Koj paub ntau npaum li cas txog laum tail screws

Self tapping screws: mechanical kev ua tau zoo
Lub plawv hardness: tus qauv tus nqi HRC28-38. Thaum kuaj, nqa ib ntu uas yog 1-2 npaug ntawm txoj kab uas hla ntawm tus Tsov tus tw rau kev ntsuas. Yog tias qhov ntev ntawm qhov ntsuas yog luv dhau, nws tuaj yeem kos ua ntej thiab tom qab ntawd kuaj qhov tawv
Deg hardness: Txheem MINHV450
Carbonized txheej: Txheem 4 # -6 #: 0.05-0.18mm, 8 # -12 #: 0.10-0.23mm, 14 #: 0.13_0.28mm. Lub hom phiaj tseem ceeb ntawm carburization yog txhawm rau txhim kho qhov tawv tawv thiab ua kom lub zog ntawm cov hniav. Yog hais tias lub decarburization tob dhau lawm thiab cov carburization tsis txaus, lub zog ntawm cov hniav yuav tsis ua raws li qhov yuav tsum tau ua, uas txhais tau hais tias cov hniav yuav raug puas ntsoog thaum lub sij hawm ntsia hlau.