【摘要】 钎焊接头的主要缺陷是夹气和夹渣.在六十年代初期,作者曾经指出:夹气,夹渣的形成是与钎料、钎剂的流动形式和过程有关.为了提高钎缝的钎着率.生产实践巳证明,采用不等间隙钎焊是有效的.在本文所提及的试验中,采用X 射线及工业电视观察钎料的动态过程并用摄影机将其记录.为了增强X 射线图象的反差,试验中主要采用S_a—P_b 钎料钎焊铜合金试件.钎焊是在水平位置下进行的.更多还原

【Abstract】 The main defects in brazed joints are enclosed gas (void) and flux. In the earlynineteen sixties the authors noticed that the mode of the flow of filler metal and fluxhad much effect on the formation of voids and enclosures. It has already been provedby practice that the adoption of unparallel clearance brazing technique enhances the ulti-mate banded area of the brazed joint. In the experiments mentioned in this paper,X--ray with industrial TV aid and cine--camera for recording has been employedtoobserve the dynamic hehaviour of liquid filler metal. Mainly Sn--Pb filler metal andcopper alloy specimens are used in.order to get an intensified X--ray film contrast.Brazing is done in the horizontal position.更多还原