Isothermal Forging with Heated Dies
等温锻造与加热模具成形
标签：等温锻造, 加热模具, 精密锻件, 温锻
等温锻造把锻模加热至坯料锻造温度（铜合金 650–750 ℃）恒温成形，消除模具激冷导致的表面裂纹与充不满，特别适合薄件与带薄筋的精密铜锻件。模具用 GH 类高温合金或 KCO 耐热钢，靠电阻/感应保温到 ±5 ℃；坯料转移无需赶温。变形抗力比常规模锻低 30–50%，设备吨位可下调一档；模具寿命受氧化影响需通氩保护。
Isothermal forging heats the dies to the billet's forging temperature (650–750 °C for copper alloys) and holds ±5 °C, removing die chill that causes surface cracks and underfill—ideal for thin, tight-tolerance forgings. Dies of heat-resistant superalloy are held by resistance or induction heating; no transfer heat loss. Forming loads drop 30–50%, allowing a smaller press; shield dies with argon to limit oxidation. ---