Hauv kev lag luam ntawm cov txheej txheem hlau dov,kub rolls, thaub qab rollsthiabrolls ua haujlwmua lub luag haujlwm tseem ceeb hauv kev ua kom cov txheej txheem zoo thiab kev ua haujlwm zoo. Peb cov khoom no ua haujlwm ua ke los tsim thiab kho cov khoom siv hlau, ua rau lawv tseem ceeb rau kev ua tiav ntawm tag nrho cov haujlwm.

Kub rolls yog ib feem tseem ceeb ntawm cov txheej txheem hlau dov raws li lawv yog lub luag haujlwm rau cua sov cov hlau mus rau qhov kub thiab txias uas yuav tsum tau ua rau shaping thiab sib sau. Qhov kub thiab txias ntawm cov menyuam kub yog ua tib zoo tswj xyuas kom pom cov ductility ntawm cov hlau, ua kom yooj yim rau kev tuav thiab tsim. Yog tsis muaj kub rollers, nws yuav luag tsis yooj yim sua kom ua tiav qhov xav tau shaping thiab shaping ntawm hlau.

Thaum cov hlau tau rhuab mus rau qhov kub thiab txias, nws dhau los ntawm kev ua haujlwm yob, uas yog lub luag haujlwm rau shaping cov khoom. Cov yob ua haujlwm yog tsim los nrog cov profile tshwj xeeb thiab kev teeb tsa kom tau txais cov khoom kawg uas xav tau, txawm tias nws yog cov ntawv tiaj tus, zoo li tus tuav lossis cov raj seamless. Qhov tseeb thiab qhov zoo ntawm kev ua haujlwm yob ncaj qha cuam tshuam rau qhov zoo thiab qhov tseeb ntawm cov khoom kawg.

Thaum kub thiab ua haujlwm yob ua lub luag haujlwm tseem ceeb hauv kev tsim thiab tsim cov hlau, cov yob rov qab muab cov kev txhawb nqa tsim nyog thiab ruaj khov rau tag nrho cov txheej txheem. Backup rollers ua haujlwm nrog rau kev ua haujlwm chais los muab kev txhawb siab ntxiv thiab kev txhawb nqa kom ntseeg tau tias cov hlau tsim tau raug. Yog tias tsis muaj kev txhawb nqa yob, cov yob ua haujlwm yuav tsis tuaj yeem ua kom zoo thiab tsim cov hlau, uas ua rau muaj kev tsis sib haum xeeb thiab tsis zoo ntawm cov khoom kawg.

Hauv cov ntsiab lus, cov yob kub, cov yob rov qab thiab cov yob ua haujlwm yog cov khoom tseem ceeb hauv cov txheej txheem hlau dov. Txhua yam khoom ua lub luag haujlwm tshwj xeeb thiab tseem ceeb hauv kev ua kom zoo, ua haujlwm tau zoo thiab raug ntawm cov txheej txheem. Los ntawm kev nkag siab txog qhov tseem ceeb ntawm cov khoom no, cov tuam ntxhab thiab cov kws tsim khoom tuaj yeem ua haujlwm kom zoo dua lawv cov hlau dov ua haujlwm kom tau txais txiaj ntsig zoo dua.