T91/P91钢焊接材料的选择及其应用  

Selection and application of welding consumables for T91/P91 steel

作　　者：孙咸[1] 

机构地区：[1]太原理工大学焊接材料研究所,山西太原030024

出　　处：《电焊机》2012年第9期5-11,共7页Electric Welding Machine

摘　　要：分析了T91/P91钢的焊接性,探讨了该钢焊接材料的选用原则,介绍了该钢焊接材料的种类及其应用。结果表明,该钢焊接材料的选用可以采用"准成分匹配"原则,即尽可能使焊缝的主要化学成分接近母材,保证接头获得最佳的力学性能(含高温性能)和焊接性。该钢焊接材料的种类多达五种,采用专用药芯焊丝FCAW打底+实芯焊丝GMAW填充的新工艺,优势明显。不同管径和壁厚的T91/P91钢管,分别采用匹配的焊接材料和合理的工艺,均在不同的工程中获得成功应用。T91/P91钢专用药芯焊丝焊是颇具发展前景且期待完善的焊接新材料。The weldability of T91/P91 steel was analyzed,the selection principle of the steel welding consumables was discussed and the types and applications of the steel welding consumables were introduced.The results show that the welding consumable selection of T91/P91 steel can use ＂quasi-element matching＂ principle,that is to make the main chemical composition of the weld metal close to base metal as far as possible, and to guarantee the welded joint obtaining the best mechanical properties （including high temperature properties） and weldability.There are five kinds of welding consumables used in T91/P91steel,the new welding technology of backing welding by FCAW plus filling welding by GMAW has obvious advantages.The applications of matching welding consumables and appropriate welding technology in pipeline welding are successful.The special flux cored wire for T91/P91 steel is a new welding consumable with development prospect and need improvement.

关 键 词：焊接材料 T91/P91钢 选择及应用 

分 类 号：TG457.1[金属学及工艺—焊接]