| 摘要 |
PURPOSE:To manufacture on ornamental material of novel design by putting mosaically noble-metla material pieces having difference in melting point on the surface of a noble-metal base material and by heating the base material into semimolten state. CONSTITUTION:The surface of the sheet-like or bar-shaped base material 1 consisting of a noble metal such as Au, etc., or a noble-metal alloy is inlayed with the noble-metal material pieces 2 such as Pt, etc., having difference in melting point as compared with the base material 1 and different in color tone into the mosaic condition of required design. This material is heated by means of a torch burner, etc., up to a temp. right under the melting point where the base material 1 is formed into semimolten state, so that noble-metal material pieces 2 are diffused into the base material 1. In this way, a mosaic cladding material for ornamental and personal-ornament material can be manufactured with high operability.
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