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一、概述大多数铜及铜合金带材、线材在压力加工工艺的最终工序须进行光亮热处理,以期获得材料必需的力学性能的同时,得到色泽光亮洁净的表面。我厂采用将液氧通过自制的发生装置(氨分解炉),并经干燥处理后直接得到氢氮混合气体,实现了在保护气氛中光亮退火。几年来的生产试验表明,和低真空、氮气保护比较,分解氨属化学活性极强的气体,它的高度还原能力可使黄铜光亮退火要求的气氛露点较之中性气氛提高30℃。那意味着允许在一定范围内降低气氛的纯度,而不破坏其氧化-还
First, an overview Most copper and copper alloy strip, wire in the final process of the pressure processing process to be bright heat treatment, in order to obtain the necessary mechanical properties of the material at the same time, get bright and clean color of the surface. I plant the liquid oxygen through the home of the occurrence of the device (ammonia decomposition furnace), and directly after drying the hydrogen-nitrogen gas mixture to achieve a bright annealing in the protective atmosphere. Years of production tests show that, compared with low vacuum and nitrogen protection, ammonia decomposes extremely chemically highly active gas and its high reduction ability enables the dew point of the atmosphere required for the bright annealing of brass to be increased by 30 ° C compared to the neutral atmosphere. That means allowing to reduce the purity of the atmosphere to a certain extent without destroying its oxidation - still