Nitrogen gas springs are elastic components that use high-pressure nitrogen gas as the working medium. They are widely used in the industrial production, especially in the mold industry, where they can provide elastic pressure for various mold actions, such as ejection, return, cushioning, stripping, etc. However, in order to ensure their normal work and performance, they also need to exhaust the excess nitrogen gas from time to time.
Exhausting nitrogen gas springs for dies is a process of releasing the nitrogen gas from the cylinder through a valve or a screw hole. This can reduce the internal pressure and adjust the elastic force of the nitrogen gas springs. Exhausting can also prevent the nitrogen gas from leaking or exploding due to overpressure or damage.
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There are different methods of exhausting nitrogen gas springs for dies, depending on their design and structure. Some common methods are:
Using the Bottom Screw Hole or a Suitable Mounting Flange
The first method is to use the bottom screw hole or a suitable mounting flange to fix the nitrogen gas spring in the mold. Then, use a special tool or a wrench to open the valve or the screw hole on the side of the base, and let the nitrogen gas escape slowly until the desired pressure is reached. This method is suitable for adjusting the elastic force of the nitrogen gas spring according to the mold requirements.
Avoiding Using the Screw Hole on the Top of the Piston Rod
The second method is to avoid using the screw hole on the top of the piston rod for exhausting, as this screw hole is not designed for that purpose. It is actually used for maintenance, such as filling or releasing nitrogen gas. Using this screw hole for exhausting may damage the piston rod or cause leakage of nitrogen gas.
Avoiding Free Air Return Installation Method
The third method is to avoid letting the nitrogen gas spring return freely in the air after being compressed. This may cause damage to the internal structure of the nitrogen gas spring, such as the seal ring or the valve. It may also reduce the elastic force and life span of the nitrogen gas spring.
Disposing of Waste Nitrogen Gas Springs
The fourth method is to dispose of waste nitrogen gas springs that are no longer needed or usable. In this case, it is necessary to completely empty the cylinder of nitrogen gas by using a special tool or a wrench to open the valve or the screw hole on the top of the piston rod, and let the nitrogen gas escape quickly. This can prevent environmental pollution and safety hazards caused by residual nitrogen gas.
Exhausting nitrogen gas springs for dies is an important operation that should be done carefully and correctly. It is recommended to follow the instructions and precautions provided by the manufacturer or supplier of the nitrogen gas springs. Some general precautions are:
- Do not exhaust under load conditions, as it may damage or explode the nitrogen gas springs.
- Do not exhaust too fast or too much, as it may cause instability or malfunction of the nitrogen gas springs.
- Do not expose the nitrogen gas springs to high temperature or direct sunlight after exhausting, as it may cause deformation or discoloration.
- Do not use compressed air to fill or exhaust the nitrogen gas springs, as it may cause moisture or dust to enter the cylinder.
The above is the content shared by Gunri Mold. We hope it can help you. Our company mainly deals with various industrial springs such as nitrogen gas spring, mold spring and disc spring. If you need them, please contact us.
