一、前言随着宇航事业的发展,毛细管钎焊结构越来越被重视,并已准备用于某些关键的部件上。据了解,由于毛细管结构隔热性能好,可用于姿控发动机头部。因此,开展毛细管结构钎焊工艺的研究具有一定的现实意义。试验用的毛细管钎焊结构,是把多根外径0.75毫米、内径0.45毫米的毛细管的两头,插入法兰小孔(而插入深度要比法兰厚度少 I. Introduction With the development of aerospace industry, capillary soldering structure is more and more attention, and has been prepared for some of the key components. It is understood that, due to thermal insulation capillary structure, can be used to control the engine head. Therefore, to carry out capillary structure brazing process has some practical significance. Experimental capillary soldering structure, is the number of 0.75 mm OD, 0.45 mm in diameter capillary tube inserted into the flange holes (and the insertion depth than the thickness of the flange less