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前言工业热处理电炉中的炉用构件,在五十年代主要采用苏联钢号Я3С(3Cr18Ni25Si2),该钢种具有良好的耐热性能及其它综合性能。但镍是我国当前稀缺,需要节约的元素。为找代用材料,我厂于1962年开始试验无镍、少镍的含氮炉用耐热钢——铬锰氮、铬锰氮镍、铬镍氮。这些钢主要是奥氏体组织,个别含有少量铁素体,具有较好的耐热性能及其它综合性能,在1000℃以下及1150℃以下工作,能够比较满意地代替高镍铬耐热钢,用于热处理电炉的构件。其化学成份机械性能及抗氧化性见表1: 工艺论述一、炉料与铁合金的要求 1.炉料可采用低磷废钢、废合金钢、废电热丝、废镍基合金……等。
Preface Industrial furnace heat treatment furnace components, mainly used in the fifties Soviet steel Я3С (3Cr18Ni25Si2), the steel has good heat resistance and other comprehensive performance. However, nickel is currently scarce in our country and needs to be economized. In order to find substitute materials, our factory began to test the heat-resistant steels with chromium-manganese, chromium-manganese-nickel-nickel and chromium-nickel-nitrogen in furnaces with no nickel and less nickel in 1962. These steels are mainly austenitic and contain a small amount of ferrite individually, have good heat resistance and other comprehensive properties, and work below 1000 ° C. and below 1150 ° C., which can satisfactorily replace the high-Ni-Cr heat- Components for heat treatment of electric furnaces. The chemical composition of the mechanical properties and oxidation resistance in Table 1: Process Description A charge and ferroalloy requirements 1 charge can be low-phosphorus scrap, scrap alloy steel, waste heating wire, scrap nickel-based alloy ... ... and so on.