** Taw qhia:
Stainless hlau yog ib qho alloy ntawm hlau, chromium, thiab lwm yam khoom uas muaj corrosion zoo heev thiab stain kuj. Nws yog dav siv nyob rau hauv ntau lub lag luam, nrog rau kev ua zaub mov, aerospace, thiab cov cuab yeej kho mob. Muaj peb yam tseem ceeb ntawm stainless hlau, txhua tus muaj nws tus kheej cov khoom thiab muaj pes tsawg leeg. Hauv tsab xov xwm no, peb yuav tham txog peb hom stainless hlau thiab lawv siv.
** Austenitic Stainless hlau:
Feem ntau hom stainless hlau yog austenitic stainless hlau, uas suav txog 70% ntawm tag nrho cov khoom. Hom stainless hlau no muaj lub ntsej muag-centered cubic crystal qauv, uas muab nws zoo heev ductility thiab toughness. Nws kuj tsis yog-sib nqus thiab muaj cua sov zoo.
Austenitic stainless hlau yog tsim los ntawm hlau, chromium, thiab npib tsib xee, nrog ntau cov pa roj carbon, manganese, thiab molybdenum. Qhov feem ntau siv qib ntawm austenitic stainless hlau yog qib 304, uas muaj 18% chromium thiab 8% npib tsib xee. Qib no yog paub txog nws zoo heev corrosion kuj, nrog rau nws muaj peev xwm tiv taus kub.
Lwm qib nrov ntawm austenitic stainless hlau yog qib 316. Cov qib no muaj 16-18% chromium, 10-14% nickel, thiab 2-3% molybdenum. Qib 316 feem ntau yog siv nyob rau hauv ib puag ncig uas yuav tsum tau tiv thaiv chloride corrosion, xws li hauv marine daim ntaub ntawv.
** Ferritic Stainless hlau:
Ferritic stainless hlau yog lwm hom kev siv stainless hlau, suav txog 20% ntawm tag nrho cov khoom. Hom stainless hlau no muaj lub cev-centered cubic crystal qauv thiab yog hlau nplaum. Nws muaj qhov zoo corrosion kuj, tab sis qis ductility thiab toughness dua austenitic stainless hlau.
Ferritic stainless hlau yog tsim los ntawm cov hlau thiab chromium, nrog ntau cov pa roj carbon, silicon, thiab qee zaum molybdenum. Qib feem ntau ntawm ferritic stainless hlau yog qib 430, uas muaj 16-18% chromium thiab tsawg dua 0.12% carbon. Cov qib no feem ntau yog siv rau hauv cov ntawv thov uas yuav tsum muaj kev sib xyaw ua ke zoo corrosion thiab formability, xws li hauv tsheb trim thiab cov tais diav hauv chav ua noj.
Lwm qib nrov ntawm ferritic stainless hlau yog qib 409, uas muaj 10.5-11.75% chromium thiab tsawg dua 0.5% npib tsib xee. Qib no feem ntau yog siv rau hauv cov ntawv thov uas yuav tsum tau tiv thaiv kom kub siab, xws li hauv cov tshuab tso pa.
** Martensitic Stainless hlau:
Martensitic stainless hlau yog qhov tsawg tshaj plaws siv hom stainless hlau, suav txog tsuas yog 10% ntawm tag nrho cov khoom. Hom stainless hlau no muaj lub cev-centered tetragonal siv lead ua qauv thiab yog hlau nplaum. Nws muaj zog thiab hardness, tab sis qis corrosion kuj tshaj austenitic thiab ferritic stainless hlau.
Martensitic stainless hlau yog tsim los ntawm hlau, chromium, thiab carbon, nrog rau ntau yam nickel, molybdenum, thiab lwm yam khoom. Qib feem ntau ntawm martensitic stainless hlau yog qib 410, uas muaj 11.5-13.5% chromium thiab tsawg dua 0.15% carbon. Qib no feem ntau yog siv rau hauv cov ntawv thov uas tsim nyog muaj zog thiab hardness, xws li hauv cutlery thiab cov cuab yeej phais.
Lwm qib nrov ntawm martensitic stainless hlau yog qib 420, uas muaj 12-14% chromium thiab tsawg dua 0.4% npib tsib xee. Qib no feem ntau siv rau hauv cov ntawv thov uas yuav tsum muaj kev hnav siab, xws li hauv cov twj tso kua mis thiab cov li qub.
** Lus xaus:
Hauv kev xaus, muaj peb yam tseem ceeb ntawm stainless hlau: austenitic, ferritic, thiab martensitic. Txhua hom muaj nws cov khoom, muaj pes tsawg leeg, thiab siv. Austenitic stainless hlau yog feem ntau siv hom, paub txog nws zoo heev corrosion kuj thiab kub tsis kam. Ferritic stainless hlau kuj tseem siv tau, paub txog nws qhov zoo corrosion kuj thiab formability. Martensitic stainless hlau yog hom siv tsawg tshaj plaws, paub txog nws lub zog siab thiab hardness. Nkag siab qhov sib txawv ntawm peb hom stainless hlau no yog qhov tseem ceeb thaum xaiv cov khoom siv rau koj daim ntawv thov.
