL101A in extrusion casint, gravitational casting or low pressure casting then As be 690~720 DEG C;
Step 2, matched moulds, locked mode;First matched moulds is poured into a mould preferentially again;If first pouring into a mould again the mode of matched moulds, filling and forging, Dimensional uniformity to product is unfavorable, meanwhile, entirely upper mould makees extruding drift, then required equipment tonnage is greatly increased;According to normal Know, clamp force need to be more than swollen type power, can realize locked mode with side form cylinder (8) or other clamping mechanisms etc.;
Step 3, casting;Using gravity-assist pouring or other pouring types, quantitative aluminium liquid is injected die cavity, the running channel of mould Or extrusion chamber (3), but die cavity can not be completely filled with, but remain step 4 and refill, that is, reserve unfilled die cavity (50);It is described The volume of unfilled die cavity need to be more than the volume corresponding to workpiece forging critical strain amount, to treat follow-up plastic history institute Need, can be by controlling diameter of plunger etc. to achieve the goal;Can also design technology further chambers as the one of unfilled die cavity Part;Metal material in extrusion chamber need to be slightly more than the volume of unfilled die cavity;For aluminium alloy, forging critical strain amount is general 12%~15%;Cast gate (4) can be one or more, and pouring position can be that teeming, rising pouring or side are noted, or several cast gates Pour into a mould simultaneously;Filtering object can be placed in cast gate;
Step 4, forging;With the squeeze cylinder (1) in equipment by one or more plunger (20) to same mould In lose the metal material (51) of routine casting mobility and apply the extruding of once or more, until die cavity is full of, and And be stowing operation based on plastic deformation or crystal grain refinement;Can simultaneously be extruded using extruding under plunger or up and down if necessary Mode;When having local compression plunger, can synchronously be extruded with main plunger, it is also possible to asynchronous extruding;Extrusion ratio pressure for 150~ 350MPa or higher, the more big then forging effect of extrusion ratio pressure is stronger, but required equipment tonnage is bigger;The solid phase of ZL101A aluminium alloys Line temperature is 545 DEG C, and final forging temperature is 380 DEG C, interval about 450-550 DEG C of optimal plastic deformation temperatures;Extrusion speed according to Different workpieces are adjusted, being conducive to being plastic deformation to principle;Extruding beginning condition is the solid phase point of solid-liquid mixture in die cavity Number is more than 50% or 65%;If without external force effect, solid-liquid mixture typically begins to lose casting after fraction solid is more than 35% Make mobility;More big then its mobility of fraction solid is poorer, while plastic deformation effect is better, but required extruding force, clamp force It is bigger;In actual production, can also control to extrude beginning condition by extruding time started or mold temperature etc.;
Step 5, pressurize;Die cavity continues to keep extruding force after being full of;Dwell time regarded the difference of workpiece, at 1-1800 seconds Interior selection;The dwell time of ZL101A aluminum-alloy wheels is generally 5-60 seconds;
Step 6, releases locked mode, die sinking, the workpiece (52) after push rod (7) ejection forging;Pushing method can be upper top Go out, or it is lower ejection etc..
Present invention is particularly suitable for preparing high performance light-alloy load part, such as air-tightness part, wheel, connecting rod, system Dynamic pump etc..Material can be casting alloy, deforming alloy or metal-base composites;The semi solid slurry for having prepared can also be used for The present invention.
The present invention is not only limited in above-mentioned implementation method, by the way of identical with the above embodiment of the present invention or approximate, Obtained from extruding metal autoform method and its product, the present invention claims determine scope of patent protection It is interior.

Claims (10)

