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高速钢的氧氮化处理(又称氧氮共渗),是近年来发展起来的化学热处理新工艺,在国外得到了广泛应用,国内正在积极推广,普遍收到了良好效果。氧氮化处理的优点是,提高抗咬合、抗磨粒磨损性能,提高耐腐蚀性,因而显著地延长了高速钢刀具的使用寿命。另外,所需设备简单,处理时间较短,操作中无有害物质产生。现将氧氮化处理简介如下。一、原理高速钢刀具的氧氮化处理,介质是甲酰胺或氨水,也可用氨气和水蒸气组成。我厂使用GB631—65规定的氨水,其NH_3含量为25～
High-speed steel oxynitridation (also known as oxynitridation) is a chemical heat treatment developed in recent years, new technology has been widely used abroad, the domestic is actively promoting, generally received good results. The advantage of oxynitriding is that it increases the anti-seize, abrasive wear resistance and corrosion resistance, thereby significantly extending the service life of HSS tools. In addition, the required equipment is simple, shorter processing time, no harmful substances in the operation. Now oxynitride treatment is as follows. First, the principle of high-speed steel cutting tool of oxygen and nitrogen treatment, the media is formamide or ammonia, ammonia and water vapor can also be used. I plant GB631-65 provisions of ammonia, the NH3 content of 25 ~