论文部分内容阅读
可焊性技术攻关五年来,各种国产活化松香焊剂应运而生,并广泛用于印制板的自动焊接。1983年部科技司要求我所尽快造出优质波峰焊剂,以便定点生产。截至1984年4月底,我们共收国内、外焊剂42种,并在当年完成了全部工作。优选结果令人兴奋地表明:在焊剂活性、腐蚀性、电性能三个主要方面,我国已有13种焊剂优于当时进口的五种焊剂。下面就整个优选工作向领导及与会代表作一汇报。一、试验项目及试验方法的确定鉴于当时没有有关的国际标准,我们对美、英、德、日、法等几个主要工业国家的有关标准作了一番认真地分析研究,搞了一个混合型的方法,
Solderability research 5 years, a variety of domestic activated rosin flux came into being, and is widely used in printed circuit board automatic welding. In 1983, the Department of Science and Technology asked me to make high-quality wave soldering as soon as possible for the purpose of fixed-point production. By the end of April 1984, we had received 42 kinds of foreign and domestic fluxes and completed all the work in that year. The results of the optimization have shown excitingly that in the three main aspects of flux activity, corrosivity and electrical properties, 13 fluxes in our country are superior to the five fluxes imported at that time. Below to the entire preferred work to leaders and delegates to make a report. First, the test items and test methods to determine In view of the absence of relevant international standards, we have the United States, Britain, Germany, Japan, France and other major industrial countries made some careful analysis of the relevant standards, engage in a mixed Type of method,