Kev nruj qis zog thiab microscopic (siab zog) cov ntaub so ntswg. Qhov tsawg magnification microstructure ntawmbearing steelhais txog kev xoob xoob xoob xoob thiab kev sib cais, thiab lub microscopic (siab magnification) microstructure suav nrog cov txheej txheem annealing ntawm steel, carbide network, sawb thiab kua evolution, thiab lwm yam. Cov tshuaj carbide yog ib qho nyuaj thiab nkig, thiab nws cov teeb meem yog tib yam li cov nkig suav nrog. Lub network carbide txo qhov cuam tshuam ntawm cov hlau thiab ua rau cov qauv tsis sib xws, uas yooj yim rau deform thiab tawg thaum quenching. Banded carbides cuam tshuam rau annealed thiab quenched tempering microstructure thiab tiv taus qaug zog. Qhov zoo ntawm cov qauv qis thiab siab zog muaj qhov cuam tshuam zoo rau kev ua haujlwm thiab kev pabcuam lub neej ntawm cov kabmob dov, yog li muaj cov kev cai nruj rau cov qauv qis thiab siab zog hauv cov qauv khoom siv.
Cov kev cai nruj heev rau qhov tsis xws luag thiab sab hauv. Rau cov kabmob steel, qhov tsis xws luag muaj xws li tawg, slag suav nrog, burrs, caws pliav, oxide daim tawv nqaij, thiab lwm yam, thiab sab hauv muaj xws li shrinkage qhov, npuas, dawb me ntsis, loj porosity thiab segregation. Cov teeb meem no muaj kev cuam tshuam zoo rau kev ua cov bearings, bearing kev ua tau zoo thiab lub neej. Nws tau hais meej meej nyob rau hauv cov qauv ntawm cov khoom siv uas tsis raug tso cai.
Cov kev cai nruj carbide inhomogeneity. Hauv cov kabmob steel, yog tias muaj qhov tsis sib xws ntawm carbide faib, nws yog ib qho yooj yim los ua qhov tsis sib xws ntawm microstructure thiab hardness hauv cov txheej txheem ntawm kev kho cua sov. Qhov tsis sib xws ntawm cov hlau tsis sib xws ntawm cov hlau muaj qhov cuam tshuam zoo rau kev sib cuag qaug zog. Tsis tas li ntawd, qhov hnyav carbide tsis sib xws kuj tseem yooj yim rau kev tawg cov kabmob thaum lub sijhawm quenching txias, thiab carbide tsis sib xws kuj yuav ua rau txo qis ntawm cov kabmob lub neej. Yog li ntawd, nyob rau hauv bearing cov qauv, muaj cov kev cai tshwj xeeb rau txawv specifications ntawm steel.
nruj decarburization txheej txheej qhov tob yuav tsum tau. Muaj cov kev cai nruj ntawm qhov decarburization txheej ntawm cov hlau hauv cov qauv khoom siv. Yog tias cov txheej txheem decarburization ntau tshaj li qhov tau teev tseg ntawm tus qauv, thiab nws tsis raug tshem tawm tag nrho hauv cov txheej txheem ua ntej kev kho cua sov, nws yooj yim los tsim cov kab nrib pleb hauv cov txheej txheem ntawm kev kho cua sov quenching, uas ua rau cov khoom seem.
Nyob rau hauv cov kabmob steel cov txheej txheem, kuj tseem muaj cov kev cai nruj ntawm txoj kev smelting, oxygen cov ntsiab lus, annealing hardness, tawg, seem seem, txim kuaj, xa cov xwm txheej, cim thiab lwm yam.
Post lub sij hawm: Apr-12-2023