US3717442A
Expired / Lapsed
US
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Brazing alloy composition
Assignee: Johnson & Co Inc A
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Filing: 1971-05-17
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Granted: 1973-02-20
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Expires: 1991-05-17
Abstract
Abstract A powder brazing composition is provided comprising a blend of at least two alloy powders (A) and (B) as essential ingredients, the ratio of powder alloy (A) to powder alloy (B) ranging in parts by weight from about 50(A)/50(B) to 75(A)/25(B); the composition of alloy (A) consisting essentially by weight of about 35 to 70 percent copper, about 3 to 20 percent nickel and the balance essentially manganese in the range of about 15 to 50 percent; the composition of alloy (B) consisting essentially of about 2.5 to 5.5 percent silicon, about 0.75 to 5.25 percent boron and the balance essentially nickel; the mixture being such that the average composition thereof with respect to the silicon and boron contents being about 0.05 to 3 percent silicon and about 0.15 to 1.5 percent boron by weight. A brazed joint will generally have substantially the average composition of the brazing alloy mixture.
Inventors
- 👤 W Knopp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:18
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3033; B22; B22F; B22F7/00; B22F7/06; B22F7/062; B22F7/064; B23K35/302; B23K35/02; B23K35/0222; B23K35/0244; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12042; Y10T428/12063; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12882
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
152 words
A brazing alloy composition comprising a mixture of at least two metallic constituents which include as essential ingredients alloy powders (A) and (B); the ratio of alloy composition (A) to alloy composition (B) ranging in parts by weight from about 50(A)/50(B) to 75(A)/25(B); wherein composition (A) consists essentially by weight of about 35 to 70 percent copper, about 3 to 20 percent nickel and the balance essentially manganese in the range of about 15 to 50 percent; and wherein composition (B) consists essentially of about 2.5 to 5.5 percent silicon, about 0.75 to 5.25 percent boron and the balance essentially nickel; the mixture being selected to provide an average composition in the mixture of about 30 to 50 percent copper, about 10 to 20 percent manganese, about 0.5 to 3 percent silicon, about 0.5 to 1.5 percent boron, and the balance essentially nickel in the range of about 30 to 50 percent.
Claim 2
Dependent Claim
152 words
A brazing alloy composition comprising a mixture of at least two metallic constituents which include as essential ingredients alloy powders (A) and (B); the ratio of alloy composition (A) to alloy composition (B) ranging in parts by weight from about 50(A)/50(B) to 75(A)/25(B); wherein composition (A) consists essentially by weight of about 35 to 70 percent copper, about 3 to 20 percent nickel and the balance essentially manganese in the range of about 15 to 50 percent; and wherein composition (B) consists essentially of about 2.5 to 5.5 percent silicon, about 0.75 to 5.25 percent boron and the balance essentially nickel; the mixture being selected to provide an average composition in the mixture of about 30 to 50 percent copper, about 10 to 20 percent manganese, about 0.5 to 3 percent silicon, about 0.5 to 1.5 percent boron, and the balance essentially nickel in the range of about 30 to 50 percent.
Claim 3
Dependent Claim
15 words
The brazing composition of claim 1, wherein the composition ranges from about 55(A)/45(B) to 70(A)/30(B).
Claim 4
Dependent Claim
58 words
The brazing alloy composition of claim 1, wherein the average composition of the total mixture consists essentially by weight of about 35 to 45 percent copper, about 10 to 20 percent manganese, about 1 to 3 percent silicon, about 0.7 to 1.5 percent boron and the balance essentially nickel in the range of about 36 to 48 percent.
Claim 5
Dependent Claim
38 words
The brazing composition of claim 1, wherein the average composition of silicon and boron in the total mixture is such that the sum of the silicon and boron contents ranges by weight from about 1.7 to 4 percent.
