CN1229014A - Indirect liquid extrusion casting technology and its mould - Google Patents
Indirect liquid extrusion casting technology and its mould Download PDFInfo
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- CN1229014A CN1229014A CN 98110716 CN98110716A CN1229014A CN 1229014 A CN1229014 A CN 1229014A CN 98110716 CN98110716 CN 98110716 CN 98110716 A CN98110716 A CN 98110716A CN 1229014 A CN1229014 A CN 1229014A
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- counterdie
- mould
- aspirating hole
- barrel
- patrix
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Abstract
A casting technology by indirect extruding of molten metal features that a vacuumizing step is additionally used on the basis of indirect liquid-state extruding. A special set of dies is designed, which has vacuumizing slots around the moulding cavity on the parting faces of upper and lower dies. Said slot has a longitudinal and a transverse air-pumping holes to connect with vacuum system via tubes. A valve rod is arranged in longitudinal hole, which can cooperate with the rod of demoulding plate in order to synchronize the vacuumizing with the opening or closing of dies. Its advantages are simple technology, easy operation and eliminating pinhole in castings to increase the qualified rate to 99% or more.
Description
The present invention relates to metal liquid extrusion casint moulding process and used mould thereof.
Up to now, die casting is a kind of common method that various foundry goods adopts of making, yet only suitable those walls of die casting are thin, wall thickness is even, and the less demanding foundry goods of mechanical performance.Because extrusion process is to adopt special-purpose die casting machine, by the barrel liquid injection hole liquid metal injection is sprayed into moulding in the closed mold cavity.The foundry goods inside of Sheng Chaning has a large amount of pores in this way, can not heat-treat foundry goods and improve its mechanical performance.For reducing pore, the someone adopts the method that vacuumizes, still, because before the injection, die cavity communicates with atmosphere by the barrel liquid injection hole, thus can not vacuumize immediately, and also the speed of injection is very fast, gives to vacuumize and brings great difficulty.
Liquid extrusion casting technology is a kind of than new technology after the extrusion process, and it does not need special-purpose die casting machine, is earlier liquid metal to be injected mould, form with the vertical hydraulic press extruding then, so, foundry goods dense internal organization, mechanical performance even can be near forging.TUBE BY LIQUID EXTRUSION can be divided two kinds of direct extruding and indirect extrusion, and directly extruding is after liquid metal injects the counterdie die cavity, and so the patrix that closes forms by the direct liquid towards metal extruding of the plunger that is provided with on the upper die mold, then the foundry goods pore-free of gained.But this method can not be made complex-shaped foundry goods.Indirect extrusion can be made complex-shaped foundry goods, before the extruding, liquid metal is injected the barrel of counterdie, patrix then closes, with being arranged on the liquid towards metal extruding that makes progress of plunger in the counterdie barrel, because the complexity of this class foundry goods shape causes the also complexity of ten minutes of the interior die cavity of mould, in the time of in liquid metal is extruded to mold cavity, part air in the die cavity has also been gone in the liquid metal by wrapped folder unavoidably, the air that these wrapped folders are gone in the liquid metal is to discharge by the air discharge duct on mould, and the cooling back forms pore in foundry goods.Do not form a large amount of pores though do not resemble the foundry goods that extrusion process produces, influence casting quality yet, foundry goods often after machining or heat treatment with regard to subscription rate, scrappage is up to 20% sometimes.Though in terms of overall, indirect extrusion casting is a kind of to be suitable for casting needs heat treatment and wall unevenness even, and shape is a kind of technology of complicated foundry goods, is still and reduces cost the key that improves the quality but eliminate pore.
The objective of the invention is to seek a kind of can cast pore-free, complex-shaped, wall unevenness even, good mechanical property, the casting and molding method that is fit to heat treated foundry goods and the mould that is adopted thereof.
In order to achieve the above object, the present invention realizes by the mould that increases vacuum pumping method and suitable this method thereof on the indirect extrusion casting basis.
Processing step of the present invention is: at first clear up mould, coating release agent, fluid injection attitude metal in the barrel in counterdie then, again patrix is combined on the counterdie, then the air in the mold cavity is taken away by vacuum system, do upwards extruding action by the plunger liquid towards metal that is arranged in the counterdie barrel again, foundry goods is got in last die sinking.
For realizing above-mentioned technology; the mould that ad hoc meter is following; it comprises patrix, and counterdie has the barrel that communicates with mold cavity at counterdie; be provided with plunger in the barrel; its design feature is: on the die joint of patrix or counterdie, also be provided with the groove of bleeding that communicates with die cavity by air discharge duct round die cavity, also be provided with vertical aspirating hole and each one of horizontal aspirating hole of intercommunication on the groove of bleeding; laterally aspirating hole is connected with the pumped vacuum systems of peripheral hardware by an exhaust tube, so that before extruding die cavity is vacuumized.In vertical aspirating hole, also be provided with one with patrix on demoulding top board on the valve rod that is connected of push rod, the push rod on valve rod and the demoulding top board links, during the demoulding, push rod is downward, valve rod is also downward, has blocked the passage of vacuum system and mold cavity, during matched moulds, push rod upwards, valve rod also makes progress, and laterally aspirating hole is unimpeded, and the passage of vacuum system and mold cavity is opened, the passage that makes vacuum system according to this is automatic shutter as required, does not need manual operations.
