扁丝钎料广泛应用于眼镜及饰品行业 ,其生产工艺基本上都是由圈丝经过轧制而成的 ,因而产生加工应力与色泽问题。经过几年的探索和试验 ,采用气体保护软化工艺 ,不仅消除了加工应力 ,而且提高了丝材表面质量和生产效率。1　原　　理在常压 ,580℃ 6 50℃和催化剂作用下 ,液氨分 Flat wire solder is widely used in eyewear and jewelry industry, the production process are basically formed by the ring wire rolled, resulting in processing stress and color issues. After several years of exploration and testing, using gas softening protection process, not only eliminates the processing stress, but also improve the wire surface quality and production efficiency. 1 Principle At atmospheric pressure, 580 ℃ 6 50 ℃ and the catalyst, liquid ammonia