机械制造文摘-焊接分册
機械製造文摘-銲接分冊
궤계제조문적-한접분책
JIXIE ZHIZAO WENZHAI (HANJIE FENCE)
2015年
2期
24-29
,共6页
不锈钢电焊条%E312-XX型%γ+δ双相组织%σ相
不鏽鋼電銲條%E312-XX型%γ+δ雙相組織%σ相
불수강전한조%E312-XX형%γ+δ쌍상조직%σ상
stainless steel electrode%E312-XX type%γ+δduplex phase structure%σphase
探讨了影响E312－XX型不锈钢焊条工艺质量的多种因素。研究表明，E312－15和E312－25焊条具有短路过渡形态，E312－16焊条具有短路＋渣壁混合过渡形态，E312－17和E312－26焊条具有渣壁过渡形态。焊条熔敷金属δ相含量多达40％，在σ相敏感温度长期受热，σ化倾向严重；异种钢焊缝中较高的C含量对σ相的转变有一定的抑制作用，焊缝金属脆化倾向小。 E312－25和E312－26焊条分别克服了E312－15和E312－16焊条的工艺质量问题，但前者不能完全取代后者；E312－17焊条的工艺性最好，但对气孔敏感；E312－15、E312－25焊条焊缝的综合力学性能比E312－16、E312－17和E312－26的好。
探討瞭影響E312－XX型不鏽鋼銲條工藝質量的多種因素。研究錶明，E312－15和E312－25銲條具有短路過渡形態，E312－16銲條具有短路＋渣壁混閤過渡形態，E312－17和E312－26銲條具有渣壁過渡形態。銲條鎔敷金屬δ相含量多達40％，在σ相敏感溫度長期受熱，σ化傾嚮嚴重；異種鋼銲縫中較高的C含量對σ相的轉變有一定的抑製作用，銲縫金屬脆化傾嚮小。 E312－25和E312－26銲條分彆剋服瞭E312－15和E312－16銲條的工藝質量問題，但前者不能完全取代後者；E312－17銲條的工藝性最好，但對氣孔敏感；E312－15、E312－25銲條銲縫的綜閤力學性能比E312－16、E312－17和E312－26的好。
탐토료영향E312－XX형불수강한조공예질량적다충인소。연구표명，E312－15화E312－25한조구유단로과도형태，E312－16한조구유단로＋사벽혼합과도형태，E312－17화E312－26한조구유사벽과도형태。한조용부금속δ상함량다체40％，재σ상민감온도장기수열，σ화경향엄중；이충강한봉중교고적C함량대σ상적전변유일정적억제작용，한봉금속취화경향소。 E312－25화E312－26한조분별극복료E312－15화E312－16한조적공예질량문제，단전자불능완전취대후자；E312－17한조적공예성최호，단대기공민감；E312－15、E312－25한조한봉적종합역학성능비E312－16、E312－17화E312－26적호。
The several factors that influence the usability quality of E312-XX-type stainless steel electrode were discussed.The research shows that the electrodes with 15 and 25 coating type show short circuiting transfer mode,the electrode with 16 coating type shows the mixed transfer mode of short circuiting transfer and flux-wall guided transfer, the electrodes with 17 and 26 coating type show flux-wall guided transfer mode.The δ-phase contents are up to 40%in electrode deposited metal , whenσ-phase is long-term heated in sensitive temperature area, the tendency for sigma phase transformation is serious.The embrittlement tendency in dissimilar steel weld metal is relatively little because higher carbon content in weld metal can play a certain part to restrain the σphase.The usability quality problems of electrodes with 15 and 16 coating type are overcome respectively by the electrodes with 25 and 26 coating type, but the former can not completely replace the latter.The usability of e-lectrodes with 17 coating type is the best, but the sensitivity of the electrode porosity is existential.The compre-hensive properties of electrodes with 15 and 25 coating type are better than those of electrodes with 16,17 and 26 coating type.
