Process for producing metallic component and structural member

Details Process for producing metallic component and structural member Process for producing metallic component and structural member

B - Operations, Transporting

24

C

B24C 1/10 (2006.01)

Patent

CA 2649014

A process for metallic member production including the shot peening of a surface of a metallic material, in which iron adherent to the metallic-material surface is efficiently removed almost without causing the metallic material to suffer a dimensional change or surface shape roughening, and which imparts improved fatigue properties to a metallic member to be produced. A surface of a metallic material comprising a light alloy is bombarded with first particles having an average particle diameter of 0.1-5 mm and comprising iron as the main component. Successively, the surface of the metallic material is bombarded with second particles having an average particle diameter of 200 µm or smaller and containing substantially no iron.

L'invention concerne un processus pour la production d'un élément métallique comprenant le grenaillage d'une surface d'un matériau métallique, dans lequel du fer adhérent à la surface du matériau métallique est efficacement éliminé presque sans amener le matériau métallique à subir un changement bidimensionnel ou une rugosification de forme de surface, et qui communique des propriétés de fatigue améliorées à un élément métallique à produire. Une surface d'un matériau métallique comprenant un alliage léger est bombardée avec des premières particules ayant un diamètre moyen de particule de 0,1 à 5 mm et comprenant du fer comme composant principal. Ensuite, la surface du matériau métallique est bombardée avec des secondes particules ayant un diamètre moyen de particule de 200 µm ou moins et ne contenant sensiblement pas de fer.

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