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1985年6月本厂200t 油压机立柱因活动横梁铸铁套破碎,立柱被严重拉伤,在300×140mm面积内连续拉伤,伤痕深度0.05～2.5mm。采用锡铋合金铅焊进行焊补,具体方法如下: 1.焊前准备将油压机立柱取下平放,先用金属洗净剂将油污清洗几遍,除去油污,然后用碎锯条、三角刮刀剔出伤痕深处油污及金属末,再用丙酮洗净。在镀铜前用50％蒸馏水配50％盐酸(重量比)清洗液清洗。
June 1985 200t hydraulic machine column due to the activities of cast iron sets of broken, columns were severely strained, in the area of 300 × 140mm continuous strain, scar depth 0.05 ~ 2.5mm. The use of tin-bismuth alloy welding lead welding, the specific method is as follows: 1. Preparation of the welding before the hydraulic column removed flat, the first metal cleaning agent to clean the oil several times, remove the oil, and then with a broken saw blade, triangular scraper Deep scars of oil and metal at the end, and then washed with acetone. Before plating copper with 50% distilled water with 50% hydrochloric acid (weight ratio) cleaning fluid cleaning.