Hard
Enamel is a kind of semi-transparent glass that grounded to
powder and applied by fusion on copper surface. For each color
ordered, a pin has to undergo one time direct heating over
1700F (800°C) before the powder can melt and crystallized.
That is, if there are 4 colors, the same pin has to undergone
4 baking process of one color after the other.
Features: preservable for over 100years with
ceramic-likened glaze; resistant to scratch, heat, humidity
& acidic chemicals, but limited in choice of colors. There
are tiny porous on surface due to natural impurities. Color
chart is available on “AOKI” or “FLOWER
VASE”.
Matching metal: is copper which capable to
endure similar high temperature but curved a little after
baking.
Production Process:
Customer Artwork > Develop negative film > Etching metal
Plate > Carving die/mold > Stamping design on metal
> Cutting out Design > Cleaning by acidic chemical >
Coloring > Baking > Grinding spilled enamel > Soldering
attachment > Polishing > 2nd cleaning
by ultrasonic water > Plating > Packaging
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