Q345R中厚钢板恢复性能热处理工艺试验  

Testing on Heat Treatment Procedure for Restorability of Q345R Medium Plate

作　　者：王智慧[1] 徐成[1] 张淑雁[1] 刘源[1] 王亮[1] 

机构地区：[1]甘肃蓝科石化高新装备股份有限公司,甘肃兰州730070

出　　处：《石油化工设备》2016年第4期18-22,共5页Petro-Chemical Equipment

摘　　要：压力容器制造过程中,当某材料供货状态遭到破坏时,需要对此材料进行恢复或改善性能热处理。对于容器制造厂而言,材料恢复或改善性能热处理工艺的确定较为困难。对正火态Q345R中厚度钢板试样进行不同的恢复或改善性能热处理试验,从微观组织和力学性能等方面研究分析不同热处理工艺的合理性和可行性。试验结果表明,合适的二次正火工艺可恢复Q345R中厚度钢板的材料性能,而经正火+水冷热处理后材料性能下降较多,若再次经退火或高温回火可改善材料性能。During the manufacturing process of pressure vessel steel,when the delivered condition of material was damaged,the heat treatment for recovery or improvement material performance should be conducted.But it is difficult for the vessel manufacturer to drawing up the heat treatment procedure.Different heat treatment procedures has been conducted on the normalized Q345 R medium plate,the reasonability and feasibility of heat treatment procedure was analyzed by microstructure examination and mechanical property test.The results show that the material property can be recovered by suitable normalizing procedure,after conducted the normalized water-cooled heat treatment the material property was decreased in large amplitude,but the material property can be improved by anneal or high-temperature tempering.

关 键 词：Q345R 正火 恢复性能 热处理 微观组织 力学性能 

分 类 号：TQ050.5[化学工程] TG45[金属学及工艺—焊接]