手表是用量很大的计时仪表,微型电机亦是仪器仪表中常用的部件。长期来,国内外普遍采用无磁性的镍铬奥氏体不锈钢作表壳和微型耐蚀电机壳等另件,这类钢不仅消耗大量镍,而且切削加工困难,严重阻碍手表、微电机等产量的提高。目前已采用的往这类钢中添加易切削元素“硫”的改进办法会引起防锈性能和热加工性下降和成本提高,且作手表壳时防磁性能仍较差,对于第三代电子手表问题尤为严重。在 Watch is a large amount of timing instruments, micro-motor is also commonly used in instrumentation components. For a long time, non-magnetic nickel-chromium austenitic stainless steel and non-magnetic stainless steel shell are commonly used both at home and abroad. Such steels not only consume a large amount of nickel, but also have difficulty in cutting, which seriously hinders the production of watches, micro-motors and the like Increase in production. Currently used to add such cutting steel to improve the element “sulfur” will cause anti-rust performance and hot workability decreased and cost increases, and when the watch case when the magnetic properties are still poor for the third generation of electronic watches The problem is particularly serious. in