1. a kind of extruding metal autoform method, is included in same mold and completes casting, forging, it is characterized in that, comprising Following steps and process conditions:
Step one, equipment prepares, mould prepares, molten metal prepares;The pouring temperature of the molten metal must not be higher than the molten metal Pouring temperature of the material in extrusion casint or gravitational casting;
Step 2, matched moulds, locked mode;
Step 3, casting;Using gravity-assist pouring or low pressure casting or drift injection or electromagnetic pouring mode, by quantitative molten metal note Enter die cavity, running channel or the extrusion chamber of mould, but die cavity can not be completely filled with, but remain step 4 and refill;It is described unfilled The volume of die cavity need to be more than the volume corresponding to workpiece forging critical strain amount;
Step 4, forging;The metal material in same mould is applied once or twice by one or more plunger Extruding above, with the stowing operation of plastic deformation until die cavity is full of;The extrusion ratio pressure of the extruding need to be more than metal material Expect the elevated temperature strength limit in final forging temperature, extruding beginning condition be solid-liquid mixture in die cavity fraction solid up to 35% with On;The extrusion ratio pressure refers to the ratio of the extruding force and ram area being added on plunger;
Step 5, pressurize;Die cavity continues to keep extruding force after being full of;Dwell time regards the difference of workpiece, the choosing in 1-1800 seconds Take;
Step 6, releases locked mode, die sinking, ejects pickup.
2. extruding metal autoform method according to claim 1, it is characterised in that:Molten metal described in step one Pouring temperature is lower by 5%~15% than the pouring temperature of the molten metal material in extrusion casint or gravitational casting.
3. extruding metal autoform method according to claim 1 and 2, it is characterised in that:Extruding described in step 4 It is more than compressive yield strength of the metal material in room temperature than pressure.
4. extruding metal autoform method according to claim 1 and 2, it is characterised in that:Extruding described in step 4 Beginning condition is the fraction solid of solid-liquid mixture in die cavity more than 65%.
5. extruding metal autoform method according to claim 3, it is characterised in that:Extruding described in step 4 starts Condition is the fraction solid of solid-liquid mixture in die cavity more than 65%.
6. extruding metal autoform method according to claim 1 and 2, it is characterised in that:Extruding described in step 4 Beginning condition is for metal material has all solidified and temperature range is less than solidus temperature, higher than final forging temperature in die cavity.
7. extruding metal autoform method according to claim 3, it is characterised in that:Extruding described in step 4 starts Condition is for metal material has all solidified and temperature range is less than solidus temperature, higher than final forging temperature in die cavity.
8. extruding metal autoform method according to claim 1, workpiece material is ZL101A aluminium alloys, its feature It is:Also include following process conditions, aluminium liquid pouring temperature is 615~685 DEG C, and the volume of unfilled die cavity described in step 3 is needed greatly In 15%, extrusion ratio pressure described in step 4 is 150~350MPa, and extruding beginning condition is the solid phase point of solid-liquid mixture in die cavity Number is more than 50%.
9. the metal or metal-base composites system for being prepared by one of claim 1-7 described extruding metal autoform method Product.
10. the load part for being prepared as the extruding metal autoform method described in claim 8, including ZL101A aluminium alloy cars Wheel.
CN201410251953.5A 2014-06-06 2014-06-06 Extruding metal autoform method and its product Active CN103990775B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410251953.5A CN103990775B (en) 2014-06-06 2014-06-06 Extruding metal autoform method and its product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410251953.5A CN103990775B (en) 2014-06-06 2014-06-06 Extruding metal autoform method and its product

Publications (2)

Publication Number Publication Date
CN103990775A CN103990775A (en) 2014-08-20
CN103990775B true CN103990775B (en) 2017-07-07

Family

ID=51305249

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410251953.5A Active CN103990775B (en) 2014-06-06 2014-06-06 Extruding metal autoform method and its product

Country Status (1)

