US3844778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing grooved alloy structures
Assignee: Crucible Materials Corp
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Filing: 1973-04-12
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Granted: 1974-10-29
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Expires: 1993-04-12
Abstract
Abstract A method for producing an alloy structure having deep surface grooves therein by bonding of alloy powder to a fully dense member, such as a plate having on surfaces thereof nondeformable ceramic mandrels defining the grooves desired. After compacting to fully densify the alloy powder and bond it to the fully dense alloy plate member the ceramic mandrels are removed to expose the grooves. An air-tight, evacuated assembly constituting the powder, plate and nondeformable ceramic mandrels is provided for unitary hot isostatic compacting.
Inventors
- 👤 R Malone
- 👤 L Raring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:39
CPC Classifications
B; B22; B22F; B22F5/00; B22F5/10; B22F7/00; B22F7/06; B22F7/08; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
182 words
A METHOD FOR PRODUCING AN ALLOY STRUCTURE HAVING A DEEP SURFACE GROOVE FORMED BY THE BONDING OF ALLOY POWDER TO AT LEAST ONE FULLY DENSE ALLOY MEMBER, SAID METHOD COMPRISING PLACING ADJACENT SAID FLURRY DENSE MEMBER AT LEAST ONE NONDEFORMABLE MANDREL HAVING A CONFIGURATION AND ORIENTATION CONFORMING TO SAID DEEP SURFACE GROOVE DESIRED ON SAID STRUCTURE, PLACING SAID ALLOY POWDER ADJACENT SAID MANDREL AND ADJACENT SAID FULLY DENSE MEMBER, SEALING SAID FULLY DENSE MEMBER, SAID MANDREL AND SAID ALLOY POWDER IN A DEFORMABLE ENVELOPE TO FORM AN ESSEMBLY THAT IS SEALED AGAINST THE ATMOSPHERE, HEATING SAID ASSEMBLY TO AN ELEVATED TEMPERATURE, HOT ISOSTATICALLY COMPACTING SAID ASSEMBLY BY THE APPLICATION OF FLUID PRESSURE SUFFICIENT TO DEFORM SAID DEVELOPE AND COMPRESS SAID ALLOY POWDER AGAINST SAID NONDEFORMABLE MANDREL AND SAID FULLY DENSE MEMBER TO COMPACT SAID ALLOY POWDER TO SUBSTANTIALLY FULL DENSITY AND PRODUCE A METALLURIGCAL BOND BETWEEN SAID FULLY DENSE POWDER AND SAID FULLY DENSE MEMBER WITHOUT DEFORMING SAID MANDREL AND UPON COMPLETION OF SAID COMPACTING REMOVING SAID NONDEFORMABLE MANDREL FROM SAID ASSEMBLY TO EXPOSE SAID SURFACE GROOVE ON THE RESULTING ALLOY STRUCTURE.
Claim 2
Independent Claim
182 words
A METHOD FOR PRODUCING AN ALLOY STRUCTURE HAVING A DEEP SURFACE GROOVE FORMED BY THE BONDING OF ALLOY POWDER TO AT LEAST ONE FULLY DENSE ALLOY MEMBER, SAID METHOD COMPRISING PLACING ADJACENT SAID FLURRY DENSE MEMBER AT LEAST ONE NONDEFORMABLE MANDREL HAVING A CONFIGURATION AND ORIENTATION CONFORMING TO SAID DEEP SURFACE GROOVE DESIRED ON SAID STRUCTURE, PLACING SAID ALLOY POWDER ADJACENT SAID MANDREL AND ADJACENT SAID FULLY DENSE MEMBER, SEALING SAID FULLY DENSE MEMBER, SAID MANDREL AND SAID ALLOY POWDER IN A DEFORMABLE ENVELOPE TO FORM AN ESSEMBLY THAT IS SEALED AGAINST THE ATMOSPHERE, HEATING SAID ASSEMBLY TO AN ELEVATED TEMPERATURE, HOT ISOSTATICALLY COMPACTING SAID ASSEMBLY BY THE APPLICATION OF FLUID PRESSURE SUFFICIENT TO DEFORM SAID DEVELOPE AND COMPRESS SAID ALLOY POWDER AGAINST SAID NONDEFORMABLE MANDREL AND SAID FULLY DENSE MEMBER TO COMPACT SAID ALLOY POWDER TO SUBSTANTIALLY FULL DENSITY AND PRODUCE A METALLURIGCAL BOND BETWEEN SAID FULLY DENSE POWDER AND SAID FULLY DENSE MEMBER WITHOUT DEFORMING SAID MANDREL AND UPON COMPLETION OF SAID COMPACTING REMOVING SAID NONDEFORMABLE MANDREL FROM SAID ASSEMBLY TO EXPOSE SAID SURFACE GROOVE ON THE RESULTING ALLOY STRUCTURE.
Claim 3
Dependent Claim
21 words
The method of claim 1 wherein said fully dense alloy member and said alloy powder are of substantially identical alloy composition.
Claim 4
Dependent Claim
15 words
The method of claim 1 wherein said nondeformable mandrel is constructed from a ceramic material.
Claim 5
Dependent Claim
33 words
The method of claim 1 wherein said fully dense alloy member has two substantially parallel, coextensive surfaces each of which has adjacent thereto at least one said nondeformable mandrel and said alloy powder.
