Raws li kev siv, nws feem ntau muab faib ua ob pawg: industrial thiab civil.
Cov khoom siv roj hmab muaj xws li: log tsheb, daim kab xev, hose, phaj, daim kab xev thiab cov khoom siv, cov ntsaws ruaj ruaj, damping qhov chaw, cov khoom siv roj hmab, cov khoom siv roj hmab tawv, cov khoom siv roj hmab, cov cots thiab cov roj hmab hauv ob sab phlu.
Nyob rau hauv cov txheej txheem ntawm cov khoom siv roj hmab, kev siv calender lossis xovxwm tshuab ua ntej ntawm ntau yam duab, ntau qhov sib txawv ntawm cov txheej txheem, hu ua molding.
Cov txheej txheem molding yog:
1. Calendering molding
Haum rau kev ua cov ntawv yooj yim thiab cov khoom siv phaj.Nws yog cov kua nplaum sib xyaw los ntawm calender nias rau hauv ib qho duab, qee qhov loj ntawm zaj duab xis txoj kev hu ua calendering molding.Qee cov khoom siv roj hmab (xws li log tsheb, daim kab xev, hose, thiab lwm yam) siv hauv Cov ntaub ntawv fiber ntau, yuav tsum tau coated nrog ib txheej ntawm cov kua nplaum nyias (cov kua nplaum ntawm cov fiber ntau kuj hu ua kua nplaum los yog kua nplaum), cov txheej txheem txheej txheej txheej feem ntau ua tiav ntawm lub calender.Fiber cov ntaub ntawv yuav tsum tau qhuav thiab dipped ua ntej calendering, lub hom phiaj ntawm ziab yog txo cov dej cov ntsiab lus ntawm cov ntaub ntawv fiber ntau (kom tsis txhob muaj dej evaporation foaming) thiab txhim kho qhov kub thiab txias ntawm cov ntaub ntawv fiber ntau, thiaj li ua kom cov txheej txheem calendering zoo.Dip kua nplaum yog qhov tsim nyog ua haujlwm ua ntej dai kua nplaum, kev txiav txim, lub hom phiaj yog txhawm rau txhim kho cov khoom siv liab thiab cov kua nplaum ua haujlwm.
2. Nias molding
Siv rau cov khoom siv roj hmab ntau dua, xws li cov log tsheb tread, roj hmab hose, hlau hlau nto txheej yuav tsum tau ua los ntawm kev nias molding txoj kev. ntsia hlau, los ntawm ntau lub qhov ncauj (tseem hu ua template) rau cov qauv nruam, ib txoj hauv kev ua ntej xa khoom, roj hmab yuav tsum tau preheated, ua rau cov roj hmab mos, yooj yim rau nyem, kom tau ib tug du nto, loj npaum li cas cov khoom roj hmab.
3. Moulding
Koj tseem tuaj yeem siv txoj kev molding los tsim qee cov duab nyuaj (xws li tawv tais, sealing) cov khoom siv roj hmab, nrog kev pab los ntawm Yin thiab Yang pwm molding, cov khoom siv roj hmab tso rau hauv cov pwm cua sov molding.