Lub qhov tuag tuag tuaj yeem piav qhia los ntawm qhov ua piv txwv: muab cov kab hauv ko taw tso rau hauv qab phaj ntawm lub twj tso kua mis, thaiv cov qhov tso pa tawm, rub tawm lub piston, txhim kho cov av nkos daj hauv lub tog raj kheej, thiab ntxig lub piston kom ncua lub twj tso kua mis. rau" ua kom muaj" ;. Tau txais ib qho kev nthuav tawm" daim duab peb sab hlau" ;. Lub taub no yog kev tuag extrusion. Qhov tseeb, lub ntsej muag tuag tuag zoo ib yam li qhov no, nrog lub zog muaj zog, siv cov hmoov hlau metallurgy cemented carbide raws li" hauv qab phaj", thiab siv lub tshuab hydraulic rau" ntxiv" ;.
Raws li cov khoom sib txawv tsim, cov pwm tuaj yeem muab faib ua cov pwm hlau thiab cov pwm tsis yog pwm. Cov hlau pwm tau muab faib ua: cov pwm kub tuag (tsis siv neeg hlau tsis tuag, hlau casting), thiab cov hlau tshuab ua kom zoo; cov hlau tsis muaj pwm kuj raug faib ua: pwm yas pwm thiab pwm pwm tsis-inorganic. Raws li cov khoom sib txawv ntawm cov pwm nws tus kheej, cov pwm tuaj yeem muab faib ua: pwm pwm, hlau pwm, nqus pwm, paraffin pwm thiab lwm yam. Ntawm lawv, nrog kev txhim kho nrawm ntawm polymer plastics, cov yas pwm txuas yog ze rau tib neeg' s lub neej. Cov yas pwm yas feem ntau yuav muab faib ua: kev txhaj tshuaj moulds, extrusion moulds pwm, roj-pab kev txhaj tshuaj pwm thiab lwm yam.
