Invention Grant
- Patent Title: Method for manufacturing hollow shafts
- Patent Title (中): 空心轴制造方法
-
Application No.: US14369206Application Date: 2012-12-27
-
Publication No.: US09446445B2Publication Date: 2016-09-20
- Inventor: Babasaheb Neelkanth Kalyani
- Applicant: Babasaheb Neelkanth Kalyani
- Applicant Address: IN Maharashtra
- Assignee: Bharat Forge Ltd.
- Current Assignee: Bharat Forge Ltd.
- Current Assignee Address: IN Maharashtra
- Agency: Andrus Intellectual Property Law, LLp
- Priority: IN3714/MUM/2011 20111230
- International Application: PCT/IB2012/057749 WO 20121227
- International Announcement: WO2013/098771 WO 20130704
- Main IPC: B21J5/08
- IPC: B21J5/08 ; B21K1/06 ; B21J5/00 ; B21J5/10 ; B21C1/00 ; C21D8/10 ; C22F1/10 ; C22F1/18 ; F03D11/02

Abstract:
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.
Public/Granted literature
- US20150050513A1 Method For Manufacturing Hollow Shafts Public/Granted day:2015-02-19
Information query