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US 7,922,563 B2Granted
Cutting blade hard-facing method and apparatus
AssigneeBlount, Inc.
InventorRobert Freyvogel
Life of this patent
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Abstract
A hard-faced cutting blade and hard-facing method is provided. A hard-facing material is applied to a cutting edge of a cutting blade such that a heat-affected transition zone may be created between the base metal and the hard-facing material. The heat-affected transition zone may create a sufficient bond to help resist delamination and flaking of the hard-facing material from the base metal.
Claims8
A method for bonding hard-facing material to a surface of a cutting blade, comprising:
- providing a cutting blade having a surface, wherein the surface comprises a metal;
- providing a source of hard-facing material;
- passing a current through the source of the hard-facing material to the cutting blade, the current forming an arc between the surface of the cutting blade and the source of the hard-facing material;
- and
- depositing the hard-facing material onto the surface of the cutting blade, wherein said depositing comprises mixing molecules from the hard-facing material with molecules from the surface along a heat-affected transition zone disposed between the surface and the hard-facing material, the heat-affected transition zone having an average thickness greater than about 5 micrometers.
2 more elements
Dependencies are inferred from the claim text.