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随着轧制工艺的不断改进,对轧制用的重要工具轧辊也提出苛刻的要求。譬如,从前对钢板轧制技术其着眼点放在轧机的大型化、高速连续化,即提高生产力上,而后又以连铸-连轧相结合的热装和直接轧制,以达到节能的目的。最近的重点是放在低温大压下的轧制操作上,因此,对所使用的轧辊不仅要求成本低、价格便宜,而且要具备在高温下耐磨、高硬度、高寿命的特点. 针对以上目的,日本最近研究出离心浇铸高铬铸铁轧辊来代替常规的锻钢或含合金的钢轧辊.该轧辊的化学成分为:含碳2.0～3.0%,10～25%,其它成分还有微量的锰、镍、钼,铬、
With the continuous improvement of the rolling process, the important tool roll for rolling also made demanding requirements. For example, in the past, the rolling technology of steel rolling plate was mainly focused on the large-scale and high-speed continuous rolling mill, that is to say, to increase productivity, and then to hot-roll and direct rolling combined with continuous casting and continuous rolling to save energy . The recent focus is placed on the rolling operation at low temperature and pressure, therefore, the use of the roll not only requires low cost, low price, but also have the characteristics of wear resistance, high hardness, high life at high temperature.For the above The purpose of Japan recently developed centrifugal casting high chromium cast iron roll instead of conventional forged steel or alloy steel roll.The chemical composition of the roll: carbon 2.0 to 3.0%, 10 to 25%, other components are trace Manganese, Nickel, Molybdenum, Chromium,