Cast Copper–Glass Composites
铜与玻璃的铸嵌结合工艺
标签：铜玻璃结合, 铸嵌, 热膨胀匹配, 灯具
铜与玻璃常用「铸铜嵌玻璃」结合：先铸出带凹槽或镂空的铜框（硅青铜或 T2，槽内留 1–2 mm 玻璃收缩间隙），再将加热至 750–850℃ 的玻璃（钾钙或铅玻璃）浇入或热压入槽，随炉缓冷退火消除应力。设计师 Tom Dixon 的灯具系列即采用类似工法。关键在热膨胀系数匹配（铜约 17×10⁻⁶/K，选 9–11×10⁻⁶/K 的玻璃并以机械扣锁为主），接口打胶密封防冷凝水引起的缝隙腐蚀。
Copper and glass combine by cast-and-set: first cast a copper frame with recesses or openwork (silicon bronze or T2, allowing 1–2 mm glass shrinkage clearance), then pour or press hot glass (potash-lime or lead glass) at 750–850°C into the seat and anneal slowly to relieve stress. Designers such as Tom Dixon use related methods in lighting. The key is expansion matching (copper ~17×10⁻⁶/K; choose glass at 9–11×10⁻⁶/K and rely mainly on mechanical interlock), with gasketed joints to stop condensation-driven crevice corrosion.