Dawb Aluminium Oxide Sib Tsoo LogS muaj kev ua tau zoo thiab cov ntawv thov dav. Txawm li cas los xij, thaum lub sijhawm tsim khoom, qee qhov kev sib tsoo log feem ntau pom kom tig liab tom qab tua neeg hauv lub qhov cub. Txhawm rau nrhiav qhov ua rau pom kev liab no, lawv cov ntoo khaub lig tau qhib rau kev soj ntsuam, pom tias cov xim sab hauv thiab sab nraud zoo ib yam.
Sib tsoo log los ntawm tib lub pob ua tau zoo li cov xim liab thiab dawb, cuam tshuam rau lawv cov tsos zoo. Vim li cas cov kev sib tsoo log tig liab tom qab tua hluav taws? Dab tsi ntawm cov xim yeeb tshuaj ua yeeb yam lub luag haujlwm thaum tua hluav taws? Nws yog feem ntau ntseeg hais tias cov tshwm sim no yog tshwm sim los ntawm cov muaj zog oxidizing ib puag ncig sab hauv lub kiln thiab cov hlau cov ntsiab lus hauv cov log sib tsoo.
Thaum kev tshawb nrhiav cov laj thawj rau cov xim liab ntawm cov neeg sib tsoo thaum lub sijhawm liab dawb sib tsoo yog vim tsis muaj tshuaj tiv thaiv oxidizing thaum lub sijhawm sib tsoo. Yuav ua li cas peb tuaj yeem nrhiav tau cov lus teb kom yog thaum muaj ntau yam ntxiv? Ua tau, nws yooj yim heev; Qhov no tuaj yeem kuaj xyuas tau los ntawm kev sim.
Cov khoom siv raw, dawb feded alumina abrasive, yog dawb. Qhov laj thawj tsim tawm yog xim liab yog qhov cuam tshuam nrog kev suav ib puag ncig. Nqa ob txoj kev sib tsoo log ntawm cov duab ntxoov ntxoo sib txawv los ntawm cov uas tig liab tom qab tawm ntawm kiln, thiab faib txhua yam ua peb ntu.
Thaum thauj lawv mus rau hauv qhov cub cua sov, faib lawv ua peb pawg, nrog ib lub log tsaus nti ua ke nrog ib pawg. Muab ob pab pawg nyob rau ntau qhov chaw ntawm cov cub tawg, tawm ntawm ib pawg sab nraud rau kev sib piv. Nco ntsoov nyob ib puag ncig txhua pab pawg ntawm cov qauv nrog qee cov kab ke carricon carbide artifacts thaum kuaj xyuas.
Teem lub sijhawm tua hluav taws rau 6 teev. Thaum lub hwj chim thaum pib muab, kho cov ntsuas hluav taws xob kom qib ob, tso cai rau nws kom sov dawb. Thaum qhov kub nce qeeb qeeb, kho cov ntsuas hluav taws xob mus rau qib siab dua.
Thaum qhov ntsuas kub nce mus txog qhov ntsuas kub, txiav tawm lub zog thiab cia nws txias ib txwm muaj. Tshem tawm nws los ntawm cov cua sov thaum lub tee qhov ntsuas kub mus rau 120 degrees Celsius. Lub hom phiaj ntawm kev sim yog txhawm rau txhawm rau paub tias cov xim dawb tsis tuaj yeem raug rho tawm hauv lawv lub xeev dawb los ntawm kev hais tawm hauv lub cub tawg nrog ib qho cub tawg.
Tom qab ob qhov kev sim, nws tau pom tias cov xim liab sab hauv thiab saum npoo ntawm cov xim dawb aluminium zoo sib tsoo tom qab nws whiter dua li lub log tsis liab.
Qhov no qhia meej tias qhov liab liab ntawm lub log sib tsoo tom qab tua hluav taws yog qhov tshwm sim los ntawm kev ua haujlwm oxidizes muaj zog.
Feem ntau ntawm cov ferric oxide muaj nyob hauv cov log sib tsoo nws tus kheej los ntawm phau ntawv no. Qhov no hlau decomposes thiab manifests li ferric oxide. Nyob rau hauv kev muaj tiag, hlau tam sim no nyob rau hauv cov zaub mov muaj xws li ob qho tib si tsawg kawg thiab cov hlau muaj txiaj ntsig zoo.
Cov hlau no ua ke yog khi ua ke hauv cov ntxhia li cov khoom siv me me. Feem ntau, ferric oxide yog liab rau xim av, thaum hlau oxide yog grey lossis bluish-ntsuab.
Los ntawm kev txheeb xyuas saum toj no, nws tuaj yeem pom tau tias qhov liab qab ntawm cov log dawb txhuas txhuas txhuas muaj feem xyuam rau ib puag ncig. Cov tshuaj oxidizes muaj zog oxidizes yooj yim ua rau muaj cov tshuaj tiv thaiv, tig cov kev sib tsoo lub log liab liab. Tsis tas li ntawd, nws tau txheeb xyuas tias lub hardness ntawm lub cav sib tsoo reddened yog qis dua qhov uas tsis-reddened log.
Thiab feem ntau hais lus, rau kev sib tsoo log ntawm tib cov lus tshwj xeeb, qis dua lub hardness, qis dua lub zog. Yog li ntawd, txawm hais tias los ntawm kev pom ntawm cov tsos lossis kev ua yeeb yam, txhuas oxide sib tsoo cov log yuav tsum tau raug rho tawm haujlwm hauv nruab nrab lossis tsis muaj zog.
