DIY kua pwm yog hom tshiab silicone pwm, ntau hom tsiaj, paj, txiv hmab txiv ntoo thiab khoom siv tes ua, thiab lwm yam, txhua tus tuaj yeem ua tau, ua txhua yam zoo heev, DIY kua pwm yog cov khoom tseem ceeb yog kua silicone.
Cov kua silicone yog cov tsis muaj tshuaj lom, kub-resistant, zoo heev rov qab tau yooj yim thermosetting pob tshab khoom ntawm cov organic silicone, nws tus cwj pwm sulfuric feem ntau tshwm sim nyob rau hauv tsawg viscosity, sai curing, shear thinning thiab ntau dua coefficient ntawm thermal expansion.Ob lub ntsiab lus siab pob tshab, siab zog, siab kua muag kuj ua kua silicone roj hmab haum rau kev txhaj tshuaj molding txheej txheem.
Liquid silicone roj hmab muaj xws li kua silicone roj hmab, 0 degree kua silicone roj hmab, xoom degree kua silicone roj hmab, 5 degree kua silicone roj hmab, 10 degree kua silicone roj hmab, 15 degree kua silicone roj hmab, 20 degree kua silicone roj hmab, 25 degree kua silicone roj hmab, 30 degree kua silicone roj hmab, 40 degree kua silicone roj hmab, 50 degree kua silicone roj hmab, 60 degree kua silicone roj hmab, 80 degree kua silicone roj hmab, uas yog ntau yam hardnesses ntawm cov kua silicone roj hmab nyob rau hauv lub lag luam silicone roj hmab.Thaum peb tsim DIY kua pwm, peb tuaj yeem xaiv qhov sib txawv ntawm cov kua roj hmab sib txawv raws li peb xav tau ntawm kev tsim pwm.
Cov txheej txheem ntau lawm ntawm DIY kua moulds:
Tsim cov khoom siv DIY
Kos 3D prototypes
Kev lees paubprototypes
Cov duab kos duab
Cov qauv tso zis
Ntau lawm
Feem ntau muaj teeb meem tshwm sim thaum tsim cov kua silicone pwm, yog li dab tsi yog qee qhov teeb meem uas peb yuav tsum paub txog?Feem ntau, cov qauv ntawm cov kua silicone pwm zoo ib yam li cov thermoplastics, tab sis muaj ntau qhov sib txawv tseem ceeb.Lub viscosity ntawm cov kua silicone feem ntau qis dua, yog li lub sij hawm txhaws yog luv dua, txawm tias muaj kev txhaj tshuaj tsawg heev.Txhawm rau kom tsis txhob muaj cua ntxiab, lub tshuab ua pa zoo yuav tsum muaj nyob hauv pwm.
Tsis tas li ntawd, cov kua silicones tsis ntsws hauv pwm li cov khoom siv thermoplastic ua.Lawv zoo li yuav dhau los ua thermal expansion thiab tsis ntsws me ntsis raws li qhov xav tau kom lawv cov khoom tsis nyob twj ywm rau ntawm sab convex ntawm pwm raws li xav tau.Nws tau daig hauv qhov loj dua qhov chaw ntawm lub pwm kab noj hniav.
Kev ceev faj rau kev tsim cov kua silicone pwm.
1. Lub shrinkage
Txawm hais tias cov kua silica tsis ntsws hauv cov pwm, nws feem ntau yuav ntsws tom qab demolding thiab txias los ntawm 2.5 mus rau 3. Qhov tseeb degree ntawm shrinkage nyob ntawm qee qhov ntawm cov formulation ntawm cov compound.Txawm li cas los xij, los ntawm kev pom pwm, qhov shrinkage tuaj yeem cuam tshuam los ntawm ntau yam, nrog rau cov pwm kub, qhov kub ntawm qhov sib xyaw demolded, lub siab nyob rau hauv kab noj hniav, thiab tom qab compression.
Qhov chaw ntawm qhov chaw txhaj tshuaj kuj tseem tsim nyog xav txog, vim tias qhov shrinkage nyob rau hauv cov kev taw qhia ntawm cov dej ntws yog feem ntau ntau dua shrinkage nyob rau hauv cov kev taw qhia perpendicular mus rau lub compound.Cov duab ntawm cov khoom loj kuj muaj qhov cuam tshuam rau nws cov shrinkage, nrog cov khoom thicker feem ntau shrinking tsawg.
2. Txoj kab sib faib
Thawj kauj ruam hauv kev tsim cov silicone roj hmab txhaj pwm yog los txiav txim qhov chaw ntawm txoj kab sib cais.Venting yog tsuas yog ua tiav los ntawm ib tug zawj nyob rau hauv ib tug parting kab, uas yuav tsum tau nyob rau hauv lub cheeb tsam uas cov roj hmab txhaj yuav nws thiaj li mus txog, yog li zam qhov tsim ntawm huab cua npuas thiab txo qhov poob ntawm lub zog nyob rau hauv lub sib koom ua ke.
Vim tias cov viscosity tsawg ntawm cov kua silicone, cov kab sib faib yuav tsum yog qhov tseeb kom tsis txhob nchuav.Txawm li cas los xij, cov kab sib faib feem ntau tuaj yeem pom ntawm cov khoom kawg.Cov kua silicone pwm yog cuam tshuam los ntawm cov duab geometry ntawm cov khoom thiab qhov chaw ntawm cov kab sib faib.Ib qho me ntsis chamfered khoom tsim pab xyuas kom meej tias cov khoom muaj ib tug zoo sib xws affinity mus rau lwm yam ib nrab ntawm cov kab noj hniav.
Post lub sij hawm: Feb-24-2023