Ti および Ti 合金のイナートガス・アーク溶接に関する研究(第 1 報) : Ti の溶接性とその適正溶接条件について

概要

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In the inert-gas arc welding of titanium, we must most pay attention to shielding the weld metal and its neighbourhood (heat affected zone) from atmosphere. For this purpose, it is desirable to weld titanium in the chamber which inert-gas is filled up, or with proper jigs. And to examine how the welding conditions affect the weld properties of materials, it is very important for the determination of the proper welding conditions and the study of the weldability for titanium. In this investigation, the following terms which were seemed to be most important for the welding of titanium, were studied the effect on the weld properties of titanium, and the suitable welding conditions were obtained. 1) Surface preparation for titanium 2) Joint design 3) Number of welding pass for thick plates 4) Sielding method 5) Design of fixture and backing plate 6) Purity and flow of Ar gas 7) Diameter of electrode 8) Welding current 9) Welding speed, etc. Titanium welds obtained with the suitable welding conditions have almost as good mechanical properties as the base metal. Therefore, titanium can be said to have good weldability.
1961-08-25