The metal alloys used in foundry underpressure are the following:
Hot forging is the shaping of a piece of metal carried at a suitable temperature and plastically deformed between two dies in which the impression of the desired part has been cut, close to the finished product considerably reducing the machining work
This deformation is effected by creeping the metal between the die and the punch, this transformation allows very large displacements of metal, refines the starting metallurgical grain, causes strain hardening, creates a favorable linear drawing by considerably improving the mechanical characteristics of the metal. piece.
The base metal is generally a bar of round or profiled section, scored by sawing in order to have the volume of the piece increased by an excess to guarantee the complete filling of the shape and create a burr which will be eliminated by cutting.
|Material||Resistance corrosion||Welding||Riveting||Sealing||Machining||Deformation||Surface treatment||Other|
Aptitudes : A = Excellent, B = Good, C = Fair, D = Bad
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