CN105880508B - A kind of vacuum high-pressure casting method and device - Google Patents
A kind of vacuum high-pressure casting method and device Download PDFInfo
- Publication number
- CN105880508B CN105880508B CN201410192341.3A CN201410192341A CN105880508B CN 105880508 B CN105880508 B CN 105880508B CN 201410192341 A CN201410192341 A CN 201410192341A CN 105880508 B CN105880508 B CN 105880508B
- Authority
- CN
- China
- Prior art keywords
- vacuum
- melt
- depositing
- evacuation passageway
- drift
- 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
Links
- 238000005266 casting Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000000151 deposition Methods 0.000 claims abstract description 20
- 238000002955 isolation Methods 0.000 claims abstract description 5
- 238000007711 solidification Methods 0.000 claims abstract description 5
- 230000008023 solidification Effects 0.000 claims abstract description 5
- 238000010791 quenching Methods 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims abstract 2
- 238000005429 filling process Methods 0.000 claims description 8
- 239000000155 melt Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000003973 paint Substances 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 8
- 229910001234 light alloy Inorganic materials 0.000 description 5
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Devices For Molds (AREA)
Abstract
The present invention relates to a kind of vacuum high-pressure casting method and device, it is constituted as shown in the figure.Its operation principle is：Before work, vacuum system enters the cast liquid level that working condition, melt are pumped to depositing；When starting casting, cleaning spraying rear mold matched moulds opens outer vacuum valve, type cavity gas is aspirated by small bore evacuation passageway；When die cavity vacuum reaches setting value, melt is inhaled into pressure chamber in drift pumpback, depositing；When melt amount reaches setting value in pressure chamber, drift reach isolation depositing and pressure chamber；After later on heavy in section evacuation passageway, rapid lifting die cavity vacuum to setting value, drift, which moves ahead, drives melt to fill type, and heavy in section evacuation passageway is then turned off；When type is filled in completion, small bore evacuation passageway is broken into the Quench solidification closing of melt, and outer vacuum valve is then turned off, terminates die cavity and vacuumize；After melt pressurize solidification in die cavity, die sinking pickup, drift return to the station of isolation depositing and pressure chamber, complete a casting technique circulation.
Description
Technical field
This patent is related to a kind of vacuum high-pressure casting method and device, is mainly used in realizing the totally-enclosed cast of light-alloy, keeps away
Exempt from the secondary pollution during melt cast；By dual evacuation passageway fast lifting mold cavity vacuum, and make it
Higher vacuum is kept in whole cavity filling process, for casting obtain can the technological quality of solid-solution and aging heat treatment technique is provided
Method and apparatus, belong to light-alloy casting forming field.
Background technology
Industrial relatively common pouring procedure is manipulator cast and constant displacement pump cast now, and melt is determined from molten bath
All it is to be transferred in open environment in the pressure chamber of casting machine after measuring out.Therefore, melt is just inevitable in casting process
Ground contacts with outside air or protective gas and produces oxide-film or diaphragm, causes to pour into a mould the melting loss of melt and secondary dirt
Dye, influences the technological quality of casting.Therefore, the sealed quantitative cast of cast melt is realized, is compeling for light-alloy high-pressure casting circle
Being essential will.
In the cavity filling process of light-alloy high-pressure casting, type melt is filled because type cavity gas are involved in, various die cavity gas are not only resulted in
Body causes the generation of defective workmanship, also make it that tissue and performance can not be improved by being heat-treated after casting forming, limits light-alloy
The making full use of of material property, cast properties are low.In order to eliminate the adverse effect of type cavity gas, high-pressure casting circle last century is just
The method of die-castingmold filling, i.e. vacuum high-pressure casting again after starting to research and develop and being vacuumized using mold cavity.To adapt to high-pressure casting
High speed, high-pressure process feature, at present common vacuum high-pressure casting mold cavity vacuum pumping method have following two class：
（1）Whole vacuum pumping method：To realize that filling type overall process is vacuumized, and type portion is finally filled using mold cavity is opened in
The small bore evacuation passageway of position（Such as：Tortuous, tooth form evacuation passageway）Die cavity is vacuumized, then by channel metal surface
Quench solidification intrusion melt（Such as：Tooth row evacuation passageway）, or utilize the inertia force shut-off evacuation passageway of high speed melt
（Such as：Inertia vacuum pumping valve）.In order to ensure evacuation passageway reliable turn-off, the evacuation passageway of whole vacuum pumping method all has
The narrow and small common geometric properties of channel cross-section.Within the limited pumpdown time, because narrow and small evacuation passageway is to type cavity gas
Outer row bring huge on-way resistance, die cavity vacuum lifting speed is relatively low, and be difficult to reach can be with for die cavity vacuum when filling type
Ensure the heat treatable ideal vacuum degree of casting.
