阅读说明：本技术 用于钟表或首饰件的外部零件 (External part for a timepiece or piece of jewellery ) 是由 帕特里克·加斯曼 彼得·格施温德 艾伦·伯雷 于 2020-03-20 设计创作，主要内容包括：本发明涉及一种用于制造由穆拉诺玻璃制成的用于钟表或首饰件的外部零件的方法,所述方法包括以下步骤：提供由并排布置的玻璃棒(2),也被称为玻璃管,形成的材料；多循环热处理以使材料固结并且形成坯件；机械加工坯件以产生外部零件,所述方法的特征在于热处理包括第一循环(a),该第一循环(a)在于以在4℃/min和12℃/min之间的加热速率将材料从小于或等于100℃的温度加热至在450℃和650℃之间的温度,以便避免在坯件的制造期间气泡的形成。本发明还涉及具有很少或没有气泡的结构的用于钟表或首饰件的外部零件,特别是表壳。(The invention relates to a method for producing an external part made of Murano glass for a timepiece or piece of jewellery, comprising the following steps: providing a material formed by glass rods (2) arranged side by side, also called glass tubes; multi-cycle heat treatment to consolidate the material and form a blank; machining the blank to produce the external part, said method being characterized in that the heat treatment comprises a first cycle (a) consisting in heating the material from a temperature of less than or equal to 100 ℃ to a temperature of between 450 ℃ and 650 ℃ at a heating rate of between 4 ℃/min and 12 ℃/min, in order to avoid the formation of bubbles during the manufacture of the blank. The invention also relates to an external part for a timepiece or piece of jewellery, in particular a watch case, having a structure with few or no air bubbles.)