Kev lag luam niaj hnub paub ntau cov xov tooj hlau uas yooj yim, tab sis tej zaum qhov qub thiab tshaj plaws yog tooj: tooj hlau ntawm tooj nrog tin, beryllium, chromium, txhuas. Cov alloy no siv tsis yog hauv kev tsim khoom, tab sis kuj yog siv khoom siv tes ua khoom siv. Cov neeg ua haujlwm tsim khoom ua rau cov cai, adornments, thiab ua haujlwm tawm ntawm cov tooj dag tsis zoo.
Cov Lus Qhia
Kauj ruam 1
Los txiav txim siab tooj txhais tau tias kom paub cov khoom sib xyaw ntawm cov hlau uas koj muaj hauv koj txhais tes. Rau cov neeg uas ua haujlwm nrog tooj dag, kev kuaj ntshav yog qhov txaus. Ntxuav cov khoom los ntawm hmoov av thiab corrosive oxides. Tom qab ntawd mus rau kev kuaj mob nrog cov tsoos lossis binocular kom zoo nkauj, tab sis xaiv lub teeb pom kev zoo. Ua qhov kev sim sib txuas macroscopic mechanical trim nrog lub txaij me lossis rab riam ntse.
Los ntawm cov xim ntawm qhov kev txiav no, koj tuaj yeem txiav txim siab seb hom twg nyob ntawm koj. Nyob ntawm qhov muaj pes tsawg leeg, tooj daj muaj xim sib txawv. Yog tias tooj dag muaj 90% tooj liab, ces nws yog xim liab, yog tooj yog 85%, tom qab ntawd lub txhuas ua daj, yog 50% dawb, 35% yog steel grey.
Alloys ntawm tooj liab nrog beryllium yog ci liab, thiab nrog txhuas lawv muaj qhov ntxoov ntxoo pastel, thiab qee zaum sinewy blotches.
Kauj ruam 2
Txhawm rau ntsuas ntau dua kev txheeb xyuas, ua qhov kev tshawb fawb tshuaj siv cov tshuaj reagents. Qhov chaw 0.05 g ntawm cov alloy nyob rau hauv daim ntawv ntawm sawdust lossis shavings hauv beaker, ntxiv 10 ml ntawm nitric acid, uas yav dhau los tau diluted nrog dej hauv 1: 1 piv, npog lub beaker nrog khob. Tom qab ntau dua ntawm cov alloy tau yaj, sov cov kua hauv cov dej da dej kom ze rau ntawm ib lub rhaub thiab tsau nws li 30 feeb. Yog tias, tom qab qhov kev sim no, cov dej nag dawb tshwm nyob rau hauv qab ntawm tus beaker, tom qab ntawd cov khoom yog ua los ntawm tooj.
Kauj ruam 3
Nyob hauv thaj chaw muaj kev lag luam, siv lub ntsuas hluav taws xob. Cov cuab yeej no, raws li qhov muaj qhov muaj peev xwm ntawm lub cev lub cev ntawm cov hlau, nrog rau nws cov lus (piv txwv, scraping), ua qhov kev kawm ntawm nws cov khoom siv.
Kauj ruam 4
Hauv cov kev sim hauv chav kuaj, kev tsom xam tuaj yeem nqa los ntawm ib txoj kev yees duab raws li kev sib cuam tshuam ntawm cov hlau lead diethyldithiocarbamate nyob rau hauv chloroform nrog tooj liab ions hauv ib qho nruab nrab acidic, uas ua rau kev tsim cov tooj liab diethyldithiocarbamate. Cov neeg tsis paub txog tuaj yeem nkag siab qhov essence ntawm qhov tshuaj tiv thaiv los ntawm kev hloov cov xim ntawm cov kua hauv lub raj tshuaj mus rau cov khoom siv sim - nyob rau hauv ib puag ncig ntawm tooj hlau tooj, cov ntsiab lus tig daj-xim av.
