SPOT WELD GROWTH ON MEDIUM CARBON STEEL (PART 1)

Medium carbon steel is very common material that used in automotive industries for its mechanical assembly today. So the joining mechanism has to be low cost; reliable and last longer. In such situation the automotive industries are preferred to use the resistance spot welding. The robustness of mechanical assemblies is mainly anticipated and it relies on the proper weld joint. Hence this paper is analyzing the characteristic of medium carbon steel’s weld joints with respected to its basic controlling parameters (current, weld time and force) changes. The entire experiment was carried out by varying the current and weld time at first attempt and the current and force at second attempt. Eventually the welded specimens were underwent tensile, hardness, and metallurgical test to relate the changes that happened due to the controlling parameters changes