** Dab tsi yog qhov tsis zoo ntawm 4140 hlau? **
4140 Hlau muaj ntau qhov tsis zoo. Nws thawj qhov tsis muaj zog yog nws qhov tsis zoo rau corrosion; Nws yuav xeb tau yooj yim thaum nthuav tawm cov dej noo thiab huab cua tshwj tsis muaj kev tiv thaiv. Nws tseem tuaj yeem nyuaj rau tshuab nyob rau hauv nws annealed lub xeev vim nws cov cua sov, thiab nws yuav tsum tau ua ntej kev kho mob thaum ua kom tiv thaiv kev tawg thiab rov qab ua haujlwm. Tsis tas li ntawd, thaum nws muaj zog heev, lub zog loj no tuaj yeem ua rau nws nyuaj rau tsim lossis khoov tsis muaj ua ntej thov kom kub.
** Dab tsi yog qhov xeb ntau tshaj plaws? **
Qhov feem ntau xeb -} tiv taus cov hlau yog feem ntau los ntawm cov neeg siv tsis tau hlau. Qib 316 Stainless hlau feem ntau suav hais tias yog ib qho zoo tshaj plaws General tsis kam, tshwj xeeb hauv kev ntxiv ntawm Molybdenum. Rau ntau dua cov kev mob heev corrosive, "Super Austenitic" qib zoo li 904l lossis "Super Duplex" steels siv. Qhov muaj txiaj ntsig zoo tshaj plaws yog pom nyob rau hauv cov alloys tshwj xeeb zoo li hastelloy lossis inconel, tab sis cov no feem ntau yog feem ntau tsuas yog "hlau."
** Puas muaj 4140 hlau xeb? **
Yog, 4140 hlau tsis xeb. Nws yog chromium- molybdenum} {{{%) los tsim passive txheej uas ua rau steel hlau xeb-resistant. Thaum raug rau ya raws thiab oxygen, 4140 hlau yuav tsim hlau oxide, uas yog xeb. Txhawm rau tiv thaiv kev xeb, nws yuav tsum muaj cov khaub ncaws tiv thaiv xws li xim, roj, plating, lossis hmoov txheej.
** Tuaj yeem 4140 hlau yuav khoov? **
Yog, 4140 hlau tuaj yeem khoov duav, tab sis nws txoj hlua khi nyob ntawm nws qhov mob. Nyob rau hauv nws annealed (muag) lub xeev, nws yog tus condile thiab tuaj yeem khoov duav tsis muaj teeb meem ntau. Txawm li cas los xij, nyob rau hauv nws nyuaj, kub {-}}}} {ua rau muaj zog heev thiab tawg yog qhov kev sim ua kom khoov nws. Txog kev ua tiav ntawm cov tawv tawv tawv tawv 4140, cua sov nws mus rau qhov kub tshwj xeeb (kub khoov) yog feem ntau tsim nyog.
** Dab tsi ntawm cov hlau tsis tuaj yeem ua haujlwm tawv? **
Cov hlau uas tsis tuaj yeem ua tsis tau yooj yim los ntawm kev kho cua sov (quenching thiab tempering) yog cov uas muaj cov pa roj carbon ntau. Cov qauv piv txwv tshaj plaws yog qhov qis- cov ntsiab lus me me) zoo li AISI 10, thiab 1020. Tsis tas li ntawd, feem ntau cov roj av hlau tsis muaj zog, xws li cov hom 304 thiab 316, tsis tuaj yeem ua kom cov qauv tsis tau nyob ntawm chav tsev kub.
