谈超超临界火力发电厂机组主蒸汽管SA335-P92钢焊接工艺研究.pdfVIP

学兔兔 第1期 锅 炉 制 造 No．1 2012年1月 BOILER MANUFACTURING Jan．2012 文章编号：CN23—1249(2012)01—0054—05 超超临界火力发电厂机组主蒸汽管 SA335一P92钢焊接工艺研究 马 言 (广西壮族自治区特种设备监督检验院，广西南宁530219) 摘 要：简述了超超临界机组锅炉主蒸汽管SA335一P92钢的性能特点，并分析其焊接特性。为获得满足超 超临界火力发电机组主蒸汽管SA335一P92钢的焊接接头性能，详细介绍了应采取的焊接工艺措施。实践证 明，通过严格执行施焊工艺，控制现场施工环境，可以获得满足使用性能要求的焊接接头。 关键词：SA335一P92钢管；焊接；热处理 中图分类号：TG44 文献标识码：A Research on Welding Processes of SA335一P92 Steel Main Steam Hpes for Ultra—Supercritieal Generating Units in Large Thermal Power Plants Ma Yart (Guangxi Special Equipment Supervision and Inspection Institute，Nanning 530219，China) Abstract：The performance characteristics of SA335一P92 steel of boiler main steam pipes for ultra — supercritieal generating units was presented，and its weld ability was also analyzed．To obtain welding joint which meets performance requirements for ultra supercritical generating units，welding processes adopted were introduced in detail．Practice shows that welding joint which meets perform— ancc requirements can be ensured by performing strictly the welding processes and controlling the environment of construction site． Key words：SA335一P92 steel pipe；welding；heat treatment ℃，无法满足超临界机组发展的要求。目前在 0 引 言 SA335一P91的基础上开发了SA335～P92钢，由 于其材料在焊接性、强度及裂纹倾向等方面的特 随着我国火电以发展高效率、节能、低污染的 殊性，在锅炉现场焊接中如何保证焊缝质量达标，