摘要
不锈钢与钛合金的双金属结构已在化工、航天、航空等领域得到了广泛的应用.基于对异种金属构件焊接技术的研究,分析了异种金属焊接在熔点、膨胀系数、热导率、比热容等方面的性能特点.基于电子束异种金属的焊接工艺及特点,进一步讨论了不锈钢-钛合金电子束熔覆增材焊接技术.采用电子束熔覆增材焊接技术对不锈钢和钛合金进行焊接时,需要考虑过渡层的设置、焊接的强度与耐腐蚀性工艺、气体环境保护等重要的环节.
Abstract
Bimetallic structures combining stainless steel and titanium alloys have found extensive applications in fields like chemical engineering,aerospace,and aviation.Based on research into welding technology for dissimilar metals,this article analyzes the performance characteristics of welding between different metals in aspects such as melting points,expansion coefficients,thermal conductivity,and specific heat capacity.Focusing on the process and characteristics of electron beam welding for dissimilar metals,it further discusses the electron beam overlay additive welding technology for stainless steel-titanium alloy.When welding stainless steel and titanium alloy using electron beam overlay additive welding technology,it is necessary to consider important aspects such as the setting of transition layers,the strength and corrosion resistance of the welding process,and gas environment protection.
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