Lub zog tsim ntawm lub iav iav yog coj los ntawm ob qho ntawm qhov kev xav ntawm lub qhov muag thiab lub hauv paus ntawm lub hauv paus ntawm lub lubrication. Nrog rau kev siv technology thiab kev siv computer, txoj kev loj hlob ntawm lub ntiaj teb kev sib kis kab kev lag luam nyhav rau sab nrauv hniav, raws li kev txheeb cais, Kev siv cov tawv sib zog sib zog heev txhawb nqa lub teeb nyhav, kev siv lub tshuab thiab kev ua haujlwm zoo, uas nce tus ua haujlwm ntawm lub tshuab ua haujlwm ntawm ib theem.
Feem ntau, txheej tawv txheej (xws li siab, nruab nrab zaus los yog nplaim hluav taws xob) muaj kev pom tseeb ntawm kev sib hloov ntawm cov tawv txheej thiab tawv tsis sib zog. Qhov muab faib rau kev hnyav yog loj dhau, thiab qhov tsis zoo ntawm cov tawv tsis sib haum. Hardening ntawm tus ceg paus yog nyuaj, thiab nto deg yog yooj yim rau. Qhov nyuaj ntawm qhov tus hniav raug qis tshaj (txog HRC55), yog li cov ntawv thov tuaj yeem txo qis.
Deep carburizing, quenching thiab kev sib tsoo pob txha muaj qhov muaj siab, qhov chaw siab tawv (HRC58 + 4), hnav hom tawv tsho tawv txheej, thiab lwm yam, tshwj xeeb tshaj yog tsim rau qis qis-hnyav iav, uas muaj siab tawv thiab . Cov tshuaj tiv thaiv tempered yog multiplied, thiab lub zog qis zog yog nce ntau tshaj 50% piv nrog tempered iav.
Bevel zog sawv cev rau txoj kev loj hlob ntawm kev lag luam thiab cov iav transmitter.
