Applications [ Return towards Mechanical engineering industries ]
For all the following processes, Air Liquide has developed a solution based on the application of the gases supplied to its customers
Plasma coating
This process is used in such industries as the automotive (e.g. valves), aeronautics (jet engines), power plant construction (gas turbines), printing (cylinders), pulp and paper (cylinders, knives, etc.), and medical implant supplies, where very high quality and reliability are required.
heating-shrinking
This process consists in heating with a flame very quickly punctually or over a narrow area a sheet or a welded set of pieces. This operation allows to rectify the distortions on the thermally affected zone during the welding cycle.
Atmosphere Zoning Solution
Control of the atmosphere composition, flow rate and pressure in each zone of your continuous, open-ended furnace is a key factor in the quality of your treatment, the economics of your process and the safety of your workforce.
Flame Welding
Flame welding is performed with a welding torch and exclusively with an oxy-acetylen or oxy-crylen (available in some countries) flame.
High Velocity Oxy-Fuel Coating
The High Velocity Oxy-Fuel process is used in various industries such as the aeronautics industry, oil and petroleum equipment, turbines, etc. This process is can be used - depending on the powder properties (ceramics, metals, carbides, self-fluxing powders) - with various fuel gases such as Hydrogen, Acetylene, FLAMAL™, SPRAL™, LPG's or Kerosene. In this last case, the oxygen supply is at a high pressure and flow rate. This process has the advantage of producing a high density and a high coating thickness when using carbon dioxide cooling.
Neutral hardening
The hardening operation involves heating components above their phase transformation temperature and then quenching them in oil or salt baths, or in a specific gas quenching cell. This treatment results in a hard and tough martensitic or bainitic structure inside the components. Such operations can be carried out in a wide range of continuous or batch furnaces.
Plasma Welding
The Plasma welding process is a further development of the TIG welding process.
Laser Cutting
A laser beam is focused on the base metal, and a cutting jet ejects the molten metal. This process is used mainly on thin metals requiring high precision and high productivity.
Wire coating
Thermal coating, wire flame coating - anti-corrosion or wear-resistant coating.
Laser Welding
The laser beam produced by a CO2 or a solid state YAG cavity is used for high penetration, high-speed welding processes, where mainstream processes can not deliver the required distortion and/or productivity.
Gas quenching
Gas quenching is an environmentally friendly alternative solution to oil or salt bath quenching applications. Associated with low pressure processes (carburizing, nitriding, annealing...), gas quenching offers a better control of the distortion and limits post operations such as rectification. Primarly developed for high performance materials (tools, aeronautics, nuclear) gas quenching can be performed with nitrogen, argon, hydrogen or helium, pure or in mixtures, depending upon the material specifications.
TIG Welding
TIG Welding: tungsten inert gas welding or GTAW-gas tungsten arc welding. This process is used when an very high welding quality is required (pressure vessels, piping, food containers, etc.)
Flame Cutting
Flame applications for cutting process use an oxy-fuel flame and straight oxygen as a cutting jet to separate the metal.
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