Title:
ワークの降伏強度を高める方法、及びその装置及びワーク
Document Type and Number:
Japanese Patent JP6992015
Kind Code:
B2
Abstract:
The present disclosure discloses a method for improving yield strength of one or more workpieces. The method includes positioning the one or more workpieces in a punch and die assembly and operating the punch and die assembly such that, a plurality of surface protrusions are formed on the one or more workpieces. The plurality of surface protrusions are formed by plastic deformation on the one or more workpieces, to improve yield strength of the one or more workpieces. The present disclosure also provides an apparatus to improve yield strength of the one or more workpieces. The present disclosure is configured to improve yield strength of the one or more workpieces, without altering its mechanical characteristics.
Inventors:
Suman, Guha
Shaikh, Shamsuddin
Rafur Kumar, Walmer
Rudra Bubai, Sarkar
Shaikh, Shamsuddin
Rafur Kumar, Walmer
Rudra Bubai, Sarkar
Application Number:
JP2018565835A
Publication Date:
January 13, 2022
Filing Date:
December 27, 2017
Export Citation:
Assignee:
Tata Steel Limited
International Classes:
B21D22/02; B21D24/00
Domestic Patent References:
| JP2004174553A | ||||
| JP11319963A | ||||
| JP2001506543A | ||||
| JP2017530010A | ||||
| JP2001001061A |
Foreign References:
| US3996780 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki