武昌车辆工厂试制、生产的UCZ—650型三角活塞转子发动机和一吨叉式车,有不少零件需用18CrMnTi、20Cr、40Cr、45号钢、A_3钢、NiCrMoCu合金铸铁和MoCuV球墨铸铁等材料制造。这些零件,要求有较高的表面硬度、耐磨性能和疲劳强度,以往采用渗碳、高频等淬火工艺实现。由于有的零件形状复杂,存在变形、开裂和淬火不匀等问题,影响产品的质量。从1974年开始,在30瓩离子氮化炉上对上述材料的零件进行氮化处理的试验工作。 There are many spare parts for 18CrMnTi, 20Cr, 40Cr, 45 steel, A_3 steel, NiCrMoCu alloy cast iron and MoCuV ductile iron etc., which are trial-produced by Wuchang Vehicle Factory and produced by UCZ-650 type triangular piston engine. manufacture. These parts, require a higher surface hardness, wear resistance and fatigue strength, past the use of carburizing, high frequency quenching process to achieve. Due to the complex shape of some parts, there are deformation, cracking and uneven quenching and other issues, affecting the quality of the product. From 1974 onwards, in the 30 瓩 ion nitriding furnace on the parts of the above materials nitriding test work.