Bakin Karfe 904L 1.4539

Daidaitaccen matakan walda don wannan matakin ƙarfe sune:

• TIG-welding
• MAG-Welding Solid Waya
• Arc Welding (E)
• Laser Bean Welding
• Waldawar Arc (SAW)

Lokacin zabar karfen filler, dole ne a la'akari da damuwa na lalata, haka nan.Yin amfani da ƙarfe mai filaye mafi girma na iya zama dole saboda simintin simintin ƙarfe na walda.A preheating ba lallai ba ne don wannan karfe.Maganin zafi bayan walda ba al'ada ba ne.Ƙarfe na Austenitic kawai suna da kashi 30 cikin 100 na ƙayyadaddun yanayin zafi na karafa maras allo.Ma'anar haɗakar su ya yi ƙasa da na ƙarfe maras allo don haka austenitic karafa dole ne a yi walda tare da ƙananan shigarwar zafi fiye da waɗanda ba a haɗa su ba.Don guje wa ɗumamawa ko ƙonewa ta siraran zanen gado, dole ne a yi amfani da saurin walda mafi girma.Faranti na baya-bayan jan ƙarfe don ƙin kin zafi da sauri suna aiki, yayin da, don guje wa fasa a cikin ƙarfen solder, ba a ba da izinin yin amfani da farantin baya na jan ƙarfe ba.Wannan karfe yana da mafi girman ƙididdigewa na haɓakawar thermal kamar ƙarfe mara ƙarfi.Dangane da mafi munin yanayin zafi, dole ne a yi tsammanin babban murdiya.A lokacin walda 1.4539 duk hanyoyin, wanda aiki a kan wannan murdiya (misali baya-mataki jerin waldi, waldi alternately a kan ɓangarorin da biyu-V butt weld, aiki na biyu welders lokacin da aka gyara ne daidai da manyan) dole ne a mutunta musamman.Don kauri samfurin sama da 12mm dole ne a fi son waldar butt biyu-V maimakon walƙiyar butt-V guda ɗaya.Matsakaicin kusurwa ya kamata ya zama 60 ° - 70 °, lokacin amfani da MIG-welding game da 50 ° sun isa.Ya kamata a kauce wa tarin walda.Dole ne a liƙa welds ɗin tare da ɗan gajeren nisa daga juna (ya fi guntu da waɗannan naƙasassun ƙarfe waɗanda ba a haɗa su ba), don hana nakasu mai ƙarfi, raguwa ko walƙiya.Ya kamata a niƙa takin daga baya ko kuma a ƙalla su kasance marasa tsattsauran ramuka.1.4539 dangane da austenitic weld karfe da kuma tsananin zafi shigar da jaraba don samar da fasa zafi ya wanzu.Za'a iya kulle jarabar fashewar zafi, idan ƙarfen weld ɗin ya ƙunshi ƙaramin abun ciki na ferrite (delta ferrite).Abubuwan da ke cikin ferrite har zuwa 10% suna da tasiri mai kyau kuma baya shafar juriyar lalata gabaɗaya.Dole ne a welded Layer mafi sirara kamar yadda zai yiwu (Tsarin ƙwanƙwasa igiya) saboda mafi girman saurin sanyaya yana rage buri zuwa fashe mai zafi.Dole ne a yi marmarin sanyaya da sauri yayin walda kuma, don guje wa rauni ga lalatawar intergranular da embrittlement.1.4539 ya dace sosai don waldawar katako na Laser (weldability A daidai da bulletin DVS 3203, sashi na 3).Tare da nisa mai walƙiya ƙasa da 0.3mm bi da bi 0.1mm kauri samfurin ba lallai ba ne.Tare da manyan ramukan walda, ana iya amfani da irin wannan ƙarfen filler.Tare da guje wa hadawan abu da iskar shaka a cikin kabu surface Laser katako waldi ta m backhand waldi, misali helium a matsayin inert gas, da waldi kabu ne kamar lalata resistant kamar tushe karfe.Haɗarin fashewa mai zafi don ɗinkin walda ba ya wanzu, lokacin zabar tsari mai dacewa.1.4539 ne alos dace da Laser katako fusion yankan tare da nitrogen ko harshen wuta yankan tare da oxygen.Yanke gefuna kawai suna da ƙananan wuraren da zafi ya shafa kuma gabaɗaya ba su da fashewar mirko don haka suna da kyau.Yayin zabar hanyoyin da suka dace, za'a iya canza gefuna na fusion ɗin kai tsaye.Musamman, ana iya walda su ba tare da wani ƙarin shiri ba.Duk da yake sarrafa kayan aikin bakin karfe kawai kamar gogayen karfe, na'urorin pneumatic da sauransu ana ba da izini, don kada a yi haɗari da wuce gona da iri.Ya kamata a yi watsi da yin alama a cikin yankin kabu na walda tare da ƙwanƙwasa mai laushi ko zafin jiki mai nuna crayons.Babban juriya na lalatawar wannan bakin karfe yana dogara ne akan samuwar wani abu mai kama da juna, karami mara nauyi a saman.Launuka masu ɓarna, ma'auni, ragowar slag, ƙarfe na tarko, spatters da makamantansu dole ne a cire su, don kada a lalata layin da ke wucewa.Don tsaftace farfajiyar ana iya amfani da aikin goge-goge, niƙa, pickling ko fashewa (yashin silica wanda ba shi da ƙarfe ko filayen gilashi).Don gogewa kawai za a iya amfani da gogashin bakin karfe.Ana gudanar da zaɓen wurin da aka goge a baya ta hanyar tsomawa da feshi, duk da haka, galibi ana amfani da ƙwanƙolin manna ko mafita.Bayan an dasa shukar a hankali a wanke da ruwa dole ne a yi.