Claim 6
Dependent Claim
46 words
The method of claim 1 wherein said assembly comprises a fully dense alloy plate having two substantially parallel, coextensive major surfaces, at least one nondeformable ceramic mandrel on each of said major surfaces, with said mandrels being removably secured to said surfaces within said deformable envelope.
Claim 7
Dependent Claim
18 words
The method of claim 5 wherein said ceramic mandrels are secured to said surfaces in substantially opposed relation.
Claim 8
Dependent Claim
19 words
The method of claim 5 wherein the interior of said envelope is evacuated prior to said hot isostatic compacting.
Claim 9
Dependent Claim
17 words
The method of claim 5 wherein said plate and said powder are of substantially different alloy compositions.
Claim 10
Independent Claim
185 words
A method for producing an alloy structure having deep surface grooves formed by the bonding of alloy powder to opposite surfaces of a fully dense alloy plate of substantially the same alloy composition as said alloy powder, said method comprising removably securing on each of said opposite plate surfaces at least one nondeformable ceramic mandrel having a configuration and orientation conforming to the deep surface grooves desired on said alloy structure, placing said plate and mandrels in a deformable envelope substantially filled with said alloy powder to form an assembly, evacuating said assembly, sealing said assembly against the atmosphere, heating said assembly to an elevated temperature, hot isostatically compacting said assembly by the application of fluid pressure sufficient to deform said envelope and compress said alloy powder against said nondeformable mandrel and said plate to compact said alloy powder to substantially full density and produce a metallurgical bond between said fully dense powder and said fully dense plate without deforming said mandrel and upon completion of said compacting removing said nondeformable mandrel from said assembly to expose said surface groove on the resulting alloy structure.
Claim 11
Independent Claim
185 words
A method for producing an alloy structure having deep surface grooves formed by the bonding of alloy powder to opposite surfaces of a fully dense alloy plate of substantially the same alloy composition as said alloy powder, said method comprising removably securing on each of said opposite plate surfaces at least one nondeformable ceramic mandrel having a configuration and orientation conforming to the deep surface grooves desired on said alloy structure, placing said plate and mandrels in a deformable envelope substantially filled with said alloy powder to form an assembly, evacuating said assembly, sealing said assembly against the atmosphere, heating said assembly to an elevated temperature, hot isostatically compacting said assembly by the application of fluid pressure sufficient to deform said envelope and compress said alloy powder against said nondeformable mandrel and said plate to compact said alloy powder to substantially full density and produce a metallurgical bond between said fully dense powder and said fully dense plate without deforming said mandrel and upon completion of said compacting removing said nondeformable mandrel from said assembly to expose said surface groove on the resulting alloy structure.
Claim 12
Dependent Claim
23 words
The method of claim 9 wherein said fully dense alloy plate and said alloy powder are of substantially the same titanium-base alloy composition.
Claim 13
Dependent Claim
39 words
The method of claim 9 wherein said nondeformable ceramic mandrels are constructed from an admixture comprising refractory oxide particles from at least one of the group of refractory oxides consisting of zircon, alumina and silica, and a binding agent.
Claim 14
Dependent Claim
12 words
The method of claim 11 wherein said binding agent is colloidal silica.
Claim 15
Independent Claim
196 words
A method for producing an alloy structure having deep surface grooves formed by the bonding of alloy powder to a surface of a fully dense alloy plate, said method comprising removably securing to said plate surface at least one nondeformable ceramic mandrel having a configuration and orientation conforming to a deep surface groove desired on said alloy structure, placing a fully dense alloy member contiguous to said mandrel and in spaced apart relation To said plate surface, placing said plate, alloy member and mandrel in a deformable envelope substantially filled with said alloy powder to form an assembly, evacuating said assembly, sealing said assembly against the atmosphere, heating said assembly to elevated temperature, hot isostatically compacting said assembly by the application of fluid pressure sufficient to deform said envelope and compress said alloy powder against said nondeformable mandrel, said alloy member and said plate to compact said alloy powder to substantially full density and produce a metallurgical bond between said fully dense powder, said alloy member and said plate without deforming said mandrel and upon completion of said compacting removing said nondeformable mandrel from said assembly to expose said surface groove on the resulting alloy structure.
Claim 16
Independent Claim
196 words
A method for producing an alloy structure having deep surface grooves formed by the bonding of alloy powder to a surface of a fully dense alloy plate, said method comprising removably securing to said plate surface at least one nondeformable ceramic mandrel having a configuration and orientation conforming to a deep surface groove desired on said alloy structure, placing a fully dense alloy member contiguous to said mandrel and in spaced apart relation To said plate surface, placing said plate, alloy member and mandrel in a deformable envelope substantially filled with said alloy powder to form an assembly, evacuating said assembly, sealing said assembly against the atmosphere, heating said assembly to elevated temperature, hot isostatically compacting said assembly by the application of fluid pressure sufficient to deform said envelope and compress said alloy powder against said nondeformable mandrel, said alloy member and said plate to compact said alloy powder to substantially full density and produce a metallurgical bond between said fully dense powder, said alloy member and said plate without deforming said mandrel and upon completion of said compacting removing said nondeformable mandrel from said assembly to expose said surface groove on the resulting alloy structure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |