Method for manufacturing hollow shafts

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United States of America Patent

PATENT NO 9446445
APP PUB NO 20150050513A1
SERIAL NO

14369206

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Abstract

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The present invention describes a method of manufacturing a near-net shaped hollow shaft useful for high power applications such as gearboxes for wind energy industry. The method involves providing a concast bloom (of a round or rectangular or of any polygonal cross section) or an as-cast round ingot from which a hollow perform is prepared using hollow die punching, followed by process of heat treatment, proof-machining and stress relieving.

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Patent Owner(s)

Patent OwnerAddress
BHARAT FORGE LTDMAHARASHTRA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kalyani, Babasaheb Neelkanth Pune, IN 7 22

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