Lub hauv paus ntsiab lus ntawm kev txhaj tshuaj molding ntawm cemented carbide pwm Muaj cov kab noj hniav hauv pwm, uas txuas nrog rau qhov kaw qhov txhaj tshuaj pwm kab noj hniav los ntawm cov pwm hauv pwm. Thaum ua haujlwm, koj yuav tsum xub ntxiv cov khoom molding rau hauv cov kab noj hniav thiab ua kom sov kom nws hloov mus rau hauv lub xeev khov. Tom qab ntawd siv lub plunger tshwj xeeb los nias cov yas yaj hauv cov kab noj hniav hauv cov xovxwm, kom cov yaj dhau los ntawm cov pwm. Lub pouring system nkag mus rau hauv lub kaw pwm kab noj hniav thiab ua ntws filling. Thaum cov yaj sau cov pwm kab noj hniav, thiab tom qab tsim nyog tuav thiab solidification, pwm tuaj yeem qhib kom tshem tawm cov khoom. Tam sim no, kev txhaj tshuaj molding feem ntau yog siv rau cov khoom siv yas thermoset.
Piv nrog rau compression molding, cemented carbide pwm txhaj tshuaj molding muaj cov yas yas ua ntej nkag mus rau hauv cov kab noj hniav, yog li lub voj voog molding yog luv, ntau lawm efficiency siab, yas qhov chaw muaj qhov siab qhov tseeb, zoo nto zoo, thiab tsis muaj flash. nyias nyias; tuaj yeem ua cov khoom yas nrog cov ntxig me me, qhov sib sib zog nqus sab qhov thiab ntau qhov yas nyuaj; siv ntau cov khoom raw; lub shrinkage tus nqi ntawm kev txhaj tshuaj molding yog ntau tshaj qhov shrinkage tus nqi ntawm compression molding, uas yuav cuam tshuam qhov tseeb ntawm cov yas qhov chaw, tab sis rau hmoov yas qhov chaw uas muaj cov duab fillers muaj me ntsis cuam tshuam; Cov qauv ntawm cov cemented carbide txhaj pwm yog qhov nyuaj dua li cov pwm compression, lub siab molding siab dua, thiab kev ua haujlwm molding nyuaj dua. Kev txhaj tshuaj molding tsuas yog siv thaum compression molding tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua. Txhaj tshuaj molding yog tsim rau molding ntawm thermosetting yas qhov chaw nrog complex duab thiab ntau inserts.
Cov txheej txheem tseem ceeb ntawm cemented carbide pwm txhaj tshuaj molding muaj xws li molding siab, molding kub thiab molding voj voog, thiab lwm yam. Lawv tag nrho cov muaj feem xyuam rau yam xws li yas hom, pwm qauv, thiab cov khoom tej yam kev mob.
(1) Moulding siab yog hais txog lub siab exerted los ntawm cov xovxwm ntawm lub yaj nyob rau hauv lub feeding chamber los ntawm lub siab kem los yog plunger. Txij li thaum muaj kev poob siab thaum lub yaj dhau los ntawm lub qhov rooj, lub molding siab thaum lub sij hawm txhaj tshuaj yog feem ntau 2 mus rau 3 zaug thaum lub sij hawm compression molding. Lub siab molding ntawm phenolic yas hmoov thiab amino yas hmoov feem ntau yog 50 ~ 80MPa, thiab siab dua tuaj yeem ncav cuag 100 ~ 200MPa; cov yas nrog fiber ntau yog 80 ~ 160MPa; Cov yas ntim uas tsis tshua muaj siab xws li epoxy resin thiab silicone yog 2 ~ 10MPa.
(2) Kev tsim kub ntawm cov cemented carbide pwm suav nrog qhov ntsuas kub ntawm cov khoom hauv chav noj mov thiab qhov kub ntawm pwm nws tus kheej. Txhawm rau kom ntseeg tau tias cov khoom muaj fluidity zoo, cov khoom siv kub yuav tsum tsim nyog qis dua qhov sib txuas ntawm qhov kub ntawm 10 ~ 20 ° C. Txij li cov yas tuaj yeem tau txais ib feem ntawm kev sib txhuam thaum nws dhau los ntawm cov txheej txheem pouring, qhov kub ntawm lub chamber pub thiab pwm tuaj yeem qis dua. Cov pwm kub ntawm kev txhaj tshuaj molding feem ntau yog 15 ~ 30 ℃ qis dua li ntawm compression molding, feem ntau 130 ~ 190 ℃.
(3) Lub voj voog txhaj tshuaj molding ntawm cemented carbide pwm suav nrog lub sijhawm pub mis, lub sijhawm pwm puv, kev sib txuas thiab sijhawm kho, lub sijhawm demoulding lub sijhawm tshem tawm cov yas, thiab lub sijhawm pwm tshem tawm. Lub sij hawm ntim ntawm kev txhaj tshuaj molding feem ntau yog 5 mus rau 50 vib nas this, thaum lub sijhawm kho yog nyob ntawm hom yas, qhov loj, zoo li, phab ntsa thickness, preheating tej yam kev mob thiab pwm qauv ntawm cov yas, thiab feem ntau yog 30 mus rau 180 vib nas this. Txhaj tshuaj molding yuav tsum tau cov yas kom muaj fluidity ntau dua ua ntej ncav lub hardening kub, thiab tom qab ncav lub hardening kub, nws yuav tsum muaj ib tug ceev hardening ceev. Cov khoom siv feem ntau siv rau kev txhaj tshuaj molding muaj xws li: phenolic plastics, melamine, epoxy resin thiab lwm yam yas.
Lub sij hawm xa tuaj: Sep-18-2024
