Dab tsi yog qhov kev kho cua sov hardness ntawm Cr12 tuag steel
Hardness yog raws li kev kho cua sov, tsis yog tus nqi ruaj khov, muaj qhov txwv ntau. Cr12MoV tom qab quenching kub 1010 degree, cua txias, 200 degree tempering, hardness yuav yog 58 ~ 60HRC. Tab sis lub ntsiab lus tseem ceeb yog tias muaj cov khoom siv txhim khu kev qha zoo thiab qhov chaw, nrog rau kev paub txog kev kho cua sov thev naus laus zis.
Cr12MoV steel yog cov pa roj carbon molybdenum txiv qaub steel, nws cov ntsiab lus carbon tsawg dua Crl2 steel, thiab ntxiv cov molybdenum, vanadium cov ntsiab lus, kom cov thermal ua cov khoom ntawm cov hlau, cuam tshuam toughness thiab carbide faib tau zoo dua.
Cov hlau muaj zoo hnav tsis kam, hardenability, hardenability, lub zog thiab toughness, thermal stability, compressive zog, nrog rau micro-deformation, kev ua tau zoo thiab dav adaptability. Lub softening kub yog 520 degree. Qhov loj-section tuaj yeem ua tiav hauv qab 4 hli, qhov hnav tsis kam ntawm cov hlau yog 3 mus rau 4 npaug ntawm cov hlau tsis tshua muaj hlau, thiab cov quenching ntim deformation me me. Hardening qhov tob: roj quenching 200 ~ 300mm.
Cov ntaub ntawv txuas ntxiv:
Tom qab kev kho mob cryogenic, cov quenched martensite tuaj yeem ua rau cov khoom tawg yooj yim heev, thiab tom qab ntawd hloov ultra-fine carbides rau hauv cemented carbide.
Rau martensite yam tsis muaj kev kho cryogenic, tsuas yog me me ntawm carbides yog precipitated nyob rau hauv ib cheeb tsam tom qab cryogenic kho. CR12MOV tuag steel txais kev siv tshuaj tua hluav taws kub tsawg. Raws li kev tswj hwm qhov hnyav thiab siab hnav tsis kam ntawm CR12MOV tuag steel, adhesion tsis kam ntawm ion nitriding, roj nitriding thiab ntsev da dej thiocyanate carburizing txheej feem ntau yog siv rau hauv kev kho cua sov uas tsis muaj tshuaj lom neeg.
Cov khaubncaws sab nraud povtseg ntawm peb hom kev kho cua sov uas tsis tshua muaj tshuaj lom neeg muaj kev cuam tshuam zoo heev rau adhesion. Ntawm lawv, ntsev da dej yog qhov zoo tshaj plaws. Stainless hlau kos duab tuag ua los ntawm CR12MOV tuag steel, tom qab roj nitrogen thiab carbon kev kho mob, kev pab lub neej ntawm ntau tshaj 30, 000 pieces.
Piv nrog rau cov pa quenching thiab tempering kev kho mob, lub neej kev pab cuam ntawm tib pwm yog nce los ntawm ntau tshaj 10 zaug.
