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US 7,261,550 B2Granted
Metallic workpiece for use in an injection mold
AssigneeCL Schutzrechtsverwaltung GmbH
InventorFrank Herzog
Life of this patent
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Abstract
A metal workpiece is formed of a pre-manufactured lower part and an upper piece which is placed thereon using a metal powder sintering process, preferably laser sintering. The lower part is a partial workpiece which is made of a solid piece of metal shaped by machining, forming a ready-to-use workpiece in conjunction with the upper part.
Claims13
A metallic workpiece, comprising:
- a prefabricated bottom part having a surface;
- and
- a top part applied to said prefabricated bottom part by a process selected from the group consisting of a metal powder sintering process and a metal powder-melting process resulting in a structure selected from the group consisting of sintered structures and melted structures;
- said prefabricated bottom part being a shaped partial workpiece produced from a solid piece of metal by metal-removing machining, metal eroding machining, laser removal of material, or by casting, and together with said top part forming the metallic workpiece ready for use;
- said prefabricated bottom part having at least one cooling passage formed therein, said cooling passage opening out into that part of said surface of said prefabricated bottom part adjoining said top part and continuing in said top part.
2 more elements
Dependencies are inferred from the claim text.