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一、概况近年来,随着高强度调质钢板需要量不断增加、辊底式热处理炉需要量也不断增加。为了节约Cr、Ni合金元素,保证使用要求,在4200毫米特厚板轧机上采用了一机部颁发的耐热钢铸件技术标准中规定的Cr19Mn2Si2N钢。铬锰氮硅钢具有良好的室温、高温机械性能,高温抗氧化性能以及冲击韧性等;并在950℃时不产生弯曲及裂纹,其中抗氧化性能虽比Ni—Cr钢差,但可以满足使用要求。
First, an overview In recent years, with the increasing demand for high-strength quenched and tempered steel, roller-type heat treatment furnace needs also continue to increase. In order to save Cr, Ni alloying elements, to ensure the use of requirements, in 4200 mm thick plate mill using a machine-made heat-resistant steel castings specified in the technical standards Cr19Mn2Si2N steel. Chromium manganese nitrogen nitrogen steel has good room temperature, high temperature mechanical properties, high temperature oxidation resistance and impact toughness; and does not produce bending and cracking at 950 ℃, which antioxidant performance than Ni-Cr steel, but to meet the requirements .