Marginal Bearing yog lub chaw tsim khoom lag luam tshaj lij rau kev daws teeb meem ntawm cov thev naus laus zis ntawm kev kho tus kheej thiab cov roj ua ntej lub cev txij li xyoo 2010. Marginal bearing thaj chaw ntawm Jiashan, Zhejiang, qhov twg yog lub hauv paus tsim kev lag luam tus kheej thiab roj nplua nyeem ua ntej cov roj hauv Suav teb. Cov.
Lub Vev Xaib : www.marginalbearings.com
1. Lub hauv paus tseem ceeb ntawm kev tiv thaiv kom tsis txhob tawg nyob hauv qhov chaw cov kabmob
Qhov tawg tawg ntawm cov kabmob qhov chaw thaum cov txheej txheem quenching vim kev ntxhov siab sab hauv tsim tawm yog ntau dua qhov tawg lub zog ntawm cov khoom, hu ua quenching crack. Kev ntxhov siab sab hauv muaj xws li kev hloov pauv ntawm lub cev thiab kev kub ntxhov thiab txias thiab ua kom muaj kev kub ntxhov siab, uas yog qhov tseem ceeb ua rau txhawm rau txhawm chim. Ua ke nrog kev tsim cov khoom sib txawv ntawm cov kabmob, qhov ua rau kom muaj kev sib cav sib ceg yog qhov nyuaj dua, suav nrog cov khoom siv hlau tsis zoo (cov khoom siv tsis yog xim hlau, lub ntsej muag seem, cov plaub hau, cov kab carbide sib cais, thiab lwm yam), ib feem ntawm lub cev tsis xws luag (ib feem ntawm phab ntsa tuab) Cov khoom tsis zoo, cov roj roj thiab lub ntsej muag ntse, thiab lwm yam), qhov tsis xws luag ntawm cov txheej txheem ua ntej (kev sib tsoo, txias tsim kev ntxhov siab, qhov cuab yeej sib sib zog nqus, thiab lwm yam) thiab cov txheej txheem tsis zoo (quenching kub tsis dhau, tsis muaj cua txias, ua rau lub ntsej muag txiav txim siab, quenching thiab rework txheej txheem tsis tsim nyog).
2. Cov yam ntxwv Morphological thiab kev tsom xam ntawm txoj kev ua kom cov nrib pleb hauv qhov chaw ua cov khoom
Qhov quenching tawg duab ntawm cov kabmob qhov chaw yog qhov tsis xwm yeem, qee qhov hauv kev hloov pauv, qee qhov nyob rau hauv kev coj ua ntev, qee qhov saum npoo ntawm feem ntawm cov seem ntawm cov duab ntawm "S" lossis "Y", thiab qee qhov tawg mesh. Qhov tob ntawm cov quenching cov kab nrib pleb kuj tseem sib txawv, tab sis qhov tob tshaj yog qhov loj dua li qhov sib tsoo hlawv tawg. Saib xyuas qhov kev tawg ntawm cov qhov ntsiag to, nws tuaj yeem pom tias muaj cov roj, dej thiab cov xim kub ntawm lub cev pob txha tawg, thiab lub ntsej muag uas tsis muaj qhov tsis huv yog qhov zoo nkauj thiab zoo nkauj plooj (veneers). Saib xyuas los ntawm lub tshuab tsom metallographic, qhov tawg kis tau zoo rau hauv lub suab tsis sib haum, thiab tus Tsov tus tw yog tapered, feem ntau faib raws thaj tsam nplej. Lub ntsiab sib txawv ntawm kev tua tsis txaus thiab kev sib tsoo thiab cov khoom tawg yog tias tsis muaj lub qhov txiav tawm ntawm ob sab ntawm qhov tawg.
