CN1876279A - Process for casting air conditioner compressor cylinder body and lid blank - Google Patents
Process for casting air conditioner compressor cylinder body and lid blank Download PDFInfo
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- CN1876279A CN1876279A CN 200610052157 CN200610052157A CN1876279A CN 1876279 A CN1876279 A CN 1876279A CN 200610052157 CN200610052157 CN 200610052157 CN 200610052157 A CN200610052157 A CN 200610052157A CN 1876279 A CN1876279 A CN 1876279A
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Abstract
The invention discloses a process of casting cylinder and cylinder head blank for vehicle-mounted compressor, comprising: metal mould matching; shaping aluminum alloy liquid by bottom casting; discharging gas in cave through casting head of casting mold; forcing pressure of 80-100 Mpa to liquid in casting mold from pouring cap and casting head with presser when liquid is semi-coagulation; keeping pressure until coagulation and cooling; releasing, opening mold and getting blank. There is no air cavity in prepared cylinder and cylinder head blank, the quality of each section is the same, which saves dip treating for no leakage, and the total production cost is reduced.
Description
Technical field
The present invention relates to the cylinder body of Vehicular air-conditioner compressor, the casting technique of cylinder cap blank.
Background technology
Vehicular air-conditioner compressor is weight reduction, generally adopts silumin material cast casing at present.This shell is made up of front-bank rotor housing, rear-bank rotor housing, front end housing, back cylinder cover.Since be thin-wall part, complex structure, and size, shape, surface quality require high, all adopt high-pressure casting.When yet this casting method aluminium water injected die cavity, the gas in the chamber was difficult for discharging.The aluminium water of being close to the mould wall cools off fast, forms compacted zone (foundry goods top layer just), and its dense layer thickness is generally in 0.8 millimeter; Undischarged gas is distributed in foundry goods inside by the high pressure crushing, causes tissue looseness.Therefore must strict control allowance, increased difficulty of processing, also must adopt organic dipping to guarantee its air-tightness simultaneously, so not only increased the manufacturing cost of cylinder body, cylinder cap, and flooded the operation meeting environment is caused certain influence.
Summary of the invention
At the deficiency that above-mentioned prior art exists, the object of the present invention is to provide a kind of pore-free or almost pore-free, interior solid do not need to remake the Vehicular air-conditioner compressor cylinder body that impregnation process just can reach the air-tightness requirement, the New Casting Technique of cylinder cap blank.
The present invention has adopted die cast and compression casting process combined method.This process comprises: operations such as metal mold matched moulds, cast, the demoulding, reposefully aluminium liquid is injected the sprue gate during cast, aluminium liquid fills type by the casting mold bottom, gas is discharged through the rising head on casting mold top in the die cavity, when the aluminium liquid after filling type is in half curdled appearance, from rising head, sprue gate the aluminium liquid in the casting mold is applied the pressure of 80～100Mpa with forcing press, pressurize is to solidifying, cool off, last release, die sinking, taking-up blank.
Because the process that the present invention has adopted die cast and compression casting to organically combine, make cylinder body, cylinder cap blank both keep metal pattern and do not have the sufficient characteristics of exhaust when being cast in cast of pressing, have the hard-packed characteristics of compression casting again, thereby casting quality is greatly improved, any cross section quality state is identical, the processed finished products rate improves, do not need to do impregnation process and just can reach nothing leakage requirement, avoided the pollution of dipping, simultaneously the manufacturing overall cost of cylinder body, the cylinder cap 4 yuan/kg that can descend to environment.
The specific embodiment
Casting air conditioner compressor cylinder body, cylinder cap blank, adopt following process:
1, matched moulds: adopt bottom gating, rising head is opened at the casting mold top, and the casting mold inner surface is coated the releasing agent matched moulds.When using first, be to the metal mold preheating, its temperature is 120～180 ℃, when using continuously, because of having surplus heat, needn't be again to its preheating;
2, cast: can adopt manual mode steadily to inject the sprue gate silumin liquid of fusion, liquation fills type to rising head by the casting mold bottom;
3, pressurization: the silumin liquid after filling type promptly applies the pressure of 80～100Mpa simultaneously to cast gate, rising head with the fore-set of hydraulic press when its dead head is half curdled appearance, pressurize is to solidifying, cooling off;
4, the demoulding: hydraulic press return, die sinking, taking-up blank.
The cylinder body that makes with above-mentioned process, the cylinder cap blank, owing to adopted bottom filling steadily to pour into a mould, gas in the casting mold is drained, liquation after filling type is during near half curdled appearance, watering again, rising head applies the long period, the pressure that the specific pressure casting is high several times, not only eliminated the shrinkage cavity in the process of setting, shrinkage porosite, each crystal pitch in the process of setting is dwindled, make the quality state in any cross section of foundry goods identical, compact structure just can not reach nothing leakage requirement thereby do not need to do impregnation process, avoid the pollution of impregnation process, and make cylinder body environment, the cost of cylinder cap manufacturing obviously descends.
Claims (1)
1, the process of a kind of casting air conditioner compressor cylinder body, cylinder cap blank, comprise operations such as metal mold matched moulds, cast, the demoulding, it is characterized in that: during cast, reposefully molten aluminium alloy is injected the sprue gate, the rising head of gas through casting mold top in the die cavity discharges, when the molten aluminium alloy after filling type is half curdled appearance, promptly from cast gate and rising head the molten aluminium alloy in the casting mold is applied the pressure of 80～100Mpa with forcing press, pressurize is to solidifying, cool off, last release, die sinking, taking-up blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610052157 CN1876279A (en) | 2006-06-27 | 2006-06-27 | Process for casting air conditioner compressor cylinder body and lid blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610052157 CN1876279A (en) | 2006-06-27 | 2006-06-27 | Process for casting air conditioner compressor cylinder body and lid blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1876279A true CN1876279A (en) | 2006-12-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610052157 Pending CN1876279A (en) | 2006-06-27 | 2006-06-27 | Process for casting air conditioner compressor cylinder body and lid blank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1876279A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102463340A (en) * | 2010-11-15 | 2012-05-23 | 贵州安吉航空精密铸造有限责任公司 | Method for improving metallurgical quality of cast |
| CN102649220A (en) * | 2011-02-25 | 2012-08-29 | 李永达 | Manufacturing method of large-scale reciprocating type refrigeration compressor |
| CN102896291A (en) * | 2012-10-09 | 2013-01-30 | 广州金邦有色合金有限公司 | Front cover of car air conditioner compressor FS170C and casting method of front cover |
| CN110630585A (en) * | 2019-10-11 | 2019-12-31 | 常熟市徐润机电有限公司 | Pneumatic device |
-
2006
- 2006-06-27 CN CN 200610052157 patent/CN1876279A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102463340A (en) * | 2010-11-15 | 2012-05-23 | 贵州安吉航空精密铸造有限责任公司 | Method for improving metallurgical quality of cast |
| CN102649220A (en) * | 2011-02-25 | 2012-08-29 | 李永达 | Manufacturing method of large-scale reciprocating type refrigeration compressor |
| CN102896291A (en) * | 2012-10-09 | 2013-01-30 | 广州金邦有色合金有限公司 | Front cover of car air conditioner compressor FS170C and casting method of front cover |
| CN110630585A (en) * | 2019-10-11 | 2019-12-31 | 常熟市徐润机电有限公司 | Pneumatic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20061213 |