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9Cr18不锈钢是制造精密量具、轴承以及医疗器械的主要材料。这种钢材所积累的工艺资料远远不如Cr13型和1Cr18Ni9Ti等不锈钢多,因此,很多热加工的问题,至今仍未得到妥善的解决,阻碍了产品质量的提高。目前在生产中感到棘手而难以解决的有下列问题:(1)锻件采用相同的工艺退火后,经常得到相差悬殊的硬度和组织,有时硬度高达HB320;(2)用相同的热处理工艺但产品的机械性能和使用寿命明显不同;(3)加
9Cr18 stainless steel is the manufacture of precision measuring tools, bearings and medical equipment, the main material. The process information accumulated by this kind of steel is far less than stainless steel such as Cr13 type and 1Cr18Ni9Ti. Therefore, many problems of thermal processing have not yet been properly solved, which hinders the improvement of product quality. At present, the following problems are troublesome and difficult to be solved in production: (1) Forgings with the same technology after annealing often have different hardness and microstructure, sometimes up to HB320; (2) The same heat treatment process but the product Significantly different mechanical properties and service life; (3) plus