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9.GCr15轴承钢碳化物超细化工艺及其组织形态和性能的研究——杨绍蓉(洛阳轴承研究所)将 GCr15钢加热至 Acm 以上并适当保温,以溶解全部碳化物,然后以不同方式冷却获得马氏体(并立即等温退火)、珠光体或贝氏体高度弥散的组织,作为淬火前的预备组织。采用不同的淬火工艺,使具备这三种预备组织的试样获得相近的硬度。其中经珠光体细化和贝氏体细化的两组,还增加了中频感应快速加热淬火处理。另外,还采用一组常规球化退火后电炉加热淬、回火后的
9.Cr15 bearing steel carbide ultrafine process and its microstructure and properties of research - Yang Shaorong (Luoyang Bearing Research Institute) GCr15 steel heated to Acm above and appropriate insulation to dissolve all the carbide, and then cooling in different ways Martensite (and immediately isothermally annealed), pearlite or bainite highly dispersed tissue is obtained as a pre-quenched tissue. The use of different quenching process, so that with these three kinds of preparation of the sample obtained similar hardness. The refined pearlite and bainite refinement of the two groups, but also increased the frequency induction rapid heating quenching. In addition, also used after a group of conventional ball annealing furnace quenching, tempering