** 1. Cov hlau twg tsis tuaj yeem xeb? **
Txhua tus hlau tuaj yeem thev naus laus zis corrode raws txoj cai. Txawm li cas los xij, lub lus "stainless hlau" yog siv rau cov qib uas muaj kev tiv taus xeb vim lawv cov ntsiab lus chromium (ib txwm siab dua 10.5%). Qhov chromium cov ntawv ib lub passive, txheej oxide ntawm cov npoo uas tiv thaiv xeb ntawm kev tsim. Feem ntau thiab xeb {{4 {}}} Cov qhab nia resistant yog nyob rau hauv 300 series (zoo li 304 thiab 316). Tsis muaj tus hlau tshem tawm kom xeb, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig cov kab chlor lossis acids, tab sis stainless hlau tuaj heev nyob rau hauv ib txwm muaj.
** 2. Puas yog A2 lossis A4 stainless hlau muaj zog? **
Nyob rau hauv cov nqe lus ntawm kev siv zog (tensile zog, paib muaj zog, thiab hardness), A2 thiab A4 stainless zoo ib yam. Lawv yog ob feem ntawm Austenitic tsev neeg (300 series) thiab ua tiav lawv lub zog los ntawm kev ua haujlwm txias, tsis kho kom sov. Thawj qhov sib txawv tsis muaj zog tab sis corrosion tsis kam. A4 (316) muaj molybdenum, uas muab rau ntau tshaj qhov pitting thiab crevice corrosion, tshwj xeeb yog nyob hauv Chloride- Cov chaw nplua nuj ib puag ncig zoo li cov khoom lag luam marine lossis tshuaj lom neeg.
** 3. Dab tsi yog qhov sib txawv ntawm A2 thiab A3 steel? **
Qhov no yog ib qho kev sib piv tsawg dua. A2 feem ntau yog hais txog tus qauv Austenitic Steel Hlau (304). "A3" tsis yog qauv tsim qauv zoo li A2 lossis A4. Nws qee zaum siv los hais txog cov hlau steel 321, uas yog zoo heev li 304 (A2) tab sis nrog tus yuam sij ntawm titanium. Titanium ntxiv rau ruaj khov rau cov hlau tawm tsam "cov qauv ntawm cov hluav taws xob uas muaj peev xwm tshwm sim thaum muaj 800℃f / 427℃{{14} degree). Yog li, qhov sib txawv tseem ceeb yog A3 (321) yog qhov zoo dua rau qhov siab - kev siv ntsuas kub.
** 4. Dab tsi yog A36 hlau? **
A36 yog ib qho 4 carbon hlau **, tsis yog cov hlau stainless. Nws yog ib qho ntawm feem ntau thiab dav siv cov qauv hlau hauv ntiaj teb. Qhov "" sawv ntsug rau "ferrous" thiab "36" yog hais txog nws qhov tsawg kawg nkaus lub zog ntawm 36,000 psi (250 MPA). Nws muaj lub zog zoo, yog tsim muaj tseeb, thiab yog yooj yim welded, ua rau nws mus - Tsis zoo li cov hlau stainless, nws muaj heev corrosion tsis kam thiab yuav xeb sai sai yog tias tsis muaj kev tiv thaiv nrog cov xim pleev xim lossis lwm yam.
** 5. A2 hlau puas tau forged? **
Yog, A2 stainless hlau (304) tuaj yeem raug forged. Nws yog forged ntawm ib qho kub muaj kwv yees li ntawm 2100℃f {{4 4}}℃f (1150 degree- 1260 degree). Txawm li cas los xij, nws yog ib qho tseem ceeb kom nco ntsoov tias Forging yog cov txheej txheem ua haujlwm kub uas hloov cov qauv nplej ntawm cov hlau. Tom qab forging, ntu yuav tsum yauv mus rau txheej txheem kev kho cua sov hu li cas hu ua * Kev daws Annealing * ua raws li los ntawm kev quenching ceev. Qhov no yog qhov tseem ceeb kom yaj cov carbides ua phem uas precipitated thaum lub siab- qhov kev xav tau zoo corrosion desposion thiab ductility.
