CN102784901A - Pressure casting and extrusion molding process for pump body of automotive diesel injection pump - Google Patents
Pressure casting and extrusion molding process for pump body of automotive diesel injection pump Download PDFInfo
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- CN102784901A CN102784901A CN2012102784832A CN201210278483A CN102784901A CN 102784901 A CN102784901 A CN 102784901A CN 2012102784832 A CN2012102784832 A CN 2012102784832A CN 201210278483 A CN201210278483 A CN 201210278483A CN 102784901 A CN102784901 A CN 102784901A
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Abstract
The invention relates to a pressure casting and extrusion molding process for a pump body of an automotive diesel injection pump, which comprises the steps of die assembly, die pre-heating, injection, filling, pressurization, pressure maintenance, solidification and die opening to take a workpiece. The pre-heating temperature is 180-220 DEG C in the step of die pre-heating; the time is 2-3 seconds and the pressure is 13-16MPa during injection; the time is 1-2 second(s) and the pressure is 13-16MPa during filling; the time is 20 seconds and the pressure is 25-30MPa during pressurization; the time is 20-35 seconds during solidification; the pouring temperature of molten aluminum is 620-680 DEG C; the continuous working temperature of a die is 200-220 DEG C; and the system pressure is 14-16MPa. The traditional pouring in manufacturing is changed into pressure casting, and the production efficiency is greatly improved from original 8-10 minutes for production of per workpiece to 2-2.5 minutes; the rate of qualified products is greatly improved and is more than 95 percent; the process yield is about one fifth higher than the process yield of original pouring (the consumption of raw materials is reduced by one fifth); and the product is attractive in appearance and the surface quality of the product is improved significantly.
Description
Technical field
The present invention relates to a kind of extrusion process, particularly a kind of motor vehicle diesel oil jet pump body die casting extrusion forming process.
Background technology
Die casting is a kind of method of casting liquid forging.The compression mod forging process is a kind of technology of on the die casting die forging machine of special use, accomplishing.Its basic craft course is: molten metal elder generation's low speed or high-speed casting fill in the die cavity of type progressive die tool; Mould has movable cavity surface; It had both eliminated the shrinkage porosity defect of contraction cavity of blank along with the cooling procedure pressurization of molten metal is forged, and also made the interior tissue of blank reach the broken crystal grain of forging attitude.The comprehensive mechanical performance of blank is significantly improved.
At present, the motor vehicle diesel oil jet pump body all be to adopt the mode of cast to make, this kind production technology mode mainly has problems:
1, production efficiency was produced a product in low about 8～10 minutes;
2, product percent of pass is low, and general qualification rate is about 80%;
3, product yield is low, and the thick big Heavy Weight of rising head causes scaling loss to increase;
4, the outer quality view of product is poor;
5, production environment is abominable.
Summary of the invention
The object of the present invention is to provide a kind of motor vehicle diesel oil jet pump body die casting extrusion forming process, use the mode of die casting to produce, thoroughly changed the production technology of product, improve the quality of product, reduce cost.
For achieving the above object; Technical scheme of the present invention is: motor vehicle diesel oil jet pump body die casting extrusion forming process; Comprise matched moulds, mould and die preheating, injection, fill type, supercharging, pressurize, solidify and die sinking pickup step, preheat temperature is 180 ℃～220 ℃ in the said mould and die preheating step; Wherein the injection time is 2～3 seconds, pressure 13 MPa～16MPa; Filling time 1～2 second, pressure 13 MPa～16MPa; Pressurization time is 20 seconds, pressure 25 MPa～30MPa; Setting time is 20～35 seconds; Wherein aluminium liquid is built 620 ℃～680 ℃ of temperature, 200 ℃～220 ℃ of mould continuous operation temperature, system pressure 14 MPa～16MPa.
When adopting technique scheme, change traditional manufacturing of building into the die casting manufacturing, production efficiency improves greatly, produces one by original per 8～10 minutes and has brought up to one of production in per 2～2.5 minutes; Product percent of pass increases substantially, and product percent of pass is more than 95%; Product yield has improved about 1/5 (required raw material lack use 1/5) than former cast; Product appearance is beautiful attractive in appearance, and surface quality improves a lot; Production environment is improved (the core the inside had much like the resinae chemical substance when cast was produced, and had pungent taste) greatly.
The specific embodiment
Motor vehicle diesel oil jet pump body die casting extrusion forming process of the present invention comprises matched moulds, mould and die preheating, injection, fills type, supercharging, pressurize, solidifies and die sinking pickup step, and preheat temperature is 180 ℃～220 ℃ in the said mould and die preheating step; Wherein the injection time is 2～3 seconds, pressure 13 MPa～16MPa; Filling time 1～2 second, pressure 13 MPa～16MPa; Pressurization time is 20 seconds, pressure 25 MPa～30MPa; Setting time is 20～35 seconds; Wherein aluminium liquid is built 620 ℃～680 ℃ of temperature, 200 ℃～220 ℃ of mould continuous operation temperature, system pressure 14 MPa～16MPa.
