Manufacture of wear resistant composite components

Details Manufacture of wear resistant composite components Manufacture of wear resistant composite components

B - Operations, Transporting

22

D

B22D 19/00 (2006.01) B22F 7/08 (2006.01) E02F 9/28 (2006.01)

Patent

CA 2729051

A method of manufacturing a wear resistant metal component having an outer shell and an inner body has a number of steps. Constituents of a wear-resistant metal alloy are placed within a steel outer shell. The shell is then heated to a point above the melting point of the alloy, and maintained at an elevated temperature for a sufficiently long time period to allow for diffusion of the alloy constituents. The component is then cooled, allowing for bonding of the alloy to the shell. In an alternative embodiment, the relative positions of the steel and the alloy are reversed.

La présente invention porte sur un procédé de fabrication d'un composant métallique résistant à l'usure ayant une coque externe et un corps interne, ledit procédé comportant un certain nombre d'étapes. Des constituants d'un alliage métallique résistant à l'usure sont placés dans une coque externe en acier. La coque est ensuite chauffée à un point au-dessus du point de fusion de l'alliage et maintenue à une température élevée pendant une période de temps suffisamment longue pour permettre la diffusion des constituants de l'alliage. Le composant est ensuite refroidi, ce qui permet la liaison de l'alliage à la coque. Dans un autre mode de réalisation, les positions relatives de l'acier et de l'alliage sont inversées.

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