Daga cikin nau'ikan bakin karfe daban-daban, ana amfani da maki 304, 304L, da 304H. Duk da yake suna iya kamanni, kowane aji yana da kaddarorinsa na musamman da aikace-aikace.
Daraja304 bakin karfeshi ne mafi yadu amfani da m na 300 jerin bakin karafa. Ya ƙunshi 18-20% chromium da 8-10.5% nickel, tare da ƙananan adadin carbon, manganese, da silicon. Wannan sa yana da kyakkyawan juriya na lalata da ingantaccen tsari. Ana amfani da shi sau da yawa a aikace-aikace kamar kayan dafa abinci, sarrafa abinci, da kayan ado na gine-gine.
304L bakin karfe bututushi ne wani low carbon karfe bututu bambancin sa 304, tare da iyakar carbon abun ciki na 0.03%. Wannan ƙananan abun ciki na carbon yana taimakawa rage hazo carbide yayin walda, yana mai da shi dacewa da aikace-aikacen walda. Ƙananan abun ciki na carbon kuma yana rage haɗarin haɓakawa, wanda shine samuwar chromium carbides a iyakokin hatsi, wanda zai iya haifar da lalata intergranular. Ana amfani da 304L sau da yawa a aikace-aikacen walda, da kuma wuraren da haɗarin lalata ke da damuwa, kamar sarrafa sinadarai da kayan aikin magunguna.
304H bakin karfeshine mafi girman sigar carbon na sa 304, tare da abun cikin carbon wanda ke jere daga 0.04-0.10%. Mafi girman abun ciki na carbon yana samar da mafi kyawun ƙarfin zafin jiki da juriya mai rarrafe. Wannan ya sa 304H ya dace da aikace-aikacen zafin jiki mai girma, kamar tasoshin matsa lamba, masu musayar zafi, da tukunyar jirgi na masana'antu. Koyaya, babban abun ciki na carbon shima yana sa 304H ya fi dacewa da hankali da lalata intergranular, musamman a aikace-aikacen walda.
A taƙaice, babban bambanci tsakanin waɗannan maki shine abun ciki na carbon da tasirin walda da aikace-aikacen zafin jiki mai girma. Mataki na 304 shine mafi yawan amfani da manufa gabaɗaya, yayin da 304L shine zaɓin da aka fi so don aikace-aikacen walda da mahalli inda lalata ke da damuwa. 304H yana da mafi girman abun ciki na carbon kuma ya dace da aikace-aikacen zafin jiki mai girma, amma yiwuwarsa ga haɓakawa da lalata intergranular yana buƙatar la'akari da hankali. Lokacin zabar tsakanin waɗannan maki, yana da mahimmanci a yi la'akari da takamaiman buƙatun aikace-aikacen, gami da yanayin aiki, zafin jiki, da buƙatun walda.
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Lokacin aikawa: Agusta-08-2024