Change traditional manufacturing of building into the die casting manufacturing, production efficiency improves greatly, produces one by original per 8～10 minutes and has brought up to one of production in per 2～2.5 minutes; Product percent of pass increases substantially, and product percent of pass is more than 95%; Product yield has improved about 1/5 (required raw material lack use 1/5) than former cast; Product appearance is beautiful attractive in appearance, and surface quality improves a lot; Production environment is improved (the core the inside had much like the resinae chemical substance when cast was produced, and had pungent taste) greatly.
Above-described only is preferred implementation of the present invention; Should be understood that; For a person skilled in the art, under the prerequisite that does not break away from structure of the present invention, can also make some distortion and improvement; These also should be regarded as protection scope of the present invention, and these can not influence effect and practical applicability that the present invention implements.
Claims (1)
1. motor vehicle diesel oil jet pump body die casting extrusion forming process comprises matched moulds, mould and die preheating, injection, fills type, supercharging, pressurize, solidifies and die sinking pickup step, it is characterized in that preheat temperature is 180 ℃～220 ℃ in the said mould and die preheating step; Wherein the injection time is 2～3 seconds, pressure 13 MPa～16MPa; Filling time 1～2 second, pressure 13 MPa～16MPa; Pressurization time is 20 seconds, pressure 25 MPa～30MPa; Setting time is 20～35 seconds; Wherein aluminium liquid is built 620 ℃～680 ℃ of temperature, 200 ℃～220 ℃ of mould continuous operation temperature, system pressure 14 MPa～16MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102784832A CN102784901A (en) | 2012-08-07 | 2012-08-07 | Pressure casting and extrusion molding process for pump body of automotive diesel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102784832A CN102784901A (en) | 2012-08-07 | 2012-08-07 | Pressure casting and extrusion molding process for pump body of automotive diesel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102784901A true CN102784901A (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102784832A Pending CN102784901A (en) | 2012-08-07 | 2012-08-07 | Pressure casting and extrusion molding process for pump body of automotive diesel injection pump |
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| CN (1) | CN102784901A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075224A (en) * | 2013-01-18 | 2013-05-01 | 无锡市贝尔机械有限公司 | Machine oil cooler body and casting technique thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0732119A (en) * | 1993-07-20 | 1995-02-03 | Kobe Steel Ltd | High pressure casting method |
| RU2234392C2 (en) * | 2002-08-26 | 2004-08-20 | Караник Юрий Апполинарьевич | Method for casting by squeezing with crystallization under pressure and apparatus for performing the same |
| CN101497121A (en) * | 2008-01-31 | 2009-08-05 | 上海爱仕达汽车零部件有限公司 | Diesel motor aluminium alloy cylinder metal mould low-pressure casting method |
| CN101708544A (en) * | 2009-12-11 | 2010-05-19 | 重庆佰坛机械制造有限公司 | Process for low pressure casting and forming fuel common-rail jet pump of diesel engine |
| CN202010775U (en) * | 2011-04-20 | 2011-10-19 | 浙江浩龙风机有限公司 | Die casting die for aluminum alloy centrifugal blower fan impeller |
| CN102363211A (en) * | 2011-10-10 | 2012-02-29 | 陈伟军 | Extrusion casting method for aluminum alloy automobile speed changing box shell |
| CN102581256A (en) * | 2012-01-13 | 2012-07-18 | 江苏华威线路设备集团有限公司 | Aluminum alloy liquid die forging manufacturing process for parts of electrified high-speed railway contact nets |
-
2012
- 2012-08-07 CN CN2012102784832A patent/CN102784901A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0732119A (en) * | 1993-07-20 | 1995-02-03 | Kobe Steel Ltd | High pressure casting method |
| RU2234392C2 (en) * | 2002-08-26 | 2004-08-20 | Караник Юрий Апполинарьевич | Method for casting by squeezing with crystallization under pressure and apparatus for performing the same |
| CN101497121A (en) * | 2008-01-31 | 2009-08-05 | 上海爱仕达汽车零部件有限公司 | Diesel motor aluminium alloy cylinder metal mould low-pressure casting method |
| CN101708544A (en) * | 2009-12-11 | 2010-05-19 | 重庆佰坛机械制造有限公司 | Process for low pressure casting and forming fuel common-rail jet pump of diesel engine |
| CN202010775U (en) * | 2011-04-20 | 2011-10-19 | 浙江浩龙风机有限公司 | Die casting die for aluminum alloy centrifugal blower fan impeller |
| CN102363211A (en) * | 2011-10-10 | 2012-02-29 | 陈伟军 | Extrusion casting method for aluminum alloy automobile speed changing box shell |
| CN102581256A (en) * | 2012-01-13 | 2012-07-18 | 江苏华威线路设备集团有限公司 | Aluminum alloy liquid die forging manufacturing process for parts of electrified high-speed railway contact nets |
Non-Patent Citations (1)
| Title |
|---|
| 欧阳明: ""挤压压铸技术在汽车、摩托车精密铸件上的应用"", 《铸造技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075224A (en) * | 2013-01-18 | 2013-05-01 | 无锡市贝尔机械有限公司 | Machine oil cooler body and casting technique thereof |
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Application publication date: 20121121 |