Cermet and/or ceramic multi-coloured article and method for manufacturing same
AssigneeComadur SA
InventorsMaryline LAMBERT OBERSON, Arnaud ACTIS-DATTA, Bruno BESUTTI, Alexandre NETUSCHILL
Life of this patent
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Abstract
A cermet and/or ceramic multi-coloured article, and in particular a bezel (1) of a timepiece, produced by a method for compressing at least two materials (2, 3) of distinct colours, the article including a relief decoration (8) of a different colour from the rest of the article, the decoration (8) being produced by laser ablation on one of the materials (3) after compression of the two materials (2, 3).
Claims10
A method for manufacturing by compression a cermet and/or ceramic multi-coloured article with a relief decoration (8), said method comprising the following steps:
- providing at least a first material (2) and a second material (3), said first material (2) being distinguished from the second material (3) by its colour, said first (2) and second (3) materials being either a ceramic or a cermet;
- providing at least one compression tool with a first compression tool (5) and optionally a second compression tool (6);
- filling and compressing the first material (2) within the first compression tool (5);
- filling and compressing the second material (3) on the first material (2) within the first compression tool (5) or within the second compression tool (6) to obtain a green body (7);
- sintering the green body (7) to form a blank (9);
- machining, by laser ablation, the second material (3) on the green body (7) or on the blank (9) to produce the relief decoration (8), said second material (3) being hollowed, by laser ablation, at least to the first material (2) to reveal said first material (2) and obtain the relief decoration (8) in said second material (3) standing on the first material (2);
- and
- finishing the blank (9) to obtain the article.
Dependencies are inferred from the claim text.