Dental & Medical Precision Casting
牙科与医疗器件的精密铸造
标签：牙科铸造, 磷酸盐包埋料, 医疗器械, 3D打印蜡型
牙科铸造用磷酸盐包埋料（耐 1300℃ 以上并补偿合金铸造收缩），蜡型如今多由口内扫描+3D 打印直接成型。金合金铸造温度 950–1050℃，钴铬合金需 1350–1450℃ 并配高频感应与真空加压铸造机。铸圈焙烧分两段：700℃ 保温后再升终温并保温 30–45 min，防止包埋料开裂。骨科植入物原型与手术器械柄同样借失蜡做小批量试制，验证设计后转精密锻造或机加工量产，构成医疗金属件的快速开发通道。
Dental casting uses phosphate-bonded investment (refractory above 1300°C, compensating alloy shrinkage), with patterns now typically 3D-printed directly from intraoral scans. Gold alloys cast at 950–1050°C; cobalt-chrome needs 1350–1450°C with induction melting and vacuum-assist casting machines. Burnout runs in two stages — hold at 700°C, then final temperature for 30–45 min — to keep the ring from cracking. Orthopedic implant prototypes and instrument handles likewise go through small lost-wax batches before moving to precision forging or machining for volume production.