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    •   Intellectual Repository at Rajamangala University of Technology Phra Nakhon
    • Faculty and Institute (คณะและสถาบัน)
    • Faculty of Engineering
    • Research Report
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    A study and analysis heat treatment process develop the composition of low white gold alloys 8wt% Ag Au Cu Zn Sn for jewelry setting manufacturing

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    ENG_62_61.pdf (4.265Mb)
    Date
    2020-02-03
    Author
    Singsomboon, Greta
    กรีฑา สิงห์สมบูรณ์
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    Abstract
    This Research is to Study the Development of 6k White Gold Low Alloys Metal for Jewelry Production The Optimum Conditions for Casting Jewelry and Jewelry were Investigated. The Results of the Experiments Show that the Chemical Composition of the 8k White Gold Low Alloys is Slightly Different when Compared with XRF (X-ray Fluorescence Spectrometers) Pre-and Post-Melting Quantities The Heat of the Test Specimen was found to be 33.33%Au+50.67%Ag+10%Cu+5%Zn+1%Sn,33.33%Au+50.67% Ag+8% Cu+7%Zn+1%Sn and 33.33%Au+50.67%Ag+8%Cu+8%Zn+0%Sn It is Found that the Heat from the Beginning to the Level of Change before the Liquid is used the Average Temperature of 458.9 – 326.3 Degrees Celsius, Respectively, 33.33%Au+50.67%Ag+8%Cu+7%Zn+1%Sn It is the Formula that Gives the Lowest Value of Liquid State Change from 326.3 Degrees Celsius to the Best Value of this Experiment. Suitable for use in the Manufacture of Jewelry due to its Melting Ability for Molding. Melting for Molding and Formed by Hand. The Amount of Zinc(Zn) may be an Important Factor in the Variation, which is Directly Proportional to the Maximum Increase in the Final order of 7 Percent
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    http://repository.rmutp.ac.th/handle/123456789/3145
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