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US 10,471,530 B2Granted
Brazed component and method of forming a brazed joint therein
AssigneeGKN Sinter Metals, LLC
InventorsJeffrey W. Lemke, Ian W. Donaldson, John D. Gurosik
Life of this patent
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Abstract
A brazed part includes two or more components that are brazed together and has related method of making. Using a method of locating parts relative to one another, an inter-component gap between the components may be formed. Subsequently, during brazing, flow control features formed along the inter-component gap may then be used to assist in the retention of the braze material between the components during brazing.
Claims15
A brazed part including a first component and a second component brazed together by a brazing material, the brazed part comprising:
- a plurality of locating joints, each of the plurality of locating joints including:
- a projection on one of the first component and the second component;
- and
- a corresponding recess on the other of the first component and the second component;
- wherein, in each of the plurality of locating joints, the projection is located in the corresponding recess to define an inter-component gap between the first component and the second component, in which inter-component gap is received a brazing material that brazes the first component and the second component together, the inter-component gap being sized so as to facilitate transport of a liquid phase of the brazing material therethrough via capillary action;
- and
- at least one lip disposed on at least one of the first component and the second component at a periphery of the inter-component gap, the lip providing a gradual increase of the inter-component gap at the periphery;
- a flow control feature formed between a first section and a second section of the inter-component gap, the first section and the second section not being in the same plane, the flow control feature being an internal lip that reduces a capillary force of the brazing material proximate the internal lip to inhibit the flow of the brazing material from the first section to the second section of the inter-component gap during brazing;
- wherein, during brazing, the gradual increase of the inter-component gap at the periphery produces a meniscus in the liquid phase of the brazing material having a surface tension sufficient to retain the brazing material in the inter-component gap for solidification.
6 more elements
A method of forming a brazed part, the method comprising:
- locating a first component relative to a second component by mating a plurality of locating joint portions of the first component with a plurality of locating joint portions of the second component to form a plurality of locating joints, each of the plurality of locating joints including a projection on one of the first component and the second component and a corresponding recess on the other of the first component and the second component, the first component being positioned relative to the second component such that a brazing surface of the first component and a brazing surface of the second component define an inter-component gap therebetween;
- introducing a brazing material into the inter-component gap;
- heating the brazing material to at least a melting point of the brazing material to form a liquid that flows through the inter-component gap toward a periphery of the inter-component gap by wetting the brazing surfaces of the first component and the second component;
- substantially retaining the brazing material within the inter-component gap by use of at least one lip disposed on at least one of the first component and the second component at a periphery of the inter-component gap, the at least one lip providing a gradual increase of the inter-component gap at the periphery that, upon receiving a flow of the liquid of the brazing material, produces a meniscus in the liquid of the brazing material having a surface tension that retains the brazing material in the inter-component gap for solidification;
- and
- solidifying the brazing material to form a brazed joint between the first component and the second component;
- wherein a flow control feature is formed between a first section and a second section of the inter-component gap, the first section and the second section not being in the same plane, the flow control feature being an internal lip that reduces a capillary force of the brazing material proximate the internal lip to inhibit the flow of the brazing material from the first section to the second section of the inter-component gap during brazing.
4 more elements
Dependencies are inferred from the claim text.