PVC lub tshuab nqus tsev- tsim cov yeeb yaj kiab muaj cov dej tsis zoo thiab kev tiv thaiv corrosion, ua kom ntseeg tau tias siv tau. Uas feem ntau ntawm polyvinyl chloride, feem ntau yog tsim rau lub teeb yuag, me me - cov khoom lag luam xws li cov khoom noj, tshuaj, khoom siv hluav taws xob, khoom siv niaj hnub, tshuaj pleev ib ce, thiab cov khoom ua si.
Cov txheej txheem rau kev thov PVC lub tshuab nqus tsev- ua zaj duab xis yog raws li nram no:
Ua ntej, tom qab thawj zaug fabrication thiab sanding, ib tug tshwj xeeb nplaum rau PVC yog sprayed rau saum npoo. Thaum qhuav, lub tshuab nqus tsev- pib txheej txheem. Nyob ntawm cov cuab yeej siv tshwj xeeb, qhov rooj vaj huam sib luag yuav tsum tau nce siab ntawm ib centimeter; Feem ntau, lub tshuab ntsuas kub yog teem rau kwv yees li 160 degree, nrog lub sij hawm ua ntej ntawm 20 vib nas this thiab lub tshuab nqus tsev - ua lub voj voog ntawm 50 vib nas this. Tom qab cov txheej txheem, qhov kub thiab txias yog me ntsis qis, qhov saum npoo PVC zaj duab xis raug tshem tawm, thiab cov nplaum yog txau mus rau sab nraub qaum ntawm lub qhov rooj rau lub tshuab nqus tsev thib ob - ua dhau. Kev saib xyuas tshwj xeeb yog ua kom cov nplaum nplaum sib npaug ib ncig ntawm cov npoo, kom ntseeg tau tias cov yeeb yaj kiab sib tshooj ntawm ib puag ncig- ua kom cov npoo tau zoo rau lub tshuab nqus tsev ob- kev kho mob.
Yog tias, tom qab lub tshuab nqus tsev tsim, cov yeeb yaj kiab tsis tau ua tib zoo nyob rau hauv qee qhov chaw raws cov npoo - lossis yog tias qhov kev tshem tawm cov yeeb yaj kiab tsis raug ua rau cov txheej txheem hloov pauv kom sib cais - nplaum tuaj yeem siv rau qhov chaw cuam tshuam los khi ib thaj me me ntawm zaj duab xis. Qhov no yog ua raws li daim ntawv thov ntawm PU lacquer. Thaum qhuav, lub hauv paus lub tsho tiv no maj mam sanded, thiab ua tiav tiav los ntawm kev kov cov xim los yog txau lub polyurethane topcoat.