(1) Lamination thiab suav nrog
Thaum ua tiav cov yeeb nkab kawg, cov neeg ua haujlwm yuav tsum ua tib zoo tshuaj xyuas cov yeeb nkab kawg rau lamination thiab suav nrog. Cov kav hlau tsis raug tso cai kom muaj lamination lossis suav nrog uas txuas mus rau cov yeeb nkab kawg lossis bevel nto thiab muaj qhov ntev ntev tshaj 6.4 hli. Cov yeeb nkab xaus nrog lamination lossis suav nrog ntau dua 6.4mm tuaj yeem rov txiav kom txog thaum tsis muaj lamination lossis suav nrog ntau dua 6.4mm.
(2) Hard Spot
Cov kav hlau yuav tsum tsis txhob muaj qhov nyuaj tshaj 50 hli nyob rau hauv ib qho kev taw qhia thiab nrog ib tug hardness tus nqi siab tshaj 35HRC (327HBW / 345HV10). Yog tias muaj, lawv tuaj yeem raug tshem tawm.
(3) Bevel thiab hauv paus ntsej muag
Tshwj tsis yog tias tus neeg siv khoom tau teev tseg, cov kav hlau steel nrog cov phab ntsa tuab dua 3.2 hli yuav tsum muaj lub kaum sab xis ntawm 3 0 degree rau 35 degree ; lub hauv paus lub ntsej muag yuav tsum yog 1.6 ± 0.8 hli, thiab lub bevel lub kaum sab xis yuav tsum tau ntsuas los ntawm lub perpendicular mus rau lub axis ntawm cov yeeb nkab steel.
Txhawm rau tshem tawm cov burrs sab hauv tshwm sim thaum lub sijhawm ua tiav cov yeeb nkab, lub chamfer ntawm cov yeeb nkab kawg yuav tsum tsis pub tshaj 7 degree, thiab nws qhov ntsuas yuav tsum yog raws li qhov nruab nrab ntawm cov yeeb nkab steel.
