Taw qhia
Stainless hlau phaj yog dav siv hauv kev lag luam khoom noj khoom haus, khoom siv kho mob tsim khoom, thiab kev tsim kho. Stainless hlau paub txog nws cov kav ntev thiab tsis kam tiv thaiv corrosion, ua rau nws xaiv cov khoom siv nrov rau daim hlau. Txawm li cas los xij, nrog ntau ntau hom stainless hlau muaj, nws tuaj yeem nyuaj los txiav txim siab qhov twg yog qhov zoo tshaj plaws rau koj cov kev xav tau tshwj xeeb. Hauv tsab xov xwm no, peb yuav tham txog ntau hom stainless hlau thiab lawv cov khoom, los pab koj txiav txim siab paub.
Stainless hlau yog dab tsi?
Stainless hlau yog ib hom hlau uas muaj tsawg kawg yog 10.5% chromium, uas muab nws cov khoom tiv thaiv corrosion. Chromium reacts nrog oxygen los tsim ib txheej nyias ntawm chromium oxide nyob rau saum npoo ntawm cov hlau, uas tiv thaiv nws los ntawm xeb thiab corrosion. Lwm cov ntsiab lus xws li npib tsib xee, molybdenum, thiab titanium kuj tuaj yeem ntxiv los txhim kho nws cov khoom, xws li lub zog, ductility, thiab weldability.
Muaj ob lub ntsiab ntawm stainless hlau: austenitic thiab ferritic. Austenitic stainless hlau yog hom siv ntau tshaj plaws thiab muaj kev ruaj khov thiab tiv taus corrosion. Ferritic stainless hlau tsis tshua muaj ductile thiab muaj zog corrosion kuj, tab sis feem ntau yog siv nyob rau hauv automotive daim ntaub ntawv vim nws kub kub kuj.
Hom stainless hlau rau daim hlau
Muaj ntau ntau qib sib txawv ntawm stainless hlau, txhua tus muaj nws tus kheej cov khoom tshwj xeeb. Cov qib uas zoo tshaj plaws rau daim hlau yuav nyob ntawm ntau yam, nrog rau nws qhov chaw siv, xav tau lub zog, thiab corrosion kuj.
1. 304 stainless hlau
Qib 304 yog feem ntau siv stainless hlau rau daim hlau thiab feem ntau hu ua "18/8" stainless hlau. Qhov no yog vim nws muaj 18% chromium thiab 8% npib tsib xee. Nws yog heev resistant rau corrosion thiab feem ntau siv nyob rau hauv cov khoom noj khoom haus kev lag luam, raws li zoo raws li nyob rau hauv daim ntawv thov uas siab zog thiab corrosion kuj yuav tsum tau. Nws kuj yog tus nqi qis thiab yooj yim rau kev tsim.
2. 316 stainless hlau
Qib 316 muaj 16-18% chromium, 10-14% nickel, thiab 2-3% molybdenum. Nws tiv taus corrosion ntau dua li 304 stainless hlau thiab feem ntau siv rau hauv kev siv dej hiav txwv thiab hauv kev kho mob kev lag luam. Nws kuj muaj lub zog siab dua thiab ua haujlwm kub zoo dua li 304 stainless hlau.
3. 430 stainless hlau
Qib 430 yog ferritic stainless hlau uas muaj 17% chromium. Nws tsis tshua muaj corrosion-resistant dua li austenitic stainless hlau thiab feem ntau yog siv rau hauv kev siv tsheb vim nws cov cua kub tsis kam.
4. 410 stainless hlau
Qib 410 yog martensitic stainless hlau uas muaj 11.
Yam yuav tsum tau xav txog thaum xaiv stainless hlau rau daim hlau
Thaum xaiv cov qib stainless hlau rau daim hlau, muaj ntau yam los xav txog, suav nrog:
1. Kev tiv thaiv corrosion: qib ntawm corrosion kuj yuav tsum tau nyob ntawm qhov chaw siv. Yog hais tias cov phaj yuav raug rau cov tshuaj hnyav los yog cua ntsev, qib siab dua ntawm cov hlau tsis muaj steel nrog ntau dua corrosion kuj yuav tsim nyog.
2. Lub zog: Lub zog ntawm cov phaj xav tau yuav nyob ntawm daim ntawv thov. Yog tias daim hlau yuav siv rau hauv daim ntawv thov hnyav, qib siab dua ntawm stainless hlau nrog lub zog ntau dua yuav tsim nyog.
3. Formability: Lub peev xwm los tsim cov hlau tsis huv rau hauv daim hlau ntawm cov duab sib txawv thiab qhov ntau thiab tsawg yog qhov tseem ceeb rau ntau daim ntawv thov. Qee qib ntawm stainless hlau yog yooj yim rau kev tsim dua lwm tus.
4. Weldability: Yog tias daim hlau yuav tsum tau welded ua ke, qib ntawm stainless hlau xaiv yuav tsum weldable.
Xaus
Hauv kev xaus, muaj ntau ntau qib sib txawv ntawm stainless hlau xaiv los ntawm thaum xaiv daim hlau. Cov qib zoo tshaj plaws ntawm stainless hlau yuav nyob ntawm seb yam xws li corrosion kuj, lub zog, formability, thiab weldability. 304 stainless hlau yog qib feem ntau siv rau daim hlau vim nws cov qib siab corrosion kuj thiab yooj yim ntawm kev siv, tab sis lwm qib xws li 316, 430, thiab 410 tej zaum yuav haum rau tej yam kev siv. Nws yog ib qho tseem ceeb kom ua tib zoo xav txog cov khoom ntawm txhua qib ntawm stainless hlau ua ntej txiav txim siab.