（2）Half way vacuum pumping method：This method using melt fill type when mold cavity obtain high vacuum as demand, in mould
Die cavity finally fills type position and opens up heavy in section evacuation passageway（The high dynamic vacuum pumping method proposed such as applicant）, with casting machine collection
Speed and time are switched on and off into control passage, so as to stablize, preferable vacuumizing effect is promptly obtained in die cavity.
But, this method also face " lifting of die cavity vacuum is too fast, influences the quantitative accuracy of sealed cast " and " fill type latter stage it is remaining with
Gas leakage can be enriched with Filling Processes of Castings end, cause casting process quality decline " two problems.
The content of the invention
The present invention for now " melt from the casting process of pressure chamber is transferred in crucible, melt caused by surface oxidation
Melting loss and secondary pollution；Existing pumped vacuum systems is limited to the lifting of die cavity vacuum, and the casting of production is difficult to satisfaction can solid solution
The requirement of aging heat treatment technological quality；Vacuum is too high during forvacuum, into pressure chamber in melt amount be difficult to accurate control；It is whole
Condition of high vacuum degree is difficult to keep in individual cavity filling process " the problems such as, it is desirable to provide one kind eliminates melt melting loss and secondary in casting process
Pollution, exhaust capacity is strong, and forvacuum degree is low, and the condition of high vacuum degree of die cavity can be positively maintained in whole cavity filling process
Vacuum high-pressure casting system.
To achieve the above object, technical scheme is as follows：（See Fig. 1 and Fig. 2）
Vacuum system is ensured during work（1）Into working condition, depositing（8）And pressure chamber（6）It is tightly connected, melt in depositing
Liquid level all-the-time stable is maintained at drift before the position of slightly below depositing upper outlet, matched moulds（7）Station in closing cast gate；Matched moulds
Afterwards, outer vacuum valve is opened（2）, pass through the evacuation passageway of small bore（3）To die cavity forvacuum；When vacuum in mold cavity
Reach after sets requirement, drift pumpback, open melt in cast gate, depositing and be inhaled into pressure chamber under mold cavity vacuum action；When
Reach after sets requirement that drift reach closing cast gate terminates cast into pressure chamber melt amount；Then, heavy in section is opened to vacuumize
Passage（4）, fast lifting mold cavity vacuum；When mold cavity vacuum reaches setting value, drift is pressed before setting speed
Row driving cast melt filling die cavity, is filling before type melt arrives at heavy in section evacuation passageway, hydraulic-driven closes at a high speed big cut
Face evacuation passageway, fills type melt and is filling type latter stage intrusion small bore evacuation passageway, make in the Quench of vacuum passage metallic walls
Lower quick solidification is used, outer vacuum valve is simultaneously closed off, vacuumizing for mold cavity is terminated；Protected after mold filling pressure reaches setting value
Pressure, the melt in mold cavity solidify completely；After casting having been solidified in die cavity there is some strength, opening mold, take
Go out casting, drift returns to the station of isolation depositing and pressure chamber, opens next vacuum high-pressure casting process cycles.
It is of the invention to be had the following effects with existing pouring procedure and vacuum pumping method：
（1）Compared with other existing pouring procedures, melt all-the-time stable in depositing keeps certain liquid level to avoid
Flow back and forth, melt is sucked by vacuum in die cavity using totally-enclosed cast by die cavity, melt is effectively prevent in normal pouring
During the melting loss that occurs and secondary pollution；
（2）Compared to other existing vacuum pumping methods, using dual evacuation passageway, small bore evacuation passageway after matched moulds
The rough vacuum of setting is reached to die cavity forvacuum, melt is inhaled into die cavity under vacuum, be prevented effectively from traditional big
Section evacuation passageway die cavity vacuum is too high to cause the problem of pressure chamber melt soakage is difficult to accurate control；Cast is opened after terminating
Open the vacuum in the evacuation passageway fast lifting die cavity of heavy in section and close in time, melt fill type latter stage intrusion small bore take out
Vacuum passage, vacuumizes while outer vacuum valve closes termination, die cavity is all remain all the time in whole cavity filling process higher
Vacuum, effectively solve " existing pumped vacuum systems to die cavity vacuum lifted it is limited, the casting of production, which is difficult to satisfaction, to be consolidated
Condition of high vacuum degree is difficult to keep in molten aging heat treatment technological quality requirement, whole cavity filling process " the problems such as.
Brief description of the drawings
Fig. 1 is horizontal station operation principle schematic diagram, and Fig. 2 is vertical station operation principle schematic diagram.
