Kev kho cua sov deformation ntawm cov iav carburized ncaj qha cuam tshuam rau qhov tseeb, lub zog, suab nrov thiab lub neej ntawm cov iav. Txawm hais tias cov txheej txheem sib tsoo cov iav ntxiv tom qab kev kho cua sov carburizing, qhov deformation tseem txo cov qib precision ntawm iav. Muaj ntau yam cuam tshuam rau kev deformation ntawm carburizing tshav kub kev kho mob, thiab tsuas yog los ntawm kev tswj ntau yam, lub deformation yuav tswj tau me me. Kev tswj cov iav deformation kuj yuav tsum tau daws nyob rau hauv tag nrho cov txheej txheem ntawm manufacturing iav.
(1) Qhov cuam tshuam ntawm iav khoom metallurgical yam ntawm deformation
Kev ntsuam xyuas tau pom tias qhov siab dua qhov hardenability ntawm steel. Qhov loj dua qhov deformation. Thaum cov tub ntxhais hardness siab dua 40HRC, qhov deformation yuav nce ntxiv. Yog li ntawd, muaj qee yam yuav tsum tau ua rau hardenability ntawm steel, thiab qhov nqaim ntawm hardenability cheeb tsam. Qhov ruaj khov dua qhov deformation, steel mills yuav tsum tau muab "tsawg thiab ruaj khov deformation" steel. A1 / N cov ntsiab lus piv yog tswj nyob rau hauv thaj tsam ntawm 1 txog 2.5, uas tuaj yeem nqaim thaj tsam hardenability thiab txo qhov deformation. Tsis tas li ntawd, lub thav duab sib cais thiab banded qauv ntawm cov khoom cuam tshuam rau qhov tsis sib xws deformation thiab tsis sib xws carburization ntawm spline qhov ntawm lub iav.
(2) Cov txiaj ntsig ntawm kev npaj kho cua sov ntawm iav deformation
Ntau dhau normalizing hardness, mix crystals, ib tug loj npaum li cas ntawm sorbite los yog Widmanstatten qauv yuav ua rau kom lub deformation ntawm lub puab qhov, yog li forgings yuav tsum tau kho nrog kub-tswj normalizing los yog isothermal annealing.
(3) Cov nyhuv ntawm cov txheej txheem carburizing ntawm deformation
Tsis sib xws ntawm qhov kub thiab txias. Lub uniformity ntawm cov pa roj carbon txheej thiab cov uniformity ntawm cov cua txias nruab nrab kub txhua yam cuam tshuam rau lub iav deformation, thiab qhov siab dua qhov kub ntawm carburizing, lub thicker txheej carburizing. Tsawg roj kub thiab loj iav deformation. Yog li ntawd, nws yog ib qho tsim nyog los txhim kho cov cuab yeej, txhim kho cov txheej txheem, thiab txhim kho qhov zoo ntawm cov iav kub kho.
(4) Cov nyhuv ntawm quenching ntawm deformation
Lub quenching thiab txias tus cwj pwm yog qhov tseem ceeb tshaj plaws uas cuam tshuam rau lub iav deformation. Lub deformation ntawm cov roj kub quenching yog me dua li cov roj txias quenching, thiab nws yog feem ntau tswj ntawm 100 degree ± 120 degree. Lub peev xwm txias ntawm cov roj kuj tseem ceeb heev rau deformation. Ob txoj kev nplawm thiab kev siv zog cuam tshuam rau qhov deformation, thiab lub zog disc quenched los ntawm lub siab quenching xovxwm, raws li qhov deformation ntawm ntau lub zog. Kho qhov tsis sib xws ntawm cov hluav taws kub xovxwm kom txo tau qhov deformation, kho lub siab ntawm lub puab thiab sab nraud tuag thiab expansion core block, qhov loj ntawm cov roj txhaj ntim ntawm txhua ntu thiab lub rooj ua haujlwm sab saud kom tswj tau qhov deformation.
