Applications [ Return towards Automotive, Aeronautics & Transport]

During carburizing (carbonitriding) operations, carbon (and nitrogen) is brought to the surface of steel components and diffuses to produce a hard martensitic surface layer after quenching.Traditionally, the carbon comes from a hydrocarbon (natural gas or propane), partly oxidized in an endogas generator to produce a CO/H2 atmosphere. For nitriding, the N agent comes from ammonia cracking at the surface. Nitrogen accelerates the diffusion of carbon into the treated parts.

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.

Your application involves hardfacing pieces as moulds. And you use manual powder guns with oxy-acetylene flame process.

The Plasma welding process is a further development of the TIG welding process.

Do you need to improve the adhesive properties of your plastic products for excellent lacquering, printing or bonding results? Do your plastic or rubber products require a low permeation rate of hydrocarbons or other chemicals? Would you like to provide your plastic products with excellent chemical resistance? Do you need to control emissions of your plastic containers? Would you like to make your plastic products hydrophilic or even more hydrophobic? Would you like to take advantage of rubber with reduced friction coefficient?

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.)

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.

Flame welding is performed with a welding torch and exclusively with an oxy-acetylen or oxy-crylen (available in some countries) flame.

Stainless steels, carbon steels and non-ferrous materials are annealed to trigger the relaxation of internal stresses and give a softer product. Annealing can be achieved in many types of batch or continuous furnaces at temperatures below their phase transformation temperature.

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.