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一、前言钛合金在工业中的应用日益增多,尤其在化工、航空、宇航工业中,更倍受重视。目前,我国常用的钛合金有 TA7、TC1、TC3等。众所周知,钛合金具有较活泼的化学性能,易与氢,氧、氮等元素发生作用,从250℃开始吸氢、从400℃开始吸氧、从600℃开始吸氮。因而,焊接钛合金必须注意对加热区的保护。为了避免
First, the foreword Titanium alloy is used more and more in the industry, especially in chemical industry, aviation, aerospace industry, pay more attention. At present, China’s common titanium alloy TA7, TC1, TC3 and so on. As we all know, titanium alloy has more active chemical properties, easy and hydrogen, oxygen, nitrogen and other elements to play a role, starting from 250 ℃ hydrogen absorption, starting from 400 ℃ oxygen, starting from 600 ℃ nitrogen. Therefore, the welding of titanium alloy must pay attention to the protection of the heating zone. in order to avoid