1. Txheeb xyuas qhov hardness: qhov siab dua qhov zoo ntawmtooj liabhniav nyiaj hniav kub, qhov softer qhov kev ntxhib los mos thiab lub whiter thiab smoother nto.Copper alloy manufacturers siv tooj liab bracelets txog 60 grams ua piv txwv.Yog tias lawv rub qhib los ntawm tes, tsis muaj elasticity, thiab lawv cov fineness yog li ntawm 95%.Yog hais tias muaj me ntsis elasticity, lub fineness yog hais txog 80% -90%;Yog hais tias lub elasticity loj, lub fineness yog qis dua 70%.
2. Saib cov stubble: txiav los yog quav cov hniav nyiaj hniav kub kom pom cov xim ntawm cov stubble.Yog hais tias cov hniav nyiaj hniav kub yog mos, cov stubble yog tuab thiab mos, me ntsis reddish, thiab xim yog hais txog 95%;Yog hais tias nws yog ib qho nyuaj rau khoov los ntawm txhais tes, cov stubble yog dawb thiab grey, los yog me ntsis liab, thiab xim yog hais txog 90%;Yog hais tias lub hardness yog hais txog 90% Loj, lub stubble yog lub teeb liab, daj-dawb los yog grey, thiab cov fineness yog hais txog 80%;yog cov stubble nyuaj, stubble reddish, yellowish, khaki thiab lwm yam xim, thiab fineness yog hais txog 70%;Yog hais tias daim di ncauj yog dub, los yog daj nrog dub, thiab qhov fineness yog qis dua 60%.
3. Txoj kev khoov: pinch thiab khoov nrog cov ntiv tes, zoo zoo muag muag thiab yoog raws, yooj yim rau khoov thiab tsis yooj yim tawg;kev khoov tsis zoo yog qhov nyuaj, lossis tsis tuaj yeem khoov, thiab qee qhov tsis tuaj yeem khoov nrog ntiv tes;tooj liab-clad Tus fake yuav tawg tom qab khoov los yog khob nrog rauj ob peb zaug;tus fake yuav tsis muaj peev xwm tiv tau khoov thiab yooj yim tawg.Puas muaj cov txiaj ntsig kev noj qab haus huv tau los ntawm kev hnav cov hniav nyiaj hniav kub sib nqus, uas feem ntau muaj txiaj ntsig zoo nkauj.
4. Cov txheej txheem pov tseg: cov khoom siv tooj liab zoo, muab pov rau ntawm lub rooj tsavxwm, tsis tuaj yeem dhia siab, muaj lub suab "pop";cov hniav nyiaj hniav kub tsis zoo los yog tsis zoo tooj liab yog lub teeb, muab pov rau ntawm lub rooj tsavxwm thiab bounces siab heev, ua rau lub suab zoo sib xws.Cov lus qhia zoo tshaj plaws rau kev ua hauj lwm nrog tooj liab cov hniav nyiaj hniav kub muaj xws li kev sim nrog cov txheej txheem sib txawv thiab xav txog kev ua tiav.Tsis kho tooj liab muaj qhov ci uas hloov xim thaum lub sijhawm.Ob qhov tooj liab thaiv nrog rau cov xov yuav siv tau los ua cov qhwv ntsej, caj dab, bracelets thiab rings.
Ntshiab tooj liab, raws li lub npe implies, yog tooj liab nrog lub siab tshaj plaws tooj liab ntsiab lus, vim hais tias cov xim yog ntshav-liab, los yog liab tooj liab.Cov khoom tseem ceeb yog tooj liab thiab nyiaj, thiab cov ntsiab lus yog 99.5-99.95%.Lub ntsiab impurity: phosphorus, bismuth, antimony, arsenic, hlau, nickel, lead, tin, sulfur, zinc, oxygen, thiab lwm yam.
Post lub sij hawm: Jun-13-2022