Viability of Application of the Double Layer Technique in Welding Multiple Passes for Vehicle Structure and Heavy Haul Machinery

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Viability of Application of the Double Layer Technique in Welding Multiple Passes for Vehicle Structure and Heavy Haul Machinery

Nascimento, Alexandre Saldanha do / Mota, Carlos Alberto Mendes da / de Paes Santos, Carlos Vinicius / Oliveira, Daniel Rodrigues / Fernandes, Everaldo Afonso / Silva, Fabrício Paiva da / Muños, Humberto Aguirre

Abstract

The maintenance and manufacture of Chassis have been used of more noble materials in the welding applied to the most critical points. In this sense, this study presents the results of some researches developed with ASTM A182 F22 structural steel (a low alloyed steel) by the AWS ER 80S-G Wire. For the buttery, the double layer technique was used with "Higuchi" and "modified Higuchi " tests and the application of "decision diagrams" to refine the parameters to be used. In order to verify the efficiency of the mentioned techniques of fabrication, microhardness tests were carried out, the presence of carbides formed at the interface between the filling and buttery was observed, these responsible for microhardness alterations were also observed the presence of undesired structures such as Martensite in the analyzed ZACs. The welding process used was the GMAW with gas Ar2% O2. Results will be presented regarding the analysis of optical microscopy of the ZAC's in the buttery/ base metal interface.

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Document information

Title :

Viability of Application of the Double Layer Technique in Welding Multiple Passes for Vehicle Structure and Heavy Haul Machinery

Additional title:

Sae Technical Papers

Contributors:

Nascimento, Alexandre Saldanha do (author) / Mota, Carlos Alberto Mendes da (author) / de Paes Santos, Carlos Vinicius (author) / Oliveira, Daniel Rodrigues (author) / Fernandes, Everaldo Afonso (author) / Silva, Fabrício Paiva da (author) / Muños, Humberto Aguirre (author)

Conference:

26th SAE BRASIL Inernational Congress and Display ; 2017

Published in:

Sae Technical Paper Series

Publication date :

2017-11-07

ISSN :

2688-3627 , 0148-7191

DOI :

https://doi.org/10.4271/2017-36-0242

Type of media :

Conference paper