Ngaba ukhe weva nge-MDF? Abanye abantu abaqinisekanga ukuba yintoni okanye isetyenziswe njani.
I-Medium-density fibreboard (MDF) yimveliso eyenziwe ngenkuni eyenziwe ngobunjineli eyenziwe ngokuqhekeza ii-hardwood okanye iintsalela ze-softwood zibe yimicu yomthi, rhoqo kwi-defibrator, idibanisa ne-wax kunye ne-resin binder, kunye nokwenza iipaneli ngokufaka ubushushu obuphezulu kunye noxinzelelo. I-MDF ngokubanzi ixinene kuneplywood. Yenziwe ngeentsinga ezihlukeneyo, kodwa ingasetyenziselwa njengempahla yokwakha efana nesicelo kwiplywood. Yomelele kwaye ixinene kakhulu kunebhodi yamasuntswana.
Kukho iingcamango ezininzi eziphosakeleyo malunga neebhodi ze-MDF kwaye zihlala zibhidaniswa ne-plywood kunye ne-fibreboards. Ibhodi ye-MDF sisishunqulelo se-medium density fibreboard. Ikakhulu ithathwa ngokuba yindawo yomthi kwaye ithatha ishishini njengento eluncedo kwiimveliso zokuhombisa kunye nefenitshala yasekhaya.
Ukuba awuqhelananga nemithi ye-MDF, siya kukuthatha malunga nokuba yintoni na, iinkxalabo ngokhuni lwe-MDF, Iibhodi ze-MDF zenziwe njani.
Izinto eziphathekayo
I-MDF yenziwa ngokucazulula zombini iinkuni ezilukhuni kunye ne-softwood zibe yimicu yomthi, i-MDF yenziwe nge-82% ye-wood fibers, i-9% yeglue ye-urea-formaldehyde resin, i-8% yamanzi kunye ne-1% yewax yeparafini. kwaye uxinano luqhelekile phakathi kwama-500 kg/m3(31 lb/ft3) kunye ne-1,000 kg / m3(62 lb/ft3). Uluhlu loxinaniso kunye nokuhlelwa njengeukukhanya,umgangatho, okanyephezuluibhodi yoxinaniso ligama elingalunganga kwaye liyabhidisa. Ubuninzi bebhodi, xa kuvavanywa ngokumalunga nobuninzi befiber ehamba ekwenzeni ipaneli, kubalulekile. Iphaneli ye-MDF engqingqwa kubuninzi be-700-720 kg / m3inokuthathwa njengoxinaniso oluphezulu kwimeko yeephaneli zefibre ye-softwood, ngelixa ipaneli yoxinaniso olufanayo olwenziwe ngeentsinga zomthi oqinileyo ayithathwa njengenjalo.
Ukuveliswa kweFayibha
Izinto eziluhlaza ezenza isiqwenga se-MDF kufuneka zidlule kwinkqubo ethile ngaphambi kokuba zifaneleke. Imagnethi enkulu isetyenziselwa ukususa nakuphi na ukungcola kwamagnetic, kwaye izixhobo zohlulwe ngobukhulu. Emva koko ezi zinto ziyacinezelwa ukuze kususwe amanzi zize zifakwe kwisicoci, esiziqhekeza zibe ngamaqhekeza amancinci. I-resin ke yongezwa ukunceda i-fiber bond. Lo mxube ufakwa kwisomisi esikhulu kakhulu esifudunyezwa ngerhasi okanye ngeoli. Le ndibaniselwano yomileyo iqhutywa ngecompressor yegubu enezixhobo zolawulo lwekhompyuter ukuqinisekisa ingxinano kunye namandla afanelekileyo. Iziqwenga eziphumayo zisikwa ngokobungakanani obuchanekileyo ngesarha yeshishini ngelixa zisafudumele.
Iifayibha zicutshungulwa njengomntu ngamnye, kodwa zigqibelele, iintsinga kunye neenqanawa, zenziwe ngenkqubo eyomileyo. I-chips ke idityaniswe kwiiplagi ezincinci usebenzisa i-screw feeder, ifudunyezwe imizuzwana engama-30-120 ukuthambisa i-lignin emthini, emva koko ifakwe kwi-defibrator. I-defibrator eqhelekileyo iquka iidiski ezimbini ezijikelezayo ezinemijelo ebusweni bazo. Iichips zondliwa embindini kwaye zondliwa ngaphandle phakathi kweediski ngamandla e-centrifugal. Ubungakanani obuhlayo bee-grooves buhlukanisa ngokuthe ngcembe iifayili, zincediswa yi-lignin ethambileyo phakathi kwabo.
Ukusuka kwi-defibrator, ipulp ingena 'kumgca wokuvuthela', inxalenye eyahlukileyo yenkqubo ye-MDF. Lo ngumbhobho ojikelezayo owandisiweyo, ekuqaleni ube ngama-40 mm ububanzi, onyuka ukuya kwi-1500 mm. I-wax ijojowe kwinqanaba lokuqala, eligubungela iifayili kwaye lisasazwa ngokulinganayo yintshukumo ephazamisayo yeentsinga. I-resin ye-urea-formaldehyde ithi ke itofwe njengeyona arhente idibanisayo. I-wax iphucula ukuxhathisa ukufuma kunye ne-resin ekuqaleni inceda ukunciphisa ukugoba. Izinto zoma ngokukhawuleza kwigumbi lokugqibela lokwandiswa kobushushu bomgca wokuvuthela kwaye liyanwebeka libe yifayibha ecolekileyo, efukufuku kunye nekhaphukhaphu. Olu fayibha lunokusetyenziswa kwangoko, okanye lugcinwe.
Ukwenziwa kwephepha
Ifiber eyomileyo ifunxwa kumphezulu 'wependistor', ethi isasaze ifayibha ngokulungeleleneyo kwimethi efanayo ezantsi kwayo, idla ngokuba yi-230-610 mm ubukhulu. Imethi icinezelwe kwangaphambili kwaye mhlawumbi ithunyelwe ngokuthe ngqo kumatshini wokushicilela oshushu oqhubekayo okanye isikwe kumaphepha amakhulu okushicilela okushushu okuvula kaninzi. Umshicileli oshushu uvula i-resin edibeneyo kwaye usete amandla kunye neprofayili yoxinaniso. Umjikelo ocofayo usebenza ngokwezigaba, ubukhulu bemethi bunyanzeliswa kuqala ukuya kuthi ga kwi-1.5 × ubukhulu bebhodi obugqityiweyo, emva koko bucinezelwe ngakumbi ngezigaba kwaye bubanjwe ixesha elifutshane. Oku kunika iprofayili yebhodi enezowuni zokuxinana okwandisiweyo, ngoko ke amandla omatshini, kufutshane nobuso obubini bebhodi kunye nombindi oxineneyo omncinci.
Emva kokucinezela, i-MDF ipholile kwi-dryer yenkwenkwezi okanye i-carousel yokupholisa, ihlanjululwe kwaye ifakwe isanti. Kwizicelo ezithile, iibhodi zikwalaminethiwe ukomelela okongeziweyo.
Inkqubo yokuvelisa i-MDF
Any questions please feel free to ask me through Andrew@sinotxj.com
Ixesha lokuposa: Jun-22-2022