CN105522134A - Mold-casting molding method of automobile generator end cover - Google Patents
Mold-casting molding method of automobile generator end cover Download PDFInfo
- Publication number
- CN105522134A CN105522134A CN201610088473.0A CN201610088473A CN105522134A CN 105522134 A CN105522134 A CN 105522134A CN 201610088473 A CN201610088473 A CN 201610088473A CN 105522134 A CN105522134 A CN 105522134A
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- CN
- China
- Prior art keywords
- end cover
- automobile generator
- mold
- die casting
- die
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/08—Cold chamber machines, i.e. with unheated press chamber into which molten metal is ladled
Abstract
The invention discloses a mold-casting molding method of an automobile generator end cover. The method comprises the following steps: (1) inspecting raw materials, a mold-casting machine and a mold; (2) preparing a mold cavity; (3) melting the raw materials; (4) injecting the raw materials into the mold cavity; (5) mold casting molding; (6) mold stripping and shaping. The surface of the automobile generator end cover has no cold shut, no crack and no peeling, and the casting characters are complete; the height of the round ejector pin print on the rabbet of the product is 0-0.5mm, the round ejector pin print of the inner cavity is lower than the low plane of the cavity by -0.5-0mm; and the end cover does not have sand bore. The cavity vacuumizing way is adopted, so as to effectively avoid defects due to incorporation of air, and the products do not have defects such as cold shut, sags and cracks, the surface quality is high, the comprehensive performance is excellent. In addition, the cycle period is short, and the production efficiency is effectively increased.
Description
Technical field
The present invention relates to auto parts and components preparing technical field, particularly relate to a kind of method of squeeze forming of end cover of automobile generator.
Background technology
In order to energy-saving and cost-reducing, minimizing toxic emission, improve and drive comfort level and mechanics of vehicles performance, present automobile is to lightweight future development.At present the main light alloy material that adopts makes some housing type parts of automobile and the larger functor of wall thickness in the mode of casting or Die Casting.
End cover of automobile generator comprises protecgulum and bonnet, its piece cover on automobile current generator, play anti-vibration protected, increase heat radiation and the effect such as dust-proof.But the product that the preparation method of existing end cover of automobile generator makes presents the defect in various degree such as cold shut, depression, crackle in outward appearance, occur that in inside the defect that pore, shrinkage cavity, pin hole etc. are fatal is unreasonable, have a strong impact on the serviceability of product, be not suitable for the instructions for use of automobile industry.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of method of squeeze forming of end cover of automobile generator, effectively can solve the problems referred to above that existing preparation method exists.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the method for squeeze forming providing a kind of end cover of automobile generator, comprises the steps:
(1) raw material, die casting machine and mould inspection;
(2) die cavity prepares: the assembling of the fixed half and moving half of end cover of automobile generator die casting, conjunction are touched, locked, and vacuumize;
(3) raw material melting: the raw material of aluminum alloy heating and melting be up to the standards in step (1) is become liquid material;
(4) chamber is rushed: the barrel liquid material in step (3) being proceeded to die casting machine is indoor, and injects described die cavity by drift from injection port;
(5) die cast: die casting cooling forming under certain Die Casting Condition;
(6) stripping forming.
In a preferred embodiment of the present invention, in described step (2), the vacuum in described die cavity is 0 ~ 0.05MPa.
In a preferred embodiment of the present invention, in described step (3), the temperature of described fused solution raw material is 620 ~ 660 DEG C.
In a preferred embodiment of the present invention, in described step (4), the condition that described drift extruding liquid material injects die cavity is: drift rotating speed 5 ~ 6r/s, drift advanced speed 800 ~ 1500m/s.
In a preferred embodiment of the present invention, in described step (5), described Die Casting Condition is: pressure 25 ~ 28MPa, dwell time 10 ~ 18s, cool time 4 ~ 6s.
In a preferred embodiment of the present invention, the circulation timei of described pressure casting method is 35 ~ 41s.
