Low-pressure casting method for automobile motor casing and motor casing structure

Abstract

The invention discloses a low-pressure casting method for an automobile motor casing. The low-pressure casting method for the automobile motor casing includes the following steps that (1) a sand core structure of a spiral water channel is manufactured; (2) the sand core structure is placed on a lower mold body of a die-casting mold; (3) the automobile motor casing with the sand core structure of the spiral water channel is cast through a low-pressure casting device; (4) heat treatment is conducted on the automobile motor casing, then sand is vibrated out, and the automobile motor casing is provided with the complete spiral water channel; and (5) holes formed in the original sand core structure portion of the sidewall of the automobile motor casing are filled up through welding, so that the complete automobile motor casing with the spiral water channel is formed. The invention further discloses a motor casing structure. Through the low-pressure casting method for the automobile motor casing, the aluminum alloy low-pressure casting process is adopted and the spiral water channel is cast through the sand core of the spiral water channel, so that the cooling effect on a motor is guaranteed, the service life of the motor is greatly prolonged, the requirement for long-time working of an automobile can be met, and the weight of the whole motor is reduced by about 60%.

Description

technical field [0001] The invention relates to the technical field of motor casing casting, in particular to a low-pressure casting method for an automobile motor casing and a motor casing structure implementing the casting method. Background technique [0002] Casting production is an important method for making mechanical parts or parts blanks in the machinery manufacturing industry. Casting refers to the method of manufacturing molds, melting metal, and pouring molten metal into a mold cavity with a shape similar to that of the part. After it is cooled and solidified, a metal piece (casting) with a certain shape and performance is obtained. Most casting blanks need to be machined into mechanical parts. Under certain process conditions, casting can also produce less cutting precision parts blanks or parts without cutting. Casting is essentially the use of the flow properties of molten metal to achieve forming. [0003] In the automobile manufacturing process, there are...

AI Technical Summary

Problems solved by technology

[0005] The traditional motor casing adopts riveting and welding technology, and multiple pieces are spliced ​​and welded to form a casing. The manufacturing process is complicated, the efficiency is low, and standardization cannot be formed. There are many welding parts and many defects in the appearance of the product.

At present, the new energy vehicles on the market use electric drive. If the motor shell is made of cast iron, not only the weight is heavy, but also the cooling effect is not good. time running

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