Cov lus txhais thiab cov ncauj lus ntxaws ntxaws ntawm plywood
Plywood, raws li ib qho tseem ceeb Engineering Wood cov khoom siv los ntawm cov txheej txheem ntoo nyob ua ke nrog cov nplaum ntoo uas muaj cov khoom siv nyias nyias raws li cov khoom siv nyias nyias muaj zog thiab cov kws kho tshuab ua ke nrog cov khoom ruaj khov thiab cov khoom siv hluav taws xob zoo li qhov ruaj khov sab nraud.
Raws li cov qauv sib txawv ntawm cov txheej txheem, plywood tuaj yeem faib ua ntau hom:
Qhia los ntawm kev siv:
Lub tsev dog dig plywood: feem ntau yog siv rau kev ua formwork, vaj tse ib ntus, thiab lwm yam
Plywood rau rooj tog tsim: nws yuav tsum tau ua kom zoo thiab zoo ib puag ncig kev tiv thaiv kev ua tau zoo
Ntim Plywood:Hais txog lub zog thiab kav ruaj khov
Plywood Rau Cov Tsheb Thiab Cov Nkoj: Tshwj Xeeb Hws noo-Ntawv Pov Thawj-Ntawv Pov Thawj thiab Kev Kho Mob tiv thaiv Corrosion
Tso tawm los ntawm dej tsis kam:
Chav kawm i plywood (huab cua-resistant plywood): ua nrog phenolic resin nplaum, nws tuaj yeem siv sab nraum zoov rau lub sijhawm ntev
Chav Kawm Ntawv Xyoo Peb-Dej-Resistant Plywood): nws siv urrea-formaldehyde cob kua nplaum thiab haum rau cov chaw noo noo
Chav Kawm III Plywood (Yoageure-resistant plywood): Haum rau cov chaw ib puag ncig sab hauv
Qeb plaub plhwood (noo noo-resistant plywood): rau siv tsuas yog nyob rau hauv cov chaw qhuav
Tso cais los ntawm kev kho deg:
Sanding Plywood: Cov nplaim muaj undergone sanding kho, ua rau nws du thiab tiaj
Veneered Plywood: Cov nplaim yog them nrog daim ntawv dai, ntoo veneer lossis zaj duab xis yas
Coated plywood: Cov nplaim yog kho nrog cov xim pleev xim lossis lwm yam txheej ci
Cov txheej txheem ua tiav ntws thiab cov ntsiab lus tseem ceeb ntawm plywood ntau lawm
1.} log xaiv thiab ua
Kev tsim cov khoom zoo plywood pib nrog kev xaiv nruj ntawm cov cav {}} lub cheeb}}}}}}}}}}}}}}}}}}}}}}}}}}}}} lub cav 60-80℃rau12-24}} teev) los txhim kho lawv cov tshuab luam ntawv.
2.} teb cov veneer txiav cov txheej txheem
Kev Txiav Txim Siab Yog Qhov Txheej Txheem Tseem Ceeb hauv kev tsim cov plywood {}}} {{{5} -92 degree) thiab qhov sib txawv ntawm rab riam (kwv yees li 80% ntawm cov tuab ntawm Veneer) zoo. Cov veneer zoo yuav tsum muaj cov khaub ncaws tuab thiab lub ntsej muag du tsis muaj kua muag.
3.} veneer tshuab ziab khaub ncaws
Veneer qhuav feem ntau ua rau lub tshuab ziab khaub ncaws, nrog rau cov ntsiab lus noo noo tuaj yeem ua rau veneer
{{0 {}} gluing thiab txheej txheem sib dhos
Cov nplaum nplaum suav nrog Urea-formaldehyde resin cov nplaum, feem ntau} Tus nqi ntawm cov veneer, cov textures ntawm Cov Veneers nyob ib sab yuav tsum tau hla hla, thiab tus naj npawb ntawm cov khaubncaws sab nraud povtseg yog feem ntau khib kom ntseeg tau tias cov qauv zoo nkauj.
{{05. Cov thev naus laus zis tseem ceeb ntawm cov kub nias txoj kev sib sau
Kev nias kub yog cov txheej txheem tseem ceeb hauv kev tsim ntawm plywood {}}}}}}}}}}}}}}} {{}}}}}}}}}}}}
6. position-ua thiab machining
Cov rooj tsav tsheb kub-nias xav tau kho tau ntau dua 24 teev, thiab tom qab ntawd cov khoom lag luam txiav ua xws li kho kom haum thiab txheej txheej saum npoo av thiab txheej.
Ib qhov txheej txheem ua tiav rau kev ntsuam xyuas zoo ntawm plywood
Qhov ntsuas lub cev ua tau:
Cov ntsiab lus noo: Cov qauv hauv tebchaws yuav tsum muaj 8%-14%
Ntom ntom: feem ntau ntawm 0.5 thiab 0.8g / cm³
Thermal conductivity: kwv yees li 0.12-0.15 w / (mapy)
Neeg kho tshuab cov ntsuas ntsuas:
Lub zog ntawm lub zog: ntau dua lossis sib npaug rau 0.70MPA rau chav kawm kuv cov phiaj, ntau dua lossis sib npaug rau cov chav kawm hauv II
Zoo li qub khoov khoov rau lub zog: ntau dua los yog sib npaug rau 30mpa (raws ntau dua lossis sib npaug)
Elastic modulus: ntau dua los yog sib npaug ntawm 3500MPA (raws ntau dua lossis sib npaug ntawm 2500MPA (hla cov nplej)
Kev tiv thaiv ib puag ncig kev ua tau:
Formaldehyde emission (raws li GB / t 17657-2013):
E 0 qib qis dua los yog sib npaug rau 0.5mg / l
E1 Qib tsawg dua lossis sib npaug rau 1.5mg / l
E2 qib qis dua lossis sib npaug rau 5.0mg / l
Voc repission: ua raws li cov cai ntawm gb 18580-2017
Cov tsos zoo ua tau zoo:
Deg tiaj tiaj: tsawg dua los yog sib npaug rau 0.5 hli / m
Ntug ntug: tsawg dua los yog sib npaug rau 1 hli / m
Cov xwm txheej saum npoo: Tsis muaj qhov tsis xws luag xws li kev lwj thiab cov pob qij txha tuag tau tso cai nyob rau hauv qhov txwv
