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US4596691A
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Process for forming a laminated strip containing a brazing alloy
Assignee: Osram Sylvania Inc
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Filing: 1984-09-20
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Granted: 1986-06-24
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Expires: 2004-09-20
Abstract
Abstract A process is disclosed for producing a composite in the form of a sheet which involves forming a slurry of a brazing alloy powder and a vehicle, applying the slurry as a pattern or as a layer to a structural substrate, removing the vehicle from the slurry, and melting the alloy uniformly into a homogeneous mass without melting the substrate, and thereafter cooling the same to solidify it into a self supporting sheet.
Inventors
- 👤 Ellis C. Ruppert
- 👤 Brian C. Coad
- 👤 James G. Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:16
CPC Classifications
C; C23; C23C; C23C24/00; C23C24/08; C23C24/10; B; B23; B23K; B23K35/00; B23K35/02; B23K35/0222; B23K35/0233; B23K35/0238; B23K35/22; B23K35/24; B23K35/30; B23K35/3033; B23K35/304; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12944
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
91 words
A process for producing a laminate in the form of a sheet, said process comprising: (a) mixing a brazing alloy in powder form with a vehicle to form a slurry, b) applying said slurry to a structural substrate, selected from the group consisting of superalloys, stainless steel, and copper, (c) removing said vehicle from said slurry to form a layer and, (d) melting said layer uniformly into a homogeneous mass without melting the substrate and thereafter cooling said mass to form a solid laminate of said brazing alloy and structural substrate.
Claim 2
Dependent Claim
91 words
A process for producing a laminate in the form of a sheet, said process comprising: (a) mixing a brazing alloy in powder form with a vehicle to form a slurry, b) applying said slurry to a structural substrate, selected from the group consisting of superalloys, stainless steel, and copper, (c) removing said vehicle from said slurry to form a layer and, (d) melting said layer uniformly into a homogeneous mass without melting the substrate and thereafter cooling said mass to form a solid laminate of said brazing alloy and structural substrate.
Claim 3
Dependent Claim
25 words
A process according to claim 1 wherein the melting point of said layer is at least about 80° C. lower than that of said substrate.
Claim 4
Dependent Claim
50 words
A process according to claim 1 wherein the brazing alloy composition consists essentially of in percent by weight: from about 6% to about 8% chromium, from about 2.5% to about 3.5% boron, from about 4% to about 5% silicon, from about 2.5% to about 3.5% iron, and the balance nickel.
Claim 5
Dependent Claim
36 words
A process according to claim 1 wherein the brazing alloy composition consists essentially of in percent by weight: from about 1.5% to about 2.2% boron, from about 3% to about 4% silicon, and the balance nickel.
Claim 6
Dependent Claim
43 words
A process according to claim 1 wherein the brazing alloy composition consists essentially of in percent by weight: from about 21.5% to about 24.5% manganese, from about 4% to about 5% copper, from about 6% to about 8% silicon, and the balance nickel.
Claim 7
Dependent Claim
29 words
A process according to claim 1 wherein the brazing alloy composition consists essentially of in percent by weight: from about 9% to about 11% tin and the balance copper.
Claim 8
Dependent Claim
11 words
A process according to claim 6 wherein the substrate is copper.
Claim 9
Dependent Claim
12 words
A proces according to claim 1 wherein said substrate is a superalloy.
Claim 10
Dependent Claim
69 words
A process according to claim 8 wherein the substrate consists essentially of in percent by weight: from about 20% to about 24% chromium, from about 8% to about 10% molybdenum, from about 3.5% to about 4.5% niobium, from about 0.1% to about 0.3% aluminum, from about 0.1% to about 0.3% titanium, from about 2% to about 5% iron, from about 0.1% to about 0.2% manganese and the balance nickel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-23 | 1989-12-23 | 1990-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-23 | 1993-12-23 | 1994-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-23 | 1997-12-23 | 1998-06-24 | $7700.00 | Window Closed / Lapsed |