Preliminary communication

Cold weld cracking susceptibility of high strength low alloyed (HSLA) steel NIONIKRAL 70

A. S. Tawengi ; Faculty of Mechanical Engineering, University of Belgrade, Belgrade, Serbia
A. Sedmak ; Faculty of Mechanical Engineering, University of Belgrade, Belgrade, Serbia
V. Grabulov ; Institute for material testing, Beograd, Serbia

Abstract

In view of the importance of high strength low alloy (HSLA) steels, particularly for critical applications such as offshore plat forms, pipeline and pressure vessels, this paper reports on an investigation of how to weld this type of steel without cold cracking. Using manual metal arc welding process and Tekken test (Y - Grove test) has been carried out both to observe the cold cracking phenome non, and to investigate the influencing factors, such as preheating temperature and energy input, as well as electrode strength and diameter. How ever the results of the experiments show that there is a risk of cold cracking.

Keywords

HSLA steel; weld metal; cold cracks; hardness; Heat Affected Zone (HAZ)

Hrčak ID:

122206

URI

https://hrcak.srce.hr/122206

Publication date:

1.10.2014.

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