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US 4,048,459 AGranted
Method of and means for making a metalic bond to powdered metal parts
AssigneeCaterpillar Tractor Co.
InventorMichael Earle
Life of this patent
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Abstract
A method of and means for making metallic bonds to powdered metal parts by brazing techniques is disclosed in which the braze material is heated to brazing temperature by a laser beam. Techniques for insuring a reliable bond without excessive absorption of braze material by the powdered metal parts are described.
Claims6
The method of making a metallic bond between a powdered metal part and a second part comprising the steps of:
- a. positioning said powdered metal part in selected close spaced juxtaposition to said second part to provide a given space therebetween;
- b. introducing brazing metal powder which melts at a lower temperature than said powdered metal part and said second part into said given space between said parts at a given time rate;
- and
- c. impinging a beam of coherent electromagnetic energy on said brazing metal powder in said space, said beam being fully received within said space to fully melt said brazing metal powder at said given time rate and of such intensity and for such duration whereby deleterious brazing metal powder absorption by said powdered metal part is substantially minimized.
1 more element
Dependencies are inferred from the claim text.