火电厂主蒸汽管道原材料质量监理案例分析 - 中国电机工程学会.pdfVIP

2009 年中国电机工程学会年会 火电厂主蒸汽管道原材料质量监理案例分析 胡军志，曾凤鸣，胡恒康，潘志强 中国电能成套设备有限公司设备监理部，北京鼓楼外大街26 号，100011 Case Analysis of Quality Control about Pipe Material Of Main Steam System in Thermal Power Plant Jun-zhi Hu, Feng-ming Zeng,Heng-kang Hu, Zhi-qiang Pan China Power Complete Equipment Co., LTD, No. 26 Gulouwai Street,Beijing, China, 100011 力，这就要求其原材料的成分、性能等相当优异 ABSTRACT:For the current chaos of domestic pipe [1] 。目前，火力发电厂主蒸汽管道用材一般为 market with the frequent occurrence of raw material defects P91 或P92 ，P91 材料具有热强性好（达到了奥 of the four piping system in thermal power plant, it is 氏体钢的水平）、强韧性高、淬透性好（可空淬 essential to increase the quality control of raw material of 至200mm ）、可焊性良、导热率高、线胀系数小、 pipe, to strengthen the sampling inspection and pay close 抗蚀性和价格适中等优点[2]，能满足这种要求。 attention to the product quality from the source. This paper 但是，由于目前国内管道市场比较混乱，假冒伪 analyzes the metallurgical structure of certain P91 劣、以次充好现象经常发生，将带来严重的问题， mainsteampipes with high hardness. Through the analysis 设备运行时达不到设计的强度和时间，造成不可 of this material, some defects such as non-uniform, 弥补的损失。针对这种情况，国家电监会于2006 inclusions, cracks and holes are found in the structure. The 发布了601 号文件-- 《关于对假冒国外锅炉钢管 crassi Martensite causes partial high hardness of the pipes. 使用情况进行检查消除隐患的通知》[3] ，2009 The result shows that the certain sampling inspection is 年3 月发布了办安全[2009]11 号文件-- 《关于进 greatly necessary in the pipe material surveillance, besides 一步加强在建及运行电厂高温高压管道安全管 the conventional record review and witness in site. [4]，强调了进一步加强在建及运行电 理的通知》 厂高温高压管道安全管理。然而，四大管道原材 KEY WORD: Thermal power plant, Main steam pipe, 料缺陷问题还是时有发生，这就要求有关各方切 Raw material, Quality control