Cov txheej txheem pib los ntawm cua sov cov khoom siv (rau kub los yog sov extrusion). Nws yog ces loaded rau hauv lub thawv nyob rau hauv xovxwm. Lub dummy thaiv yog muab tso rau hauv qab nws qhov twg tus ram ces nias rau ntawm cov khoom kom thawb nws tawm ntawm qhov tuag. Tom qab ntawd lub extrusion yog stretched nyob rau hauv thiaj li yuav ncaj nws. Yog tias xav tau cov khoom zoo dua ces nws yuav raug kho los yog txias ua haujlwm.
Qhov sib piv extrusion yog txhais raws li qhov pib ntu ntu ntu faib los ntawm cheeb tsam hla ntawm qhov kawg extrusion. Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm cov txheej txheem extrusion yog qhov piv txwv no tuaj yeem loj heev thaum tseem tsim cov khoom zoo.
Kub extrusion
Kub extrusion yog cov txheej txheem ua haujlwm kub, uas txhais tau hais tias nws ua tiav saum cov khoom siv rov ua dua tshiab kom cov khoom siv los ntawm kev ua haujlwm nyuaj thiab ua kom yooj yim rau thawb cov khoom los ntawm kev tuag. Cov extrusion kub feem ntau yog ua tiav ntawm kab rov tav hydraulic xovxwm uas muaj li ntawm 230 txog 11, 000 metric tons (250 txog 12,130 luv tons). Kev kub siab ntau ntawm 30 txog 700 MPa (4,400 txog 101,500 psi), yog li yuav tsum tau lubrication, uas tuaj yeem yog roj lossis graphite rau qis kub extrusion, lossis iav hmoov rau kub extrusion. Qhov loj tshaj qhov tsis zoo ntawm cov txheej txheem no yog nws cov nqi rau cov tshuab thiab nws cov kev tu.
Txias extrusion
Txias extrusion yog ua nyob rau hauv chav tsev kub los yog nyob ze ntawm chav tsev kub. Qhov zoo ntawm qhov kub extrusion yog qhov tsis muaj oxidation, lub zog ntau dua vim kev ua haujlwm txias, ua kom ntev dua, ua kom zoo dua qub, thiab nrawm extrusion ceev yog tias cov khoom raug kub luv.
Cov khoom uas feem ntau txias extruded muaj xws li: txhuas, tin, txhuas, tooj liab, zirconium, titanium, molybdenum, beryllium, vanadium, niobium, thiab hlau.
Piv txwv ntawm cov khoom tsim los ntawm cov txheej txheem no yog: cov hlab ntsha collapsible, cov khoom tua hluav taws, lub tog raj kheej shock absorber thiab iav blanks.
Kub extrusion
Sov extrusion yog ua tiav saum toj no chav tsev kub, tab sis hauv qab lub recrystallization kub ntawm cov khoom qhov kub ntawm 800 mus rau 1800 degree F (424 txog 975 degree). Nws feem ntau yog siv los ua kom tiav qhov sib npaug ntawm qhov yuav tsum tau muaj zog, ductility thiab kawg extrusion zog.
