Nyhuv ntawm Cryogenic kho mob ntawm 45 # Quilting raj rau High Speed ​​Steel

Kev txheeb ze txhawm rau txhawm rau txhaws pob txha tom qab 45 # quilting tube cryogenic kho mob yog 40% nce. Tom qab lub sij hawm ntev cryogenic kho, tus txheeb ze hnav tsis tshua muaj zog nrog tsis muaj qhov hloov loj ntawm kev ua siab tawv.
Nyob hauv tus txheej txheem ntawm kev kho mob cryogenic, ib qho loj ntawm cov khoom qub uas muab khaws cia yog hloov mus rau hauv martensite, tshwj xeeb tshaj yog cov tshuaj supersaturated metastable martensite yuav txo qhov supersaturation thaum lub sij hawm los nag los ntawm -196 ℃ rau chav kub, nag lossis daus thiab dispersion, Qhov tsuas yog 20-60A thiab kev sib raug zoo nrog rau matrix ntawm ultrafine carbides, tuaj yeem txo qhov martensite lattice distortion, txo micro txoj kev nyuab siab, thiab zoo dispersed carbide yuav dislocated yas deformation ntawm cov ntaub ntawv Siv ce, li no strengthening lub koom haum matrix.
Nyob rau tib lub sij hawm, raws li cov ultrafine carbides yog precipitated thiab uniformly muab faib rau lub martensite matrix, cov ciam ciam phom loj ciam rau kev ua kom tsis muaj zog, thaum lub sij hawm kev hloov ntawm matrix qauv tsis tsuas weakens cov theem ntawm lub impurity ntsiab ntawm cov ciam ze tab sis kuj ntxiv dag zog ntawm cov ciam txhawb nqa Kev nyuab, ua kom txhim kho cov kev ua tau zoo ntawm txoj kev kub ceev, lub zog, qhov teeb meem toughness thiab hnav tuaj yeem ua tau zoo tuaj. 45 # Cov tawv ntoo hnyav pwm siab heev, nws txoj kev hnav hnyav kuj zoo li, xws li kev ua kom muaj zog ntawm 60HRC mus rau 62-63HRC, 45 # Cov raj ntim hnyav hnyav ntxiv ntawm 30% -40%