1. Hammer Forging
In general, hammer forging is accomplished between two flat moulds or section moulds without moulding chamber. The tool utilized in hammer forging has simple shap, high flexibility, short manufacturing cycle and low cost. Nonetheless, the labor intensity is high, the operation is tough, the productivity is low. And the forging quality is inadequate. The processing allowance is substantial. Therefore, it is only applicable in a few instances where the product’s performance has no specific criteria.
2. Open-die Forging
3. Closed-die Forging
During closed die forging, no transverse burrs are formed perpendicular to the direction of die motion. The chamber of closed die has two functions: shaping and guiding the blank.