Daim iav tus kheej ua nyob rau hauv curly thav duab yog qhov zoo nkauj sab hauv kho kom zoo nkauj thiab khoom plig zoo tagnrho rau tus phooj ywg zoo. Txoj kev zoo nkauj ntawm kev ua daim iav yog tias koj tuaj yeem txiav txim siab qhov zoo ntawm ob qho tib si qhov kev cuam tshuam nws tus kheej thiab tus ncej, thiab tib lub sijhawm nws cov xim.
Cov Lus Qhia
Kauj ruam 1
Npaj ib qho chaw ua haujlwm. Nws yog qhov zoo dua rau kev ua haujlwm sab nraum zoov lossis hauv qhov chaw muaj cua zoo, vim tias koj yuav tsum tau ua haujlwm nrog cov tshuaj tiv thaiv kab mob uas muaj teeb meem rau txoj hlab pa.
Kauj ruam 2
Dissolve cov nyiaj khoom hauv 10% nitric acid tov. Lub npib qub yog tsim nyog raws li cov khoom.
Kauj ruam 3
Evaporate kev daws thiab calcine nag lossis daus los mus qhia tooj liab. Dov ntuav cov nag lossis daus dua nyob rau hauv cov dej distilled, tooj liab yuav khom rau hauv qab. Ncuav cov tshuaj rau lwm lub ntim.
Kauj ruam 4
Cov kauj ruam tom ntej hauv kev ua daim iav yog xaiv iav. Nws yuav tsum yog ntawm cov tuab tuab zoo thiab tsim thiab dawb los ntawm kev tsis xws luag. So nws nrog kev daws ntawm cov dej distilled thiab chalk hmoov. So hauv lub xaus dhau.
Kauj ruam 5
Muab daim iav tso rau ntawm kab rov tav thiab sau nrog tin dichloride tov. So nrog daim txhuam cev, tshem tawm cov kab ntawm qhov kev daws teeb meem. Npaj ob zaj nkauj: 10 gr. ammonia tov (kev xav 25%), 5 gr. nyiaj nitrate, 50 ml. caustic poov tshuaj (daws nrog lub ntsiab ntawm 10%), dej distilled rau ib liter. Qhov thib ob muaj pes tsawg leeg: 25 gr. qab zib, 10 ml. nitric acid (kaum feem pua daws), dej kom txog 250 ml. Boil rau tsib feeb.
Kauj Ruam 6
Muab cov kev daws thawj thiab thib ob tso rau hauv qhov sib piv 9: 1, feem. Tso cov dej sib tov rau nruab nrab ntawm lub khob. Kis tusyees tshaj tag nrho saum npoo nrog lub pas nrig iav. Tom qab 10-10 feeb. Muab cov kua los tso rau hauv lub khob. Rov qab hliv peb mus rau plaub zaug. Tshem plaque dawb nrog chamois.
Kauj Ruam 7
Yaug thiab qhuav lub khob. Xim cov xim-plated ib feem nrog cov txhuas liab ua kom nrov nrov nyob hauv turpentine. So cov feem uas tsis yog nyiaj nrog kua nitric acid. Tso daim iav rau ntawm tus ncej.
