Title:
化成処理性に優れた部材の加工方法
Document Type and Number:
Japanese Patent JP5334519
Kind Code:
B2
Abstract:
In a method for processing a high-strength member having a high Si content of more than 0.7% by mass, a high-strength steel material containing, on the basis of mass percent, 0.05% or more C, more than 0.7% Si, and 0.8% or more Mn is subjected to processing controlled such that the sum total of absolute surface strains in a predetermined direction each applied in individual process steps of the processing is 5% or more as nominal strain to form a member having a predetermined shape. The member, even containing more than 0.7% Si, can have markedly improved chemical conversion treatability without mechanical grinding or chemical pickling treatment.
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Inventors:
Yasuhide Ishiguro
Akio Sato
Shimizu Yasuhisa
Akio Sato
Shimizu Yasuhisa
Application Number:
JP2008262054A
Publication Date:
November 06, 2013
Filing Date:
October 08, 2008
Export Citation:
Assignee:
jfe Steel Corporation
Honda motor industry stock company
Honda motor industry stock company
International Classes:
C23C22/78; B21C37/08; B21D1/00; C21D9/46; C22C38/00; C22C38/06; C22C38/58; C23C22/07
Domestic Patent References:
| JP2005290485A | ||||
| JP2004292926A | ||||
| JP64000260A | ||||
| JP5059493A | ||||
| JP2000119750A | ||||
| JP8283852A | ||||
| JP2006089804A | ||||
| JP2003049246A | ||||
| JP7278730A |
Attorney, Agent or Firm:
Suzuki Yoko
Kenichiro Ochiai
Eiichi Kobayashi
Kenichiro Ochiai
Eiichi Kobayashi