MDF HDF Nruab Nrab Density Fiberboard Tshuab Ntau Lawm Kab
MDF yog dab tsi?
Medium-density fibreboard (MDF) yog ib yam khoom ntoo uas ua los ntawm kev rhuav cov ntoo tawv lossis cov ntoo mos ua cov fibers ntoo, feem ntau yog siv lub tshuab defibrator, sib xyaw nrog cov quav ciab thiab cov khoom siv resin, thiab tsim cov vaj huam sib luag los ntawm kev siv qhov kub thiab siab. MDF feem ntau yog denser dua li plywood. Nws yog ua los ntawm cov fibers sib cais, tab sis tuaj yeem siv ua cov khoom siv hauv tsev zoo ib yam li plywood. Nws muaj zog dua thiab denser dua li particle board.
Lub npe tau los ntawm qhov sib txawv ntawm cov fibreboard. Kev tsim khoom loj ntawm MDF pib xyoo 1980, hauv North America thiab Europe.
Cov Khoom
Raws li lub sijhawm dhau los, lo lus MDF tau dhau los ua lub npe dav dav rau txhua lub rooj tsavxwm fiber qhuav. MDF feem ntau yog ua los ntawm 82% ntoo fiber, 9% urea-formaldehyde resin kua nplaum, 8% dej thiab 1% paraffin wax thiab qhov ceev feem ntau yog ntawm 500 kg / m3 (31 lb / ft3) thiab 1,000 kg / m3 (62 lb / ft3) Qhov ntau ntawm qhov ceev thiab kev faib tawm raws li lub teeb, tus qauv, lossis siab ceev board yog qhov tsis raug thiab tsis meej pem. Qhov ceev ntawm lub rooj tsavxwm, thaum soj ntsuam hauv kev sib raug zoo rau qhov ceev ntawm cov fiber uas mus rau hauv kev ua lub vaj huam sib luag, yog qhov tseem ceeb. Lub vaj huam sib luag MDF tuab ntawm qhov ceev ntawm 700-720 kg / m3 yuav raug suav hais tias yog qhov ceev siab hauv cov ntaub ntawv ntawm cov ntoo mos fiber panels, thaum lub vaj huam sib luag ntawm tib qhov ceev ua los ntawm cov ntoo tawv fibers tsis suav hais tias yog li ntawd. Kev hloov pauv ntawm ntau hom MDF tau tsav los ntawm kev xav tau sib txawv rau cov ntawv thov tshwj xeeb.
Kev Tsim Khoom
Kev tsim cov chips
Cov ntoo raug tshem cov tawv ntoo tom qab raug txiav. Cov tawv ntoo tuaj yeem muag rau kev siv hauv kev ua vaj, lossis hlawv hauv cov cub tawg hauv qhov chaw. Cov ntoo uas tau tshem cov tawv ntoo raug xa mus rau lub Hoobkas MDF, qhov chaw uas lawv mus dhau cov txheej txheem chipping. Ib qho disk chipper feem ntau muaj 4-16 hniav. Cov chips uas loj dhau tuaj yeem rov chipped; cov chips me me tuaj yeem siv ua roj. Cov chips tom qab ntawd raug ntxuav thiab kuaj xyuas seb puas muaj qhov tsis zoo. Cov chips tuaj yeem khaws cia ua ntau, ua qhov khaws cia rau kev tsim khoom.
Kev tsim cov fiber
Piv rau lwm cov fiber boards, xws li Masonite, MDF yog tus cwj pwm los ntawm qhov tom ntej ntawm cov txheej txheem, thiab yuav ua li cas cov fibers raug ua tiav ua ib tus neeg, tab sis tsis muaj qhov tsis zoo, cov fibers thiab cov hlab ntsha, tsim los ntawm cov txheej txheem qhuav. Cov chips ces raug compacted rau hauv cov plugs me me siv lub hau ntswj feeder, cua sov rau 30-120 vib nas this kom mos cov lignin hauv cov ntoo, tom qab ntawd pub rau hauv lub defibrator. Ib qho defibrator ib txwm muaj ob lub discs tig rov qab nrog cov grooves hauv lawv lub ntsej muag. Cov chips raug pub rau hauv nruab nrab thiab raug pub rau sab nraud ntawm cov discs los ntawm lub zog centrifugal. Qhov loj me ntawm cov grooves maj mam cais cov fibers, pab los ntawm cov lignin mos ntawm lawv.
