Vim li cas extrusion zoo dua casting?

Los ntawm qhov kev xav ntawm cov yam ntxwv ntawm cov txheej txheem, extrusion yog txheej txheem ntawm cov khoom siv extruding mus rau hauv cov khoom ntev txuas ntxiv los ntawm cov pwm qhov nrog cov duab sib dhos tshwj xeeb. Casting, ntawm qhov tod tes, yuav tsum tau nchuav cov hlau molten rau hauv cov pwm ua ntej, ua kom txias thiab ua kom ruaj khov los ua cov khoom xav tau. Cov txheej txheem extrusion zoo ib yam li cov txheej txheem ntawm shaping elongated av nplaum nyob rau hauv txhais tes ntawm ib tug ceramic artist, thaum casting yog zoo li ua ntau yam duab ntawm chocolate siv pwm.
Ib qho txiaj ntsig tseem ceeb ntawm kev siv tshuab extrusion yog qhov siab precision ntawm cov khoom. Vim cov txheej txheem extrusion tsis tu ncua, qhov hla ntu loj thiab cov duab ntawm cov khoom raug txiav txim siab los ntawm pwm, yog li ua tiav qhov tseeb qhov tseeb thiab rov ua dua. Nyob rau hauv sib piv, lub shrinkage ntawm cov hlau thaum lub sij hawm casting txheej txheem yuav ua rau deviations ntawm lub tiav lawm cov khoom loj thiab cov pwm, cuam tshuam qhov raug.
Cov txheej txheem extrusion tuaj yeem tsim cov khoom lag luam nrog cov khoom zoo dua qub. Thaum lub sij hawm extrusion txheej txheem, cov khoom yog raug rau siab siab thiab siab shear rog, uas refine lub internal grains ntawm cov khoom, yog li txhim kho lub zog thiab toughness ntawm cov khoom. Txawm li cas los xij, tej zaum yuav muaj qhov tsis xws luag xws li porosity thiab shrinkage hauv cov khoom cam khwb cia, uas tuaj yeem txo qhov kev ua tau zoo tag nrho ntawm cov khoom.
Qhov sib xws thiab sib xws ntawm cov khoom extruded kuj yog ib qho ntawm lawv qhov zoo. Thaum lub sij hawm extrusion txheej txheem, vim lub nruam thiab niaj hnub ntws ntawm cov ntaub ntawv nyob rau hauv pwm, lub cev thiab tshuaj zog ntawm cov khoom kawg yog zoo ib yam. Casting cov khoom yuav muaj kev ua tau zoo tsis sib xws vim qhov tsis sib xws ntawm cov cua txias lossis kev sib cais ntawm cov hlau alloy.
Los ntawm qhov kev xav ntawm kev tsim khoom, kev siv tshuab extrusion feem ntau yog tsim nyog rau kev tsim khoom loj. Lub extruder tuaj yeem tsim cov khoom ntawm qhov ntev ntev, ib yam li cov khoom tsis tu ncua tawm ntawm cov kab sib dhos. Cov txheej txheem casting feem ntau yuav tsum tau ua kom txias thiab ua kom lub zog ntev ntev, nrog rau cov khoom tso tawm tsis pub dhau ib lub voj voog, uas ua rau nws tsis tshua muaj txiaj ntsig zoo dua li extrusion hauv cov khoom loj.
Nyob rau hauv cov nqe lus ntawm kev siv cov khoom siv, extrusion technology kuj yog ib puag ncig tus phooj ywg thiab kev lag luam. Cov khib nyiab tsim tawm thaum lub sij hawm extrusion txheej txheem yog me me, thiab cov khoom poob tsuas yog los ntawm kev txiav thiab kho qhov chaw. Cov txheej txheem casting tuaj yeem tsim ntau qhov chaw pabcuam xws li rooj vag thiab risers, uas feem ntau dhau los ua pov tseg thiab txo qis kev siv cov khoom siv.
Tsis tas li ntawd, cov txheej txheem extrusion kuj muaj lub zog zoo dua. Vim yog extrusion tau ua nyob rau hauv qhov kub thiab txias, lub zog noj yog tsawg dua piv rau high-temperature melting nyob rau hauv casting. Qhov no tsis tsuas yog txo cov nqi tsim khoom, tab sis kuj txo qhov cuam tshuam ntawm kev siv hluav taws xob rau ib puag ncig.
Thaum kawg, cia peb piv cov txheej txheem no los ntawm kev ua piv txwv. Piv txwv tias peb yuav tsum tsim ib pawg ntawm aluminium alloy qhov rais thav duab. Yog tias siv tshuab extrusion, peb tuaj yeem ua kom sov aluminium alloy pas nrig rau qhov kub thiab txias thiab tom qab ntawd extrude rau hauv lub qhov rais thav duab profile los ntawm extruder thiab pwm. Tom qab txias thiab shaping, cov profiles tuaj yeem siv los sib sau ua ke qhov rais. Tag nrho cov txheej txheem tsis tsuas yog muaj kev ua haujlwm siab, tab sis kuj muaj cov khoom ruaj khov, kev siv cov khoom siv siab, thiab cov nqi tsim khoom tsawg. Yog tias siv tshuab casting, peb yuav tsum tau yaj cov aluminium alloy thiab hliv rau hauv pwm, tos kom nws txias thiab khov ua ntej ua haujlwm tom ntej. Cov txheej txheem no tsis tsuas yog siv sijhawm ntev xwb, tab sis kuj tseem tuaj yeem tsim cov khoom pov tseg tseem ceeb thaum lub sij hawm casting thiab tom qab ua tiav.