What is Gas Spring? What are the Benefits?

Instead of classical steel springs and polyurethane springs, systems that provide thrust with gas pressure are called gas springs . The gas spring consists of a movable shaft and sealing elements placed in a closed body, and it contains nitrogen gas. With the increasing needs of the developing mold industry, the need for more serial and long-lasting systems has emerged.
Body:   It is responsible for preserving the nitrogen gas inside. There is a cylindrical bearing on it for the movement of the shaft, and seals and gaskets for sealing on this bearing. It has a wall thickness that can withstand the high pressure that may occur during the compression of the shaft. It is the part that is fixed to the molds and carries the main load. It can continuously self-lubricate with the special oils it contains.

Shaft: It is a cylindrical solid part. It is the element that transfers the gas pressure in the body to the mold as a thrust force. It is manufactured as a precision machined or coated surface. The reason for this is that even the smallest scratch on the shaft causes gas to escape from this point.

Sealing Elements: These are the elements that prevent the gas from escaping during the movement between the shaft and the body. If the working environment is very oily and dusty, they form a gap between the gaskets. This causes gas leakage.

Gas Valve: It is the part where the gas is pressed during the first production. It is also used to add gas in cases where the gas in the spring is discharged during operation. It is one of the parts that are most affected by the working conditions and cause the gas to be discharged.

In terms of operation, nitrogen gas is first introduced into the cylinder until it reaches 150 bar pressure. The gas pressure acts on the shaft and pushes the shaft out until the resulting force is equal to the initial force. When the shaft is pushed into the cylinder, it increases the force by compressing the gas in the chamber and reducing its volume. Gas springs behave just like ordinary mechanical springs, but do not require preloading. Since the cylinders are designed to be sealed, they retain the special oil filled in the assembly during operation. Due to the characteristics of the movable guides and the characteristics of the gaskets used, the rollers do not need to be lubricated by external influence. The highest allowable operating temperature is 70-80°C. As higher temperatures may degrade the characteristics of the seals, we may encounter undesirable results.

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In terms of usage advantages:

gazlı yay faydaları 1 There is a serious reduction in the used area, height and volume.
gazlı yay faydaları 2 Significant reduction in height is achieved for the same working length. It provides more compact formwork construction.
gazlı yay faydaları 3 There is no spring setting process. No pre-installation required.
gazlı yay faydaları 4 Always the same force at each contact point. Force distribution is balanced and transmitted to the desired point. Pressure control system monitoring is possible.
gazlı yay faydaları 5 It reduces the scrap rate by enabling controlled part production in forming and plastering operations.
gazlı yay faydaları 6 It is ensured and guaranteed that the desired force and the actual force in the application are the same. The same gas spring can be reused in different applications.

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