| 摘要 |
A method of goldplating on the outer surface of a silver line used for accessory including the steps of thinning a gold ingot by rolling to about 0.5mm in a plate shape; winding the thin gold plate on the silver bar in which bubbles are removed and heated to 700 to 800 deg.C.; reheating the gold plate by 500 to 600 deg.C. and making the outer surface of the silver bar closely contact the inside of the gold tube; and repeatedly stretching them to a desired thickness in a drawing machine.
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