Thermo physical properties of protective coatings used in arc welding by melting

Author

Zernin, E.A. ; Fedko, V.T. ; Sapozhkov, S.B.

Author_Institution

Tomsk Polytech. Univ., Russia

fYear

2003

fDate

7-11 April 2003

Firstpage

105

Lastpage

107

Abstract

The paper investigates the thermophysical properties of protective coatings used in arc welding by melting and their effect on the value of the residual welding stress. Based on the performed investigations, it was established that the usage of protective coatings provide a decrease of the residual stresses after welding. This is due to the slower cooling of the welded joint metal than after welding without protective coating. In this case, the less factor of thermal diffusivity of protective coating, the lower residual stress after welding. Hence, in developing new protective coatings it is necessary to aim at obtaining composition with the lowest factor of thermal diffusivity.

Keywords

arc welding; melting; protective coatings; thermal diffusivity; thermal stresses; arc welding; melting; protective coatings; residual welding stress; thermal diffusivity; thermophysical properties; Automation; Coatings; Electrical resistance measurement; Equations; Production; Protection; Residual stresses; Spraying; Thermal stresses; Welding;

fLanguage

English

Publisher

ieee

Conference_Titel

Modern Techniques and Technologies, 2003. MTT 2003. Proceedings of the 9th International Scientific and Practical Conference of Students, Post-graduates and Young Scientists

Print_ISBN

0-7803-7669-2

Type

conf

DOI

10.1109/SPCMTT.2003.1438152

Filename

1438152