Qhov txawv ntawm 904L Stainless hlau thiab 316L Stainless hlau yog dab tsi?

Dab tsi yog qhov txawv ntawm 904L stainless hlau thiab 316L stainless hlau?

Qhov txawv ntawm 904L stainless hlau thiab 316L stainless hlau:

1. Cov ntsiab lus tooj liab sib txawv: 904L stainless hlau muaj qee qhov tooj liab, tab sis 316L stainless hlau tsis muaj tooj liab.

2. Txawv corrosion kuj thiab hnav tsis kam: 904L stainless hlau muaj zog corrosion kuj thiab hnav tsis kam tshaj 316L stainless hlau.

3. Qhov hnyav sib txawv: 904L stainless hlau muaj ntau dua ntawm molybdenum, npib tsib xee, thiab tooj liab ntau dua li 316L stainless hlau, thiab qhov tshwj xeeb ntawm peb cov hlau no ntau dua li cov hlau. Yog li ntawd, hais txog qhov hnyav, 904L stainless hlau ntawm tib lub ntim yuav hnyav dua li 316L stainless hlau.

4. Lawv muaj kev siv sib txawv:

Kev siv 904l stainless hlau: dav siv hauv roj av thiab petrochemical khoom, xws li reactors hauv petrochemical khoom; sulfuric acid cia thiab cov khoom siv thauj mus los, xws li cov khoom siv hluav taws xob; fais fab nroj tsuag flue gas desulfurization khoom, cov khoom siv tseem ceeb yog: nqus ntauwd ntauwd lub cev, flue, qhov rooj vaj huam sib luag, qhov chaw sab hauv, lub tshuab nqus dej, thiab lwm yam.

Kev siv 316l stainless hlau: 316l stainless hlau yog siv rau hauv cov khoom siv kho dej hiav txwv, seawater heat exchangers, paper industry equipment, sulfuric acid thiab nitric acid, sulfuric acid, kev lag luam tshuaj thiab lwm yam khoom siv tshuaj, cov hlab ntsha siab, thiab khoom noj khoom haus.

Qhov ob feem ntau siv stainless hlau yog 304 thiab 316 (los yog 1.4308 thiab 1.4408 sib haum rau German / European qauv). Lub ntsiab sib txawv ntawm cov tshuaj muaj pes tsawg leeg ntawm 316 thiab 304 yog tias 316 muaj Mo, thiab nws feem ntau lees paub tias 316 muaj kev tiv thaiv corrosion zoo dua. , corrosion resistant ntau dua 304 nyob rau hauv qhov kub thiab txias ib puag ncig.

Yog li ntawd, nyob rau hauv qhov kub thiab txias ib puag ncig, engineers feem ntau xaiv cov khoom ua los ntawm 316 khoom. Tab sis raws li cov lus hais mus, tsis muaj qhov tseeb. Nyob rau hauv ib puag ncig sulfuric acid, txawm tias qhov kub siab npaum li cas, tsis txhob siv 316. Txwv tsis pub, nws yuav ua rau muaj teeb meem loj.

Tus neeg twg uas tau kawm mechanics tau kawm txog xov. Lawv tseem nco ntsoov tias txhawm rau tiv thaiv cov xov los ntawm kev ntes ntawm qhov kub siab, yuav tsum tau siv cov roj pleev xim tsaus nti: molybdenum disulfide (MoS2).

Ob lub ntsiab lus tuaj yeem kos los ntawm qhov no:

1: Mo yog ib yam khoom uas muaj peev xwm tiv taus qhov kub thiab txias (koj puas paub dab tsi crucible yog siv los yaj kub? Molybdenum crucible!).

2: Molybdenum tuaj yeem yooj yim hnov ​​​​mob nrog high-valent sulfide ions los ua sulfide. Yog li ntawd, tsis muaj stainless hlau yog super corrosion-resistant. Tom qab tag nrho, stainless hlau tsuas yog ib daim hlau nrog ntau impurities (tab sis cov impurities no muaj corrosion-resistant ntau dua hlau). Hlau tuaj yeem hnov ​​​​qab nrog lwm yam khoom.
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