The invention has the beneficial effects as follows: the method for squeeze forming of a kind of end cover of automobile generator of the present invention, the mode adopting cavity to vacuumize, effectively avoids mixing air and causes defect, and institute's product that obtains is without defects such as cold shut, depression, crackles, surface quality is high, excellent combination property; In addition, cycle period of the present invention is short, effectively improves production efficiency.
Detailed description of the invention
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
The embodiment of the present invention comprises:
Embodiment 1
A method of squeeze forming for end cover of automobile generator, die casting machine used is with pumped vacuum systems, and pressure casting method is cold chamber die casting, concrete steps:
(1) adopt spectroanalysis instrument check and analyze the composition in raw material of aluminum alloy, the air-tightness of the pumped vacuum systems of inspection die casting machine, and check die surface performance;
(2) die cavity prepares: the assembling of the fixed half and moving half of end cover of automobile generator die casting, conjunction are touched, locked, and start pumped vacuum systems, takes out the air in most die cavity, make vacuum reach 0 ~ 0.05MPa;
(3) raw material melting: the raw material of aluminum alloy be up to the standards in step (1) is placed in and is independently heated to 620 ~ 640 DEG C in melting furnace and is melt into liquid material, be incubated for subsequent use;
(4) rush chamber: the barrel liquid material in step (3) being proceeded to die casting machine is indoor, liquid material, with the speed spiral rotating from 5r/s, is injected die cavity from the injection port constant speed of die cavity with the linear speed of 800m/s by die casting machine punch;
(5) die cast: rush behind chamber until liquid material, die casting machine keeps 18s with the pressure constant voltage of 25MPa, then pressure release cooling 4s; Die sinking subsequently, end cover of automobile generator is ejected from dynamic model by push rod.
Embodiment 2
A method of squeeze forming for end cover of automobile generator, die casting machine used is with pumped vacuum systems, and pressure casting method is cold chamber die casting, concrete steps:
(1) adopt spectroanalysis instrument check and analyze the composition in raw material of aluminum alloy, the air-tightness of the pumped vacuum systems of inspection die casting machine, and check die surface performance;
(2) die cavity prepares: the assembling of the fixed half and moving half of end cover of automobile generator die casting, conjunction are touched, locked, and start pumped vacuum systems, takes out the air in most die cavity, make vacuum reach 0 ~ 0.05MPa;
(3) raw material melting: the raw material of aluminum alloy be up to the standards in step (1) is placed in and is independently heated to 640 ~ 660 DEG C in melting furnace and is melt into liquid material, be incubated for subsequent use;
(4) rush chamber: the barrel liquid material in step (3) being proceeded to die casting machine is indoor, liquid material, with the speed spiral rotating from 6r/s, is injected die cavity from the injection port constant speed of die cavity with the linear speed of 1500m/s by die casting machine punch;
(5) die cast: rush behind chamber until liquid material, die casting machine keeps 10s with the pressure constant voltage of 28MPa, then pressure release cooling 6s; Die sinking subsequently, end cover of automobile generator is ejected from dynamic model by push rod.
The circulation timei that above-mentioned pressure casting method prepares end cover of automobile generator is 35 ~ 41s.
End cover of automobile generator prepared by said method, after testing, product surface without cold shut, flawless, without peeling, foundry goods character without incompleteness; The dome pin print at product tongue and groove place is highly 0 ~ 0.5mm, and the circular thimble print of inner chamber is lower than cavity low degree-0.5 ~ 0mm; Without sand hole.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. a method of squeeze forming for end cover of automobile generator, is characterized in that, comprises the steps:
(1) raw material, die casting machine and mould inspection;
(2) die cavity prepares: the assembling of the fixed half and moving half of end cover of automobile generator die casting, conjunction are touched, locked, and vacuumize;
(3) raw material melting: the raw material of aluminum alloy heating and melting be up to the standards in step (1) is become liquid material;
(4) chamber is rushed: the barrel liquid material in step (3) being proceeded to die casting machine is indoor, and injects described die cavity by drift from injection port;
(5) die cast: die casting cooling forming under certain Die Casting Condition;
(6) stripping forming.
