Kev siv thev naus laus zis thiab cov txheej txheem extrusion rau hollow aluminium profiles thiab cov khoom aluminium profiles yog qhov pib zoo ib yam; qhov txawv yog nyob rau hauv cov pwm siv.
Rau cov khoom aluminium profiles, nws tsuas yog tsim nyog rau lub tshuab tsim qhov hauv pwm, uas tso cai rau extrusion yuav tsum tau nqa tawm siv lub extrusion xovxwm. Rau hollow aluminium profiles, cov pwm muaj lub siab tuag thiab qis dua. Cov tuag qis yog machined los tsim cov duab sab nraud ntawm aluminium profile, thaum lub cev tuag sab saud yog machined rau hauv cov tub ntxhais uas ua rau qhov hollow. Cov tub ntxhais tuag sab saud yog tom qab ntawd tsau rau hauv cov kab noj hniav ntawm qhov tuag qis, thiab lub vuam chamber kuj tseem tsim los ntawm cov tuag sab saud thiab qis. Qhov no ua kom cov txhuas tuaj yeem nkag mus rau hauv pwm kab noj hniav,
Lub sab sauv tuag kuj yog tsim los nrog ib tug diverging qhov, los ntawm uas txhuas ntws mus rau hauv lub vuam chamber. Nyob rau hauv qhov kub thiab txias siab, aluminium yog re-welded, tsim cov kab noj hniav ntawm extrusion pwm, uas ua rau lub hollow aluminium profile peb xav tau. Txij li cov pwm siv rau qhov hollow aluminium profile muaj ob ntu, peb hu nws ua ke pwm. Ib txhia kuj hu nws ua ib tug diverging pwm vim hais tias lub Upper tuag muaj ib tug diverging qhov.
