How to Handle Sudden Unloading of Forging Press?

The sudden loss of load in a forging press refers to the phenomenon where, during operations such as piercing, dropping, trimming, and cold-breaking steel billets, the forging press experiences an abrupt reduction or disappearance of material deformation resistance, leading to a sudden loss of load. This often causes significant impact vibrations in the single-column forging press, which can, in severe cases, cause the ground bolt to be pulled apart or even result in the breaking of the beam and damage to the foundation. So, how can the loss of load in a forging press be resolved?

The elastic storage capacity of liquid storage is proportional to the height of the liquid in the working cylinder. Therefore, by thickening the pad between the workbench and the lower mold of the forging press, the travel of the moving beam can be elevated, thereby reducing the height of the liquid in the working cylinder.

2. An alternative method of releasing energy is to rapidly bypass a portion of the high-pressure fluid within the working cylinder at the moment of sudden unloading of the forging press. This reduces the energy to be released. This approach is more effective when the liquid pressure is high, but it requires a higher sensitivity of the corresponding electro-hydraulic control valves. Additionally, it should not cause significant vibration in the bypass pipeline.

3. Absorbing energy to dampen vibration: Under the forging press, without setting a buffer pad, adjust to when the material is about to be cut. At the moment of cutting, the moving part contacts the buffer pad, thereby dissipating the energy in the compression of the buffer pad.

4. Forge Press Manufacturer Introduces: Basic isolation is achieved by setting vibration isolators between the forging press and the foundation, utilizing the elasticity and damping of the isolators to absorb and dissipate energy, thereby achieving the purpose of vibration reduction and isolation. Suitable elastic elements for hydraulic presses include butterfly springs, leaf springs, and air springs, etc.