Lost-foam (Full-mold) Pouring Parameters
消失模实型浇注参数与白模密度
标签：消失模, 泡沫模样, 实型铸造, EPS
消失模用 EPS/STMMA 泡沫模样埋入干砂振动紧实后直接浇注，铜液前沿气化白模并维持负压（–0.03～–0.05 MPa）充型。关键参数：白模密度 18–25 g/L（过高积碳、过低变形），浇温比砂型高 30–50 ℃（黄铜 1000–1050 ℃），涂层透气性决定充型速度。适合艺术雕塑批量复制；表面会保留细小珠粒橘皮纹，需抛光或有意保留作肌理。
Lost-foam pours directly into dry sand around an EPS/STMMA pattern under vacuum (–0.03 to –0.05 MPa) as the metal front vaporizes the foam. Key parameters: pattern density 18–25 g/L (higher causes carbon deposits, lower distorts), pouring temperature 30–50 °C above green sand (brass at 1000–1050 °C), and coating permeability controls fill rate. Great for art reproduction; expect fine bead orange-peel texture—polish it out or keep it as a designed surface. ---