10L159mm ISO Tped Seamless Steel Portable Mixed Gas Cylinder

1. Application in the welding industry Nitrogen-hydrogen mixed gas is one of the commonly used mixed shielding gases in the welding industry. The stable nature of nitrogen and the weak reducing effect of hydrogen have an excellent auxiliary effect on the formation of welds, and are also effective for bubble production. It has a considerable inhibition effect and has a good effect in the field of welding.

2. Application in the steelmaking industry The mixed gas of 5% hydrogen + 95% nitrogen is a safe non-combustible gas. This is a standard reducing protective gas for steelmaking, so it is easy to buy mixed gas . picture

3. Application in the production process of electronic devices In the production process of electronic devices, in order to reduce power consumption and cost, various mixed gases are being developed and used. Among them, nitrogen-hydrogen mixture is the most used. The way to obtain nitrogen-oxygen mixture by vaporizing liquid hydrogen and liquid nitrogen is because the process of vaporization after liquefaction is selected, so its investment and cost are relatively high. The cost of obtaining liquid hydrogen and liquid nitrogen from the by-products of large complexes is several times higher than that of hydrogen and chlorine obtained from electrolysis of hydrogen and "air separation" nitrogen. The nitrogen-oxygen mixture obtained from the decomposition of liquid ammonia, because of the different sources of liquid nitrogen, most of them are of poor quality, and still contain impurities such as undecomposed ammonia, water and oxygen. In addition, liquid nitrogen mostly comes from chemical fertilizer plants, and the supply is serious, so the cost is also high.

4. Hydrogen-nitrogen mixed gas leak detection technology is a kind of leak detection using a mixture of 5% hydrogen and 95% nitrogen as a tracer gas, which is called hydrogen-nitrogen mixed gas leak detection method, or hydrogen gas leak detection method. The mixed gas of 5% hydrogen and 95% nitrogen is non-flammable, non-toxic and corrosive, and will not have adverse effects on equipment and the environment. As a tracer element used in leak detection, hydrogen has many unique advantages. The molecular weight of hydrogen is similar to that of helium. It is the smallest and lightest element among all chemical elements. It has good diffusivity, strong escape property, and low adsorption and viscosity. Since hydrogen molecules move faster than other molecules, using safe low-concentration hydrogen as a tracer gas can have faster response speed and better leak detection accuracy. The basic working principle is to use the newly developed hydrogen sensor, which adopts the working principle of combining catalytic reaction and thermoelectric conversion function, and converts the voltage generated by the element itself into a signal, which not only increases the detectable concentration range, but also is not easily affected by the external temperature. Impact. The newly developed thermoelectric hydrogen sensor consists of a thermoelectric conversion film and a platinum catalyst film formed on its surface. The local temperature difference caused by the heating reaction between hydrogen and the catalyst is converted into a voltage signal by the thermoelectric conversion film. As long as high-performance pyroelectric materials are used, a signal sufficient to complete the detection task can be obtained. The hydrogen leak detection method only has a response signal to its leaking gas hydrogen, but has no response to other gases, which belongs to the unique leak detection method. Once there is a signal response, it means that hydrogen gas enters the tested object through the leak hole, thus indicating the position and size of the leak hole.