Effect of Welding Parameters on Pull-through Load in Projection Welding of M4 Nut to Hot Rolled Low Carbon Steel Sheet

Authors : Mustafa Yazar, Şükrü Talaş, Hilal Kır

Pages : 224-236

Doi:10.52795/mateca.1549603

View : 59 | Download : 53

Publication Date : 2024-12-30

Article Type : Research Paper

Abstract :Projection welding is frequently used in automotive industry for its practicality in application and also help complex parts to be welded fast enough to reduce labour intensive processing. This study investigates the effect of parameters of projection welding on the weldability performance of dissimilar steels of hot rolled Low Carbon steel (WSS-M1A365-A22) sheet to M4 steel nuts in the projection welding operation. The aim of this study was to improve product quality by examining the fracture load within the minimum and maximum value range specified by the automotive industry. In this study, the effect of welding parameters on the quality of the projection weld of M4 weld nut on steel sheet was investigated using a 100 kVA projection welding machine with UNIS brand MFDC (Mid Frequency Direct Current) transformer. The samples underwent a tensile snap force test using a fully destructive testing device. The tests used a 3 mm WSS-M1A365-A22 steel sheet and M4 DIN 928 welding nut. The current value, welding time, and electrode compression force were varied to determine the optimal conditions. The results showed that a current value of 14.5 kA, welding time of 23 ms, and electrode compression force of 480 dAN met the pull-through load conditions.
Keywords : Projeksiyon kaynağı, M4 kaynak somunu, WSS-M1A365-A22 çelik sac