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在确保钢材淬火后表面硬度的前提下,降低钢的淬透性的主要办法有:1.尽量减少钢中增加淬透性的元素,如铬、镍、锰、硅等。2.需要进行正确的冶炼和脱氧,使钢具有细晶粒。脱氧时用铝作脱氧剂,也可加入钛、铝等变质剂,细化钢的晶粒。3.加入能降低奥氏体稳定性的合金元素。在生产中可采用一种方法或几种方法同时并用。1967年以来,在实验室内用碱性感应炉先后共冶炼100余炉次,就 C、Si、Mn、P、S 以及变质剂 Ti、Al、V、Nb、Te、R 等元素
In ensuring the surface hardness of quenched steel under the premise of reducing the hardenability of the steel main methods are: 1. To minimize the increase of hardenability steel elements, such as chromium, nickel, manganese, silicon and so on. 2. The need for proper smelting and deoxidation, the steel has fine grain. Deoxidation with aluminum as a deoxidizer, you can also add titanium, aluminum and other modifiers, refined steel grain. 3. Add alloying elements that reduce austenite stability. In the production of a method or methods can be used simultaneously. Since 1967, a total of more than 100 heats have been smelted in an alkaline induction furnace in the laboratory. The elements such as C, Si, Mn, P, S and the modifiers Ti, Al, V, Nb, Te and R