Helium is colourless, odourless, non-toxic, non-corrosive and non-combustible. With a value of 4.2 degrees Kelvin or –269 °C, it has the lowest boiling point of any gas and as a result, liquid helium is the coldest matter on Earth. This is what makes it ideally suited to be used as cryogen in a number of cutting edge applications including superconductivity in magnetic resonance imaging (MRI), nuclear magnetic resonance (NMR), particle physics and other cryogenic applications.
The choice of shielding gas is important as well as the choice of adding materials, equipment and high qualification of welder. The right choice of shielding gas determines mechanical properties as well as a form of weld, spatters and slag at welding. We offer you certified shielding welding mixtures CORGON®. It is mixtures on the basis of argon, which are developed for obtaining significantly better results in comparison with welding in pure carbon dioxide.
The basic component of this mixture is argon, to which is added required quantity (%) of one or several additives. It is usually hydrogen (additional symbol is H%, helium (He%), oxygen (S%) or carbon dioxide (C%). FORMING GAS (90% of nitrogen + 10% of hydrogen) is also belongs to this group. The choice of mixture type depends on welding task. Generally, VARIGON® mixtures are used in order to improve quality and increase welding speed. Such kind of mixture is usually expensive. The main VARIGON® application is MIG-MAG welding and TIG welding of important constructions made of stainless steel, aluminium alloys, etc.
is an inorganic, colorless, odorless, non-flammable, extremely potent greenhouse gas which is an excellent electrical insulator. SF 6 has an octahedral geometry, consisting of six fluorine atoms attached to a central sulfur atom. It is a hypervalent molecule. Typical for a nonpolar gas, it is poorly soluble in water but soluble in nonpolar organic solvents. It is generally transported as a liquefied compressed gas. It has a density of 6.12 g/L at sea level conditions, which is considerably higher than the density of air
Oxygen is used to speed up chemical reactions in the different branches of the chemical industry and metallurgy. It is used for intensification of chemical processes in many industries. Oxygen used to obtain high temperatures, for which various combustible gases (hydrogen, acetylene) is burned in special burners. Also, oxygen is used in medicine.
Nitrogen gas is used to create an inert atmosphere during production, storage and transportation of easily oxidized products; Processing at high temperature processes metals that do not interact with gaseous nitrogen; for the preservation of closed metallic vessels and pipelines, as well as for other purposes