Advantage of the present invention is:
1. increased vacuumize step after, the defective of bleb is eliminated substantially, has improved the quality of foundry goods greatly, the qualification rate that makes foundry goods has very big economic benefit up to more than 99%.
2. compare with original indirect extrusion casting, the master-plan of mould of the present invention and constant has just increased round die cavity and bleed groove and the aspirating hole that are connected with the pumped vacuum systems of peripheral hardware, so die cost of the present invention is cheap, processing is simple.
3. the vertically interior valve rod that is provided with of aspirating hole and the interlock of demoulding top board, making to vacuumize becomes automation, compares with original technology, does not increase labour intensity.
4. compare with die casting, possess the condition that vacuumizes owing to formed behind material feeding and the matched moulds, so before extruding, can comparatively at leisure the air in the die cavity be taken out.Reach desirable effect.Make the present invention have processing ease, produce stable advantage.
Description of drawings:
Fig. 1. be process flow diagram of the present invention
Fig. 2. be mould schematic diagram of the present invention
Fig. 3. for the A-A of mould of the present invention to schematic diagram
In conjunction with the accompanying drawings mould of the present invention and casting technique thereof are further described.
Mould comprises patrix 15, and counterdie 16 has the barrel 11 that communicates with mold cavity 9 at counterdie 16, and the plunger 12 that is connected with hydraulic press is arranged in the barrel 11, and patrix 15 is connected with hydraulic press moved cross beam 14, is provided with depanning top board 6 and push rod 13 that the foundry goods depanning is used in the patrix 15.
At first on the die joint of the patrix 15 of mould or counterdie 16, process annular bleed groove 7, and, be interconnected between die cavity 9 and the barrel 11 by plurality of rows air drain 8 groove 7 of will bleeding round die cavity 9 and barrel 11; In the groove 7 of bleeding of patrix 15, be provided with vertical aspirating hole 4 that a vertical direction that staggers with air discharge duct 8 positions runs through patrix 15, vertically also be provided with the valve rod 5 that links by the push rod on the depanning top board 6 13 in the aspirating hole 4, the horizontal direction of patrix 15 also is provided with horizontal aspirating hole 3 and vertical aspirating hole 4 UNICOMs, laterally connects with exhaust tube 2 between aspirating hole 3 and the pumped vacuum systems 1; Counterdie 16 is installed on the lower platform 17 of vertical hydraulic press, plunger 12 is positioned at the barrel 11 of counterdie 16, then, cleaning patrix 15 and counterdie 16, the brushing releasing agent adds liquid metal in the barrel 11, descending after counterdie 16 closures patrix 15, extruding road 10, die cavity 9 in mould, have been formed by barrel 11, air discharge duct 8, the groove 7 of bleeding, vertical aspirating hole 4, the laterally confined space that constitutes of aspirating hole 3.Then start vacuum system 1, by exhaust tube 2 gas of above-mentioned seal cavity is taken out, start hydraulic press then immediately and make upwards extruding of plunger 12, liquid metal in the barrel 11 is pressed in the die cavity 9 by extruding road 10, make metal under high pressure vacuum, form the imperforate foundry goods of interior solid that is limited by die cavity 9 shapes, at last, open patrix 15 and make it up, the push rod 13 that pull on 6 on depanning top ejects foundry goods, valve rod 5 in the vertical aspirating hole 4 that is connected with depanning top board 6 simultaneously falls automatically with horizontal aspirating hole 3 sealings, inductor on the vacuum system 1 stops to vacuumize automatically, takes out foundry goods, finishes a casting technique step.And then get back to first step cleaning mould, brushing releasing agent etc. repeats same process sequence.Just, during matched moulds, it is up that valve stalk 5 is followed push rod 13, opened horizontal aspirating hole 3, and during die sinking, it is descending that valve stalk 5 is followed push rod 13, sealed horizontal aspirating hole 3, reaches the effect that automation vacuumizes.
Claims (3)
1. indirect liquid extrusion casting technology, it is characterized in that: at first clear up mould, coating release agent, barrel (11) fluid injection attitude metal in counterdie (16) then, again patrix (15) is combined on the counterdie (16), then by vacuum system (1) air in the mold cavity (9) is taken away, and then by the plunger (12) in the barrel (11) that is arranged on counterdie (16) liquid metal in the mould is done upwards extruding action, foundry goods is got in last die sinking.
