针对国内手术器械铆钉长期以来一直存在容易被腐蚀以及经硝酸钝化后与被铆接件存在色差等问题,对国外发达国家(德国和美国)手术器械铆钉材料的化学成分、硬度、非金属夹杂物及显微组织进行了分析。结果表明：由于国内手术器械铆钉一直采用1Cr13或2Cr13钢制造,而国外发达国家大都采用易切削铁素体或奥氏体不锈钢制造,因而后者的耐腐蚀性能更强；另外易切削铁素体和奥氏体不锈钢中都含有大量的硫化物,造成钢表面反光能力下降,使手术器械经硝酸钝化后其铆钉颜色与被铆接件的颜色一致,消除了色差；通过采用易切削不锈作为铆钉材料可同时解决国内铆钉耐腐蚀性差和存在色差的问题。

Chemical compositions, hardness, non-metallic inclusions and microstructure of the rivets of surgery instruments made in foreign advanced countries (Germany and USA) were analyzed in order to solve the problem of easily being etched and existence of color difference between rivets and the riveted parts after nitric acid passivating for the domestic surgery instruments. The results show that in our country surgery instruments were made of 1Cr13 or 2Cr13 steel. However, they were made of easy-machining ferrite or austenite stainless steel in the foreign advanced countries. It was obvious that the corrosion resistance of the easy-machining ferrite or austenite stainless steel was more excellent than 1Cr13 or 2Cr13 steel. At the same time, there were a lot of sulphide inclusions which led to poor light reflection capability of light on the surface in the easy-machining ferrite or austenite stainless steel, so it could eliminate the color difference and make the color of the rivets accordance with that of the riveted parts. Problems of corrosion resistance and color difference were solved at the same time by adopting ferrite or austenite stainless steel as the raw material for the surgery instruments.