1. Kev faib tawm yooj yim ntawm stainless hlau

Stainless hlau tuaj yeem muab faib ua peb pawg: 200 series, 300 series thiab 400 series. Ntawm lawv, 300 series yog feem ntau siv, thiab 200 series thiab 400 series yog hloov pauv rau 300 series rau qee yam. Hais lus nruj me ntsis, 400 series tsis yog hu ua stainless hlau. , hu ua stainless hlau, vim nws tsis muaj nickel, yog li nws tuaj yeem nyiam los ntawm cov hlau nplaum. 200 series thiab 300 series yog ua los ntawm npib tsib xee, yog li lawv tsis yog hlau nplaum thiab tsis tuaj yeem nqus los ntawm hlau.

304 yog qhov ntau tshaj plaws nyob rau hauv 300 series, yog li feem ntau tus nqi sib txawv ntawm tag nrho cov hlau stainless tuaj yeem txiav txim los ntawm tus nqi hloov ntawm 304. Lub 200 series muaj tsawg nickel, 400 series tsis muaj nickel, thiab 300 series muaj cov nickel feem ntau, yog li 300 series feem ntau cuam tshuam los ntawm tus nqi ntawm npib tsib xee.

300 series tuaj yeem muab faib ua 304, 304L, 316, 316L, 321, 309S, 310S, thiab lwm yam. Lub hauv paus rau qhov sib txawv yog tias cov ntsiab lus ntawm ntau yam hlau sib txawv, thiab cov yam ntxwv ntawm stainless hlau nrog cov ntsiab lus sib txawv yog kuj txawv. Qhov sib txawv ntawm 304 thiab 304L yog tias Cov pa roj carbon (C) cov ntsiab lus sib txawv, ib qho nrog L txhais tau tias cov ntsiab lus qis, kuj hu ua cov pa roj carbon tsawg, thiab qhov sib txawv ntawm 316 thiab 316L yog tib yam.

2. Kev faib tawm morphological ntawm stainless hlau

Stainless hlau yuav muab faib ua tsib pawg: coils, daim hlau, profiles, steel kav thiab qhov chaw, qhov tseem ceeb tshaj yog coils thiab daim hlau. Profiles yog cov ntaub ntawv ntawm ntau yam duab ua los ntawm daim hlau, nrog rau lub kaum sab xis steel, ca steel, I-beam, thiab channel steel. Cov yeeb nkab steel feem ntau yog hais txog seamless steel yeeb nkab, thiab qhov ntxeev ntawm seamless steel yeeb nkab yog welded yeeb nkab. Qhov txawv nyob rau hauv seb nws yog tsim nyob rau hauv ib lub sij hawm. Qhov feem ntau yog hais txog lub luj tshib thiab flanges thiab lwm yam me me.

Cov khoom siv coiled thiab cov phaj yog tib yam, tab sis lub Hoobkas daim ntawv sib txawv. Cov khoom siv coiled yog yob, thiab phaj yog ib daim ntawv. Yog tias lub Hoobkas yog lub phaj, nws tseem hu ua lub phaj qub. Nws feem ntau yog cov phaj tuab vim nws tuab heev. Yog tias nws yog thinner, nws tsis tuaj yeem dov. Feem ntau, nws tsis tuaj yeem dov yog tias nws ntau dua 16 hli.

Stainless hlau daim hlau muab faib ua kub dov thiab txias dov raws li cov txheej txheem dov ntawm cov dov zeb (rolling mill yog lub tshuab npe ntawm cov dov phaj). Kub dov feem ntau yog cim raws li NO.1 thiab txias dov yog cim raws li 2B los yog BA (BA zoo dua 2B nto, kom ci, ze rau daim iav, qhov zoo tshaj plaws yog daim iav nto, daim iav nto tsis nyob hauv Tshuag, thiab nws yuav tsum tau ua tiav), piv txwv li, 304 feem ntau yog lub rooj yuav khoom, uas txhais tau hais tias cov yob yuav tsum tau flattened rau hauv lub phaj los ntawm lub tshuab, lub tshuab no yog lub tshuab flattening.

