Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR QUENCHING COATED STEEL MATERIAL
Document Type and Number:
Japanese Patent JP2000144238
Kind Code:
A
Abstract:

To provide a quenching method of a coated steel material, in which the damage of the coating layer of plated layer, etc., can be restrained and it is profitable to secure the original function of the coating layer of the plated layer, etc.

When the quenching treatment is applied to the coated steel material closely sticking the coating layer having lower m.p. or b.p. than that of the steel material on the steel material, the steel material is heated to the quenching temp. and cooled so that the basic structure of the steel material after quenching becomes the co-existing structure of ferrite and martensite. In this way, the transformation strain with the quenching treatment is restrained, and the damage, such as peeling of the coating layer, is restrained.


Inventors:
MIYAMOTO NORITAKA
ONISHI MASAZUMI
NISHIO MASAHIRO
Application Number:
JP32561798A
Publication Date:
May 26, 2000
Filing Date:
November 16, 1998
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOYOTA MOTOR CORP
International Classes:
C23C18/52; C21D1/18; C23C2/26; C25D5/48; (IPC1-7): C21D1/18; C23C2/26; C23C18/52; C25D5/48
Attorney, Agent or Firm:
Hiroshi Okawa