论文部分内容阅读
10Cr9Mo1VNb是一种改进型9Cr-1Mo钢,美国牌号为T91钢(下文简称T91)。T91是超临界压力火力发电机组的理想用材。它具有热膨胀系数低,导热性好的优点,并有较好的抗氧化性能、高温持久强度、高温抗蠕变性能。焊接性能和工艺性能良好,对应力腐蚀开裂不敏感,并且生产成本较低。2002年,中国国家电力公司发布了《T91/P91钢焊接工艺导则》,导则适用于手工钨极氩弧焊(TIG)和焊条电弧焊。国内P91/T91焊接采用TIG焊+焊条电弧
10Cr9Mo1VNb is an improved 9Cr-1Mo steel, the United States grade T91 steel (hereinafter referred to as T91). T91 is the ideal material for supercritical pressure thermal power unit. It has the advantages of low thermal expansion coefficient, good thermal conductivity, and has good oxidation resistance, high temperature lasting strength, high temperature creep resistance. Good welding and process properties, insensitive to stress corrosion cracking, and low production costs. In 2002, China National Electric Corporation released the “T91 / P91 Steel Welding Processes” guidelines for manual TIG welding and electrode arc welding. Domestic P91 / T91 welding TIG welding + electrode arc