1. Blanking: Txiav cov ntawv hlau rau hauv cov duab thiab qhov ntau thiab tsawg los npaj rau kev stamping tom ntej.
2. Punching: Punching qhov hauv cov ntawv hlau rau kev teeb tsa lossis lwm yam haujlwm.
3. Khoov: Khoov cov ntawv hlau rau hauv cov ces kaum tshwj xeeb lossis cov duab los ua peb - qauv qauv.
4. Stretching: Stretching cov ntawv hlau los tsim cov kab noj hniav sib sib zog nqus los yog cov duab nyuaj.
5. Shaping: Fine -tu lub stamped qhov chaw kom ntseeg tau tias lawv qhov ntev thiab cov duab raws li qhov yuav tsum tau ua.
Txhua kauj ruam yuav tsum muaj kev tswj xyuas kom paub meej qhov zoo ntawm cov khoom kawg. Piv txwv li, kev txiav tsis raug thaum lub sij hawm blanking tuaj yeem ua rau muaj teeb meem tom qab stamping; Lub kaum sab xis tswj tsis raug thaum khoov tuaj yeem tiv thaiv cov khoom los ntawm kev sib sau ua ke.