摘要
T/P91钢是用钒、铌元素微合金化并控制氮元素含量的9%Cr-1%Mo系低碳马氏体型钢,在560℃~610℃温度范围内具有优异的高温强度和蠕变性能,同时具有良好的抗腐蚀性、抗氧化性和耐高压氢气性能,广泛应用于电厂锅炉中的过热器和再热器管道,和蒸馏、裂化装置及炼油厂内高温、高压、临氢设备的建造。T/P91钢通过合理的合金设计、先进的冶炼技术和严格的热处理保证其优异的高温性能。工程焊接要点为焊前预热、焊后热处理控制、焊接线能量控制,及焊接材料和最终无损检测方式的选择。对T/P91钢及其焊接、焊接热处理和无损检测的工艺要点进行归纳分析。
T/P91 steel is with vanadium,and NB elements micro alloy of and control nitrogen elements content of 9%Cr-1%Mo Department low carbon horse's body steel,in 560℃ ~ 610℃ temperature range within has excellent of high temperature strength and creep variable performance,while has good of anticorrosion sex,and anti-oxidation sex and resistance high-pressure hydrogen performance,widely application Yu power plant boiler in the of overheating device and again hot device pipeline,and distillation,and cracking device and the refinery factory within high temperature,and high-pressure,and Pro hydrogen equipment of built.T/P91 alloys of steel by rational design,advanced technology and strict heat treatment to ensure its excellent high temperature performance.Welding essentials for preheating before welding,postweld heat treatment control,welding heat input control,and choice of welding material and eventually non-destructive testing methods.This paper analyses T/P91 steel and the main points of its welding,welding heat treatment and non-destructive testing technology.
出处
《中国化工装备》
CAS
2015年第3期13-23,共11页
China Chemical Industry Equipment
