Weldability and Shear Strength of Cylindrical Resistance Spot Welding Stainless Steel 304
A.Sifa*, F.Dionisius, Badruzzaman, T.Endramawan, N.Alipah

Politeknik Negeri Indramayu

Abstract

Spot resistant welding is widely used in the welding process of steel plates but contrast welding applications in the process of making baskets with stainless steel cylinders. Stainless steel which is widely used in industry, especially food equipment products namely stainless steel 304. The welding process of resistant spot welding in cylindrical stainless steel aims to determine the welding ability and shear strength of stainless steel 304 material with a thickness of 2 mm. This research method uses an experimental variation of welding current; 0,7 kA, 1,4 kA and 2,1 kA. Determination of the nugget area and HAZ measurements were carried out using a digital microscope. The experimental results of the widest nugget area are 3.280 mm2, the widest HAZ area is 2,676 mm2 at 2,1 kA welding current. Shear test results, the maximum shear stress of 852,320 MPa and a maximum load of 2676,285 N were found at a current of 2,1 kA. Visually the largest nugget and HAZ area are proportional to the strength of the current given as well as the shear strength and have good quality weldability.

Keywords: Cylindrical Resistance Spot Welding, Stainless Steel 304, Weldability

Topic: Mechanical Engineering