3. Cov yam tseem ceeb ntawm stainless hlau thiab lawv cov yam ntxwv thiab kev siv

304: Raws li cov hlau siv dav, nws muaj kev tiv thaiv zoo corrosion, kub tsis kam, tsis tshua muaj zog thiab cov khoom siv kho tshuab, ua haujlwm kub zoo xws li stamping thiab dabtsi yog khoov, tsis muaj kev kho cua sov, tsis muaj hlau nplaum, thiab kev siv kub yog rho tawm 193 degrees. mus rau qhov zoo 800 degrees. Siv: tableware, chav ua noj, lub rhaub dej, boilers, pib qhov chaw, khoom siv kho mob, khoom noj khoom haus machinery, caw caw, siab hlab ntsha (tshuaj machinery, chemical khoom).

Raws li cov pa roj carbon tsawg 304 steel, 304L muaj qhov zoo sib xws corrosion tsis kam mus rau 304 nyob rau hauv ib txwm muaj, tab sis tom qab vuam thiab kev ntxhov siab nyem, nws muaj qhov zoo intergranular corrosion kuj thiab muaj peev xwm tuav tau zoo corrosion tsis muaj kev kho cua sov. Corrosion kuj, feem ntau siv ntawm 400 degrees, siv: petrochemical kev lag luam, cov ntaub ntawv hauv tsev.

321 ntxiv Ti lub caij rau 304 steel los tiv thaiv kev sib txhuam, tsim rau qhov zoo 430 txog 900 degrees, tsis yog hlau nplaum; siv: tsheb tso tsheb hlau luam, hloov hluav taws xob, lub thawv thiab lwm yam khoom uas tsis tau txais kev kho cua sov tom qab vuam, vim qhov sib ntxiv ntawm Ti ntsiab, nws tsis haum rau kev ua khoom noj khoom haus.

316 yog cov pa roj carbon tsawg, nrog MO ntxiv, yog li nws cov kev tiv thaiv corrosion, atmospheric corrosion kuj thiab kub kub lub zog yog tshwj xeeb zoo, nws yuav siv tau nyob rau hauv hnyav tej yam kev mob, nws yog haum rau siv hauv qab no 900 degrees, thiab nws tsis yog magnetic. Siv: cov khoom siv hauv cov dej hiav txwv, tshuaj, tshuaj zas, ntawv, acetic acid, chiv thiab lwm yam khoom siv ntau lawm, kev lag luam khoom noj khoom haus thiab cov chaw hauv cov chaw ntug dej hiav txwv, cov khoom siv tshwj xeeb rau kev tiv thaiv intergranular corrosion.

309S / 310S, ob hom khoom siv no, cov ntsiab lus ntawm nickel thiab chromium yog qhov siab, thiab cov ntsiab lus ntawm Si yog nce nyob rau tib lub sijhawm, kom nws muaj qhov kub thiab txias tsis kam thiab corrosion kuj. Ntawm lawv, 309S tuaj yeem tiv taus cua sov dua hauv qab 980 degrees, thiab 310S tuaj yeem siv rau ntawm qhov kub ntawm 1200 degrees. Kev siv tsis tu ncua Kub tuaj yeem yog 1150 degrees, tsis yog hlau nplaum. Siv: Haum rau cov khoom tseem ceeb xws li cov khoom siv hluav taws xob kub kub, cov khoom siv ziab khaub ncaws, cov khoom siv rauv, aviation, petrochemical, hluav taws xob, thiab lwm yam.

200 series zoo ib yam li 304 hais txog tus nqi qis thiab kev lag luam. Siv: Cov khoom siv ua zaub mov, khoom siv hauv chav ua noj, cov khoom siv ua zaub mov, cov lim dej, cov tso tsheb hlau luam, cov khoom siv ruaj khov, cov khoom siv ntxhua khaub ncaws ntxhua khaub ncaws, lub tshuab rhaub dej, cov rooj tog hlau steel, cov khoom siv kho kom zoo nkauj, kho kom zoo nkauj. Hais txog kev qaug zog tiv thaiv, 201 muaj zog dua, tab sis nws cov tawv tawv tsis zoo li 304, thiab 304 muaj kev qaug zog zoo dua.