Dab tsi yog qhov tsis zoo ntawm birch?

Lub ntsiab tsis zoo ntawm birch muaj xws li tsis resistant rau kub kub, tsis muaj zog kab tsis kam, siab nqi, tsis zoo fiber shear kuj, yooj yim rau "lov oddly", tsis resistant mus lwj, siab hygroscopicity, yooj yim rau tawg thiab warp thaum ziab, tsis muaj zog, loj shrinkage, tsis zoo dej tsis kam, hnav tsis zoo, yooj yim kom ntub thiab tau kab, thiab txwv tsis pub siv.

1, Tsis tiv taus qhov kub thiab txias: birch muaj cov cua sov tsis zoo thiab yooj yim rau deform nyob rau hauv qhov kub thiab txias ib puag ncig ntev. Yog li ntawd, thaum siv cov khoom birch, koj yuav tsum tau xyuam xim kom tsis txhob raug lub sij hawm ntev ntawm qhov kub thiab txias ib puag ncig.
2, Tsis muaj kab mob tsis muaj zog: birch tau yooj yim tawm tsam los ntawm kab tsuag, borers thiab lwm yam kab tsuag, thiab kev tiv thaiv kab yuav tsum tau ua, thiab yuav tsum tau kuaj xyuas thiab tu tsis tu ncua.
3, Tus nqi siab: Vim qhov kev ntxhib los mos zoo thiab kev ua haujlwm ntawm birch, nws tus nqi kuj siab. Rau qee cov neeg siv khoom siv nyiaj tsawg, lawv tuaj yeem xaiv lwm cov ntoo uas pheej yig dua.
4, Tsis zoo fiber ntau shear kuj: birch fiber muaj tsis zoo shear tsis kam thiab yog ib qho yooj yim rau tawg tusyees, yog li birch rooj tog tsis hnav-resistant thiab tsis muaj zog tensile zog.
5, Tsis resistant rau lwj: Birch muaj siab hygroscopicity, thiab nws yog nquag tawg thiab warping thaum qhuav. Nws tsis hnav-tiv taus thiab yog nquag tawg thiab warping tom qab ziab.
6, Loj shrinkage: Thaum lub sij hawm ua cov txheej txheem, birch yog nquag mus shrinkage, uas yuav ua rau birch rooj tog tawg thiab deform thaum siv.
7, Cov dej tsis zoo: Birch muaj dej tsis zoo. Thaum siv nyob rau hauv ib qho chaw ntub dej, cov rooj tog zaum birch yog nquag deformation, pwm thiab lwm yam teeb meem.
8, Kev hnav tsis zoo: Piv nrog rau lwm cov ntaub ntawv tawv tawv, birch muaj qis hardness thiab hnav tsis zoo. Tom qab siv sijhawm ntev, khawb thiab hnav yuav tshwm sim ntawm cov rooj tog zaum birch.
9, Yooj yim rau kev cuam tshuam los ntawm ya raws thiab kab: Txawm hais tias birch muaj qee yam kab thiab kev tiv thaiv corrosion, birch rooj tog yog nquag ya raws thiab kab thaum siv nyob rau hauv ib qho chaw ntub dej.