2. the method for squeeze forming of end cover of automobile generator according to claim 1, is characterized in that, in described step (2), the vacuum in described die cavity is 0 ~ 0.05MPa.
3. the method for squeeze forming of end cover of automobile generator according to claim 1, is characterized in that, in described step (3), the temperature of described fused solution raw material is 620 ~ 660 DEG C.
4. the method for squeeze forming of end cover of automobile generator according to claim 1, is characterized in that, in described step (4), the condition that described drift extruding liquid material injects die cavity is: drift rotating speed 5 ~ 6r/s, drift advanced speed 800 ~ 1500m/s.
5. the method for squeeze forming of end cover of automobile generator according to claim 1, is characterized in that, in described step (5), described Die Casting Condition is: pressure 25 ~ 28MPa, dwell time 10 ~ 18s, cool time 4 ~ 6s.
6. the method for squeeze forming of end cover of automobile generator according to claim 1, is characterized in that, the circulation timei of described pressure casting method is 35 ~ 41s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610088473.0A CN105522134A (en) | 2016-02-17 | 2016-02-17 | Mold-casting molding method of automobile generator end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610088473.0A CN105522134A (en) | 2016-02-17 | 2016-02-17 | Mold-casting molding method of automobile generator end cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105522134A true CN105522134A (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610088473.0A Pending CN105522134A (en) | 2016-02-17 | 2016-02-17 | Mold-casting molding method of automobile generator end cover |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008229649A (en) * | 2007-03-19 | 2008-10-02 | Mitsui Mining & Smelting Co Ltd | Method for casting alloy, and die-cast member |
| CN101664795A (en) * | 2009-10-30 | 2010-03-10 | 哈尔滨吉星机械工程有限公司 | Method for manufacturing vehicle camshaft cover by semi-solid rheoforming |
| CN104878262A (en) * | 2015-05-18 | 2015-09-02 | 广东省工业技术研究院(广州有色金属研究院) | High-strength aluminum alloy and preparation method thereof |
| CN104903025A (en) * | 2012-10-17 | 2015-09-09 | 微软技术许可有限责任公司 | Metal alloy injection molding |
| CN105081263A (en) * | 2015-09-17 | 2015-11-25 | 高文梅 | Casting method for high-strength corrosion-resisting brake assisting vacuum pump casing |
| CN105215314A (en) * | 2015-09-18 | 2016-01-06 | 霍山县龙鑫金属制品有限公司 | A kind of auto parts machinery pressure casting method |
-
2016
- 2016-02-17 CN CN201610088473.0A patent/CN105522134A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008229649A (en) * | 2007-03-19 | 2008-10-02 | Mitsui Mining & Smelting Co Ltd | Method for casting alloy, and die-cast member |
| CN101664795A (en) * | 2009-10-30 | 2010-03-10 | 哈尔滨吉星机械工程有限公司 | Method for manufacturing vehicle camshaft cover by semi-solid rheoforming |
| CN104903025A (en) * | 2012-10-17 | 2015-09-09 | 微软技术许可有限责任公司 | Metal alloy injection molding |
| CN104878262A (en) * | 2015-05-18 | 2015-09-02 | 广东省工业技术研究院(广州有色金属研究院) | High-strength aluminum alloy and preparation method thereof |
| CN105081263A (en) * | 2015-09-17 | 2015-11-25 | 高文梅 | Casting method for high-strength corrosion-resisting brake assisting vacuum pump casing |
| CN105215314A (en) * | 2015-09-18 | 2016-01-06 | 霍山县龙鑫金属制品有限公司 | A kind of auto parts machinery pressure casting method |
Non-Patent Citations (1)
| Title |
|---|
| 万里: "《特种铸造工学基础》", 30 June 2009, 北京：化学工业出版社 * |
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Application publication date: 20160427 |
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| RJ01 | Rejection of invention patent application after publication |