304 uye 316 Simbi isina ngura

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Ko macode eStainless simbi 304 uye 316 kureva?

Mhando huru dzesimbi isina tsvina ndeye: austenitic simbi isina tsvina, ferritic simbi isina tsvina, duplex simbi isina tsvina (duplex kazhinji inoreva: austenite-ferrite zvikamu zviviri), martensitic uye kunaya kwemvura kuomesa simbi isina tsvina. Pakati pavo, austenitic Stainless simbi ndiyo inonyanya kushandiswa, kuverenga kupfuura 2/3 yehuwandu hwese hwesimbi isina tsvina inogadzirwa munyika. Izvi zvinodaro nekuti zvichienzaniswa nemamwe marudzi esimbi isina tsvina, ine maitiro ekudzivirira ngura, zvakanaka ductility, yakakwirira uye yakaderera tembiricha kuramba uye zvakanaka weldability, uye kazhinji isiri-magnetic.

Mhando dzakasiyana dzesimbi isina tsvina

Saka chii chinoita macode kune akajairika 304 uye 316 simbi dzisina tsvina zvinoreva?

Ndisati ndanzwisisa zvazvinoreva, zvakakosha kuti unzwisise kwaakabva. Saizvozvo, iri zita rine manhamba matatu rakabva kuAmerican Iron and Steel Institute (AISI), iyo yakaburitsa nhamba idzi mu "Steel Products Handbook" mukati 1974. Nhamba yezvinhu inogona kushandiswa kunzwisisa rudzi rwezvinhu zvakasiyana-siyana zvesimbi, uye inopawo ruzivo rwakakosha pamusoro pemakemikari avo, zvinhu zvemuviri uye chiyero chekushandisa. Pashure, masisitimu ekuverenga manhamba aya aishandiswa zvakanyanya muUnited States, kwavakabva, uye zvakazivikanwa nevakawanda simbi isina tsvina inotsanangura seta nevashandisi. Zvadaro zvakashandiswa zvakanyanya kune dzimwe nyika. Semuyenzaniso, simbi isina tsvina muJapan inoshandisawo zita reAISI, asi nemavara SUS (simbi inoshandiswa isina tsvina) pamberi, akadai SUS 304.

Gare gare, kuunzwa kwe "Uniform Numbering System" yakabatanidzwa pamwe chete neASTM (American Society for Testing and Materials) uye SAE (American Society of Automotive Engineers) yakaita iyo AISI giredhi kupatsanurwa zvakanyanya, asi manhamba akashandisa vara rekutanga S + chiziviso chine manhamba mashanu, senge UNS S30400 ye 304, UNS S30403 ye304L.

Europe ine imwe system, zvichitevera chiyero cheEN chakagadzirwa neEuropean Committee for Standardization (CEN), senge EN 1.4301 nokuti 304 simbi isina ngura. Pakupedzisira, chiyero cheISO chakafunga kusiyana kwemapoka makuru maviri muEurope neUnited States, uye akabatanidza maviri. Semuyenzaniso, nhamba yezvinhu zve 304 simbi isina tsvina ndiyo: 4301-304-00-I, ine nhamba yekuEurope kumberi uye nhamba yekuAmerica iri pakati.

Kemikari Kuumbwa Kuenzanisa Pakati 304 uye 316 Simbi isina ngura

Misiyano Yakakosha

1. Molybdenum Content: 316 rine 2.0-3.0% molybdenum, iyo inovandudza zvakanyanya kuramba kwegomba uye crevice corrosion, kunyanya munzvimbo dzine chloride-rich.
2. Nickel Content: 316 simbi isina ngura ine nickel yepamusoro, kuwedzera kupikisa kwayo kune acids, mabhesi, uye ngura.
3. Chromium Content: 304 ine chromium yakati wandei, asi mupiro wayo wese mukuramba kuora hauna kukosha kana uchienzaniswa ne molybdenum uye nickel in 316.

Applications

• 304: Inowanzo kushandiswa kwezuva nezuva kitchenware, midziyo, uye zvinhu zvekushongedza zvekushongedza.
• 316: Yakanakira nharaunda inoda yakakwira corrosion resistance, sezvikumbiro zvemugungwa, makemikari ekugadzira michina, uye zviridzwa zvokurapa.

304 uye 316 Simbi isina ngura

Ngatidzokerei kune zvinoreva kodhi. Nhamba dzinotanga na "2" uye "3" dzinowanzomiririra austenitic stainless steel, nepo martensitic uye ferritic simbi isina tsvina inowanzotanga nayo 4. Naizvozvo, patinoona "3" pakutanga kwe 304 uye 316, tinoziva kuti ose ari austenitic simbi isina tsvina. Zvisinei, nhamba mbiri mushure me”3” hadzina zvadzinoreva, ingori nhamba dzemasiriri dzezvinhu zvakasiyana. Ndosaka tanga tichitaura “nhamba” pachinzvimbo chekuti “magiredhi” muchikamu chapfuura. Kana iwe uchida kunzwisisa iyo chaiyo yemakemikari kuumbwa, unofanira kutarisa giredhi. Semuyenzaniso, giredhi rinoenderana re 304 simbi isina tsvina mune ISO chiyero ndeye X5CrNi18-10. MuChina, maererano nemwero wenyika (GB/T 20878), giredhi re 304 simbi isina tsvina ndeye 06Cr19Ni10.