凿岩钎具用中空钢ZK55SiMnMo相变研究  

Study on Phase Transformation of Hollow Steel ZK55SiMnMo for Rock Drilling Tools

作　　者：刘建 花含平 杨庚朝 LIU Jian;HUA Hanping;YANG Gengchao(Xiangtan Iron and Steel Group Co.,Ltd.,Xiangtan 411101,China)

机构地区：[1]湘潭钢铁集团有限公司,湖南湘潭411101

出　　处：《金属材料与冶金工程》2022年第4期13-17,共5页Metal Materials and Metallurgy Engineering

摘　　要：本文利用Imager D1m金相显微镜、C-STRAIN传感器及MMS-200热模拟试验机对此钢种的连续冷却相变进行了实验研究,模拟了粗轧和精轧两道次轧制,研究了轧制参数和冷却速率对相变组织的影响;进行了高温脆性(第二、第三高温脆性)温度区间拉伸试验,分析了高温拉伸温度与断面收缩率关系。测得实验钢的CCT曲线及相变转变温度为Ac1=778℃,Ac3=810℃,实验研究和分析结果可对该钢种的生产起到一定的指导作用。In the paper,the continuous cooling phase transformation of this hallow steel is studied by using Imager D1m metallographic microscope,C-STRAIN sensor and MMS-200 thermal simulation testing machine.And the effects of the two-pass rolling parameters and cooling rate of rough rolling and finishing rolling on the phase transformation structure were simulated.The tensile test of high-temperature brittleness(the second and third high-temperature brittleness)temperature range was carried out,and the relationship between high temperature tensile temperature and section shrinkage was analyzed.The CCT curve and phase transformation temperature are Ac1=778℃,Ac3=810℃.The experimental research and analysis results can play a guiding role in the production of the steel.

关 键 词：中空钢 ZK55SiMnMo 相变组织 冷却速率 CCT曲线 

分 类 号：TG142.1[一般工业技术—材料科学与工程]