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US 9,539,641 B2Granted
Method of closing a bore
AssigneeMiba Sinter Austria GmbH
InventorsRick Ellingsworth, Paul Tacke, Gerold Stetina
Life of this patent
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Abstract
The invention relates to a method of closing a bore (3) in a metal sintered component (2), whereby, prior to sintering a preform (1) to obtain the sintered component (2) or before a step of calibrating the sintered component (2), a closing body (5) is pushed into the bore (3), and the closing body (3) has an external diameter that is either of an identical size to or at least partially larger than the internal diameter (9) of the bore (3).
Claims7
A method of closing a bore in a metal sintered component, comprising the following steps:
- forming a green compact with a bore,
- sintering the green compact to form a sintered component with a bore, and
- press-fitting a closing body into the bore after sintering the green compact and subsequently calibrating the sintered component using a calibrating device to further press the bore around the closing body,
- wherein the closing body has an external diameter equal to or larger than the internal diameter of the bore
- wherein:
- (1) the closing body is made from a metal solid material or
- (2) the sintered component is made from a first sintered metal powder and the closing body is made from a second sintered metal powder, and
- wherein the bore is part of a fluid channel within the sintered component having a change in direction.
5 more elements
Dependencies are inferred from the claim text.