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铁-镍-钴合金由于具有适宜的热膨胀系数,已大量地应用于玻璃-金属封接、陶瓷-金属封接及钎焊工艺中。我国目前常用的铁-镍-钴合金有4J29(53％Fe、29％Ni、18％Go)及4J33(53％Fe、33％Ni、14％Go)两种。在用银铜焊料以及纯铜等焊料对可伐进行钎焊与封接时,经常出现可伐开裂的现象。这种缺陷是无法修补的,在科研及生产上曾造成相当大的损失。如某厂一种大型发射管,在一个月内因此缺陷而报废的部件竟达85％。经过各单位十余年来的研究和生产实践,对开裂原因有了初步的了解,并采取了相应的工艺措施,使问
Iron-nickel-cobalt alloys have been extensively used in glass-to-metal, ceramic-to-metal and brazing processes due to their suitable coefficients of thermal expansion. Our current iron-nickel-cobalt alloy with 4J29 (53% Fe, 29% Ni, 18% Go) and 4J33 (53% Fe, 33% Ni, 14% Go) two. In the silver and copper brazing with pure copper and other welding materials for cutting and cutting Khoar, Kho cracking phenomenon often occurs. This flaw is irreparable and has caused considerable losses in scientific research and production. Such as a factory a large launch tube, so scrapped parts within one month as much as 85% of the components. After more than ten years of research and production practice of all units, we have got a preliminary understanding of the reason of cracking and adopted the corresponding technological measures to make Q