201 thiab 304 stainless hlau phaj yog ob qib siv ntau tshaj plaws hauv austenitic stainless hlau. Lawv qhov sib txawv tseem ceeb yog nyob rau hauv cov tshuaj lom neeg sib xyaw (cov ntsiab lus ntawm nickel thiab chromium), uas ua rau muaj kev hloov pauv sib txawv hauv kev tiv thaiv corrosion, cov khoom siv kho tshuab, tus nqi, thiab cov xwm txheej siv. Hauv qab no yog kev sib piv ntxaws ntxaws:
1. Qhov Sib Txawv Tseem Ceeb: Cov Tshuaj Lom Zem
Nickel (Ni) thiab chromium (Cr) yog cov ntsiab lus tseem ceeb rau kev tiv thaiv xeb ntawm cov hlau tsis xeb. Qhov sib txawv ntawm lawv cov ntsiab lus yog qhov sib txawv tseem ceeb ntawm ob qib:
| Qib | Cov ntsiab lus ntawm Chromium (Cr) | Cov ntsiab lus ntawm Nickel (Ni) | Cov ntsiab lus ntawm Manganese (Mn) | Cov ntsiab lus ntawm cov pa roj carbon (C) | Kev Hloov Chaw |
|---|---|---|---|---|---|
| 201 Cov Hlau Stainless | 16%–18% | 3.5%–5.5% | 5.5%–7.5% | ≤0.15% | Siv cov manganese siab los hloov ib feem ntawm nickel rau kev txo nqi |
| 304 Cov Hlau Stainless | 18%–20% | 8%–10.5% | ≤2% | ≤0.08% | Cov ntsiab lus nickel thiab chromium siab, tsis muaj manganese hloov |
2. Qhov Txawv ntawm Kev Ua Tau Zoo
(1) Kev Tiv Thaiv Kev Xeb
- 201 Cov Hlau Tsis Xeb: Tsis zoo tiv taus xeb. Nws tsuas yog tuaj yeem tiv taus qhov chaw qhuav hauv tsev lossis cov huab cua me ntsis noo. Nws yooj yim xeb hauv ntug dej hiav txwv, kua qaub-alkali, lossis cov pa dej ntsev ntau, tshwj xeeb tshaj yog ntawm cov pob qij txha vuam.
- 304 Stainless Steel: Tiv taus xeb zoo heev. Nws tuaj yeem tiv taus cov av noo, cov kua qaub thiab alkali tsis muaj zog, thiab kev raug nag sab nraum zoov. Nws yog qhov kev xaiv tseem ceeb rau cov khoom noj thiab cov khoom siv hauv tsev, ua tau raws li qhov yuav tsum tau ua txhua hnub.
(2) Cov Khoom Siv Kho Tshuab
- 201 Stainless Steel: Muaj zog dua thiab muaj zog dua me ntsis, tab sis qis dua 304 hauv kev yooj ywm thiab kev tawv. Nws feem ntau tawg thaum lub sijhawm ua thiab muaj kev ua haujlwm tsis zoo.
- 304 Cov Hlau Tsis Xeb: Zoo ductility thiab toughness, yooj yim rau khoov, stamping, thiab weld. Nws tsis yooj yim deformation lossis tawg tom qab ua tiav, ua rau nws haum rau cov xwm txheej tsim khoom nyuaj.
(3) Kev Tiv Thaiv Kub Siab
- 201 Stainless Steel: Qhov kub siab tshaj plaws yog nyob ib puag ncig 300 ℃; nws yooj yim rau oxidation thiab deformation dhau qhov kub no.
- 304 Stainless Hlau: Qhov kub siab tshaj plaws yog nyob ib puag ncig 800 ℃, siv tau rau qhov chaw nruab nrab thiab kub siab xws li qhov cub thiab lub tshuab cua sov dej sab hauv.
(4) Tus nqi
- 201 Stainless Steel: Vim nws cov nickel tsawg, nws pheej yig dua 30% -50% dua li 304, ua rau nws yog qib stainless hlau pheej yig.
- 304 Stainless Steel: Tus nqi siab dua, ua haujlwm ua cov khoom siv txheem rau kev siv pej xeem thiab zaub mov.
3. Kev Sib Piv Txog Qhov Xwm Txheej ntawm Daim Ntawv Thov
| 201 Cov Ntawv Thov Phaj Hlau Stainless | 304 Cov Hlau Stainless Phaj Daim Ntawv Thov |
|---|---|
| Cov khoom dai kom zoo nkauj sab hauv tsev (ntoo qhov rooj, txee, cov ntawv tshaj tawm) | Cov khoom siv hauv chav ua noj (lub dab dej, cov khoom siv hauv chav ua noj, cov txee tua kab mob) |
| Cov khoom siv tsis muaj zog, cov ntaiv tiv thaiv, cov ntaub thaiv kev tub sab | Cov khoom siv ua zaub mov, cov khoom siv kho mob, cov kav dej haus |
| Cov laj kab sab nraum zoov uas tsis tas yuav tsum muaj ntau (cov chaw uas tsis yog ntug dej hiav txwv/chaw uas muaj xeb ntau) | Cov phab ntsa sab nraum zoov, cov ntaiv sam thiaj, cov tshuab cua sov dej sab hauv |
| Cov txee cia khoom ib ntus, cov laub tes | Cov thawv tshuaj lom neeg, cov khoom siv huv, cov fwj nqus tsev |
4. Cov Lus Qhia Txog Kev Txheeb Xyuas Sai
- Kev Nqus Tau Hlau nplaum: 201 muaj cov manganese ntau, ua rau muaj hlau nplaum muaj zog dua li 304, yog li nws txuas nrog hlau nplaum tau zoo dua. 304 yuav luag tsis muaj hlau nplaum lossis hlau nplaum tsis muaj zog.
- Kev Tshuaj Xyuas Pom: 201 muaj qhov ci ntsa iab ntawm qhov chaw thiab yooj yim rau xeb, thaum 304 muaj qhov chaw ci dua thiab huv dua uas tsis yooj yim xeb tom qab siv ntev.
- Kev Ntsuas Tshuaj Reagent: Siv cov kua kuaj xyuas cov hlau tsis xeb. Thaum poob rau ntawm lub phaj, 201 yuav tig liab sai sai, thaum 304 tsis qhia tias muaj kev hloov xim pom tseeb (qhov tseeb siab, tsim nyog rau kev sim hauv tsev).
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-18-2025