Lub tsheb bumper yog ib qho ntawm cov khoom siv loj dua hauv lub tsheb.Nws muaj peb lub luag haujlwm tseem ceeb: kev nyab xeeb, kev ua haujlwm thiab kho kom zoo nkauj.
Muaj peb txoj hauv kev tseem ceeb los txo qhov hnyav ntawm cov tsheb hauv tsheb: cov ntaub ntawv sib zog, kev ua kom zoo dua qub, thiab kev tsim cov txheej txheem kev tsim kho tshiab.Lub teeb yuag ntawm cov ntaub ntawv feem ntau yog hais txog kev hloov cov khoom qub nrog cov ntaub ntawv uas muaj qis dua nyob rau hauv qee yam kev mob, xws li cov hlau ua yas;cov txheej txheem optimization tsim ntawm lub teeb yuag bumper yog tsuas yog nyias-walled;cov txheej txheem tsim khoom tshiab muaj micro-foaming.Cov thev naus laus zis tshiab xws li cov khoom siv thiab cov roj-pab molding.
Cov yas yog siv dav hauv kev lag luam tsheb vim lawv lub teeb yuag, kev ua haujlwm zoo, kev tsim khoom yooj yim, kev tiv thaiv corrosion, cuam tshuam tsis kam, thiab kev ywj pheej loj hauv kev tsim, thiab lawv tau siv ntau dua hauv cov khoom siv tsheb.Tus nqi ntawm cov yas siv nyob rau hauv ib lub tsheb tau dhau los ua ib qho ntawm cov txheej txheem rau kev ntsuas theem ntawm kev loj hlob ntawm lub teb chaws kev lag luam tsheb.Tam sim no, cov yas siv hauv kev tsim tsheb hauv lub tebchaws tsim tau mus txog 200kg, suav txog li 20% ntawm tag nrho cov tsheb zoo.
Plastics yog siv nyob rau hauv Tuam Tshoj txoj kev lag luam tsheb kuj lig.Hauv kev lag luam tsheb, tus nqi ntawm cov yas tsuas yog 50 ~ 60kg, rau cov tsheb nruab nrab thiab qib siab, 60 ~ 80kg, thiab qee lub tsheb tuaj yeem ncav cuag 100kg.Thaum tsim cov tsheb thauj khoom nruab nrab hauv Suav teb, txhua lub tsheb siv li 50kg yas.Kev siv cov yas ntawm txhua lub tsheb tsuas yog 5% mus rau 10% ntawm qhov hnyav ntawm lub tsheb.
Cov khoom siv ntawm lub bumper feem ntau muaj cov hauv qab no: kev cuam tshuam zoo thiab huab cua tsis kam.Cov xim zoo adhesion, zoo fluidity, kev ua haujlwm zoo thiab tus nqi qis.
Raws li, PP cov ntaub ntawv yog undoubtedly tus nqi-zoo xaiv.Cov khoom siv PP yog cov khoom siv dav dav nrog kev ua tau zoo, tab sis PP nws tus kheej muaj qhov ua haujlwm tsis zoo ntawm qhov kub thiab qhov cuam tshuam, tsis hnav-tiv taus, yooj yim rau hnub nyoog thiab tsis muaj qhov tsis zoo.Yog li ntawd, hloov PP feem ntau yog siv rau tsheb bumper ntau lawm.khoom.Tam sim no, cov ntaub ntawv tshwj xeeb rau polypropylene tsheb bumpers feem ntau yog ua los ntawm PP, thiab ib feem ntawm roj hmab los yog elastomer, inorganic muab tub lim, masterbatch, auxiliary cov ntaub ntawv thiab lwm yam ntaub ntawv yog tov thiab ua tiav.
Teeb meem tshwm sim los ntawm cov phab ntsa nyias ntawm lub bumper thiab kev daws teeb meem
Lub thinning ntawm lub bumper yog ib qho yooj yim ua rau warping deformation, thiab warping deformation yog tshwm sim los ntawm kev tso tawm ntawm sab hauv kev ntxhov siab.Nyias-walled bumpers tsim kev ntxhov siab sab hauv rau ntau yam laj thawj thaum muaj ntau theem ntawm kev txhaj tshuaj molding.
Feem ntau, nws feem ntau suav nrog kev taw qhia kev ntxhov siab, kev ntxhov siab thermal, thiab pwm tso tawm kev ntxhov siab.Kev ntxhov siab ntawm kev taw qhia yog ib qho kev nyiam sab hauv los ntawm cov fibers, macromolecular chains lossis ntu hauv cov yaj taw qhia nyob rau hauv ib qho kev taw qhia thiab tsis txaus so.Lub degree ntawm kev taw qhia yog muaj feem xyuam rau lub thickness ntawm cov khoom, lub melting kub, pwm kub, txhaj tshuaj, thiab lub sij hawm nyob rau hauv.Qhov loj dua qhov tuab, qhov qis dua qhov kev taw qhia;qhov siab dua qhov melting kub, qhov qis dua qhov kev taw qhia;qhov siab dua pwm kub, qhov qis dua qhov kev taw qhia;qhov siab dua qhov txhaj tshuaj, qhov siab dua qhov kev taw qhia;ntev lub sij hawm nyob, qhov ntau dua qhov kev taw qhia.
Lub thermal kev nyuaj siab yog vim qhov kub ntawm cov yaj thiab cov pwm qis dua los ua qhov sib txawv ntawm qhov kub thiab txias.Cov cua txias ntawm cov yaj nyob ze ntawm cov kab noj hniav ntawm cov pwm yog sai dua thiab cov neeg kho tshuab sab hauv kev ntxhov siab tsis sib xws.
Lub demoulding kev ntxhov siab feem ntau yog tshwm sim los ntawm qhov tsis muaj zog thiab rigidity ntawm pwm, elastic deformation nyob rau hauv qhov kev txiav txim ntawm kev txhaj tshuaj siab thiab lub zog ejection, thiab tsis sib npaug ntawm cov quab yuam thaum cov khoom tawm.
Lub thinning ntawm lub bumper kuj muaj qhov teeb meem ntawm qhov nyuaj ntawm demolding.Vim hais tias cov phab ntsa thickness gauge me me thiab muaj me me ntawm shrinkage, cov khoom adheres nruj nreem rau pwm;vim tias qhov kev txhaj tshuaj nrawm yog qhov siab, lub sijhawm nyob ruaj khov.Kev tswj tsis yooj yim;kuj nyias phab ntsa thicknesses thiab tav kuj raug puas tsuaj thaum demolding.Kev qhib pwm yuav tsum muaj lub tshuab txhaj tshuaj kom muaj pwm qhib lub zog txaus, thiab lub pwm qhib lub zog yuav tsum muaj peev xwm kov yeej qhov kev tawm tsam thaum qhib pwm.
Post lub sij hawm: Apr-23-2023