NOVEL HOLLOW SHAFT MANUFACTURING METHOD

World Intellectual Property Organization Patent

APP PUB NO WO-2020253550-A1
SERIAL NO

PCTCN2020094502

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Abstract

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A hollow shaft manufacturing method, comprising steps of hollow cold rolling of a seamless steel pipe, cutting, annealing and surface treatment, forging molding, precision machining, and heat treatment. In the forging process in high-strength cold rolling of a seamless steel pipe, three times of forging, one time of annealing and one time of surface treatment are omitted compared with forging processes adopting rods; about 1/2 of time and costs are saved, the cycle is shortened, the costs are reduced, the energy consumption and the three wastes are reduced, the material utilization rate is increased to about 68%, and the expense costs calculated by weight between the processes are reduced, and the production cycle of same products is shortened by means of the process.

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Patent Owner(s)

Patent OwnerAddress
CHANGSHU SYNERGY AUTOMOBILE PARTS CO LTDCN215500 ZHITANG INDUSTRIAL PARK CHANGSHU CITY SUZHOU CITY JIANGSU PROVINCE SUZHOU CITY JIANGSU PROVINCE 215500

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Inventor(s)

Inventor Name Address
KUWAHARA YASUHIRO OSAKA

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