Cov neeg yuav khoom paub tias qhov tseeb ntawm cov khoom lag luam kub yog paub tseeb los ntawm lub xub ntiag ntawm qhov ntsuas, ua qhov kev sim. Tab sis tsis yog txhua tus paub yuav ua li cas qhov no los yog cov qauv txiav txim tau txiav txim siab, thiab cov khoom lag luam feem ntau yog cov xim kub nrog lwm cov hlau.
Qauv nta
GOST tsim kev ntsuas kub - cov nqi digital qhia qhov nyiaj kub hauv ib phaus ntawm alloy. Raws li GOST, muaj 40 cov kub kub ntawm 18 qhov qauv. Rau cov hniav nyiaj hniav kub, 5 alloys siv: 958, 750, 585, 583, 375. Kub 750, 585, 583 yog qhov tshwm sim ntau tshaj plaws hauv tebchaws Russia. Kuj tseem muaj 333 piv txwv rau cov nqi qis rau cov hniav nyiaj hniav kub hauv ntau lub tebchaws. Tag nrho cov khoom tau nyiaj nrog lub cim khoom qhia, tso cai rau koj kom pom cov feem pua ntawm cov kub hauv lawv.
Ib puas feem pua kub yog tsim 999 thiab tau ntev hu ua kub ntshiab. Txawm li cas los xij, nws tsis haum rau tsim cov hniav nyiaj hniav kub, vim hais tias yooj yim deformed thiab khawb vim nws cov softness. Tab sis cov nyiaj muab nqis peev rau nws.
Alloy 958 muaj peb ntu - kub, nyiaj, tooj, nws muag zoo heev. Nws yog tsuas yog siv rau kab tshoob rings. Cov alloy muaj cov xim zoo nkauj daj daj zoo nkauj, ze rau xim xim ntshiab kub.
Lub 750-carat alloy muaj li kub, tooj thiab nyiaj, thiab tseem yuav muaj npib tsib xee, palladium thiab zinc. Ntawm cov duab ntxoov ntxoo - greenish daj, reddish daj, dawb. Vim tias lawv cov hnav tsis kam dua, 750 khoom carat zoo hnav zoo dua rau kev ua koob tsheej thiab lub sijhawm tshwj xeeb.
Alloy 585 kuj tseem muaj peb-txheej alloy. Nws muaj 585 seem ntawm kub thiab 415 seem ntawm lwm cov hlau (piv txwv li 208 - nyiaj thiab 207 - tooj liab). Kub hauv qhov no yog 58,5%. Ua raws li txoj kev ua lig, cov alloy tuaj yeem muaj qhov sib txawv ntawm qhov nyuaj, lub ntsej muag sib txawv, sib txawv xim - liab pliv, pinkish, daj-zenish, dawb. Cov alloy muaj zoo solderability.
Kub 375 pom tus nqi muaj lub suab sib hloov, thiab thaum cov txhuam polish, qhov khoom ploj zuj zus mus. Kab tshoob rings yog tsim los ntawm cov hlau no. Alloy 333 tsis ruaj khov rau oxidation thiab yog me ntsis soluble hauv nitric acid.
Cov qauv siab tsis tau lees tias cov khoom lag luam zoo. Cov yaj yuav tsum tau ua kom ua raws li cov thev naus laus zis tshwj xeeb, txwv tsis pub muaj cov cheeb tsam uas muaj cov ntsiab lus kub tsawg, thiab lawv tuaj yeem tsoo thiab xeb. Kev tshaj lij ntawm cov tswv tseem tseem ceeb.
Dawb kub
Lub ligature muab cov alloy ua rau qee qhov ntxoov ntxoo: nyiaj - daj daj, cadmium - greenish, tooj liab - liab pliv thiab pinkish, palladium - steel zoo nkauj, hlau - bluish, txhuas - violet.
Qhov tsis zoo ntawm cov hlau ntau yam uas muab lub zog kub alloy, hnav tsis kam thiab lwm yam khoom yog hu ua ligatures.
Los ntawm ib qho alloy ntawm kub nrog palladium, nickel lossis platinum, tam sim no zam dawb kub tau txais. Nws yog ib qho uas muaj nqi thiab muaj txiaj ntsig. Tus ib yog alloyed nrog nyiaj, tooj, zinc thiab npib tsib xee, thiab lub noble yog alloyed nrog kim hlau palladium thiab platinum. Cov hniav nyiaj hniav kub kub feem ntau kim dua vim tias lub sijhawm siv ntau dua ntxiv kev siv zog ua haujlwm thiab cov nqi siab dua ntawm kev ua cov alloy. Dawb rhodium plated rau radiant txias ci thiab kev tiv thaiv los ntawm kev puas tsuaj.
