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revised: Customer process cladding in the Welding & Cutting sector

Cladding

Change of surface properties

PROCESS DESCRIPTION

The aim of coating construction components is to create surface properties that the base material does not have. Important characteristics include:

  • Corrosion resistance
  • Wear resistance
  • Thermal or electrical resistance or conductivity
  • Optical properties

Often it is metals that are coated. Here methods are used whose principles of operation are known from joining technology, such as:

  • Soldering
  • Electric arc welding
  • Shield gas welding,
  • Plasma-powder welding

For heat sensitive or non-metallic components special processes have been developed, such as:

  • Thermal spraying
  • Vacuum-coating
  • Electro- or immersion bath-galvanisation
  • Chrome plating

revised: Application technology cladding in the Welding & Cutting sector

Cladding

Change of surface properties

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Overview of the gases for welding

WELDING GASES

MAG, MIG, TIG and forming gases

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null Equipment Regulators Single and Double Stage

Depending on the application, certain requirements apply to the stability of the working pressure (outlet pressure) and thus what type of pressure regulator should be used. During gas withdrawal with regulators, the pressure in the gas cylinder drops. This pressure change has an influence on the force equilibrium in the cylinder pressure regulator. If no manual correction is made via the adjusting screw of the pressure regulator, the outlet pressure increases slightly during withdrawal. By means of a compensated main valve or exact technology, it is possible to counteract this often disturbing effect in single stage regulators.

The use of two stage regulators is recommended for high requirements on pressure stability as well as low outlet pressures. In such pressure regulators, a first stage reduces the inlet pressure to a preset intermediate pressure, for instance 20 bar. The required outlet pressure is set manually by a second stage. In this way, two stage regulators exhibit a practically stable outlet pressure. All regulators are equipped with relief valves to protect the connected equipment and two pressure gauges indicating the cylinder and outlet pressure.