### 1. Dab tsi yog qhov sib txawv ntawm 304 thiab 202 steel?
Lub ntsiab sib txawv lus dag nyob rau hauv lawv muaj pes tsawg leeg thiab ua rau corrosion tsis kam. ** 304 Stainless hlau ** yog ib feem ntawm 300 koob thiab siv npib tsib xee thiab chromium raws li nws cov ntsiab lus tseem ceeb. Qhov no muab nws zoo heev corrosion tsis kam. ** 202 stainless hlau ** yog ib feem ntawm 200 series, uas muaj qhov tseem ceeb ntawm cov npib kim tsib yog hloov nrog manganese thiab nitrogen. Qhov no ua rau 202 tsawg dua kim tab sis kuj tsis tshua tiv taus corrosion, tshwj xeeb yog feem ntau}}} zoo dua 202.
### 2. Puas yog 304 muaj zog tshaj 316?
Tsis tau, 304 tsis muaj zog tshaj 316 nyob rau hauv cov nqe lus ntawm tensile lossis lees lub zog. Lawv cov khoom siv txhua yam yog qhov zoo heev. Tus yuam sij sib txawv yog nyob rau hauv lawv corrosion tsis kam. ** 316 Stainless hlau ** muaj molybdenum, ib qho khoom uas 304 tsis muaj. Qhov no Molybdenum ognatically nce 316 tus tiv thaiv mus rau chlorides thiab acids, ua rau nws lub ntsej muag "stainless zoo li cov ntug dej hiav txwv lossis kev ua yeeb yam. Yog li, thaum tsis "muaj zog" nyob rau hauv lub tshuab ua haujlwm zoo siab, 316 yog qhov loj dua nyob rau hauv nws lub peev xwm los tiv taus corrosion thiab pitting.
### 3. Cov hlau twg zoo tshaj, 302 lossis 304?
Rau feem ntau ntawm cov ntawv thov, ** 304 yog suav tias yog zoo dua thiab yog cov qhab nia siv ntau dua **. Qhov ob qib kawm tau zoo heev, tab sis 304 muaj ib qho kev sib txawv me ntsis rau "kev kub siab dua li 302. Qhov me me no ua rau muaj 302 (carbide nag lossis daus) Yog li ntawd, 304 yog qhov xav tau rau txhua daim ntawv thov uas yuav tsum tau vuam {{}} yog muaj zog me ntsis rau cov qauv tsim tshiab hauv kev pom zoo ntawm qhov ntau weldable 304.
### 4. Kuv yuav paub tau li cas yog tias kuv SS yog 304 lossis 316?
Nws yog qhov nyuaj heev los qhia lawv sib nrug los ntawm kev pom lossis kov raws li lawv saib zoo ib yam. Cov hau kev tshaj plaws txhim khu kev qha yuav tsum tau kuaj:
* ** Kev ntsuas tshuaj (feem ntau yog): ** Siv A ** Molybdenum (MO) Test Cov Khoom Siv **. Ib qho kev sim ntawm kev sim tshuaj yog siv rau saum npoo. Yog tias cov steel muaj molybdenum (taw qhia 316), qhov poob yuav tig xim tshwj xeeb (feem ntau xim av lossis kub). Yog tias nws muaj tsis muaj Molybdenum (taw qhia 304), nws yuav qhia cov tshuaj sib txawv (feem ntau liab lossis tsis muaj xim hloov).
* ** Kev sim cais tawm (rau cov neeg ua haujlwm uas tau ntsib dua): ** Thaum grinded, thiab tsawg dua "tawg" dua li cov txim taws "dua li cov kev paub tseem ceeb.
* ** XRF Analyzer (Cov cuab yeej ua haujlwm): ** Qhov no yog ib qho khoom siv kim heev uas tuaj yeem txheeb xyuas qhov sib xyaw ua ke hauv vib nas this. Nws yog siv los ntawm cov neeg muag khoom hlau thiab tswj cov kws tshaj lij.
### 5. Plaub yam ntawm stainless hlau yog dab tsi?
Plaub hom thawj hom stainless hlau yog catineorized los ntawm lawv crystalline micstalline Micructure:
1. ** Austenitic (piv txwv li, 200 thiab 300 series zoo li 304, 316): ** Nov yog hom feem ntau. Nws tsis yog -} sib nqus, muaj kev sib nqus, thiab muab cov tshuaj tiv thaiv corrosion zoo thiab muaj peev xwm. Nws yog qhov nyuaj los ntawm kev ua haujlwm txias, tsis yog los ntawm kev kho cua sov.
2. ** Ferritic (piv txwv li, 430, 409): ** Cov no yog cov sib nqus cov hlau ua hauj (txawm tias tsawg dua li kev ntxhov siab. Lawv muaj cov ntsiab lus tsib xee tsawg dua, ua rau lawv muaj kev lag luam ntau dua. Lawv tsis tuaj yeem ua kom tiav los ntawm kev kho cua sov.
3. "Martensitic (piv txwv li, 410, 420): ** Cov no yog cov sib nqus thiab tuaj yeem sib nqus thiab tuaj yeem ua rau cov hlau ua cua sov (zoo li cov pa roj carbon), ua rau lawv muaj zog carbon), ua rau lawv muaj zog carbon), ua rau lawv muaj zog carbon), ua rau lawv muaj zog carbon), ua rau lawv nyuaj thiab muaj zog. Txawm li cas los xij, qhov no los ntawm tus nqi ntawm qis tawv thiab ntau qis dua corrosion tsis kam piv rau cov qib meterenic. Feem ntau siv rau cutlery, tuaj, thiab tej yam tshuab tshuab.
4. Ob qho tib si Duplex (piv txwv li, 2205): ** Qhov no yog cov qauv sib xyaw ua ke uas yog ib qho kev sib xyaw ntawm cov nplej ntawm Austenitic thiab Ferritic nplej. Nws muaj lub zog siab heev (txog ob npaug rau ntawm cov qib Austenitic qib) thiab ua tau zoo heev rau kev ntxhov siab corrosion tawg. Nws yog feem ntau siv hauv kev xav tau ntawm ntug pegshore, tshuaj lom neeg, thiab roj thiab roj app.
