Water-cooling pipe, motor housing and manufacturing method thereof

Abstract

The invention provides a water-cooling pipe, a motor housing and a manufacturing method thereof. The motor housing comprises a housing body and a water-cooling pipe, wherein the water-cooling pipe is arranged in the housing body; the water-cooling pipe comprises two ports; the housing body comprises an inlet and an outlet; the two ports of the water-cooling pipe are arranged at the inlet and the outlet respectively; the water-cooling pipe is in a spiral form and is made of a copper material; and at least one support body is arranged between copper pipes of the water-cooling pipe. The manufacturing method of the motor housing comprises the following steps: (1) installing the spiral water-cooling pipe between a left metal die and a right metal die; (2) preheating the water-cooling pipe to 300-350 DEG C; (3) heating aluminum to 700-850 DEG G, and then adding 6.5%-7.5% of Si, 0.2%-0.4% of Mg and 0.03%-0.07% of La to obtain a molten aluminum alloy; (4) filling a mold cavity between the left metal die and the right metal die with the molten aluminum alloy, wherein the casting temperature is 700-720 DEG C; (5) after the molten aluminum alloy is hardened, separating the left die from the right die and obtaining a motor housing blank; and (6) carrying out artificial aging treatment on the motor housing blank.

Description

Technical field [0001] The invention relates to the field of motor accessories, and in particular to a manufacturing method of a water cooling tube, a motor housing and a motor housing. Background technique [0002] Nowadays, most domestic motors use air-cooled heat dissipation technology. Air-cooled heat dissipation has the problems of poor heat dissipation performance, easy damage, easy dust accumulation on the heat sink and short service life, especially when used in harsh environments. For motors that work under harsh conditions such as large electric vehicles, hybrid vehicles, generators, and mine motors, water-cooled motors are the first choice. The domestic water-cooled motor shells are all integrated motor shells cast with aluminum alloy sand cores. Due to porosity and other defects during casting, the integrated motor shell products have serious problems such as low yield, water leakage, and short service life. . Summary of the invention [0003] An object of the presen...

AI Technical Summary

Problems solved by technology

However, domestic water-cooled motor casings are all one-piece motor casings cast by aluminum alloy sand cores. Because air holes and other defects are prone to occur during casting, the products of one-piece motor casings have serious problems such as low yield, water leakage, and short service life.

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