Rau nws lub peev xwm oxidation tsawg, kub yog cais raws li cov hlau zoo. Li no nws tus nqi. Nyob rau tib lub sijhawm, kub yog cov hlau mos, yog li cov khoom tsim los ntawm cov khoom siv ntshiab yog cov khoom tawg yooj yim heev. Txhawm rau kom muaj kev tiv thaiv ntawm cov hniav nyiaj hniav kub rau kub, nyiaj thiab tooj liab feem ntau ntxiv. Hauv qee lub tebchaws, qhov no tuaj yeem suav nrog zinc, npib tsib xee, palladium thiab cob alt. Cov hlau no nce lub zog ntawm cov khoom, tab sis lawv yuav tsum nyob rau hauv me me, vim hais tias nws yog kub uas muab cov khoom tiv thaiv corrosion.
Vim li cas hom kub
Qhia txog qhov sib faib ntawm cov khoom kub hauv cov khoom, ib hom tshuaj muab tso rau ntawm nws, uas yog hu ua kev tawg. Nyob rau hauv lub teb chaws nrog lub metric system, lub fineness yog qhia raws li ib puas grams ntawm precious hlau ib kilogram ntawm alloy. Piv txwv li, tus qauv 585 txhais tau hais tias muaj 585 grams kub hauv ib phaus ntawm cov hlau no. Hauv lwm lo lus, cov khoom no yog 58.5% cov hlau muaj nuj nqis.
Nyob rau hauv lub tebchaws uas tsis yog-metric system, carats yog siv los qhia qhov piv ntawm cov khoom muaj nqi thiab lwm yam hlau hauv cov khoom. Hauv qee lub tebchaws nws tso caimetric thiab carat. Nyob rau tib lub sijhawm, tsuas yog kub ntsuas hauv carats, cov qauv ntsuas yog siv rau lwm cov hlau muaj txiaj ntsig.
Yog koj tsis paub yuav tshuaj xyuas qhov tseeb ntawm cov kub hauv tsev, ua ntej ntawm tag nrho, ua tib zoo tshuaj xyuas kom tsis txhob muaj kev puas tsuaj sab nraud thiab muaj cov cim qhia.
Yog tias koj pom cov cim hauv carats, koj yuav tsum paub tias:
- 9 carats sib npaug 375 fineness.
- 12 carat - 500 nplua.
- 14 carat - 585 nplua.
- 18 carat - 750 nplua.
- 21 ct - 875 nplua.
- 22 carats - 917 nplua.
- 23 carats - 958 nplua.
- 24 carats - 999 fineness, thiab qhia txog cov hlau muaj txiaj ntsig hauv nws daim ntawv purest.
Cov khoom kub yuav tsum tsis txhob qhia pom tseeb ntawm kev xeb. Yog tias muaj, qhov no txhais tau hais tias tsis muaj kub hauv cov khoom lag luam lossis nws qhov tshwj xeeb lub ntiajteb txawj nqus yog qis dua 30%.
Yuav ua li cas ntsuas kub nrog iodine
Yog tias thaum lub sijhawm kuaj cov khoom koj tsis pom nws cov qauv, ces nrhiav seb nws puas yog kub lossis tsis, iodine yuav pab koj. Txij li thaum iodine yog ib qho ntawm ob peb yam tshuaj uas ua rau kub, nws yog qhov zoo tshaj plaws los txiav txim siab nws qhov tseeb.
txhawm rau kuaj pom muaj kub hauv cov hlau, koj yuav tsum tau muab iodine me ntsis rau ntawm nws. Tom qab ib feeb, iodine tuaj yeem ntxuav. Yuav tsum muaj stains ntawm cov khoom. Yog tsis muaj, nws tsis yog ua los ntawm kub. Yog tias cov khoom tau muab los ua qhov tseeb, nws cov qauv tuaj yeem txiav txim siab los ntawm cov jeweler lossis siv cov cuab yeej tshwj xeeb. Qhov kev pabcuam no zoo liyuav tsis pub dawb.
Yuav ua li cas ntsuas kub nrog iodine kom tsis txhob ua kom cov khoom puas? Koj yuav tsum tau ua nrog ceev faj heev. Nws yog qhov zoo tshaj rau siv iodine los ntawm sab tsis ncaj ncees lawm. Cov speck uas tshwm yuav tsum tau muab tshem tawm tam sim nrog Coca-Cola haus lossis tshuaj txhuam hniav.
Yog tias tsis muaj iodine hauv tsev, vinegar zoo tib yam yuav ua rau kev sim. Muab cov khoom tso rau hauv ib lub thawv ntawm vinegar, thiab yog tias cov khoom tau tsaus, nws tsis yog kub nyob rau hauv pem hauv ntej ntawm koj.
kuaj kub nrog hlau nplaum
Kub tsis muaj cov cuab yeej ntawm cov hlau nplaum, zoo li cov hlau uas feem ntau suav nrog cov hlau ntawm cov hniav nyiaj hniav kub. Yog li ntawd, txoj kev no tsis yog ntau heev los txiav txim siab lub xub ntiag ntawm kub, tab sis nws tsis tuaj. Koj yuav tsum coj ib lub hlau nplaum thiab coj nws los ze zog rau cov khoom. Yog hais tias cov khoom lo rau cov hlau nplaum, nws yog tiag tiag fake. Txoj kev yog qhov zoo yog tias lawv tab tom sim frankly dag rau koj. Tseeb tiag, nrog kev loj hlob ntawm cov cuab yeej siv niaj hnub no, nws tuaj yeem ua cov hniav nyiaj hniav kub cuav txawm nyob hauv tsev.
