Die Lubrication & Glass Coating
锻模润滑与玻璃防护涂层
标签：模具润滑, 玻璃涂层, 摩擦系数, 模具寿命
热锻铜合金模锻推荐石墨水基润滑剂（浓度 5–10%，喷涂 0.1–0.2 mm 干膜），摩擦系数可降到 0.1–0.15，模具寿命从 8000 提到 20000 次以上。精密件改用玻璃防护涂层：坯料加热前浸涂硼硅酸盐玻璃浆并烘干（膜厚 0.1–0.15 mm），兼具防氧化与隔热，锻后碱洗去除。注意石墨残留影响后续焊接与电镀，锻后需碱水超声清洗。
For hot die forging of copper alloys use water-based graphite (5–10% solids, 0.1–0.2 mm dry film): friction drops to 0.1–0.15 and die life extends from 8,000 to 20,000+ blows. For precision parts use glass coatings: dip billets in borosilicate slurry and dry (0.1–0.15 mm film) for oxidation protection plus insulation; remove in an alkaline wash after forging. Graphite residue interferes with welding and plating—ultrasonic alkaline cleaning is required.