Yuav ua li cas nrum polyurethane cov menyuam rollers tsim?
Kev tsim khoom ntawm cam khwb cia polyurethane cov menyuam yaus cuam tshuam nrog ntau cov kauj ruam, suav nrog npaj ua ntej npaj, kev kho, kho kom zoo nkauj. Txhua theem ua si lub luag haujlwm tseem ceeb hauv kev ua kom muaj kev ua tau zoo thiab ruaj khov ntawm cov khoom kawg.
1. Npaj Npaj Ua Piv Txwv
Polyester lub cev qhuav dej: lub cev hnyav ntawm 2000 (Hydroxyl tus nqi 53-59 Mgting point 40-50 degree) yog rhuab thiab melted nyob rau hauv lub stainless hlau lossis enamel reactor. Lub cev qhuav dej yuav tsum tshwm sim ntawm 100-140 raws nyob rau hauv 5 mmHg nqus tsev rau 30-60 feeb kom txog thaum noo noo nyob hauv qab 0.05 feem pua.
Prepolymer synthesis: kev xaiv ntawm cov khoom siv raw, cov lus sib piv, thiab cov xwm txheej ncaj qha cuam tshuam rau cov khoom lag luam. Cov ntaub ntawv yuav tsum raug xaiv raws li qhov ntsuas kub, kev ntxhov siab, kev sib cuag, thiab kev pabcuam lub neej. Cov sib tov yuav tsum muaj cov khoom siv nitrogen kom tiv thaiv kev tsis txaus siab thiab tswj hwm ntawm 80-2 teev kom sib npaug yog cov ntsiab lus oocyanate cov ntsiab lus.
Npaj ua ntej: DEGA ntawm 85 ± 5℃thiab 5 hli rau 30-60 feeb kom tshem tawm cov pa npuas.
2. Cov txheej txheem ua pov tseg
Cov khoom siv casting: Lub tshuab casting yog qhov tseem ceeb rau cov cam khwb cia polyurethane ntau lawm. Nws yuav tsum xyuas kom meej cov kev sib xyaw yog qhov tseeb tau, cov khoom siv tsis sib xws thiab ua npuas - kev sib xyaw dawb.
Cov txheej txheem casting: A thiab B thiab B feem yog preheated hauv cov thawv tso tsheb hlau. Thaum lawv mus txog lub hom phiaj kub, lawv sib xyaw ntawm kev kub ceev thiab hliv rau hauv preheated, pretreated pwm.
3. Kho thiab tshaj tawm - kev kho
Mould Cais: Cov menyuam tau kho hauv cov pwm ntawm 100-120℃rau 60-120 feeb.
Tshaj tawm {{0} Kev kho: Tom qab kev kho hniav: Tom qab kev rhuav tshem, cov menyuam yaus los kho ntawm 90-10 teev rau txhim kho cov khoom kawg.
Surface Processing: The roller surface may be machined or polished based on end-use requirements.
4. Cov kev txiav txim siab tseem ceeb
Pwm Tsim Tsim: cov pwm yuav tsum yog cov suab nrov thiab muab khi kom tiv thaiv kom tiv thaiv kom tsis txhob muaj dej.
Qhov kub thiab txias: pwm, tub ntxhais, thiab cov khoom kub yuav tsum tau sib npaug kom tsis txhob muaj qhov tsis txaus ntseeg.
Adhesion Huv Si: Cov kev sib raug zoo saum npoo ntawm cov tub ntxhais yuav tsum tsis txhob ua paug los ntawm pwm.
Kev kho lub zog: cov menyuam yuav tsum tsis txhob txav mus kom txog thaum kho kom tsis txhob tawg.
5. Pwm thiab cov tshuab cua kub
Cov pwm thiab cov tshuab cua kub tseem ceeb yuav tsum muaj kev kub ntxhov ntawm 90 ± 10 degree. Qhov no tuaj yeem ua tiav siv cov hluav taws xob siv hluav taws xob hluav taws xob nrog cov yam ntxwv kub.