Kaws nrog lapis cwj mem
Yuav kuaj kub hauv tsev li cas siv nyiaj nitrate lossis, yooj yim muab, lapis mem hluav? Cov cwj mem no yog qhov tshwm sim ntawm cov tshuaj tiv thaiv ntawm cov nyiaj thiab nitric acid. Nws yog ib qho zoo heev reagent thiab yog dav siv nyob rau hauv cov tshuaj rau sterilizing qhov txhab. Peb yuav xav tau nws rau kev sim nrog kub. Txij li nyiaj nitrate yog yooj yim soluble hauv dej, cov khoom yuav tsum tau wetted kom ceev cov tshuaj tiv thaiv. Tom qab ntawd kos rau ntawm nws nrog lapis mem hluav. Ntawm cov khoom kub yuav tsum tsis txhob muajtaug.
Kaws kub rau hniav
Yuav kuaj kub li cas yog tias tsis muaj txhais tau tias yog improvised? Tej zaum koj tau pom hauv cov yeeb yaj kiab li cas pirates uas nrhiav kub sim nws ntawm lawv cov hniav. Ib yam yog ua los ntawm cov neeg sib tw Olympic thaum lawv nthuav tawm nrog cov khoom plig kub, uas tau dhau los ua kev lig kev cai es tsis yog qhov kev sim tiag tiag. Qhov tseeb, txoj kev no, thaum ub raws li lub ntiaj teb, tseem siv tau niaj hnub no. Txij li thaum kub yog ib tug heev mos hlau, tom qab ib tug tom, tsis txawm ib tug ntshiab hlau, ib tug kab yuav tsum nyob twj ywm rau ntawm nws. Thiab qhov tob dua, qhov kub ntau dua nyob rau hauv cov khoom, thiab, raws li, nws tus qauv siab dua.
Kev txiav txim siab ntawm qhov tseeb ntawm qhov ntom ntom
Kub yog hlau hnyav heev. Nws qhov ceev yog 19.32 g / cm3, thib ob tsuas yog rau rau lwm yam tsis tshua muaj hlau sib npaug. Yog li ntawd, qhov zoo no feem ntau siv los txiav txim qhov tseeb ntawm kub. Piv txwv li:
- 14 carats (583 fineness) sib haum rau qhov ntom ntawm cov khoom 12.9 - 14.6 g / cm3
- 18 carats (750 fineness) sib haum rau qhov ntom ntawm cov khoom 15.2 - 15.9 g / cm 3
- 22 carats (916 nplua) sib haum rau qhov ntom ntawm cov khoom 17.7 - 17.8 g / cm3
- 24 carats (999 nplua) sib haum rau qhov ntom ntawm cov khoom 19.32 g / cm 3
Ua ntej, ntsuas koj cov khoom. Yog tias koj tsis muaj qhov ntsuas tshwj xeeb, koj tuaj yeem ua tiav ntawm lub tsev qiv nyiaj. Tsis zoo li lub ntsiab txhais ntawm cov qauv, jewelers muab qhov kev pab no dawb xwb.
Tom qab ntawd coj lub raj xa mus, nyiam dua nrogkawm tiav scale, thiab sau nws nrog dej. Cov dej tsis muaj teeb meem. Qhov loj tshaj plaws yog tias nws npog cov khoom. Muab cov hniav nyiaj hniav kub tso rau hauv lub raj ntsuas thiab saib seb cov dej tau nce siab npaum li cas ntawm qhov ntsuas. Txoj kev no koj yuav paub qhov ntim ntawm cov khoom.
Sib faib qhov hnyav ntawm cov khoom los ntawm nws qhov ntim muab rau koj qhov ntom ntom.
Piv txwv, cia li muab kub 585. Yuav kuaj li cas? Tom qab qhov hnyav, peb pom tias cov khoom hnyav 27 g. Tom qab txo cov khoom rau hauv dej, peb pom tias cov dej tau nce los ntawm 2 ml. Yog li, qhov ntim ntawm cov khoom yog 2 cm 3. Faib qhov hnyav ntawm 27 g los ntawm qhov ntim ntawm 2 cm3, peb tau txais qhov ceev ntawm 13.5 g / cm 3, uas sib haum rau 14 carats.
Yuav ntsuas kub nrog ceramics
Thiab yog tias koj tsis xav tias yuav ua rau cov khoom lag luam tsis zoo, thiab ntxiv rau, tsis muaj cov cuab yeej tsim nyog hauv tsev? Yuav kuaj kub hauv tsev li cas hauv qhov no? Cov lus teb yog yooj yim - nrog kev pab los ntawm ceramic tais diav. Nqa ib lub phaj, nyiam dua dawb, thiab koj yuav tsis xav ua kom puas. Muab cov khoom tso rau hauv nws thiab rub nws me ntsis. Yog tias cov cim dub tseem nyob ntawm lub phaj, ces cov khoom tsis yog ua los ntawm kub, tab sis yog tias cov kab yog daj, ces feem ntau cov khoom yog tiag tiag.
Kev paub txog kev kuaj kub, koj tuaj yeem tsis tsuas yog tiv thaiv koj tus kheej los ntawm cov neeg dag ntxias, tab sis kuj yooj yim thiab nrawm txiav txim siab tus nqi ntawm cov hniav nyiaj hniav kub pom.
