船海工程
船海工程
선해공정
Ship & Ocean Engineering
2015年
5期
75-79
,共5页
复合管道%焊接工艺%焊缝性能
複閤管道%銲接工藝%銲縫性能
복합관도%한접공예%한봉성능
lined-pipe%welding process%welding property
针对焊接时管线的焊缝和热影响区的化学成分不均匀性、组织偏析等缺陷,制定相应的试验方案. 开发出新的焊接工艺,运用MIG焊接方法、选取相应的焊丝和混合气体作为保护气体,确定最佳焊接参数. 焊接接头的焊接工艺评定试验表明,以此工艺完成的复合管道焊接符合海底输气管道的理化及机械性能要求.
針對銲接時管線的銲縫和熱影響區的化學成分不均勻性、組織偏析等缺陷,製定相應的試驗方案. 開髮齣新的銲接工藝,運用MIG銲接方法、選取相應的銲絲和混閤氣體作為保護氣體,確定最佳銲接參數. 銲接接頭的銲接工藝評定試驗錶明,以此工藝完成的複閤管道銲接符閤海底輸氣管道的理化及機械性能要求.
침대한접시관선적한봉화열영향구적화학성분불균균성、조직편석등결함,제정상응적시험방안. 개발출신적한접공예,운용MIG한접방법、선취상응적한사화혼합기체작위보호기체,학정최가한접삼수. 한접접두적한접공예평정시험표명,이차공예완성적복합관도한접부합해저수기관도적이화급궤계성능요구.
Aimming at the welding defects of tissue segregation and uneven chemical composition of the welding and heat af-fected zone for the submarine gas pipeline, the corresponding test plan is formulated.According to the welding difficulty of the mechanical clad pipe, the new welding process is developed, in which the MIG welding method is applied, selecting Incoloy625 nickel base welding wire, using the Ar+20%He mixed gas as a protective gas.The optimal welding parameters are determined. The welding procedure qualification test of the composite pipe welding joint showed that the welding can meet the requirements of physical and chemical properties and mechanical properties of the submarine gas pipeline.
