plywood ndi chiyani

Plywood ndi mtundu wa matabwa opangidwa ndi anthu omwe amasonkhanitsidwa ndi peel.

Plywood imapangidwa podula ma veneers am'dera lalikulu molunjika mphete zapachaka. Akaumitsa ndi kulumikiza, amapangidwa molingana ndi muyezo wa vertical mahogany grain orientation wa ma veneers oyandikana nawo.
Chiwerengero cha matabwa pachimake nthawi zambiri ndi kuchuluka kwa zigawo zosawerengeka, nthawi zambiri zigawo zitatu mpaka khumi ndi zitatu, ndipo kuchuluka kwa zigawozo nthawi zambiri kumakhala zigawo zitatu, zigawo zisanu, zigawo zisanu ndi zinayi, ndi zigawo 13 (msika wogulitsa umatchedwa plywood zitatu, zisanu. plywood, plywood naini, Masentimita khumi ndi atatu). Chovala chakutsogolo cha wosanjikiza wakunja chimatchedwa gulu lakutsogolo, kumbuyo kumatchedwa gulu lakumbuyo, ndipo gawo lamkati limatchedwa core board.

Plywood ya Type 1 ili ndi zabwino zokana nyengo, kukana madzi otentha, kulimba, kukana kutentha kwambiri, komanso kukana nthunzi.

Mitundu iwiriyi ya plywood ndi plywood yopanda madzi, yomwe imatha kuviikidwa m'madzi ozizira ndi madzi otentha pakanthawi kochepa.

Mtundu wa 3 plywood ndi plywood yopanda madzi, yomwe imatha kumizidwa m'madzi ozizira kwa nthawi yochepa, yomwe ili yoyenera kutentha kwamkati m'chipindamo. Zolinga za mipando ndi zomangamanga;
Mtundu wa 4 plywood ndi plywood yosamva chinyezi, yomwe imagwiritsidwa ntchito m'nyumba. Plywood yomwe imagwiritsidwa ntchito kwambiri imaphatikizapo birch, eucalyptus, ndi poplar.

Plywood imagwiritsidwa ntchito makamaka panja, monga kumanga zokongoletsera zakunja ndi mawonekedwe a konkriti. Pokongoletsa, amagwiritsidwa ntchito makamaka padenga, masiketi apakhoma, ndi zomangira pansi.

Zofunikira za plywood

Pofuna kukonza anisotropy yamatabwa achilengedwe momwe mungathere, plywood imakhala ndi mawonekedwe ofanana komanso mawonekedwe okhazikika. Nthawi zambiri, plywood iyenera kutsatira mfundo ziwiri zoyambira: imodzi ndi yofanana; china ndi chakuti moyandikana single board ulusi kuwala ndi perpendicular kwa mzake.

Mfundo ya symmetry ndi yakuti plywood imafunika mbali zonse zapakati pa ndege ya symmetry ya plywood, mosasamala kanthu za mtundu wa nkhuni, makulidwe a plywood, chiwerengero cha zigawo, njira ya ulusi, ndi chinyezi. zomwe zili ziyenera kukhala zofanana.

Mu plywood yomweyi, mitengo imodzi ndi ma veneers a makulidwe angagwiritsidwe ntchito, kapena ma veneers amitundu yosiyanasiyana yamitengo ndi makulidwe angagwiritsidwe ntchito; Komabe, zigawo ziwiri zilizonse za mitengo yofanana yofanana ndi makulidwe mbali zonse za symmetry center ndege ndizofanana.

Kuti mapangidwe a plywood agwirizane ndi mfundo ziwiri zomwe zili pamwambazi, chiwerengero cha zigawo chiyenera kukhala chosamvetseka.

Choncho, plywood nthawi zambiri imagawidwa m'magulu atatu, zigawo zisanu, zisanu ndi ziwiri ndi zina zosamvetseka.

Dzina la plywood wosanjikiza ndi: pamwamba veneer amatchedwa tebulo, mkati veneer amatchedwa core board; gulu lakutsogolo limatchedwa gulu, ndipo gulu lakumbuyo limatchedwa gulu lakumbuyo; mu bolodi pachimake, ulusi malangizo ndi kufanana gulu.

Imatchedwa long core board kapena mid-board.

Ubwino wa plywood
Ubwino wa plywood ndi amphamvu kubala mphamvu, si kosavuta deform ndi kupindika, si zophweka osokoneza, ndi kukula yaing'ono. Multilayer board ili ndi luso lotha kusintha kutentha kwamkati ndi chinyezi. Pamwamba pa bolodi la multilayer ndi nkhuni zachilengedwe. Njere zamatabwa zili pafupi ndi chilengedwe ndipo mawonekedwe ake ndi aakulu. Ubwino wa matabwa amitundu yambiri ndi osavuta kupanga. Poyerekeza ndi matabwa olimba a chipika, bolodi yamitundu yambiri imapewa zolakwika zina zamatabwa zachilengedwe, monga chibwibwi, m'lifupi, kupunduka, ndi kusakanizidwa bwino.

Ma matabwa amitundu yambiri amakhalanso ndi mwayi waukulu kuposa nkhuni zachilengedwe pamtengo. Popeza matabwa amitundu yambiri amasanthulanso ndikukonzanso zipika, zimakhala zotsika mtengo kuposa matabwa olimba amitengo.

Zoyipa za bolodi la multilayer
Bolodi yamitundu yambiri imapangidwa ndi matabwa achilengedwe amtengo wapatali kudzera pa kutentha kwakukulu komanso kukanikiza kwakukulu mu makina osindikizira otentha ndi zomatira. Chifukwa chake, pankhani yachitetezo cha chilengedwe, padzakhala kutulutsidwa kwa formaldehyde. Koma ili pafupi kwambiri ndi matabwa achilengedwe komanso ndi bolodi yopangira zinthu zachilengedwe.

Kuzindikiritsa plywood zabwino kapena zoipa
Choyamba, yang'anani flatness wa gulu. Kuchokera pamenepa, tikhoza kuona zipangizo zamkati za bolodi. Tikayang'ana bolodi, tikhoza kuigwira ndi manja athu ndikuwona ngati pali kusiyana kulikonse. Ngati alipo, ndiye kuti mchenga wamtunda si wabwino.

Mwina zikutanthauza kuti zida za boardboard sizili zabwino ndipo zida zake zasweka. Mwachidule, sikoyenera kugula zosagwirizana.

Chachiwiri, yang'anani tanthauzo la utsogoleri wa gulu la multilayer. Kuchuluka kwa bolodi, kumakhala kosavuta kuwona kusanjika kwa bolodi lamitundu yambiri. Ngati gawo lililonse limapangidwa ndi zinthu za monolithic, zigawozo zidzakhala zomveka bwino ndipo sipadzakhala chodabwitsa. Ngati zinthu sizili bwino, pali zotsalira zambiri.

Chifukwa cha kupanikizika, mlingowo udzakhala woipa kwambiri mutatha kufinya wina ndi mzake.