Importance

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Abstract

A compound profiling forging method for a wind turbine main shaft includes: making a billet into a flat square billet, returning the billet into a furnace and holding a temperature at 1250° C.; preliminary punching, including: upsetting and drawing out the billet twice, and carrying out punching and rolling; preparing a piercing punch and a punching block, putting the billet in the punching block, putting the piercing punch into a hole of the billet, and operating an oil press to press the piercing punch to be flush with the billet; heating the billet, holding a temperature at 850° C., putting the billet in the punching block, preparing a female die and a punch, and inserting the piercing punch into an inner hole of the billet to carry out flange upsetting; and drawing out the shaft body of the billet in sequence, with a forging temperature range of 850-1250° C.

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First Claim