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Cov khoom siv ua tau zoo 12CrNi3A alloy hlau qauv
Kev piav qhia
12CrNi3A yog cov hlau ua los ntawm cov hlau zoo uas muaj cov tshuaj lom neeg thiab cov khoom siv kho tshuab ua raws li cov cai ntawm tus qauv tub rog hauv tebchaws GJBB1951-94. Vim nws muaj kev ua tau zoo heev, cov khoom siv no siv dav hauv kev tsim khoom siv dav hlau, aerospace, riam phom, thiab lwm yam khoom siv siab.
Cov ntsiab lus tseem ceeb ntawm 12CrNi3A hlau suav nrog chromium (Cr) thiab nickel (Ni), thiab nws cov tshuaj lom neeg muaj pes tsawg leeg yog:
| Cov pa roj carbon (C) | Chromium (Cr) | Nickel (Ni) | Manganese (Mn) | Silicon (Si) |
| 0.10% ~ 0.16% | 0.60% ~ 0.90% | 2.75% ~ 3.25% | 0.30% ~ 0.60% | 0.17% ~ 0.37% |
Qhov ntxiv ntawm chromium ua rau cov hlau ua kom tawv thiab tiv taus xeb, thaum nickel ua rau cov khoom siv tawv thiab ua haujlwm tau zoo hauv qhov kub qis. Kev tsim cov khoom sib xyaw ua ke no ua rau 12CrNi3A hlau muaj zog heev thaum tseem muaj qhov sib npaug zoo ntawm kev ua yas thiab kev tawv.
Kev kho cua sov thiab cov khoom siv kho tshuab
12CrNi3A hlau feem ntau yog kho nrog kev quenching thiab qis-kub tempering cua sov kho cov txheej txheem kom tau txais cov qauv martensite tempered, yog li ua tiav kev sib xyaw ua ke ntawm lub zog siab thiab siab toughness. Raws li tus qauv GJBB1951-94, nws cov khoom siv kho tshuab feem ntau yuav tsum tau ua raws li hauv qab no:
| lub zog tensile | Lub zog tawm los | Kev ntev | Kev cuam tshuam tawv |
| ≥980 MPa | ≥685 MPa | ≥11% | ≥86 J |
Cov khoom siv kuj muaj cov yam ntxwv zoo carburizing. Tom qab carburizing thiab quenching, qhov chaw tuaj yeem tau txais qhov nyuaj siab thiab hnav tsis kam, thaum lub hauv paus tseem muaj zog txaus, ua rau nws tsim nyog rau kev tsim cov khoom uas tiv taus kev sib txhuam hnyav thiab kev cuam tshuam.
Cov Ntawv Thov Ib Txwm Muaj
Vim nws ua tau zoo heev, 12CrNi3A hlau feem ntau siv los tsim cov khoom tseem ceeb xws li cov iav, cov ncej, cov pas nrig txuas, thiab cov koob. Nws qhov kev ntseeg tau thiab kev ruaj khov tau pom tseeb hauv cov khoom siv tub rog, tshwj xeeb tshaj yog hauv cov kab ke sib kis tank, cov iav cav dav hlau, thiab cov khoom siv tsaws.
Sau luv luv
Raws li cov khoom siv pom zoo los ntawm lub teb chaws tus qauv tub rog GJBB1951-94, 12CrNi3A alloy structural steel muaj kev tsim qauv tsim, kev ua haujlwm ruaj khov thiab kev siv tshuab paub tab, thiab tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm cov khoom siv siab rau lub zog siab, siab toughness thiab hnav tsis kam.