Slewing bearings tau muab faib ua ob hom kev hnyav, qhov tseem ceeb ntawm txoj kab uas tsis tshua muaj siab tawv nqaij, qhov tseem ceeb ntawm kev chim siab tsis muaj zog, thiab qhov kub siab ntawm ob hom kev hnyav ntawm lub cev tsis yog tib yam.
1. Irreversible temper brittleness tseem ceeb lub cheeb
Lub nplhaib sib daj sib luag tsuas yog tshwm sim thaum kub kub li 250-400 ° C. Tom qab ua tiav kev npau taws tiav lawm, tus chiming hauv ntu no rov qab mus txog thaum tau hais txog qhov yuav tsum tau ua kom txias.
2, rov qab ua siab dua kev ntxhov siab
Qhov ntsuas kub ntawm kev sib tua yog 400-650 ° C. Thaum lub slewing kev coj tus kheej yog tempered, nws sai cools. Nws tsis tuaj yeem nyob hauv thaj tsam ntawm 400-650 ° C ntev ntev lossis qis txias. Txwv tsis pub, qhov tshwm sim catalytic yuav tshwm sim dua.
Cov kawm ntawm brittleness ntawm lub nplhaib ntawm lub nplhaib muaj feem xyuam rau cov hlau hlau. Yog hais tias cov hlau muaj siab hauv manganese, chromium, silicon, nickel thiab nkig, siab npaum li cas cov ntsiab lus ntawm molybdenum, tungsten yog, thiab brittleness yog tsawg, yog li thaum lub nplhaib sib npaug yog tempered, tsim hlau yuav tsum tau xaiv. Khoom siv los xyuas kom meej tias lub nplhaib tua tau raws li qhov tsim nyog brittleness.
