以中碳铬钼合金钢作为研究对象,通过相变点试验确定试验钢的淬火温度范围为904~954℃,最佳淬火温度为920℃。淬火后,该材料主要组织为均匀细小的针状马氏体和少量残余奥氏体;通过淬透性试验证明,淬硬层深度为150 mm,该衬板最厚部位约为123 mm,故该材料经920℃淬火后具有足够的淬透性。 In the carbon-chromium-molybdenum alloy steel as the research object, the phase transition point test was used to determine the quenching temperature range of the test steel was 904 ~ 954 ℃, the best quenching temperature was 920 ℃. After quenching, the material is mainly composed of small and uniform acicular martensite and a small amount of retained austenite. The hardenability test shows that the depth of the hardened layer is 150 mm and the thickest part of the lining is about 123 mm The material after quenching at 920 ℃ has sufficient hardenability.