Motor casing low-pressure casting cooling system
A low-pressure casting and cooling system technology, applied in the field of casting, can solve the problems of difficulty in improving the qualification rate of castings, and it is difficult to ensure the elimination of defects, so as to achieve good cooling effect and improve production efficiency.
Inactive Publication Date: 2021-04-06
东风汽车零部件集团有限公司通用铸锻分公司
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Problems solved by technology
If there is no control means, it is difficult to ensure the elimination of defects, and it is difficult to improve the pass rate of castings
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[0023] pass below Figure 2 ~ Figure 4 As well as listing some optional embodiments of the present invention, the technical solutions (including preferred technical solutions) of the present invention are further described in detail. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0024] The motor housing low-pressure casting cooling system designed by the present invention is characterized in that: an annular cooling water channel is provided on the mold corresponding to the variable section of the motor housing water channel, and a plurality of annular water channels are arranged on the mold, and each annular water channel is independent Connect the cooling device; open the annular cooling water channel f...
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Abstract
The invention discloses a motor casing low-pressure casting cooling system. The system is characterized in that an annular cooling water channel is arranged at a position, corresponding to a variable cross-section of a motor casing water channel, of a mold, a plurality of annular water channels are arranged on the mold, each annular water channel is independently connected with a cooling device, the annular cooling water channels are sequentially opened from top to bottom to cool the mold, and at most two annular cooling water channels are opened at the same time. The casting cooling process can be effectively controlled, the cooling effect is good, the defects of shrinkage porosity, shrinkage cavities and the like are avoided, and meanwhile the production efficiency is improved. The annular water cooling mode is set in the wall thickness transition area of a casting, especially in the thick position, the annular water cooling mode and the center water cooling mode which are independently controlled can effectively guarantee the consistency of cooling strength, a foundation is provided for sequential solidification, gas is slowly exhausted in the mold filling process, and the internal quality of the casting is effectively improved.
Description
technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a low-pressure casting cooling system for a motor casing. Background technique [0002] More than 90% of the existing motor casings have water channels. After the water channels exist, the thickness difference between the upper and lower walls of the casting is relatively large. Control means, it is difficult to ensure the elimination of defects, and it is difficult to improve the pass rate of castings. [0003] On the other hand, the existence of the water channel will extend the process beat. Considering the reduction of the beat, it is particularly important to design an annular water channel to solve the shrinkage and reduce the beat. [0004] The motor casing produced by low-pressure casting process generally has problems such as long process cycle, shrinkage and looseness in the thick and large internal position, and poor exhaust. This is especially true for t...
Claims
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IPC IPC(8): B22D18/04B22D27/04
CPCB22D18/04B22D27/04
Inventor 强根金魏啟金吴云波李静洋徐畅程亮
Owner 东风汽车零部件集团有限公司通用铸锻分公司