热处理对渣油加氢装置用TP347H炉管微观组织与高温性能的影响  

Effects of Heat Treatment on Microstructure and High Temperature Performance of TP347H Furnace Tube for Residue Hydrogenation Unit

作　　者：潘平伟 王坤 张杰 沈诚飞 佴启亮 高亚龙 PAN Pingwei;WANG Kun;ZHANG Jie;SHEN Chengfei;NAI Qiliang;GAO Yalong(Zhejiang Jiuli Hi-Tech Metals Co.,Ltd.,Huzhou 313018,China)

机构地区：[1]浙江久立特材科技股份有限公司,浙江湖州313018

出　　处：《热加工工艺》2022年第6期146-148,152,共4页Hot Working Technology

摘　　要：采用金相显微镜、扫描电子显微镜与高温拉伸试验等方法,研究了不同热处理温度对渣油加氢装置用TP347H炉管微观组织与高温拉伸性能的影响。结果表明,随着热处理温度的升高,TP347H微观组织平均晶粒尺寸逐渐变大,组织中弥散的颗粒状碳化物未出现消融,高温屈服强度逐渐下降,高温抗拉强度基本保持不变,说明细晶强化是影响高温屈服强度的主要因素。渣油加氢装置用TP347H炉管在满足ASTM A312标准晶粒度7级的同时,为提高高温屈服强度,5~7级晶粒度为最佳晶粒度等级。The effects of different heat treatment temperatures on the microstructure and high temperature tensile properties of TP347H furnace tube for residue hydro treating unit were studied by means of metallographic microscope,scanning electron microscope and high temperature tensile test. The results show that, with the increase of heat treatment temperature, the grain of TP347H microstructure gradually becomes coarser, the dispersed granular carbides in the microstructure do not melt, the yield strength at high temperature decreases gradually, and the tensile strength at high temperature basically remains unchanged. It is concluded that fine grain strengthening is the main factor affecting the yield strength at high temperature. When the TP347H furnace tube used in the residual oil hydrogenation unit meets the ASTM A312 standard grain size 7 grade, In order to improve the yield strength at high temperature, the grain size of grade 5-7 is the best grade.

关 键 词：热处理温度 TP347H钢 高温性能 晶粒度 

分 类 号：TG161[金属学及工艺—热处理] TG142.25[金属学及工艺—金属学]