Pom Txhaj Moulding

POM txhaj tshuaj molding yog cov txheej txheem ua tau zoo rau kev tsim cov khoom yas ruaj khov thiab meej.Cov txheej txheem no ua lub luag haujlwm tseem ceeb hauv ntau qhov kev lag luam, los ntawm tsheb thiab cov khoom siv kho mob mus rau cov neeg siv khoom thiab cov tshuab ua haujlwm. Nrog nws lub peev xwm los xa cov txiaj ntsig zoo hauv kev xav tau ib puag ncig, POM txhaj tshuaj molding tau dhau los ua ib txoj hauv kev tseem ceeb rau kev tsim cov khoom uas yuav tsum tau rigidity, ntev 2.} thiab durability.

Polyoxymethylene (POM), tseem hu ua acetal, polyacetal, thiab polyformaldehyde, yog ib txwm dawb ib nrab -crystalline engineering thermoplastic uas suav nrog homopolymer thiab copolymer versions ntawm acetal.Homopolymer acetal muaj cov qauv crystalline heev kom muaj zog ntxiv, tab sis tuaj yeem nyuaj rau kev ua tiav vim nws qhov prec. Copolymer acetal muaj ntau yam kev ua haujlwm kub, tab sis yog mechanically tsis muaj zog vim nws tsuas muaj thaj tsam ntawm crystallinity.

1.Polyoxymethylene muaj cov coefficient tsawg heev ntawm kev sib txhuam.
2.Nws kuj muaj qhov zoo heev geometrical thiab dimensional stability.
3.Nws muaj kev cuam tshuam resistant thiab kuj muaj siab heev -kub tsis kam.
4.POM yog cov khoom siv tawv thiab elastic.
5.Nws muaj kev nkag siab zoo txawm tias qhov kub thiab txias.
6.Yog hais tias lub crystallization℃siab dua, nws tuaj yeem ua rau shrinkage ntau dua.

POM txhaj tshuaj molding yog txheej txheem ntawm kev tsim cov khoom yas los ntawm kev txhaj tshuaj POM rau hauv pwm ntawm lub tshuab txhaj tshuaj molding. Cov txheej txheem txhaj tshuaj molding rau POM zoo ib yam li lwm cov yas, nrog rau cov txheej txheem tshwj xeeb thiab qhov kub thiab txias kom haum rau cov khoom siv no. Cov txheej txheem no tsim cov khoom yas nyuaj nrog kev ua haujlwm siab, feem ntau siv rau hauv ntau lawm.

1.Kev npaj khoom: POM yas yog qhuav ua ntej muab tso rau hauv lub tshuab kom tsis txhob ya raws -txog teeb meem thaum lub sij hawm melting. POM qhuav ntawm 80℃rau li 2-4 teev. Tom qab ntawd, nws yog melted nyob rau hauv lub tshuab chamber.
2.Kev txhaj tshuaj rau hauv pwm: Lub molten POM ntawm qhov kub ntawm 175℃yog txhaj rau hauv pwm nyob rau hauv siab siab, feem ntau yog li ntawm 800 mus rau 1200 bar, sau tag nrho cov kab noj hniav.
3.Cooling: Tom qab POM tau txhaj rau hauv pwm, cov txheej txheem txias tshwm sim los ua kom cov yas ruaj khov thiab tswj nws cov duab. Kev txias txias yog qhov tseem ceeb vim tias qhov shrinkage ntawm POM yog nyob ib ncig ntawm 2%. Yog li ntawd, precision nyob rau hauv loj tsim yuav tsum tau txiav txim siab.
4.Kev tshem tawm cov khoom: Cov khoom tiav raug tshem tawm ntawm cov pwm manually lossis txiav, thiab yog tias tsim nyog, cov txheej txheem ntxiv xws li txiav lossis nto tiav yuav raug siv.
5.Finishing kev kho mob: Qee zaum, yog tias cov pwm txhaj tshuaj tsis tau ua tiav lossis muaj qhov yuam kev me me tshwm sim thaum lub sij hawm molding, cov khoom yuav tseem muaj qee qhov tsis xws luag uas xav tau trimming rau kev zoo nkauj. Txawm li cas los xij, qhov zoo thiab qhov tseeb ntawm POM feem ntau txo qhov xav tau rau qhov kev ua tiav no.

Fatigue Resistance
POM muaj kev qaug zog zoo heev thiab tuaj yeem siv rau hauv cov ntawv thov uas muaj ntau lub sijhawm thauj khoom / tshem tawm, xws li lub zog. Homopolymer POM muaj zog qaug zog ntau dua li copolymer POM.

Creep Resistance
Txhaj tshuaj molded POM muaj kev tiv thaiv zoo rau kev nkag mus, qhov nyiam ntawm cov khoom siv los ua kom qeeb deformation thaum raug rau cov neeg kho tshuab tsis tu ncua. POM tseem tuaj yeem raug ncua ntev - lub sijhawm thauj khoom nrog tsawg kawg deformation.

Siab zog
POM plastics muaj cov cuab yeej zoo heev rau kev nruj, lub zog tensile, thiab lub zog flexural - tab sis homopolymer acetals muaj cov khoom siv kho tshuab zoo dua. Cov ntawv thov rau siab - lub zog POM suav nrog cov siv conveyor thiab kev txwv kev nyab xeeb.

Kev sib txhuam qis
POM muaj lubricity zoo heev vim nws tsis tshua muaj coefficient ntawm kev sib txhuam, yog li no engineering thermoplastic yog qhov zoo tagnrho rau cov ntawv thov uas muaj qhov cuam tshuam rau kev sib txhuam. Txhaj tshuaj molded POM kuj tseem muaj kev tiv thaiv zoo rau hnav, aka lub peev xwm ntawm cov khoom siv los tiv thaiv qhov poob ntawm qhov ntim ntim vim yog cov khoom siv kho tshuab (xws li rov rub dua).

Food Safe
Kev txhaj tshuaj molded POM cov khoom tuaj yeem ua los ntawm cov qib uas tau ntsuas raws li cov khoom noj muaj kev nyab xeeb raws li FDA, USDA, NSF, Canada AG, lossis 3-A Cov khoom siv mis nyuj. Cov ntawv thov suav nrog kev txhaj tshuaj molded yas qhov chaw rau khoom noj khoom haus.

Dimensional Stability
Txawm hais tias POM muaj qhov qis qis qis thaum lub sijhawm txhaj tshuaj molding, cov yas no muab kev ruaj ntseg zoo heev thaum qhov chaw txias. Qhov no tso cai rau kev txhaj tshuaj molded POM khaws nws daim ntawv thiab tuav nws cov kev kam rau hauv kev thov.

Corrosion Resistance
Vim tias POM yas tiv taus cov roj thiab cov kuab tshuaj feem ntau, nws feem ntau siv los pwm cov roj tso tsheb hlau luam thiab cov chaw khaws tshuaj. POM tuaj yeem raug puas los ntawm phenols, txawm li cas los xij, thiab nws tsis tiv taus cov kua qaub thiab cov hauv paus.

Thaum tshav kub kub Resistance
Txhaj tshuaj molded POM tuaj yeem tiv taus qhov kev pabcuam txuas ntxiv mus txog 105 degree. Homopolymer POM muaj qhov ua kom sov sai dua thiab cov copolymer POM muaj qhov zoo dua ntev - lub sij hawm thermal kuj. POM yas yog nplaim taws, txawm li cas los xij, thiab nws yuav tsis ua rau nws tus kheej - tua thaum nws ignited.

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