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US 6,669,898 B2Granted
Preparation of articles using metal injection molding
AssigneeRA Brands, L.L.C.
InventorsStephen H Gressel, Matthew M Marley, Maryann Wright
Life of this patent
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Abstract
A process for preparation of molded articles, such as golf club heads, by metal injection molding and the resulting product.
Claims11
A process for preparing a sintered molded article having a density of about from 7.5 to 16.5 grams/cubic centimeters comprising:
- a. admixing a feedstock comprising metal powder and binder wherein the metal powder comprises at least one stainless steel and about from 10% to 90% by weight of the metal powder of at least one tungsten alloy, wherein the tungsten alloy comprises iron, nickel and copper;
- b. molding the feedstock into an unsintered form;
- c. removing the binder;
- and
- d. sintering the unsintered form for at a time and a temperature sufficient to densify the molded article to at least about 95% of the theoretical density of the metal.
2 more elements
Dependencies are inferred from the claim text.