Dab tsi yog qhov cua sov txoj kev kho mob ntawm kev thauj tog rau nkoj bolts

Cov thauj tog rau nkoj muaj peb txoj kev hauv qab no thaum kev kho cua sov, uas yog peb hom steel, quenched thiab tempered steel, caij nplooj ntoos hlav steel, thiab carburized steel. Cov hlau no muaj qhov kub sib txawv thaum kho cov cua sov thiab ua kom sov. Tom qab ntawd peb tseem paub tias cov pa roj carbon tsawg tau xaiv, uas yog, cov hlau alloy yog tempered ntawm qhov kub tsawg hauv qab 250 degrees Celsius tom qab quenching. Cov pa roj carbon nruab nrab yog siv nrog cov ntsiab lus ntawm cov pa roj carbon ntau. Tom qab quenching, nws yog tempered ntawm qhov kub thiab txias (500 txog 650 degrees Celsius) (qhov hu ua quenching thiab tempering kho). Cov txheej txheem no tuaj yeem ua cov thauj tog rau nkoj Thaum muaj cov khoom siv siab siab kom muaj lub zog txaus, yog li cov hlau ua los ntawm cov khoom no feem ntau hu ua quenched thiab tempered steel. Yog tias koj xav tau cov thauj tog rau nkoj bolts tau txais lub zog siab, uas yog, ua kom cov thauj tog rau nkoj bolts nyuaj, tab sis, theej los txo cov yas thiab tawv, kev ntsuas kub tsis tshua muaj kev kub ntxhov tuaj yeem saws rau kub-muaj quenching thiab tempering kev kho mob nrog qis carbon cov ntsiab lus, thiab cov npe" super High-lub zog steel" ;. Yog hais tias cov pa roj carbon ntsiab lus yog nruab nrab ntawm cov pa roj carbon nruab nrab thiab cov pa roj carbon siab, xws li 60 steel thiab 70 steel, thiab qee cov pa roj carbon ntau yog 80 steel thiab 90 steel, yog tias cov hlau no siv los ua kev txhawm, tom qab ntawd txhawm rau kom paub tseeb tias muaj feem ntau elastic txwv, tso tawm cov kev txwv thiab nkees kev txwv, nws yog qhov tsim nyog los siv qhov kub thiab txias nruab nrab tom qab quenching kom tiav cov qauv no.