1, qhwv cov yob
Thaum sib tov, muaj plaub qhov xwm txheej ntawm cov roj hmab nyoos ntawm cov menyuam ntawm cov roj hmab sib xyaw zeb.
Qhov xwm txheej no tshwm sim thaum lub yob kub qis dhau los yog cov roj hmab tsis muaj zog, cov roj hmab nyob hauv pawg ntawm cov roj hmab zawv zawg, tsis tuaj yeem nkag mus rau hauv yob seam, lossis tsuas tuaj yeem tawg thaum yuam kom nias rau hauv.
Qhov teeb meem no tshwm sim thaum cov roj hmab yog siab elastic xeev, ob qho tib si yas ntws, tab sis kuj tsim nyog siab elastic deformation, roj hmab los ntawm cov yob sib nrug tom qab tsuas yog qhwv rau hauv pem hauv ntej cov menyuam, conducive rau kev sib tov ua hauj lwm thiab compounding tus neeg saib xyuas nyob rau hauv cov roj hmab dispersion.
Qhov thib peb qhov teeb meem tshwm sim thaum kub siab dhau lawm, roj hmab liquidity nce, intermolecular quab yuam txo, elasticity thiab lub zog txo, ces cov zaj duab xis yuav tsis tau muab qhwv nruj nreem nyob ib ncig ntawm lub chais thiab ua lub hnab zoo li, tshwm tawm ntawm lub rollers los yog rupture tshwm sim, yuav tsis yog kev sib xyaw ua haujlwm.
Qhov xwm txheej thib plaub tshwm sim ntawm qhov kub siab dua, qhov twg cov roj hmab hloov pauv los ntawm lub xeev siab elastic mus rau lub xeev viscous ntws, thiab elasticity thiab lub zog yuav luag ploj, ua rau nws nyuaj rau txiav cov roj hmab. Yog li ntawd, qhov kub ntawm kev sib tov yuav tsum tau tswj kom cov roj hmab nyob rau hauv qhov teeb meem los pab txhawb txoj kev sib tov.
2, noj hmoov
Hmoov noj theem yog hais txog cov txheej txheem ntawm kev sib xyaw ua ke rau hauv cov roj hmab. Tom qab cov roj hmab qhwv cov menyuam, txhawm rau ua kom cov khoom sib xyaw ua ke rau hauv cov roj hmab kom sai li sai tau, yuav tsum muaj qee yam ntawm cov roj hmab uas khaws cia rau ntawm qhov kawg ntawm cov menyuam yaus.
Thaum cov khoom sib xyaw ntxiv, cov khoom sib xyaw yog coj mus rau hauv qhov zawj ntawm cov roj hmab stacked thiab tom qab ntawd coj mus rau hauv cov yob seam vim qhov nruam tig thiab hloov ntawm cov roj hmab stacked.
Nyob rau hauv tus txheej txheem ntawm kev noj cov hmoov, tus nqi ntawm pawg roj hmab yuav tsum yog nruab nrab. Yog tias tsis muaj pawg roj hmab lossis cov khoom siv roj hmab tsawg dhau, ntawm ib sab, cov khoom sib xyaw tsuas yog rub rau hauv cov roj hmab los ntawm lub zog shearing ntawm lub nraub qaum thiab cov roj hmab, uas yuav tsis muaj peev xwm. nkag mus rau hauv cov roj hmab thiab cuam tshuam cov nyhuv dispersion; Ntawm qhov tod tes, cov hmoov sib xyaw uas tsis rub rau hauv cov roj hmab yuav tsum tau nyem los ntawm cov menyuam rov qab kom poob rau hauv lub phaj txais, thiab yog tias nws yog cov kua sib xyaw ua ke, nws yuav lo rau cov menyuam tom qab lossis poob rau hauv lub phaj txais, uas yuav ua rau sib tov nyuaj.
Yog tias pawg roj hmab ntau dhau lawm, ib feem ntawm cov roj hmab yuav tig thiab dov nyob rau hauv lub Upper kawg ntawm cov menyuam seam, thiab tsis tuaj yeem nkag mus rau hauv cov menyuam cov seam, yog li ntawd cov compound tsis yooj yim rau kev sib xyaw ua ke ntawm cov khoom siv roj hmab yog feem ntau siv los txiav txim lub kaum sab xis (los yog tom lub kaum sab xis), lub kaum sab xis yog feem ntau 32-45.
3, tig
Qhov thib peb theem ntawm kev sib tov rau refining. Vim yog cov viscosity loj ntawm cov roj hmab, sib tov roj hmab tsuas yog raws li cov kev taw qhia ntawm kev sib hloov ntawm cov roj hmab sib tov zeb rolls los tsim circumferential txaus, thiab tsis muaj axial txaus, thiab raws lub circumferential ntws ntawm roj hmab kuj laminar flow, yog li hais txog 1/3 ntawm lub thickness ntawm zaj duab xis nyob ze rau ntawm qhov chaw ntawm lub qub menyuam Jane tsis tuaj yeem tsim cov dej ntws thiab dhau los ua "tuag txheej" lossis "stagnant txheej.
Tsis tas li ntawd, cov khoom sib xyaw ntawm cov roj hmab nyob rau sab saud ntawm cov yob seam kuj ua ib feem ntawm cov npoo zoo li "reflux area". Tag nrho cov saum toj no yog vim li cas ua rau dispersing ntawm lub compound nyob rau hauv cov roj hmab tsis sib xws.
Yog li ntawd, nws yuav tsum tau tig ntau zaus, txiav riam, yob los yog daim duab peb sab pob, nyias los ntawm, thiab lwm yam, thiaj li yuav rhuav tshem cov txheej txheem tuag thiab reflux cheeb tsam, thiaj li hais tias qhov sib tov yog uniform, kom ntseeg tau tias cov kev ntxhib los mos yog uniform. .