Claims (7)
1. a kind of vacuum high-pressure casting method, it comprises the following steps：
Preparation process, starts vacuum system and makes it into working condition, drift reach closing cast gate, starts Melt Pump by Melt Pump
Enter depositing and by level stability in the setting position of slightly below depositing upper outlet；
Step 1, mold cavity cleaning, spray paint are completed, then matched moulds；
Step 2, outer vacuum valve is opened, the type cavity gas in mould are aspirated by small bore evacuation passageway；
Step 3, when vacuum reaches setting value in mold cavity, cast gate is opened in drift pumpback, and melt is in mould type in depositing
Pressure chamber is inhaled under chamber vacuum action；When the melt amount for entering pressure chamber reaches requirement, drift reach closing cast gate, termination is poured
Note；
Step 4, heavy in section evacuation passageway opens at a high speed under hydraulic coupling driving, lifts mold cavity vacuum rapidly, until
It reaches setting value；
Step 5, drift is moved ahead with setting speed, promotes the melt filling die cavity in pressure chamber, and heavy in section evacuation passageway exists immediately
Closed at a high speed under hydraulic-driven；
Step 6, type melt intrusion small bore evacuation passageway, and the solidification closing under the chilling action of vacuum passage metallic walls are filled
Small bore evacuation passageway, die cavity vacuum is terminated, and is then turned off outer vacuum valve；
Step 7, punch pressure completes to be promoted to peak rapidly with type is filled, and is solidified completely until filling type melt；
Step 8, after casting stays in mould and continues cool to and possess sufficient intensity, opening mold, casting is taken out, drift is retracted
To isolation depositing and the station of pressure chamber, a vacuum high-pressure casting process cycles are completed；
End step, when needing the long period to terminate vacuum high-pressure casting, closes vacuum system, closes in Melt Pump, depositing
Melt automatic back flow is in crucible molten bath.
2. vacuum high-pressure casting method according to claim 1, includes：Vacuum system（1）, outer vacuum valve（2）, vacuum
High-pressure casting mould（5）, heavy in section evacuation passageway（4）, small bore evacuation passageway（3）, pressure chamber（6）, drift（7）, depositing
（8）, Melt Pump（9）.
3. vacuum high-pressure casting method according to claim 2, it is characterised in that vacuum high-pressure casting mould（5）It is built-in
The heavy in section evacuation passageway of hydraulic-driven（4）The small bore evacuation passageway of closing is solidified with melt Quench（3）, two are taken out
Vacuum passage passes through vacuum pipe and outer vacuum valve（2）With vacuum system（1）It is tightly connected.
4. vacuum high-pressure casting method according to claim 2, it is characterised in that depositing（8）With pressure chamber（6）And Melt Pump
（9）It is tightly connected, Melt Pump remains that melt level stabilization is in depositing in whole high-pressure casting continuous flow procedure
The slightly below setting position of depositing upper outlet.
5. vacuum high-pressure casting method according to claim 2, it is characterised in that pass through small bore evacuation passageway（3）
Vacuumize and realize before vacuum pouring, pressure chamber（6）With depositing（8）By drift（7）Isolation, is wanted until the vacuum of mold cavity is met
Ask.
6. vacuum high-pressure casting method according to claim 2, it is characterised in that fill before type, is cut greatly by hydraulic-driven
Face evacuation passageway（4）Fast lifting mold cavity vacuum；In cavity filling process, pass through small bore evacuation passageway（3）Maintain
The vacuum of mold cavity.
