Rob Koltz da Dave Meyer sun tattauna halaye na ferritic (magnetic) da austenitic (mara magnetic) halaye na welded bakin karfe.Getty Images
Tambaya: Ina walda tankin da aka yi da bakin karfe 316, wanda ba Magnetic ba.Na fara walda tankunan ruwa da waya ta ER316L kuma na gano cewa waldar tana yin maganadisu.Shin ina yin wani abu ba daidai ba?
A: Wataƙila ba ku da wani abin damuwa. Yana da al'ada ga welds da aka yi da ER316L don jawo hankalin maganadisu, kuma yana da yawa don birgima 316 zanen gado da zanen gado don kada jawo hankalin magnetism.
Iron alloys wanzu a da yawa daban-daban lokuta dangane da yanayin zafi da alloying matakin, wanda ke nufin cewa atoms a cikin karfe an shirya daban-daban.The biyu mafi na kowa lokaci ne austenite da ferrite.Austenite ba Magnetic yayin da ferrite ne Magnetic.
A cikin karfen carbon na yau da kullun, austenite wani lokaci ne wanda ke wanzuwa kawai a yanayin zafi mai yawa, kuma yayin da karfe ya yi sanyi, austenite yana canzawa zuwa ferrite.Saboda haka, a cikin dakin da zafin jiki, carbon karfe yana maganadisu.
Yawancin maki na bakin karfe, ciki har da 304 da 316, ana kiran su austenitic bakin karfe saboda babban lokacin su shine austenite a dakin zafin jiki.Waɗannan baƙin ƙarfe suna ƙarfafa zuwa ferrite kuma su canza zuwa austenite lokacin da aka sanyaya su.
A tsakiyar karni na 20, an gano cewa lokacin walda austenitic bakin karfe, kasancewar wasu ferrite a cikin weld karfe yana hana microcracking (fashewa) wanda zai iya faruwa a lokacin da filler karfe ne gaba daya austenitic.Don hana microcracking, mafi filler karafa for austenitic bakin karfe an tsara don ƙunshi 3% zuwa 20% Magnetic aunawa da ferrite. ƙananan welds na ƙarfe kuma na iya auna matakin jan hankali.
316 yana da wasu aikace-aikace inda rage girman kaddarorin maganadisu na weld yana da mahimmanci, amma wannan da wuya ake buƙata a cikin tankuna. Ina fata za ku iya ci gaba da siyarwa ba tare da wata damuwa ba.
WELDER, wanda a da yake Aiki na Welding A Yau, yana nuna ainihin mutanen da suke yin samfuran da muke amfani da su kuma suke aiki da su kowace rana.Wannan mujallar ta yi hidima ga al'ummar walda a Arewacin Amirka sama da shekaru 20.
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