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Wani abu game da matakin abinci na bakin karfe

1. Babban abubuwan da ke cikin bakin karfe
Babban abubuwan da ke cikin bakin karfe sune baƙin ƙarfe, chromium, nickel, da ƙaramin adadin carbon da sauran abubuwa

Na biyu, rarrabuwa na bakin karfe
Dangane da tsarin tsarin kayan abu

Austenitic bakin karfe
Martensitic bakin karfe
Ferritic bakin karfe
Austenitic-ferritic duplex bakin karfe
Hazo hardening bakin karfe
Mafi na kowa shi ne austenitic bakin karfe, fitarwa na austenitic bakin karfe lissafin kusan 75% zuwa 80% na jimlar fitar da bakin karfe.

Uku, bakin karfe austenitic
A classic farko-ƙarni austenitic bakin karfe ana kiransa 18-8 karfe (wato, mu gama 304 bakin karfe, 18-8 yana nufin cewa chromium abun ciki ne game da 18%, da kuma nickel 8% ~ 10%), wanda shi ne mafi yawan wakilcin ƙarfe na yau da kullun, sauran austenites duk an haɓaka su akan 18-8.

Abubuwan gama gari na bakin karfe austenitic sune:

2XX (chromium-nickel-manganese austenitic bakin karfe, mafi yawan 201, 202)
3XX (chromium-nickel austenitic bakin karfe, mafi yawan 304, 316)
Jerin 2XX ya samo asali ne daga yakin duniya na biyu.Yin amfani da nickel a matsayin kayan mahimmanci ana sarrafa shi sosai a cikin ƙasashe daban-daban (nickel yana da tsada sosai).Domin warware matsalar ƙarancin ƙarancin nickel, Amurka ta fara haɓaka samfuran bakin karfe na 2XX tare da ƙarancin abun ciki na nickel.A matsayin gaggawa da ƙari ga jerin 3XX, an ƙaddamar da jerin 2XX ta hanyar ƙara manganese da (ko) nitrogen zuwa karfe don maye gurbin nickel mai daraja.Jerin 2XX yana da ƙasa da jerin 3XX a cikin juriya na lalata, amma duka biyun ba su da Magnetic, don haka cikin gida Yawancin 'yan kasuwa marasa gaskiya suna yin kamar 304 bakin karfe tare da ƙarancin 201 bakin karfe, amma yawan cin manganese a cikin jikin mutum zai haifar da lalacewa. tsarin jin tsoro, don haka ba za a iya amfani da jerin 2XX don kayan tebur ba.

Na hudu, menene bambanci tsakanin 304, SUS304, 06Cr19Ni10, S30408
Wadannan 18-8 austenitic bakin karfe ana kiran su daban-daban a kasashe daban-daban, 304 (Amurka misali, wanda shine sunan Amurka), SUS304 (Japan misali, wanda shi ne sunan Jafananci), 06Cr19Ni10 (Sin misali, wanda shine sunan Sinanci). , S30408 ​​​​(S30408 ​​shine lambar UNS na 06Cr19Ni10, kuma Amurka 304 kuma tana da lambar UNS daidai da lambar S30400).Matsayin ƙasa daban-daban za su ɗan bambanta, amma a ƙarshe, ana iya ɗaukar waɗannan gabaɗaya azaman abu ɗaya.

Biyar, 304 bakin karfe ko 316 bakin karfe wanda ya fi kyau
Mu yawanci muna cewa 316 bakin karfe yana nufin 316L, "L" shine taƙaitaccen "LOW" a Turanci, wanda ke nufin "ƙananan carbon".Idan aka kwatanta da 304, 316 bakin karfe ya karu da abun ciki na nickel, rage abun ciki na carbon, da sabon kara molybdenum (babu molybdenum a 304).Bugu da ƙari na nickel da molybdenum suna haɓaka juriya na lalata da kuma yawan zafin jiki.Tabbas, farashin Hakanan ya fi girma.316 ana amfani dashi galibi a cikin ruwa, distillation mai zafi, kayan aikin likita na musamman da sauran kayan aikin da ke buƙatar juriya na lalata da juriya mai zafin jiki, don haka 304 ya isa ga hulɗar abinci na yau da kullun.

Shida, mene ne bakin karfen abinci
Bakin karfe mai darajan abinci yana nufin bakin karfe wanda ya dace da ma'aunin dole na kasa GB4806.9-2016 "Ma'aunin Tsaron Abinci na Kasa da Kayan Karfe da Samfura don Tuntun Abinci".

Za a iya gani daga abubuwan da suka gabata cewa kasar tana da manyan bukatu guda biyu na bakin karfe mai ingancin abinci: daya shi ne cewa albarkatun kasa dole ne su cika ka'idojin da ake bukata, daya kuma shi ne cewa hazo mai nauyi a cikin wadannan albarkatun kasa dole ne ya dace da ingancin abinci. ma'auni.

Abokai da yawa za su tambaya idan bakin karfe 304 shine bakin karfe?
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Amsar ita ce: bakin karfe 304 “ba ya kai” bakin karfen abinci.304 misali ne na Amurka.A dabi'a, ba shi yiwuwa ga ma'aunin kasar Sin ya yi amfani da kalmar "304" a matsayin misali na Amurka, amma gabaɗaya magana, "musamman bi da bakin karfe 304" shine abinci Grade bakin karfe, talakawa 304 bakin karfe ba abinci ba bakin karfe, 304 bakin karfe yana da fa'idar amfani da masana'antu iri-iri, kuma yawancinsu ba su da darajar abinci.


Lokacin aikawa: Agusta-24-2021

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