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防止退火件脱皮的介質,常用的有保护性爐气、生鉄屑等。我厂由于設备限制和生鉄加工件不多的緣故,无法采用这些介質。在低温退火0.1公厘的C20A冷拉鋼絲的时候,为了防止鋼絲脱皮,我們用黄砂和木炭粉配制了一种介質。我們用的黄砂是工业建筑用的黃砂,配制前用12孔/寸~2的篩子篩过,并在100～200℃的温度加以烘干。黄砂和木炭粉的体积比为2:1。退火的时候,把介質和經过清洗去油的鋼絲如图1那样装箱。装箱后按图2所示的工艺
Prevent annealing peeling material, commonly used protective gas, raw 鉄 debris and so on. I plant due to equipment constraints and raw material processing small pieces of sake, can not use these media. At a cold anneal of 0.1 mm C20A cold-drawn steel wire, we formulated a medium with yellow sand and charcoal powder to prevent wire peeling. The yellow sand we use is yellow sand for industrial construction. It is sieved through a 12-hole / 2-inch sieve before being prepared and dried at a temperature of 100-200 ° C. Yellow sand and charcoal powder volume ratio of 2: 1. Annealing time, the medium and after cleaning oil to the wire as shown in Figure 1 boxed. After packing according to the process shown in Figure 2