Paduk Ntoo (11 Daim Duab): Yam Ntxwv Ntawm African Ntoo, Cov Khoom Thiab Qhov Ntom Ntom Ntom, Cov Ntoo Thiab Cov Laug Cam, Xim

2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2023-12-16 05:41

Paduk yog tsob ntoo txawv txawv ib txwm nyob rau thaj chaw huab cua sov . Nyob rau hauv lub npe dav "paduk", kwv yees li 70 hom ntoo ntawm cov genus "pterocarpus" tau koom ua ke, uas txhais tau tias "muaj txiv hmab txiv ntoo" lossis "muaj kua tis" - qhov no yog cov neeg hu cov noob ntawm tsob ntoo no. Paduk ntoo muaj qhov ua tau zoo tshwj xeeb, yog li nws yog qhov xav tau ntau hauv kev lag luam.

Nqe lus piav qhia

Paduk yog ib txwm nyob hauv hav zoov ntawm New Guinea, Malaysia, nrog rau Philippines thiab West Africa. Txog rau hnub no, kev cais nruj ntawm hom ntoo no tsis tau tsim los, vim tias muaj qhov tsis meej pem hauv cov lus txhais. Ntxiv rau "paduk", cov npe xws li "Burmese mahogany" thiab "narra" tau dhau mus thoob plaws.

Ntoo paduk loj tuaj txog 35-40 m, thiab nws txoj kab uas hla mus txog 1 m. Nws yog qhov txawv los ntawm cov ceg ntoo uas muaj ceg, ceg tau qis qis, ceg qis feem ntau mus txog hauv av.

Cov nplooj ntawm cov nplooj yog ci, loj hlob transversely ntawm nyias txiav. Ntawm ib feem ntawm nplooj, lawv ci ntsuab, ntawm qhov tod, lawv yog xim daj lossis ntsuab-ntsuab. Thaum cov tawv ntoo raug txiav, cov kua txiv uas muaj cov kua roj hmab tso tawm. Cov noob yog puag ncig thiab muaj tis. Paduk yog tsob ntoo ntsuab, txawm li cas los xij, nrog kev hloov pauv huab cua, tsob ntoo ntsib kev nyuaj siab thiab cuam tshuam cov nplooj ntoo.

Txog xya kaum kaum hom ntawm tsob ntoo no tau paub . Cov neeg sawv cev ntawm tus tsiaj muaj ntau yam xim los ntawm beige rau liab thiab txawm tias xim av tob. Cov ntoo ntoo zoo ib yam li cov ntoo ntoo, thiab nws tuaj yeem nyuaj rau tus neeg tsis paub ntaub ntawv kom paub qhov txawv ntawm lawv. Txawm li cas los xij, qhov zoo nkauj ntawm tsob ntoo Burmese yog qis dua, ntxiv rau, nws tsis tiv taus kev puas tsuaj.

Cov khoom siv saw tshiab tau hnov tsw ntawm ntoo cedar. Sij hawm dhau los, cov xim burgundy lossis xim av tshwm rau ntawm nws qhov chaw. Paduk ntoo yog tawv thiab hnyav.

Cov khoom thiab cov yam ntxwv

Narra cov fibers tau npaj ua ntu zus, qhov kev ntxhib los mos yog qhov nruab nrab, thiab cov qauv txawv txawv tau hais tawm ntawm qhov txiav. Paduk ntoo tau muab cais ua hom xim - nws yog qhov tsim nyog rau zas, pleev xim thiab pleev xim. Ua ntej siv, nws yuav tsum tau qhuav ntawm qhov kub ntawm 50-60 degrees . Tau ntau xyoo tom qab ziab, nws tsis tawg thiab tsis hloov nws cov kev ntxhib los mos.

Paduk tuaj yeem ua tiav tau yooj yim los ntawm txhais tes thiab tshuab . Txawm tias cov cuab yeej yooj yim tuaj yeem siv nrog cov khoom siv no. Nws tau yooj yim ua tiav ntawm cov cuab yeej tshwj xeeb - cov teeb meem tshwm sim tsuas yog thaum npaj hauv thaj tsam ntawm kev sib txuas ntawm cov fibers. Tsob ntoo txuas tau zoo, tuav cov ntsia hlau thiab ntsia hlau kom ruaj ntseg.

Nws muaj qhov nqus tau zoo, yog li nws teb tau zoo rau kev kho nrog primers. Tab sis thaum txheej nrog kua cawv, cov xim ntoo tau puas.

Hais txog qhov nyuaj, Burmese mahogany tau muab piv rau ntoo qhib thiab ntoo thuv, qhov ntsuas qhov hnyav yog 3, 8-3, 9 raws li Brinell, ntom-650-750 kg / m3 , nyob ntawm seb hom ntoo thiab kev loj hlob zoo li cas.

Cov ntoo fibers yog ncaj, tangled me ntsis. Cov qhov hws loj, tawg ua chaotically. Cov txheej txheem txhua xyoo yog qhov tsis meej pem. Qee qhov piv txwv muaj cov ntxhia ntxhia. Cov kab teeb tau xyaum ua qhov sib txawv yam tsis muaj kev nthuav dav. Lub parenchyma yog pterygoid, striped, tusyees faib.

Paduc yog ib tus neeg nkag siab zoo - Kev tsis haum tshuaj loj yog qhov tsawg, tab sis qhov muag thiab qhov hnoos qeev ntawm txoj kev ua pa tuaj yeem tshwm sim.

Nyob rau hauv qhov cuam tshuam ntawm tshav ntuj, xim ntawm ntoo hloov pauv, yog li ntoo siv tshwj xeeb rau kev ua haujlwm sab hauv. Sab hauv tsev, cov khoom paduk yuav tsum raug tiv thaiv los ntawm tshav ntuj ncaj qha thiab lub teeb pom kev zoo. Paduk ntoo tiv taus kab mob, pwm thiab kab mob.

Txawm li cas los xij, cov yoov tuaj yeem ua rau muaj kev puas tsuaj rau cov khoom. Yog li ntawd, thaum ua haujlwm paduk, nws yog ib qho tseem ceeb heev uas yuav tsum tau siv impregnations uas tiv thaiv kab tsuag.

Hauv txhua qhov kev hwm, ntoo yog qhov txawv los ntawm nws qhov ua tau zoo, piv txwv li, nrog kev sib cuag ncaj qha nrog hauv av, nws khaws nws cov tsos zoo li 30 xyoo.

Daim ntawv thov

Khoom paduk thiab hlais veneer tau siv dav . Cov ntaub ntawv no tau siv hauv cov kws ntoo, rooj tog zaum thiab tsim khoom lag luam, ntxiv rau hauv kev tsim nkoj. Ua tsaug rau cov ntoo uas hnyav thiab tiv taus, cov khoom siv xav tau hauv kev tsim cov khoom siv ua liaj ua teb, cov rooj sib tham parquet, cov cuab yeej siv suab paj nruag, phab ntsa vaj huam sib luag, rab riam tuav thiab cov lus hais txog billiard. Cov khoom qib qis feem ntau yog siv los kho cov tsheb laij teb. Thaum siv nyob rau hauv cov chaw uas muaj cov av noo siab tas mus li, nyiam dua nws yog qhov zoo dua los muab rau tsob ntoo uas paub tab xwb.

Feem ntau cov neeg African paduk tau pom ntawm lub khw, nws yog qhov nrov heev nrog cov kws ua khoom siv vim yog xim txawv ntawm ntoo. Ntau yam ntawm Burmese thiab Andaman tsis tshua muaj tshwm sim.