厚规格耐磨钢厚度方向的硬度分布与控制  

Hardness profile and control in thickness direction of thick wear-resistant steel

作　　者：沈彬彬 方金林 Shen Binbin;Fang Jinlin(Technology Center,Laiwu Branch,Shandong Iron and Steel Group,Jinan Shandong 271104,China)

机构地区：[1]山东钢铁集团莱芜分公司技术中心,山东济南271104

出　　处：《金属热处理》2023年第8期205-208,共4页Heat Treatment of Metals

摘　　要：通过开发淬火机冷却控制程序,提高了淬火机高压段冷却能力。通过不同工艺下厚规格耐磨钢淬火过程温度测定,结合显微组织及厚度方向硬度的变化规律,系统研究了淬火温度和冷却速度对钢板厚度方向硬度的影响。结果表明,增加淬火机高压段冷却水流量可以明显提高冷却速度,钢板厚度中心位置出现马氏体-贝氏体复相组织,有效提高了耐磨钢厚度方向的硬度。Cooling capacity of high-pressure section of quenching machine was improved by developing the cooling control program.Hardness profile in the thickness direction of thick wear-resistant steel plates were systematically studied through temperature measurement during quenching under different processes,combined with the variation of microstructure and thickness direction hardness.The results show that increasing the cooling water flow rate in the high-pressure section of the quenching machine can significantly improve the cooling speed.The martensite bainite duplex structure appears in the center of the steel plate thickness,effectively improving the hardness of the wear-resistant steel in the thickness direction.

关 键 词：厚规格耐磨钢 淬火 冷却速度 硬度 

分 类 号：TG142.1[一般工业技术—材料科学与工程]