A mixed gas is any combination of two or more components and a diversified product developed for specific industry applications.
The mixed gas of different components is applied to different industries, for example, the food mixed gas replaces the original air in the package with a protective mixed gas, and the shelf life of the packaged food can be prolonged. By using different mixed gases, the characteristics of beverages such as wine, beer, and soft drinks can be improved. In the manufacturing process, various types of mixed gases are widely used in the fields of welding and laser processing. The mixed gas can be continuously mixed with a single gas in the field, or it can be pre-charged into a cylinder package of different specifications.
Welding protective gas
Welding gas directly affects the welding process of various gas shielded welding (GMA), including the effects of welding (arc, splash, penetration, soot, etc.), speed and efficiency. These effects are caused by the physical and chemical properties of the selected gas.
For gas shielded welding (GMA), the two main parameters are wire feed speed (WFS) and voltage. The setting of the parameters and the choice of welding gas will result in different arc types. Whether it is large particles or jets, with or without short-circuit conditions, these types of arcs can reflect the characteristics of material transition. For example, the use of spray arc welding of medium and heavy plate materials of more than 3 mm, using the CORGON® series of shielding gas to produce very little splash, the wire feed speed of > 7m / min. With the CORGON® shielding gas, the splash will drop to 2.5 to 5% of the total wire metal due to the low-splash jet arc. At the same time, CORGON®18 will produce a flat weld bead and reduce the residual height.
Laser gas mixture
Gas lasers (such as carbon dioxide or excimer lasers) require a mixture of gases to generate a laser beam. Different laser types have different mixing ratios. The purity of these mixtures is important to ensure optimum performance, efficiency and high return on investment.
The high-purity laser gas supplied in the cylinder does not guarantee the same quality of the laser mixture in the cavity. Gas supply systems and operators must be able to properly handle high purity laser gases to maintain the highest levels of purity.
There are usually two types of lasers used for material processing: gas lasers and solid state lasers. Carbon dioxide and excimer lasers are commonly used gas lasers. Carbon dioxide lasers are most commonly used for laser cutting, and a laser medium is a mixture of carbon dioxide as an active component. Excimer lasers are best suited for surface treatment applications and micromachining. The excimer mixture consists of a rare gas/halogen. An excimer (excited dimer) refers to a short-lived molecule that combines a halogen atom and an inert gas atom in an electronically excited state. In the excited state, they form a metastable complex (excimer).
As the name suggests, gas lasers require a gas to generate a laser beam. Carbon dioxide lasers are the most common of these, using carbon dioxide as the active laser medium. The laser mixture contains not only carbon dioxide but also other components such as helium and nitrogen. Depending on the type of laser, it may be necessary to mix a small amount of other gases (such as oxygen, carbon monoxide, hydrogen or helium) in the mixture.
Certain impurities in the laser mixture may affect the performance of the carbon dioxide laser, resulting in discharge instability, deposits on the mirror, and loss of laser power. The laser manufacturer defines LASERLINE® gas purity, which has a very large effect on water vapor and hydrocarbon impurities. Even at very low concentrations (less than 10 ppm), oxygen impurities will be produced at high levels (more than 100 ppm). Significantly affected, the most likely sources of impurities are gas cylinder replacement, gas lines and pressure reducers.
Special application mixture
For a wide range of complex and professional special processing and scientific research applications, we can provide a variety of process engineering mixtures (heat treatment mixture (hydrogen / nitrogen), leak test mixture (helium / nitrogen), and diving breathing gas, etc.) A variety of standard or custom calibration mixtures. In particular, our HiQ series not only contains high-quality gases, but also provides sophisticated gas system engineering solutions and quality services to ensure high-precision gas demand for all types of customers.
Mixing gas application:
l welding
l Laser
l Special application
l Heat treatment annealing, brazing Hydroflex
l Heat treatment powder metallurgy Sinterflex
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