Hardenability thiab cuam tshuam Toughness ntawm Pob Zeb Sib Tsoo Pob Hlau

Pob zeb steel pob lub pob yog qhov tseem ceeb ntawm cov pob zeb pob thiab qhov khoom siv tsis tseem ceeb rau lub pob zeb. Cov kev ua tau zoo ntawm cov hlau pob ncaj qha cuam tshuam rau kev siv cov ua haujlwm. Ntawm no peb qhia cov tawv tawv thiab kev cuam tshuam toughness ntawm lub pob steel.

Hardenability: hais txog qhov tob ntawm txheej txheej tawv nyob hauv qee yam kev mob.

Hardenability: hais txog qhov nyuaj ua tiav los ntawm martensite tus qauv tsim tom qab quenching, uas feem ntau nyob ntawm cov pa roj carbon cov ntsiab lus ntawm martensite.

A1 yog theem hloov hloov pib kab lossis theem hloov hloov kab kawg thaum cua kub lossis cua txias yog qeeb heev.

Ac1 yog hais txog txoj kev pib ntawm theem hloov ntawm ib qho ntawm cov nqi cua sov.

Ar1 yog kab kawg ntawm kev hloov chaw nyob rau ntawm qee qhov ntsuas cua txias

Cuam tshuam kev siv tshuaj kho cua sov: cov tshuaj molecules nkag rau hauv nruab nrab yog decomposed los tsim cov atoms uas tuaj yeem nkag mus rau cov ntsiab lus

Kev rho tawm los ntawm kev siv tshuaj kho cua sov: hais txog cov txheej txheem uas cov atoms yog nqus tau los ntawm cov hlau txheej hauv qab qhov tias lub hauv paus ua kom muaj peev xwm ua tau ib qho kev daws teeb meem nrog qee yam kev solubility nrog lub hauv paus hlau.

Diffusion ntawm kev kho cua sov tshuaj: Nws txhais tau hais tias lub zog atoms yog nqus los ntawm cov hlau saum npoo thiab ib qho concentration gradient yog tsim nruab nrab ntawm cov nplaim thiab cov tub ntxhais. Nyob rau ntawm qhov ntsuas kub, qhov tob ntawm atoms yog tsav mus rau sab hauv los ntawm cov concentration gradient thiab diffuse rau sab hauv kom tau txais qee yam tob ntawm infiltration.

Cov peev txheej carbon (kev kho cua sov tshuaj lom neeg): hais txog cov pa roj carbon ntau ntawm cov txheej txheem steel thaum lub carburizing cov huab cua thiab saum npoo ntawm cov hlau tau mus txog qhov sib npaug dynamic. Cov pa roj carbon peev xwm nthuav dav lub zog ntawm cov cua sov roj carburizing muaj peev xwm.

Lub zog: hais txog qhov tsis kam ntawm cov ntaub ntawv hlau rau kev puas tsuaj (ntau yas deformation lossis pob txha tawg) nyob rau hauv lub zog zoo li qub. Vim hais tias lub nra ua rau hauv cov qauv ntawm nro, compression, khoov, shear, thiab lwm yam, lub zog tseem muab faib rau lub zog tensile, compressive zog, dabtsi yog khoov lub zog, shear lub zog thiab lwm yam. Muaj feem ntau muaj kev sib raug zoo ntawm ntau lub zog. Feem ntau, lub zog tensile siv tau yog qhov ntsuas pib qhov ua tau zoo tshaj plaws hauv kev siv.

Plasticity: hais txog qhov muaj peev xwm ntawm ib qho khoom siv hlau los hla ntawm yas deformation (ruaj khov kho tas mus li) tsis muaj kev puas tsuaj nyob rau hauv lub nra.

Nws tuaj yeem pom tseeb los ntawm cov tshuaj lom neeg muaj pes tsawg leeg kom muaj cov pa roj carbon ntau ntxiv, uas yog raws li qhov ua kom lub zog thiab hnav tsis kam ntawm cov steel pob, kom ntseeg tau tias cov hlau tawv puag ncig yooj yim, thiab cov hlau puag ncig nrog lub zog zoo dua tuaj yeem lav sab hauv thiab sab nraud ntawm cov khoom siv steel. Kev sib txawv ntawm cov tawv tawv, yog li txhawm rau kom muaj lub zog sib kis sib kis tau zoo ntawm lub pob steel nyob ntawm ore hauv cov khaub ncaws hnav thiab sib tsoo ua haujlwm, thiab txawm nyob hauv lub tshuab kev sib tsoo tus kheej, kom paub tseeb tias lub pob steel tsis tawg thiab puag ncig, thiab cov khoom sib tsoo zoo dua.

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