Los ntawm lub tshuab defibrator, cov pulp nkag mus rau hauv 'blowline', ib feem tshwj xeeb ntawm cov txheej txheem MDF. Qhov no yog ib txoj kab ncig uas nthuav dav, pib 40 hli hauv txoj kab uas hla, nce mus txog 1500 hli. Cov quav ciab raug txhaj rau hauv theem thawj zaug, uas txheej cov fibers thiab faib sib npaug los ntawm kev txav mus los ntawm cov fibers. Tom qab ntawd ib qho urea-formaldehyde resin raug txhaj ua tus neeg sawv cev tseem ceeb. Cov quav ciab txhim kho kev tiv thaiv dej noo thiab cov resin pib pab txo qhov clumping. Cov khoom siv qhuav sai sai hauv chav sov kawg ntawm lub tshuab blowline thiab nthuav dav mus rau hauv cov fiber zoo, fluffy thiab sib dua. Cov fiber no tuaj yeem siv tam sim ntawd, lossis khaws cia.
Kev tsim daim ntawv
Cov fiber qhuav raug nqus mus rau saum 'pendistor', uas faib cov fiber sib npaug rau hauv daim lev sib npaug hauv qab nws, feem ntau yog 230-610 hli tuab. Daim lev raug nias ua ntej thiab xa ncaj qha mus rau qhov nias kub tas mus li lossis txiav ua daim ntawv loj rau kev nias kub ntau qhov qhib. Qhov nias kub ua rau cov roj hmab sib txuas thiab teeb tsa lub zog thiab qhov ceev. Lub voj voog nias ua haujlwm ua ntu zus, nrog rau qhov tuab ntawm daim lev raug nias ua ntej txog li 1.5 × qhov tuab ntawm daim ntawv tiav, tom qab ntawd nias ntxiv ua ntu zus thiab tuav rau lub sijhawm luv luv. Qhov no muab cov qauv ntawm daim ntawv nrog thaj chaw ntawm qhov ceev ntxiv, yog li lub zog kho tshuab, ze ntawm ob sab ntawm daim ntawv thiab lub plawv tsis tuab.
Tom qab nias, MDF raug txias hauv lub tshuab ziab hnub qub lossis lub tshuab cua txias, txiav thiab xuab zeb. Hauv qee daim ntawv thov, cov laug cam kuj tseem raug laminated rau lub zog ntxiv.
Qhov cuam tshuam rau ib puag ncig ntawm MDF tau zoo dua qub ntau xyoo dhau los. Niaj hnub no, ntau lub rooj tsavxwm MDF yog ua los ntawm ntau yam khoom siv. Cov no suav nrog lwm cov ntoo, cov khoom seem, cov ntawv rov ua dua tshiab, xyoob, cov carbon fibers thiab polymers, cov ntoo thinnings thiab cov tshuab txiav ntoo.
Vim tias cov chaw tsim khoom raug yuam kom tsim cov khoom siv uas muaj kev nyab xeeb dua, lawv tau pib sim thiab siv cov khoom siv uas tsis muaj tshuaj lom. Cov khoom siv tshiab tau raug coj los siv. Cov nyom thiab xyoob ntoo tau dhau los ua cov fibers nrov vim tias lawv yog cov khoom siv rov ua dua tshiab uas loj hlob sai.
YAM KHOOM | INDEX |
Cov Khoom Siv Raw | Ntoo thuv, Poplar, Fir |
Hom kua nplaum | MDI, PF, UF |
Xovxwm Kub | Nias Qhib Ntau Qhov, Nias Txuas Ntxiv Mus (4 ft, 8 ft, 12 ft) |
Tsim peev xwm | 50000, 150000, 250000 Cubic Meters |
Yog xav paub ntxiv, thov hu rau JEREMY,
Xov tooj ntawm tes/WhatsApp: 0086-18913639978; Jeremy@cmtk.cn
Xa Kev Nug
Peb cog lus tias yuav muab kev pabcuam zoo tshaj plaws rau koj thiab tos ntsoov yuav sib txuas lus nrog koj los daws teeb meem ua ke thiab coj kev paub zoo dua rau koj.