EP0402671A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Tools employing a large or irregularly shaped diamond abrasive
Assignee: General Electric Co
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Filing: 1990-05-23
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Granted: —
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Expires: 2010-05-23
Abstract
Abstract There is provided a tool comprising a fully dense sheet of diamond brazed to a substrate. The diamond sheet is manufactured by a chemical vapor deposition process and has a thickness of at least about 0.1 mm. The braze material is preferably a carbide-former. A method for making such tools is also provided.
Inventors
- 👤 Paul Donald Gigl
- 👤 David Earl Slutz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 09:14
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; C23C16/27; C23C16/271; B; B24; B24D; B24D3/00; B24D3/02; B24D3/04; B24D3/06; B24D3/10; C30; C30B; C30B25/00; C30B25/02; C30B29/00; C30B29/02; C30B29/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
12 words
A tool comprising a fully dense diamond sheet brazed to a substrate.
Claim 2
Dependent Claim
12 words
A tool comprising a fully dense diamond sheet brazed to a substrate.
Claim 3
Dependent Claim
20 words
A tool as set forth in Claim 1, wherein the diamond sheet is manufactured by a chemical vapor deposition process.
Claim 4
Dependent Claim
21 words
A tool as set forth in Claim 2, wherein the diamond sheet has a thickness of at least about 0.1 millimeters.
Claim 5
Dependent Claim
22 words
A tool as set forth in Claim 3, wherein the longest dimension of the diamond sheet is at least about 30 millimeters.
Claim 6
Dependent Claim
34 words
A tool as set forth in Claim 4, wherein the diamond sheet has a thickness of from about 0.1 millimeters to about 1.0 millimeters and a longest dimension of at least about 50 millimeters.
Claim 7
Dependent Claim
15 words
A tool as set forth in Claim 1 wherein the substrate is a cemented carbide.
Claim 8
Dependent Claim
29 words
A tool as set forth in Claim 6 wherein the diamond sheet is brazed to the cemented carbide substrate with a braze alloy which includes a carbide forming element.
Claim 9
Dependent Claim
17 words
A tool as set forth in Claim 7, wherein the carbide forming element is chromium or titanium.
Claim 10
Dependent Claim
56 words
A tool consisting essentially of a fully dense, thermally stable diamond sheet manufactured by a chemical vapor deposition process brazed to a cemented carbide substrate with a braze alloy containing a carbide forming element, said diamond sheet having a thickness of at least about 0.1 millimeters and a longest dimension of at least about 50 millimeters.
Claim 11
Dependent Claim
56 words
A tool consisting essentially of a fully dense, thermally stable diamond sheet manufactured by a chemical vapor deposition process brazed to a cemented carbide substrate with a braze alloy containing a carbide forming element, said diamond sheet having a thickness of at least about 0.1 millimeters and a longest dimension of at least about 50 millimeters.
Claim 12
Dependent Claim
13 words
A tool as set forth in Claim 9 which has an irregular shape.
Claim 13
Independent Claim
98 words
A method for making a tool comprising the steps: (1) machining a diamond sheet made by a low pressure deposition process to dimensions which are approximately equal to those of the substrate to which it is to be brazed; (2) disposing a braze alloy intermediate said diamond sheet and a substrate; (3) heating the result of step (2) to a temperature sufficient to at least partly melt said braze alloy; (4) cooling the composite material which results from step (3); and (5) machining the diamond layer and/or the substrate of said composite material to substantially the same dimensions.
Claim 14
Independent Claim
98 words
A method for making a tool comprising the steps: (1) machining a diamond sheet made by a low pressure deposition process to dimensions which are approximately equal to those of the substrate to which it is to be brazed; (2) disposing a braze alloy intermediate said diamond sheet and a substrate; (3) heating the result of step (2) to a temperature sufficient to at least partly melt said braze alloy; (4) cooling the composite material which results from step (3); and (5) machining the diamond layer and/or the substrate of said composite material to substantially the same dimensions.
Claim 15
Dependent Claim
18 words
A method as set forth in Claim 11 wherein step (3) is carried out in a vacuum furnace.
Claim 16
Dependent Claim
40 words
A method as set forth in Claim 11, further comprising the steps of growing a sheet of diamond on a surface by a chemical vapor deposition process and removing said sheet of diamond from said surface prior to step (1).
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