Preliminary communication

The effects of reconditioning by welding of crankshafts in automotive industry

O. Chivu ; Polytechnic University of Bucharest, Romania
C. Rontescu ; Polytechnic University of Bucharest, Romania
D. T. Cicic ; Polytechnic University of Bucharest, Romania
G. Bălan ; Romanian-German University of Sibiu, Romania

Abstract

The reconditioning by welding process applied to the crankshafts in the automotive industry can be carried out by using various reconditioning technologies that are based on different welding parameters and processes. This paper presents a comparison between Shielded Metal Arc Welding (SMAW) and Welding in Gas (WIG) reconditioning processes from the perspective of the metallographic analysis conducted on the zones resulted after the depositing process. The heat cycle resulted during the two welding processes influences in a different manner the welding behavior of the base material due to the occurrence of micro-structural changes in the main zones of the deposit. The occurred structural changes may influence to a significant degree the operating behavior of the structures repaired by welding.

Keywords

welding; SMAW; WIG; reconditioning; metallographic structure

Hrčak ID:

141835

URI

https://hrcak.srce.hr/141835

Publication date:

1.1.2016.

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