Single Spot Welding Research Articles

三相低周波式による軽合金の点熔接について

The purpose of this investigation was to study the characteristics of spot weld in alminum alloys 24S-T when used for three phase frequency converter type spot welding system. We studied the spot weld results in shear strength, indentation, cross section and X-ray photograph by changing welding conditions of three phase spot welding. Results obtained are as follows ;(1) Indentation are generally very small because of shortness of heat cycle in comparing with single phase spot welding.(2) The influence of welding current, heating time, weld pressure on spot weld are very large.(3) The influence of forging time delay is very important to the occuring of effects when post heat current is comparably large and its time is short.