Country Link
CN (1) CN103990775B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104368790B (en) * 2014-11-11 2018-04-06 创金美科技(深圳)有限公司 A kind of metal liquid fluctuates high die casting forging one-step moulding method
CN104625014B (en) * 2014-12-30 2016-08-24 太原科技大学 The method that the nearly solid state pressure of a kind of train wheel shapes
CN104815974B (en) * 2015-04-21 2017-07-25 同济大学 A kind of molten metal forging shaped device and its application method
CN105014038A (en) * 2015-06-30 2015-11-04 湖州鑫霸液压机制造有限公司 Residual material recycling device of multi-station die-casting machine
CN105170936A (en) * 2015-09-06 2015-12-23 无锡贺邦金属制品有限公司 Aluminium alloy metal piece vacuum pressing technology
CN105215327B (en) * 2015-10-31 2019-10-11 重庆鼎汉机械有限公司 The extruding manufacturing process of wheel hub outer ring
CN106975739A (en) * 2016-01-17 2017-07-25 梁长城 The steel die and its fine casting method cast for stainless steel or cast iron
CN106312016B (en) * 2016-10-17 2018-01-05 华中科技大学 A kind of aluminum alloy forge piece vibration casting forging combined shaping method
CN107138706A (en) * 2017-04-13 2017-09-08 中北大学 Metal liquid filling, Plastic Flow compound Die Forging technique
CN108359912B (en) * 2018-02-28 2020-02-21 江苏大学 Integrated production method of roller sleeve
CN109158519B (en) * 2018-10-31 2020-01-14 扬州易达利机械科技有限公司 Aluminum alloy hub casting and forging equipment
CN109628734A (en) * 2019-01-08 2019-04-16 长沙威尔保新材料有限公司 A kind of fire grate bar for sintering pallet
CN111745121A (en) * 2020-06-29 2020-10-09 东北大学 High-formability forging method and device for magnesium alloy hub

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101152665A (en) * 2006-09-30 2008-04-02 宁波拓普隔音系统有限公司 Aluminum alloy precast-forging forming technique and mold thereof
JP2008290131A (en) * 2007-05-25 2008-12-04 Akira Asari High-pressure casting and forging machine, and method for producing high-pressure cast and forged product
CN101704088B (en) * 2009-11-10 2011-10-05 姚国志 Alloy liquid extrusion casting forming device and process method thereof
CN101934336B (en) * 2010-09-14 2012-07-04 华中科技大学 Method and device for semi-solid precision rheo-casting of light alloys
CN201871710U (en) * 2010-10-19 2011-06-22 中信戴卡轮毂制造股份有限公司 Semi-solid die-forging aluminum-alloy wheel die
CN202097389U (en) * 2011-06-21 2012-01-04 中信戴卡轮毂制造股份有限公司 Wheel mold formed by gravity pouring extrusion

Also Published As

Publication number Publication date
CN103990775A (en) 2014-08-20

Similar Documents

Publication Publication Date Title
CN103614586B (en) Al 2o 3the preparation method that hollow ball/aluminium is composite porous
AU774870B2 (en) Method and apparatus for producing semisolid metal slurries and shaped components
KR100944130B1 (en) Semi-solid molding method
US3106002A (en) Die-casting method
CN106077257B (en) Almag wheel hub moulding process and equipment
EP0845316B1 (en) Molding of hollow parts from thixotropic semi-solid metal alloy using gas pressure
JP4379621B2 (en) Aluminum alloy forming method
US10118219B2 (en) Semisolid casting/forging apparatus and method as well as a cast and forged product
JP3212245B2 (en) Casting method, casting apparatus and casting
CN102626821B (en) Method for connecting semi-solid materials into whole
TWI555595B (en) Method and device for producing a metal component by using a casting-and forming-tool
CN105880486B (en) A kind of mold and method of casting hub
JP2005074461A (en) Molding manufacturing method
US7299854B2 (en) Semi-solid molding method
CN105014045B (en) A kind of Compound Extrusion casting method of magnesium alloy special-shaped part
JP3475707B2 (en) Method and apparatus for semi-solid injection molding of metal
CN104841908B (en) A kind of Compound Extrusion casting method of aluminium alloy annulus
EP0710515B1 (en) Thixotropic forming process for wheels fashioned in rheocast metal alloy
CN107350453B (en) A kind of magnesium alloy casting semi solid-state Compound Extrusion casting and molding method
JP2004223610A (en) Method for manufacturing die cast product and apparatus for manufacturing the same
CN1039103C (en) Method and apparatus for extruding and casting aluminium alloy vehicle wheel
JP2004538145A (en) System for continuously supplying molten metal under pressure and method for producing continuous metal molded product
CN201720411U (en) Die-casting die provided with local pressing device
CN103302264B (en) High-density die-casting molding method for an aluminium alloy cast of hydraulic brake pump casing body of an automobile
CN201147834Y (en) Cast die having secondary extrusion mechanism

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
DD01 Delivery of document by public notice

Addressee: Zhi Qianming

Document name: the First Notification of an Office Action

GR01 Patent grant
GR01 Patent grant