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Casting process method of integrated water cooling circulation motor casing

A technology of water-cooling cycle and casting process, which is applied in the field of casting process of integrated water-cooling cycle motor casing, can solve the problems of increased production cost and labor intensity, high mold cost, and large investment in equipment, so as to reduce labor intensity and production Effects on cost, efficiency improvement and product yield

Active Publication Date: 2014-08-20
GUANGDONG LIHAO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The motor casing used to cool the electric drive on the new energy vehicle, the built-in water channel does not allow leakage, cracks and other phenomena, its prominent feature is that the two ends are thick, and because of the water channel in the middle, it is difficult to achieve top-down compensation Shrink effect, casting difficulty is relatively large
At present, the split type water-cooled circulating motor housing is mainly used in the market. The inner sleeve and the outer sleeve are mainly assembled by gravity casting, processing, thermal sleeve, welding and other processes. Since this method has many production processes, the production process has certain limitations. Instability, high mold cost, large equipment investment, and it is difficult to have good compactness in gravity casting; and the split water-cooled circulating motor shell is very easy to break after welding and after some special operations such as vibration and extrusion. Defects such as cracks will seriously affect the reliability, safety and practicability of the product
Most other water-cooled cycle integrated motor casings adopt the process of machining and sealing the waterway surface through the sealing groove. This method is also unsafe under complex working conditions, especially when the sealing ring is exposed to sunshine or water immersion. There are aging and cracking phenomena, and at the same time, the production cost and labor intensity are increased through mechanical processing, which cannot meet the market demand

Method used

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Embodiment Construction

[0007] A casting process method for an integrated water-cooled circulating motor shell: a. First design the water channel sand core inside the motor shell and then process it; b. Place the processed water channel sand core in the mold; c. Then Clamp the mold through the surrounding hydraulic stations and fix the sand core of the waterway through the set pressing point; d. Then apply pressure to the aluminum liquid in the crucible through the air pressure filling control system of the low-pressure pouring machine; e. Through the riser Slowly raise the height of the aluminum liquid, and increase the air pressure when the aluminum liquid reaches the bottom mold of the mold, so that the aluminum liquid can fill the entire cavity at a rate of 0.9-1.3 m / s; f. Under pressure, the motor shell is condensed and solidified, and the motor shell is cast under this pressure; g. Take out the casted motor shell from the cavity of the mold, and after it is completely cooled, burn sand and heat ...

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Abstract

The invention discloses a casting process method of an integrated water cooling circulation motor casing. The method includes the steps that a, a water channel sand core is manufactured first; b, the water channel sand core is placed in a die; c, then, die assembling is conducted on the die through hydraulic pressure stations on the periphery, and the water channel sand core is fixed through set compressing points; d, afterwards, pressure is applied to molten aluminum in a crucible through an air pressure filling control system of a low pressure casting machine; e, the height of the molten aluminum is increased slowly through a liquid rising tube, air pressure is increased when the molten aluminum arrives at the die bottom of the die, and accordingly an entire cavity is filled with the molten aluminum at the speed of 0.9-1.3 m / s; f, pressurization is conducted continuously, and the motor casing is condensed and solidified under certain pressure; g, the cast motor casing is taken out from the cavity of the die, and after complete cooling, the water channel sand core is removed through sand burning, heat treatment and sand shaking; h, a feeder head and burrs are removed ultimately. By the adoption of the casting process method, the production efficiency and the percent of pass can be improved, the labor intensity of workers is lowered, and the production cost is lowered.

Description

technical field [0001] The invention relates to a casting process method for an integrated water-cooled circulating motor casing. Background technique [0002] The motor casing used to cool the electric drive on the new energy vehicle, the built-in water channel does not allow leakage, cracks and other phenomena, its prominent feature is that the two ends are thick, and because of the water channel in the middle, it is difficult to achieve top-down compensation Shrinkage effect, casting difficulty is relatively large. At present, the split type water-cooled circulating motor housing is mainly used in the market. The inner sleeve and the outer sleeve are mainly assembled by gravity casting, processing, thermal sleeve, welding and other processes. Since this method has many production processes, the production process has certain limitations. Instability, high mold cost, large equipment investment, and it is difficult to have good compactness in gravity casting; and the split...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/04
Inventor 宋德付
Owner GUANGDONG LIHAO TECH
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