With the widespread application of bending machines in engineering machinery products, in order to meet the requirements of product quality and production, its quality standards have gradually improved. This machine can use the equipped general-purpose molds (or special molds) to bend metal plates into various required geometric cross-sectional shapes of workpieces under cold conditions. The rationality of the bending process directly affects the product's forming size and appearance. Through the control and prevention of bending defect processes, and by adopting effective process methods to improve the quality of workpieces.

General hydraulic bending machines adopt an all-steel welded structure, and vibration aging treatment eliminates internal stress, with good stability. Moreover, it integrates a hydraulic system, with slider transmission, a large speed adjustment range, stable and reliable operation, and the slider stroke adjustment mechanism is separate from the cylinder assembly, improving sealing performance.

The following points should be noted when operating a hydraulic bending machine:

1. In this process, after the pressure defect, the descent is automatically stopped; in the process of pressure or a significant increase, it slows down and cannot descend or ascend.

2. Automatic stop pressure; adding is normal, not rapid descent, but the normal pressure of the product.

3. When high and low pressure products. Sometimes it is normally half, sometimes it is abnormally half. But when the middle is normal, both sides are abnormal. The normal on both sides, the abnormal in the middle.

Sharing some emergency solutions for hydraulic bending machine failures:

1. Check whether the electromagnetic coil of the mold overflow valve of the hydraulic bending machine is energized, and whether the electromagnetic coil voltage meets the requirements. If it is the above reasons, please check the relevant electrical reasons.

2. Check whether the cartridge valve is stuck or the main valve core is stuck, and whether the damping small hole is blocked. If it is the above reasons, please disassemble the mold overflow valve of the hydraulic bending machine, clean it, and reinstall it.

3. Three-phase power phase adjustment, causing the motor to rotate backward.

4. Check whether the oil level in the hydraulic bending machine mold oil tank is too low, whether the filling port is not submerged, and whether the rapid feed causes the insufficient filling of the oil cylinder upper cavity. If the above reasons are present, add oil to the oil tank above the filling port by 5mm or more to submerge the filling hole.

5. Check whether the rapid feed speed is too fast, causing insufficient filling. If it is the above reason, the rapid feed speed can be reduced by modifying the hydraulic bending machine mold system parameters.

6. Check whether the hydraulic bending machine mold filling valve is open. If it is due to oil pollution, causing the valve core of the filling valve to move unresponsively and be stuck, resulting in insufficient filling. The hydraulic bending machine mold filling valve needs to be cleaned and reinstalled to make the valve core move smoothly.