How is the Pressure of Nitrogen Gas Springs for Dies Selected?
Nitrogen gas springs are essential accessories in dies, which can provide stable elasticity and cushioning effects, ensuring the normal operation of dies and the quality of products. But how to choose the appropriate pressure of nitrogen gas springs for dies? This article will introduce you from the following aspects:
Stamping Force
Stamping force is the basic basis for choosing the pressure of nitrogen gas springs for dies. It refers to the reaction force generated by the workpiece on the die during the stamping process. According to the calculated stamping force, you can determine the number, model, and pressure of each nitrogen gas spring for dies. Generally speaking, you should choose the pressure of nitrogen gas springs for dies by adding 15%-20% to the calculated stamping force, which is more in line with the actual situation.
Other Factors
In addition to stamping force, there are some other factors that also affect the pressure selection of nitrogen gas springs for dies, such as:
- Die wear: When the die wears out, there will be changes in clearance, blade edge dullness and other process parameters, resulting in inconsistency of die thickness and die material deformation resistance, which will cause changes in workpiece deformation resistance. Therefore, there should be some margin in the design to cope with possible situations.
- Nitrogen loss: During inflation and use, high-pressure nitrogen will inevitably have some throttling loss and leakage, causing the pressure to drop. Therefore, this factor should be considered when choosing, to ensure that nitrogen gas springs for dies can maintain sufficient pressure during use.
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