EXPERIMENTAL STUDY OF TENSILE TEST IN RESISTANCE SPOT WELDING PROCESS

Authors

  • HABIB LEBBAL
  • ZIADI ABDELKADER
  • BERREKIA HABIB
  • BOUKHOULDA FAROUK BENALLEL

Keywords:

RESISTANCE SPOT WELDING(RSW), TENSILE TESTS, STRESS, STRAIN, DP450, TRIP700, HSLA350.

Abstract

RESISTANCE SPOT WELDING (RSW) IS A WIDELY USED JOINING PROCESS FOR FABRICATING SHEET METAL ASSEMBLIES IN AUTOMOBILE INDUSTRY .IN COM-PARISON WITH OTHER WELDING PROCESSES THE RSW IS FASTER AND EASIER FOR AUTOMATION. THIS PROCESS INVOLVES ELECTRICAL, THERMAL AND ME-CHANICAL INTERACTIONS. RESISTANCE SPOT WELDING PRIMARILY TAKES PLACE BY LOCALIZED MELTING SPOT AT THE INTERFACE OF THE SHEETS FOLLOWED BY ITS QUICK SOLIDIFICATION UNDER SEQUENTIAL CONTROL OF PRESSURE WATER-COOLED ELECTRODE AND FLOW OF REQUIRED ELECTRIC CURRENT FOR CERTAIN DURATION. IN THIS WORK THE TENSILE TESTS WERE STUDIED WITH DIFFERENT KINDS OF STAINLESS STEELS: THE DUAL-PHASE (DP450), THE TRI-PHASE (TRIP700) AND THE HIGH-STRENGTH LOW-ALLOY STEEL (HSLA350). THIS AIMS TO SHOW THE INFLUENCE OF THE TYPE MATERIAL, THE SPOT WELDING MACHINE, THE OVERLAP LENGTH, THE ANGLE OF THE ROLLING DIRECTION AND THE THICKNESS OF THE SHEET IN RESISTANCE SPOT WELDING PROCESS.

Published

2016-02-27

Issue

Section

Articles