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#29 - 05/13/09 01:49 AM small hole surface enhancement
Yu-kui GAO Offline
Member

Registered: 02/04/09
Posts: 9
Loc: Beijing
How to peen the small hole with diameter is less than 6mm and depth is greater than 100mm or make cold expantion? Give you good advice and thank you.
_________________________
yukuigao

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#30 - 05/13/09 01:09 PM Re: small hole surface enhancement
Bill Barker Offline
Member

Registered: 05/06/99
Posts: 2
Loc: Grand Rapids, MI USA
You can use a small diameter rotating deflector lance to peen small ID surfaces that are deeper than they are wide. Here is a website that you can visit to get more details.

http://www.ptihome.com/casestudy.php?id=1

Best regards,

Bill Barker
Progressive Technologies Inc.

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#31 - 05/18/09 07:17 AM Re: small hole surface enhancement
Yu-kui GAO Offline
Member

Registered: 02/04/09
Posts: 9
Loc: Beijing
Thanks for Bill Barker's advice and I know many shot peening manufactures buy peening machinces from PTI. PTI shot peening machince is well-known to peen blade or engine parts in China and the specification of shot peening of aeronautical industry was made by me. I want to know the limited size of diameter of small holes which can be peened.

Thanks.

Yu-kui GAO

Dr. Yu-kui GAO,
Surface Enhancement Modification Group Leader,
Beijing Institute of Aeronautical Materials,
P.O.Box 81-5, Beijing 100095, China
Email: yukuigao@gmail.com
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yukuigao

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