Muaj ntau hom pwm rooj vag rau cov khoom siv niaj hnub, tab sis txawm tias siv lub qhov rooj pwm zoo li cas, nws txoj haujlwm qhib muaj qhov cuam tshuam zoo rau kev ua haujlwm molding thiab molding zoo ntawm cov khoom yas.Yog li ntawd, kev xaiv tsim nyog ntawm qhov chaw qhib ntawm lub qhov rooj pwm yog qhov tseem ceeb tsim txuas los txhim kho qhov zoo ntawm cov khoom yas.Thaum xaiv lub rooj vag txoj hauj lwm ntawm cov pwm, cov yam ntxwv geometrical thiab cov kev cai ntawm kev tsim cov yas yuav tsum tau soj ntsuam los soj ntsuam lub xeev ntws, ntim cov xwm txheej thiab tso pa tawm ntawm cov yas molten hauv pwm.Lub rooj vag pwm yuav tsum tau qhib ntawm qhov tuab tshaj plaws ntawm cov yas.Thaum cov phab ntsa tuab ntawm cov yas yog qhov sib txawv heev, yog tias lub rooj vag pwm qhib ntawm cov phab ntsa nyias, qhov no yog vim tias cov yas yaj nkag mus rau hauv cov kab noj hniav, tsis yog tsuas yog cov ndlwg kuj loj, tab sis kuj yog ib qho yooj yim kom txias, cuam tshuam. qhov khiav deb ntawm cov yaj, nws yog ib qho nyuaj Ib qho yooj yim los xyuas kom meej tias tag nrho cov kab noj hniav yog sau.Phab ntsa thickness ntawm cov yas feem ntau yog qhov chaw uas cov yaj solidifies ntawm qhov tseeb.Yog hais tias lub rooj vag qhib ntawm ib phab ntsa nyias, phab ntsa thickness yuav tsim ib tug deg depression los yog shrinkage vim lub shrinkage ntawm cov yas yaj.
Qhov loj thiab txoj hauj lwm ntawm lub qhov rooj pwm yuav tsum raug xaiv kom tsis txhob txau thiab nkag.Yog tias lub rooj vag pwm me me tab tom ntsib cov kab noj hniav uas muaj qhov dav thiab tuab, thaum cov kwj dej nrawm dhau los ntawm lub rooj vag, vim muaj kev nyuaj siab shear siab, nws yuav ua rau tawg tawg phenomena xws li tshuaj tsuag thiab nkag.Qee zaum qhov tshwm sim ntawm kev txau kuj tuaj yeem ua rau corrugated flow marks ntawm cov khoom yas.
Kev xaiv ntawm lub rooj vag txoj hauj lwm ntawm cov pwm yuav tsum ua kom cov yas ntws luv tshaj plaws thiab cov kev taw qhia ntawm cov khoom ntws hloov qhov tsawg tshaj plaws.
Qhov chaw ntawm lub rooj vag pwm yuav tsum tau ua kom muaj qhov tso pa tawm ntawm cov pa hauv cov kab noj hniav.
Cov khoom ntws yuav tsum tau tiv thaiv los ntawm deforming kab noj hniav, core thiab ntxig.
Post lub sij hawm: Aug-18-2021