近年来,随着无线电和仪表工业的发展,对钎焊技术和钎料提出了新的要求,希望提供熔化温度在400～600℃的钎料。这一方面是由于复杂零件进行多步钎焊的需要,更重要的是降低钎焊温度可减小零件的变形,从而大大地节省钎焊后的整形工时。为此,我们对熔点400～600℃钎焊铜及铜合金的钎料进行了探讨。现将试验情况介绍如下。 In recent years, with the development of radio and instrumentation industry, new requirements have been put forward on brazing technology and brazing filler metal, in the hope of providing brazing material with a melting temperature of 400-600 ° C. This is due in part to the need for multi-step brazing of complex parts and, more importantly, to reduce the brazing temperature, to reduce the deformation of the part, thereby greatly saving the post-brazing work. To this end, we have brazed copper and copper alloy solder 400 ~ 600 ℃. Now test the situation described below.