Peb txhua tus paub tias cov khoom yas feem ntau muaj qhov shrinkage tus nqi, thiab nws shrinks thaum nws qis dua.Cov khoom tsim los ntawm cov khoom sib txawv muaj qhov sib txawv shrinkage tus nqi.Ntawm no, peb tham txog ntau yam uas cuam tshuam rau lub shrinkage ntawm yas turnover bins thaum lub sij hawm ntau lawm.Qhov tseeb, hauv kev tsim khoom, yog tias koj xav kom cov khoom loj dua kom tsim nyog, nws yuav pab tau kom nkag siab txog yam cuam tshuam rau qhov contraction.Tom qab tag nrho, nyob rau hauv kev lag luam logistics kev lag luam, yas turnover ntim yog feem ntau standardized standardized ntim.Nws qhov loj me thiab cov lus qhia tshwj xeeb yog qhov tseeb raws li tus qauv, thiab tsis muaj qhov sib txawv.Txwv tsis pub, nws tsis tuaj yeem hais tias qhov kev nthuav dav yog tus qauv.
Cov txheej txheem molding ntawm lubyas turnover boxyog cov thermoplastic molding.Vim lub ntim hloov thaum lub sij hawm ntau lawm txheej txheem nyob rau hauv crystallization txheej txheem, lub internal kev nyuaj siab kuj loj, thiab muaj ib tug residual kev nyuaj siab nyob rau hauv cov pwm cov khoom, thiab lub molecular orientation muaj zog heev.Yog li ntawd, nws muaj qhov shrinkage ntau dua li cov khoom siv thermosetting plastics.Nws muaj ib tug loj contraction ntau thiab ib tug heev pronounced directionality.Txij li thaum txheej txheej txheej ntawm cov khoom molten yog nyob rau hauv kev sib cuag nrog pwm kab noj hniav nto thaum lub sij hawm molded yas tivthaiv, nws yog tam sim ntawd txias cia rau hauv ib tug tsawg-density khoom plhaub.Thiab peb txhua tus paub tias cov thermal conductivity ntawm yas yog txom nyem heev, ua ib txheej yas-ceev cov txheej txheej nrog ib tug loj shrinkage tus nqi.Yog tias cov phab ntsa thickness qeeb, cov txheej txheem siab yuav thicken thiab yuav shrink ntau dua.
Cov txheej txheem molding ntawm lubyas turnover boxyog cov thermoplastic molding.Vim lub ntim hloov thaum lub sij hawm ntau lawm txheej txheem nyob rau hauv crystallization txheej txheem, lub internal kev nyuaj siab kuj loj, thiab muaj ib tug residual kev nyuaj siab nyob rau hauv cov pwm cov khoom, thiab lub molecular orientation muaj zog heev.Yog li ntawd, nws muaj qhov shrinkage ntau dua li cov khoom siv thermosetting plastics.Nws muaj ib tug loj contraction ntau thiab ib tug heev pronounced directionality.Txij li thaum txheej txheej txheej ntawm cov khoom molten yog nyob rau hauv kev sib cuag nrog pwm kab noj hniav nto thaum lub sij hawm molded yas tivthaiv, nws yog tam sim ntawd txias cia rau hauv ib tug tsawg-density khoom plhaub.Thiab peb txhua tus paub tias cov thermal conductivity ntawm yas yog txom nyem heev, ua ib txheej yas-ceev cov txheej txheej nrog ib tug loj shrinkage tus nqi.Yog tias cov phab ntsa thickness qeeb, cov txheej txheem siab yuav thicken thiab yuav shrink ntau dua.
Kev Pub Noj Daim Ntawv Hlau Cov Khoom Siv Cov Khoom Siv Khoom Siv Hauv Cov Khoom Siv Khoom Siv Ib Zaug Ntxiv, Cov Khoom Siv Hluav Taws Xob Ua Rau Cov Khoom Siv Hluav Taws Xobyas turnover box.Thaum cov cuab yeej muaj qhov nkag ncaj qha, qhov inlet cross section yog qhov loj heev, tshwj xeeb tshaj yog thaum nws tuab, qhov shrinkage tus nqi yuav me dua tab sis ntau dua kev taw qhia.Nyob rau hauv sib piv, thaum lub inlet loj me me, lub contraction kev taw qhia yog me me, thiab lub shrinkage tus nqi kuj loj heev thaum lub inlet nyob ze rau lub inlet los yog parallel mus rau lub ntws kev taw qhia.
Cov txheej txheem molding ntau lawm muaj kev cuam tshuam zoo rau tus nqi shrinkage ntawmyas turnover box.Piv txwv li, yog hais tias pwm kub yog siab thiab cov khoom molten ols maj mam, muaj ib tug siab ceev thiab shrinkage tus nqi yuav kuj loj.Cov khoom siv crystalline muaj crystallinity siab thiab ntim loj, yog li tus nqi shrinkage yuav loj dua.Cov pwm kub faib thiab cov cua txias sab hauv thiab sab nraud thiab qhov ntom ntom ntom ntom ntawm cov khoom yas yuav cuam tshuam ncaj qha rau tus nqi shrinkage thiab directionality ntawm txhua qhov ntawm cov khoom.Qhov loj ntawm qhov tuav tuav thiab qhov ntev ntawm lub sij hawm tuav kuj muaj qhov cuam tshuam zoo rau qhov kev cog lus.Thaum lub siab yog siab thiab ntev, qhov contraction tus nqi me me, tab sis cov kev taw qhia ntau dua.Thaum lub sij hawm molding txheej txheem, lub shrinkage tus nqi ntawm cov yas turnover lub thawv yuav tsim nyog hloov los ntawm kev kho cov pwm kub thiab siab txhaj tshuaj ceev thiab lub sij hawm txias.Raws li cov saum toj no, peb tuaj yeem txiav txim siab qhov shrinkage tus nqi ntawm txhua feem ntawm cov khoom raws li cov yas turnover lub thawv shrinkage phab ntsa thickness zoo pub inlet zoo thiab loj thiab faib cov pwm tsim, thiab ces xam cov kab noj hniav.Raws li qhov tseeb shrinkage tus nqi ntawm cov khoom, hloov cov pwm thiab hloov cov kev txhaj tshuaj molding tej yam kev mob los kho cov khoom shrinkage tus nqi kom tau raws li qhov yuav tsum tau.
Post lub sij hawm: Nov-25-2022