Back to results
US 5,308,409 AGranted
Method of strengthening aluminum castings in a specified local part
AssigneeIsuzu Motor Limited
InventorsTadashi Kamimura, Akira Tsujimura
Life of this patent
Estimating the term…
Abstract
A method of strengthening an aluminum casting by modifying qualities of a specified part thereof comprises the steps of forming a weld overlay on the specified part using powders made of heat resisting element and remelting the specified part, now overlaid with the layer of heat resisting alloy layer, using high density energy.
Claims19
A method of strengthening an aluminum casting, comprising the steps of:
- encapsulating a core particle made from a heat resisting element with particles made from a metal soluble in Al to form a capsule particle;
- applying a first electric arc to a local part of the aluminum casting so as to melt the local part;
- spraying a plurality of capsule particles over the melted local part to form an overlay, the encapsulating particles serving as a binding material between the aluminum casting and the core particle;
- and
- applying a second electric arc of high density energy to the overlaid local part so as to remelt the overlaid local part and form a remelt alloy layer.
2 more elements
A method of strengthening an aluminum casting, comprising the steps of:
- manufacturing a composite wire by filling a sheathing with capsule particles made by encapsulating a core particle made from a heat resisting element with particles made from a metal soluble in A1:
- applying a first electric arc to the specified part of the casting with the composite wire as a consumable electrode, so as to form an overlay on the specified part;
- applying a second electric arc of high density energy to the overlaid specified part so as to remelt the overlaid specified part.
Dependencies are inferred from the claim text.