Welding related processes

• Brazing and soldering

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• Flame heating

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• Gouging

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• Thermal spraying

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• Flame straightening

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• Flame cleaning

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Brazing and soldering

In both brazing and soldering, the solder is added in between the surfaces to be joined through capillary action. In soldering the working temperature is below 450 °C and it is suited for welding copper and copper alloys, zinc, steel aluminium and aluminium alloys. In brazing, the working temperature is between 450 °C–1000 °C and well-suited for most metals.

Brazing is used, for example, for welding copper pipes in the production of bathroom fixtures and for fastening pieces of hard metal to saw blades and drill bits. Soldering provides joints of high quality and high surface finish. Soldering does not involve the same high working temperature as welding, which gives rise to less problems with deformations.