Method of production of surface densified powder metal components
AssigneeHöganäs AB
InventorsSven Bengtsson, Yang Yu, Martin Svensson
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Abstract
A method for densification of the surface layer of an optionally sintered powder metal component comprising the steps of: decarburizing the surface layer for softening the surface layer of the component; and densifying the surface layer of the component.
Claims11
A method for densification of the surface layer of an optionally sintered carbon containing component prepared from an iron or iron-based powder comprising the steps of:
- decarburizing the surface layer for softening the surface layer of the component;
- and densifying the surface layer of the component by mechanical formnig.
A method for producing powder metal components having high density and densified surface, comprising the steps of;
- sintering a pressed component and decarburizing the surface layer of the component during a part of the sintering procedure for softening the surface layer;
- and densifying the softened surface layer of the component.
A sintered powder metal component of an iron alloy having a carbon-content of 0,3-1,0% in its core and 0,3-1,5%, preferably 0,5-0,9% in its case hardened outer layer.
Dependencies are inferred from the claim text.