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ʻO kekahi mea e pili ana i ka papa meaʻai o ke kila kila

1. ʻO nā mea nui o ke kila kila
ʻO nā mea nui o ke kila kila he hao, chromium, nickel, a me kahi'āpana kalapona a me nā mea'ē aʻe

ʻO ka lua, ka hoʻokaʻawale ʻana o ke kila kila
E like me ka hoʻolālā hui waiwai

Austenitic kila kila
Ke kila kila ʻole Martensitic
He kila kuhiliʻole Ferritic
Austenitic-ferritic duplex kila kila
He kila kuhiliʻole ka paʻakikī o ka ua
ʻO ka mea maʻamau ʻo austenitic stainless steel, ʻo ka hoʻopuka ʻana o ke kila stainless austenitic e pili ana i ka 75% a i ka 80% o ka nui o ka hoʻopuka ʻana o ke kila kila.

ʻEkolu, austenitic stainless steel
ʻO ke kila kila austenitic mua loa i kapa ʻia ʻo 18-8 kila (ʻo ia hoʻi, kā mākou mea maʻamau 304 stainless steel, 18-8 ʻo ia hoʻi he 18% ka chromium, a ʻo ka nickel 8% ~ 10%), ʻo ia ka ʻO ke kila Representative maʻamau, ua hoʻomohala ʻia nā austenite ʻē aʻe ma ke kumu o 18-8.

ʻO nā mea maʻamau o ka austenitic stainless steel:

2XX moʻo (chromium-nickel-manganese austenitic stainless steel, ka mea maʻamau 201, 202)
3XX moʻo (chromium-nickel austenitic stainless steel, ka mea maʻamau 304, 316)
Ua hoʻokumu ʻia ka moʻo 2XX mai ke Kaua Honua ʻElua.Hoʻohana paʻa ʻia ka hoʻohana ʻana i ka nickel ma ke ʻano he mea hoʻolālā ma nā ʻāina like ʻole (he pipiʻi loa ka nickel).I mea e hoʻoponopono ai i ka pilikia o ka hemahema nui o ka lako nickel, ua hoʻomohala mua ʻo ʻAmelika i nā huahana 2XX series stainless steel me ka haʻahaʻa nickel content.Ma ke ʻano he pilikia a hoʻohui i ka moʻo 3XX, ua hoʻomohala ʻia ka moʻo 2XX ma ka hoʻohui ʻana i ka manganese a me (a) nitrogen i ke kila e pani ai i ka nickel metala makamae.ʻOi aku ka haʻahaʻa o ka moʻo 2XX ma mua o ka 3XX moʻo i ka corrosion resistance, akā ʻaʻole nā ​​​​mea ʻelua, no laila ʻo ka home He nui nā mea kūʻai hewa ʻole e hoʻohālike i ka 304 stainless steel me ka haʻahaʻa haʻahaʻa 201 kila, akā ʻoi aku ka nui o ka lawe ʻana i ka manganese i loko o ke kino o ke kanaka e hōʻeha i ka pōʻino. ka ʻōnaehana nerve, no laila ʻaʻole hiki ke hoʻohana ʻia ka moʻo 2XX no ka papa ʻaina.

ʻEhā, he aha ka ʻokoʻa ma waena o 304, SUS304, 06Cr19Ni10, S30408
ʻO kēia mau 18-8 austenitic stainless steels kapa ʻokoʻa i nā ʻāina like ʻole, 304 (American standard, ʻo ia ka inoa ʻAmelika), SUS304 (Japanese standard, ʻo ia hoʻi ka inoa Iapana), 06Cr19Ni10 (Chinese standard, ʻo ia ka inoa Kina) , S30408 ​​​​(S30408 ​​​​ʻo ia ka helu UNS o 06Cr19Ni10, a ʻo ʻAmelika Hui Pū ʻIa 304 pū kekahi helu UNS o S30400).E ʻokoʻa iki nā kūlana ʻāina like ʻole, akā i ka hopena, hiki ke manaʻo ʻia kēia mau mea like me ka mea like.

ʻElima, 304 kila kila a i ʻole 316 kila kila ʻoi aku ka maikaʻi
'Ōlelo maʻamau mākou ʻo 316 stainless steel pili i 316L, "L" ka pōkole o "LOW" ma ka ʻōlelo Pelekania, ʻo ia hoʻi ka "carbon haʻahaʻa".Hoʻohālikelike ʻia me 304, 316 stainless steel ua hoʻonui i ka ʻike o ka nickel, hoʻemi i ka ʻike o ke kalapona, a me ka molybdenum hou (ʻaʻohe molybdenum i 304).ʻO ka hoʻohui ʻana o ka nickel a me ka molybdenum e hoʻonui nui i kona kūpaʻa corrosion a me ke kūpaʻa wela kiʻekiʻe.ʻOiaʻiʻo, ke kumukūʻai Also kiʻekiʻe.Hoʻohana nui ʻia ʻo 316 i loko o ka moana, ka distillation wela kiʻekiʻe, nā mea lapaʻau kūikawā a me nā mea hana ʻē aʻe e pono ai ke kūpaʻa corrosion a me ke kūpaʻa wela kiʻekiʻe, no laila ua lawa ʻo 304 no ka hoʻopili meaʻai maʻamau.

ʻEono, he aha ka meaʻai mea kila kuhiliʻole
ʻO ke kila kuhili ʻai meaʻai e pili ana i ke kila kila e kū ana i ka maʻamau maʻamau ʻāina GB4806.9-2016 "National Food Safety Standard and Metal Materials and Products for Food Contact".

Hiki ke ʻike ʻia ma luna nei he ʻelua mau koi koʻikoʻi o ka ʻāina no ka meaʻai-grade stainless steel: ʻo ka mea pono e hoʻokō nā mea maka i nā koi, a ʻo ka mea ʻē aʻe ʻo ka ua o nā metala kaumaha i loko o kēia mau mea maka e hoʻokō i ka meaʻai. nā kūlana.

He nui nā hoaaloha e nīnau inā ʻo 304 stainless steel ka meaʻai meaʻai stainless steel?
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ʻO ka pane: ʻo 304 ke kila kuhili ʻole "ʻaʻole i like me" kila kila kila.ʻO 304 kahi kūlana ʻAmelika.ʻO ka mea maʻamau, ʻaʻole hiki i ka maʻamau Kina ke hoʻohana i ka huaʻōlelo "304" ma ke ʻano he maʻamau ʻAmelika, akā ma ka ʻōlelo maʻamau, "i mālama pono ʻia ʻo 304 stainless steel" ʻo ia ka meaʻai Grade stainless steel, maʻamau 304 stainless steel ʻaʻole meaʻai stainless steel, 304 ʻO ke kila kuhili ka nui o ka hoʻohana ʻana i ka ʻoihana, a ʻo ka hapa nui o lākou ʻaʻole ia he meaʻai.


Ka manawa hoʻouna: ʻAukake-24-2021

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