Chiyambi cha plywood.

Plywood ndi zinthu zosanjikiza zitatu kapena zamitundu ingapo zomwe zimapangidwa ndi matabwa omwe amasendedwa kukhala ma veneers kapena kuwadula mumitengo yopyapyala, kenako kumamatira ndi zomatira.Nthawi zambiri, ma veneers osawerengeka amagwiritsidwa ntchito, ndipo zigawo zoyandikana nazo zimagwiritsidwa ntchito.Mayendedwe a ulusi amamatira perpendicular kwa wina ndi mnzake.

Plywood ndi imodzi mwa zipangizo zomwe zimagwiritsidwa ntchito kwambiri popanga mipando, ndipo ndi imodzi mwa matabwa akuluakulu atatu a matabwa.Itha kugwiritsidwanso ntchito ngati ndege, zombo, masitima apamtunda, magalimoto, nyumba ndi mabokosi onyamula.Gulu la ma veneers nthawi zambiri amasonkhanitsidwa ndikumata pamodzi molingana ndi momwe njere zamatabwa zamagulu oyandikana zimayenderana.Nthawi zambiri, bolodi lakumtunda ndi bolodi lamkati lamkati limapangidwa molingana mbali zonse zapakati kapena pachimake.Silab yopangidwa ndi veneer pambuyo pa gluing imadutsa mozungulira molingana ndi momwe mbewu yamatabwa imayendera, ndipo imakanikizidwa pansi pa kutentha kapena kusatentha.Chiwerengero cha zigawo nthawi zambiri chimakhala nambala yosamvetseka, ndipo ena amakhala ndi manambala ofanana.Kusiyana kwa thupi ndi makina amachitidwe mu mayendedwe ofukula ndi yopingasa ndi yaing'ono.Mitundu yogwiritsidwa ntchito kwambiri ya plywood ndi matabwa atatu, matabwa asanu ndi zina zotero.Plywood imatha kupititsa patsogolo kugwiritsa ntchito nkhuni ndipo ndi njira yayikulu yopulumutsira nkhuni.

Pofuna kupititsa patsogolo mphamvu ya anisotropic ya nkhuni zachilengedwe momwe zingathere, kuti katundu wa plywood akhale yunifolomu ndipo mawonekedwe ake ndi okhazikika, mapangidwe a plywood ambiri ayenera kutsata mfundo ziwiri zofunika: imodzi ndi yofanana;china ndi chakuti ulusi wa zigawo zoyandikana za veneer ndi perpendicular kwa mzake.Mfundo ya symmetry ndi yofunika kuti ma veneers kumbali zonse ziwiri za symmetrical ndege yapakati ya plywood ayenera kukhala symmetrical wina ndi mzake mosasamala kanthu za chikhalidwe cha nkhuni, makulidwe a veneer, chiwerengero cha zigawo, malangizo a matabwa. ulusi, ndi chinyezi.Mu plywood yomweyi, ma veneers amtundu umodzi ndi makulidwe angagwiritsidwe ntchito, kapena ma veneers amitundu yosiyanasiyana ndi makulidwe angagwiritsidwe ntchito;komabe, zigawo ziwiri zilizonse za veneers zomwe zimakhala zofanana kumbali zonse za ndege yapakati yofanana ziyenera kukhala ndi mitundu yofanana ndi makulidwe.Pamaso ndi kumbuyo sikuloledwa kukhala amtundu wamtengo womwewo.

Kuti mapangidwe a plywood agwirizane ndi mfundo ziwiri zomwe zili pamwambazi panthawi imodzi, chiwerengero chake cha zigawo chiyenera kukhala chosamvetseka.Choncho, plywood nthawi zambiri imapangidwa kukhala zigawo zosawerengeka monga zigawo zitatu, zigawo zisanu, ndi zisanu ndi ziwiri.Mayina a gulu lililonse la plywood ndi: chophimba pamwamba chimatchedwa pamwamba pa bolodi, mkati mwake chimatchedwa core board;bolodi lakutsogolo limatchedwa gulu, ndipo gulu lakumbuyo limatchedwa bolodi lakumbuyo;mu core board, ulusi wowongolera umafanana ndi bolodi Imatchedwa bolodi lalitali kapena bolodi lapakati.Popanga ma slabs a paboti, mapanelo akutsogolo ndi akumbuyo ayenera kuyang'ana kunja mwamphamvu.