7. vacuum high-pressure casting method according to claim 2, according to product structure, it can be on horizontal or vertical press
Implement, i.e., mould is in horizontally or vertically station；Meanwhile, enter the pouring technology poured using side or center according to product structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410192341.3A CN105880508B (en) | 2014-05-08 | 2014-05-08 | A kind of vacuum high-pressure casting method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410192341.3A CN105880508B (en) | 2014-05-08 | 2014-05-08 | A kind of vacuum high-pressure casting method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105880508A CN105880508A (en) | 2016-08-24 |
| CN105880508B true CN105880508B (en) | 2017-10-13 |
Family
ID=56999856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410192341.3A Active CN105880508B (en) | 2014-05-08 | 2014-05-08 | A kind of vacuum high-pressure casting method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105880508B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107186194A (en) * | 2017-07-20 | 2017-09-22 | 广东鸿图武汉压铸有限公司 | A kind of vacuum valve die casting Vacuuming structure in parallel with exhaustion plate |
| CN111344089A (en) * | 2017-09-11 | 2020-06-26 | 恩泰科-斯特拉康有限责任公司 | Wheel manufacturing method, casting mold and device |
| US12246375B2 (en) | 2017-09-11 | 2025-03-11 | Entec-Stracon Gmbh | Method, casting mold, and apparatus for producing a vehicle wheel |
| CN112548074A (en) * | 2019-09-26 | 2021-03-26 | 沈阳铸造研究所有限公司 | Pressure-regulating filling type high-pressure solidification casting device and casting method |
| CN113199008A (en) * | 2021-05-18 | 2021-08-03 | 重庆大学 | Vacuum low-pressure casting device and method for large aluminum and magnesium alloy castings |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4154285A (en) * | 1976-11-12 | 1979-05-15 | Koujiro Yamasaki | Gas release method in a metal mold |
| JPS5614066A (en) * | 1979-07-16 | 1981-02-10 | Yamazaki Kosakusho:Kk | Casting metal mold |
| JP2003220457A (en) * | 2002-01-25 | 2003-08-05 | Toshiba Mach Co Ltd | Die-casting machine and casting method |
| JP2005230879A (en) * | 2004-02-20 | 2005-09-02 | Toyota Motor Corp | Die casting apparatus and die casting method |
| CN102773448A (en) * | 2012-07-19 | 2012-11-14 | 重庆硕龙科技有限公司 | Vacuum die casting machine |
| CN103357851A (en) * | 2012-04-02 | 2013-10-23 | 东南精密株式会社 | High-vacuum die-casting method |
| JP2014034057A (en) * | 2012-08-10 | 2014-02-24 | Honda Motor Co Ltd | Vacuum casting apparatus and vacuum casting method |
-
2014
- 2014-05-08 CN CN201410192341.3A patent/CN105880508B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4154285A (en) * | 1976-11-12 | 1979-05-15 | Koujiro Yamasaki | Gas release method in a metal mold |
| JPS5614066A (en) * | 1979-07-16 | 1981-02-10 | Yamazaki Kosakusho:Kk | Casting metal mold |
| JP2003220457A (en) * | 2002-01-25 | 2003-08-05 | Toshiba Mach Co Ltd | Die-casting machine and casting method |
| JP2005230879A (en) * | 2004-02-20 | 2005-09-02 | Toyota Motor Corp | Die casting apparatus and die casting method |
| CN103357851A (en) * | 2012-04-02 | 2013-10-23 | 东南精密株式会社 | High-vacuum die-casting method |
| CN102773448A (en) * | 2012-07-19 | 2012-11-14 | 重庆硕龙科技有限公司 | Vacuum die casting machine |
| JP2014034057A (en) * | 2012-08-10 | 2014-02-24 | Honda Motor Co Ltd | Vacuum casting apparatus and vacuum casting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105880508A (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105880508B (en) | A kind of vacuum high-pressure casting method and device | |
| CN102950270B (en) | Multidirectional evacuating device for die-casting | |
| CN105414515B (en) | A kind of die casting mechanism of horizontal cold room vacuum die casting machine and the method using its progress die casting | |
| CN101274361B (en) | Low Speed Vacuum Squeeze Casting Process | |
| CN101927329B (en) | Vacuum high-pressure casting method | |
| CN108311658A (en) | Vacuum low speed pressure casting method | |
| CN104568343B (en) | A kind of vacuum die-casting mould vacuum detecting method | |
| CN202377511U (en) | Pouring passage system of automobile die-casting parts | |
| CN102717049A (en) | Method and device for realizing direct extrusion casting by utilizing closed mould pouring | |
| CN113634732A (en) | Horizontal high-vacuum die-casting system and die-casting method | |
| CN106925752A (en) | A kind of water-cooled low pressure casting die | |
| CN106694848A (en) | Pressure casting device and method | |
| CN216502263U (en) | Magnesium alloy casting and filling device | |
| CN204603266U (en) | A kind of exhaust gear of die casting | |
| KR102563484B1 (en) | Method for high-pressure die casting | |
| CN208408484U (en) | A kind of wheel hub casting mould with a plurality of running channel | |
| CN106694846A (en) | Multi-pouring-gate die-casting die | |
| JPS62230467A (en) | Forming mold for casting | |
| CN211101530U (en) | Novel pressure casting device | |
| CN208929169U (en) | Connector die casting | |
| CN205254096U (en) | Supporting quantitative gravity -assist pouring stove of continuous calciner | |
| CN209736588U (en) | Multifunctional automatic die-casting equipment | |
| CN206605020U (en) | Many runner die casting mold tools | |
| CN206561098U (en) | Die casting | |
| CN202343904U (en) | Vacuum air extractor cushioning structure of automobile die-casting part pouring channel system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |