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纯铜、锡磷青铜、铍青铜等铜件在空气炉中加热,极易出现氧化、局部发黑、花斑等问题,严重影响零件外观质量或使零件报废。采用下述工艺方法能防止上述现象的发生。取小铁箱一只,石棉布一块,纯铝皮或软铜皮一块(厚0.2～0.4mm),木炭屑或生铁屑适量(以上均须无油污或脏物),放入150～300℃炉内烘10～20分钟,以驱走潮气,然后取出冷至室温备用。
Pure copper, tin phosphorus bronze, bronze and other copper pieces in the air furnace heating, prone to oxidation, local black, piebald and other issues, seriously affect the appearance of the quality of parts or parts scrapped. The following process can prevent the occurrence of the above phenomenon. Take a small iron box, a piece of asbestos cloth, pure aluminum or soft copper skin a (thickness 0.2 ~ 0.4mm), charcoal or pig iron chips appropriate amount (above all without oil or dirt), into the 150 ~ 300 ℃ The furnace bake 10 to 20 minutes to drive away the moisture, and then remove the cold to room temperature spare.