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Influence of Process Parameters on Mechanical Property of Stainless Steel 430 Plate by TIG And MIG Welding

Author(s):

Vikarm , guru Jambheshwar University of science and technology, hisar; Pankaj Sharma, guru Jambheshwar University of science and technology, hisar

Keywords:

TIG welding, MIG welding, stainless steel 430, tensile strength, hardness

Abstract

Stainless steel 430 is a non hardenable steels belonging to ferritic group of steels. It has been widely used for chemical and household applications. Hence, the present work describe the 8 mm thick stainless steel 430 grade plate butt welded by TIG and MIG welding process using single pass welding procedure in single V groove design. The present research work assesses the effect of different process parameters such as welding current, voltage, speed, gas pressure and gas flow rate on different mechanical properties such as tensile strength and hardness of TIG and MIG welded stainless steel plates of 430 grade. In the present work, tensile strength and hardness of the TIG and MIG welded joints have been evaluated and results are compared. From this investigation, it is found that TIG welded joints of stainless steel 430 showed superior tensile strength compared to MIG welded joints, and this is mainly due to formation of very fine dendrite microstructure in the weld deposited due to low heat input rate. MIG welded joints have higher hardness because of higher heat input rate compared with TIG welding.

Other Details

Paper ID: IJSRDV4I100024
Published in: Volume : 4, Issue : 10
Publication Date: 01/01/2017
Page(s): 40-45

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