2. mould that indirect liquid extrusion casting technology is used, it comprises patrix (15), counterdie (16), the barrel (11) that communicates with die cavity (9) is arranged in the counterdie (16), be provided with plunger (12) in the barrel (11), it is characterized in that: on the die joint of patrix (15) or counterdie (16), be provided with the groove of bleeding (7) that communicates with die cavity (9) by air discharge duct (7) round die cavity (9), the bleed vertical aspirating hole (4) that also is provided with intercommunication on the groove (7) and horizontal each one of aspirating hole (3), laterally aspirating hole (3) is connected by exhaust tube (2) with the vacuum system (1) of peripheral hardware.
3. mould according to claim 2, it is characterized in that: vertically also be provided with in the aspirating hole (4) one with demoulding top board (6) on the valve rod (5) that links of push rod (13), during die sinking, demoulding top board (6) is downward, and valve rod (5) is also downward, block horizontal aspirating hole (3), during matched moulds, demoulding top board (6) makes progress, and valve rod (5) also makes progress, open horizontal aspirating hole (3), realized the automation that vacuumizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98110716A CN1064288C (en) | 1998-03-17 | 1998-03-17 | Indirect liquid extrusion casting technology and its mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98110716A CN1064288C (en) | 1998-03-17 | 1998-03-17 | Indirect liquid extrusion casting technology and its mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1229014A true CN1229014A (en) | 1999-09-22 |
| CN1064288C CN1064288C (en) | 2001-04-11 |
Family
ID=5220740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98110716A Expired - Fee Related CN1064288C (en) | 1998-03-17 | 1998-03-17 | Indirect liquid extrusion casting technology and its mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1064288C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093447C (en) * | 2000-09-27 | 2002-10-30 | 张有明 | Processing art and mould for nonmetal type liquid forging or extruding casting formation |
| CN101912956A (en) * | 2010-08-26 | 2010-12-15 | 中国船舶重工集团公司第十二研究所 | Rotary structure mold of complicated curved-surface component and stripping/closing method thereof |
| CN101564766B (en) * | 2008-09-28 | 2011-02-02 | 福建工程学院 | Oriented time-sequence air-suction method for casting mould |
| CN102284693A (en) * | 2010-06-18 | 2011-12-21 | 株式会社东芝 | Vacuum casting die and vacuum casting method |
| CN103008610A (en) * | 2012-12-18 | 2013-04-03 | 华南理工大学 | Squeeze casting method of zinc alloy worm gear |
| CN103949604A (en) * | 2014-05-12 | 2014-07-30 | 东莞市闻誉实业有限公司 | Pure-aluminum die-casting method |
| CN104815974A (en) * | 2015-04-21 | 2015-08-05 | 同济大学 | Liquid metal forging device and application method thereof |
| CN109277525A (en) * | 2018-10-22 | 2019-01-29 | 瑞安市亚泰铜带厂 | The mold and casting method of casting copper artware |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095653A (en) * | 1993-05-24 | 1994-11-30 | 丰达雷斯，F·霍德勒有限公司 | Die cast assembly with breather valve |
| CN1100979A (en) * | 1993-10-01 | 1995-04-05 | 欧阳明 | Vacuum die casting machine |
-
1998
- 1998-03-17 CN CN98110716A patent/CN1064288C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093447C (en) * | 2000-09-27 | 2002-10-30 | 张有明 | Processing art and mould for nonmetal type liquid forging or extruding casting formation |
| CN101564766B (en) * | 2008-09-28 | 2011-02-02 | 福建工程学院 | Oriented time-sequence air-suction method for casting mould |
| CN102284693A (en) * | 2010-06-18 | 2011-12-21 | 株式会社东芝 | Vacuum casting die and vacuum casting method |
| CN102284693B (en) * | 2010-06-18 | 2013-05-29 | 株式会社东芝 | Vacuum casting die and vacuum casting method |
| CN101912956A (en) * | 2010-08-26 | 2010-12-15 | 中国船舶重工集团公司第十二研究所 | Rotary structure mold of complicated curved-surface component and stripping/closing method thereof |
| CN103008610A (en) * | 2012-12-18 | 2013-04-03 | 华南理工大学 | Squeeze casting method of zinc alloy worm gear |
| CN103008610B (en) * | 2012-12-18 | 2015-05-27 | 华南理工大学 | Squeeze casting method of zinc alloy worm gear |
| CN103949604A (en) * | 2014-05-12 | 2014-07-30 | 东莞市闻誉实业有限公司 | Pure-aluminum die-casting method |
| CN103949604B (en) * | 2014-05-12 | 2016-07-06 | 东莞市闻誉实业有限公司 | Fine aluminium pressure casting method |
| CN104815974A (en) * | 2015-04-21 | 2015-08-05 | 同济大学 | Liquid metal forging device and application method thereof |
| CN109277525A (en) * | 2018-10-22 | 2019-01-29 | 瑞安市亚泰铜带厂 | The mold and casting method of casting copper artware |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1064288C (en) | 2001-04-11 |
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