Resistance Welding of Commercially Pure Ti and its Fatigue Strength

Abstract

In this paper, the purpose of this investigation was to study the characteristics of spot weld in commercially pure Ti and its fatigue strength when used for three phase frequency converter type spot welder. We studied the spot weld results in shear strength, indentation, macro section and fatigue strength etc. by changing some welding variables. Results obtained are as followes ;
(1) The influence of welding current and heat time on spot weld are very significant.
(2) The influence of weld pressure was little observed.
(3) Indentation are very small when used for three phase converter type spot welder.
(4) No defect is produced for wide heating range.
(5) The fatigue limits of spot weld in commercially pure Ti are somewhat higher than for similar joints in Alclad 24S-T alminum alloy.