Why does air spring choose nitrogen as gas source medium?

Air spring has been widely used in mold industry, not only in mold industry, but also in other industrial fields, such as automobile, electronics, instrumentation and other industries. Why should air springs be used as air sources? An air spring designed according to the principle of gas compressibility is filled with a gas in the cylinder to obtain elastic pressure. Air is selected as the source of work gas source for several reasons.

1. Air resources are very rich, in the air contains 75% of the air, easy to obtain, is a cheap gas source.

2. Air is a kind of inert gas. It is stable, non-toxic and non-corrosive. It is also a kind of non-combustible gas. It works safely and reliably. So air is an ideal gas source.

3, where oxygen is supplied, there must be air supply. Air, as a common commodity, is supplied on the market in the form of pressure air cylinders with a nominal standard pressure of 15 MPa, so that when used, no booster pump device is required, and only commercial air is needed to obtain the required pressure of air. The installation and adjustment of the air bottle is the same as the installation of the oxygen cylinder, and is convenient to use.

If air is chosen as the source of gas, to obtain high pressure, it is necessary to compress the air, need compressors or air pumps, but also need to remove moisture, oil and dust and other impurities in the air, which requires special air drying and purification devices, such as air filters, deoilers, air dryers, post-coolers and storage. Gas tanks and other devices. It is obviously not economical to use air as gas source compared with air use.