论文部分内容阅读
一、试验目的 为了延长高速钢刃具使用寿命,提高切削效率,用气体软氮化代替硫、氮共渗的工艺方法,了解气体软氮化中各因素对不同指标的影响,摸索较好的生产条件,为此,安排了这次试验。 试片材料为W_(18)Cr_4V,尺寸20×10×15毫米,表面光洁度(?)_(10)。设备为RJJ—25型渗碳炉。 二、试验方案 1.考察指标: 氮化深度(2～4丝为好) 脆性(Ⅰ、Ⅱ、Ⅲ、Ⅳ级) 硬度(HV越高越好)
First, the purpose of the experiment In order to extend the service life of high-speed steel cutting tools to improve cutting efficiency, with gas nitrocarburization instead of sulfur, nitrogen infiltration process, to understand the gas nitrocarburizing the various indicators of different indicators, to explore better production Conditions, for which reason, arranged for this test. The specimen is W_ (18) Cr_4V, the size is 20 × 10 × 15mm and the surface finish (?) _ (10). Equipment for RJJ-25-type carburizing furnace. Second, the test program 1 inspection indicators: depth of nitriding (2-4 wire is good) brittle (Ⅰ, Ⅱ, Ⅲ, Ⅳ grade) hardness (HV is as high as possible)