Claim 6
Dependent Claim
67 words
The brazing alloy composition of claim 1, wherein alloy (A) consists essentially by weight of about 60 to 70 percent copper, about 6 to 12 percent nickel and manganese essentially the balance in the range of about 15 to 40 percent; and wherein alloy (B) consists essentially by weight of about 3.5 to 5.5 percent silicon, about 2 to 4 percent boron and the balance essentially nickel.
Claim 7
Dependent Claim
40 words
The brazing alloy composition of claim 5, wherein the average composition of silicon and boron contents in the total mixture is such that the sum of the silicon and boron contents ranges by weight from about 1.7 to 4 percent.
Claim 8
Dependent Claim
53 words
A brazing alloy composition consisting essentially of about 30 to 50 percent copper, about 10 to 20 percent manganese, about 0.5 to 3 percent siliCon, about 0.5 to 1.5 percent boron and the balance essentially nickel, the sum of the silicon and boron contents ranging from about 1.7 to 4 percent by weight.
Claim 9
Dependent Claim
53 words
A brazing alloy composition consisting essentially of about 30 to 50 percent copper, about 10 to 20 percent manganese, about 0.5 to 3 percent siliCon, about 0.5 to 1.5 percent boron and the balance essentially nickel, the sum of the silicon and boron contents ranging from about 1.7 to 4 percent by weight.
Claim 10
Dependent Claim
39 words
The brazing alloy composition of claim 7 consisting essentially of about 35 to 45 percent copper, about 10 to 20 percent manganese, about 1 to 3 percent silicon, about 0.7 to 1.5 percent boron, and the balance essentially nickel.
Claim 11
Dependent Claim
54 words
A brazing alloy composition consisting essentially of about 30 to 50 percent copper, about 10 to 20 percent manganese, at least about 0.5 percent silicon and at least about 0.5 percent boron and the balance essentially nickel, the sum of the silicon and boron contents ranging from about 1.7 to 4 percent by weight.
Claim 12
Dependent Claim
54 words
A brazing alloy composition consisting essentially of about 30 to 50 percent copper, about 10 to 20 percent manganese, at least about 0.5 percent silicon and at least about 0.5 percent boron and the balance essentially nickel, the sum of the silicon and boron contents ranging from about 1.7 to 4 percent by weight.
Claim 13
Dependent Claim
81 words
A brazed metal joint comprised of metal parts with a fused brazing alloy interposed therebetween joining said parts together into a strong joint, said fused brazing alloy consisting essentially by weight of about 50 to 30 percent copper, about 10 to 20 percent manganese, about 0.5 to 1.5 percent boron, about 0.5 to 3 percent silicon and the balance essentially nickel, the sum of the boron and silicon contents in the brazed alloy joint ranging from about 1.7 to 4 percent.
Claim 14
Dependent Claim
81 words
A brazed metal joint comprised of metal parts with a fused brazing alloy interposed therebetween joining said parts together into a strong joint, said fused brazing alloy consisting essentially by weight of about 50 to 30 percent copper, about 10 to 20 percent manganese, about 0.5 to 1.5 percent boron, about 0.5 to 3 percent silicon and the balance essentially nickel, the sum of the boron and silicon contents in the brazed alloy joint ranging from about 1.7 to 4 percent.
Claim 15
Dependent Claim
109 words
A brazed metal joint comprised of metal parts, at least one of which is a porous powder metallurgy ferrous metal part, and a fused brazing alloy interposed between said parts joining said parts together into a strong joint with limited penetration of the brazing alloy into the porous ferrous metal part, said fused brazing alloy consisting essentially by weight of about 50 to 30 percent copper, about 10 to 20 percent manganese, about 0.5 to 1.5 percent boron, about 0.5 to 3 percent silicon and the balance essentially nickel, the sum of the boron and silicon contents in the brazed alloy joint ranging from about 1.7 to 4 percent.
Claim 16
Dependent Claim
109 words
A brazed metal joint comprised of metal parts, at least one of which is a porous powder metallurgy ferrous metal part, and a fused brazing alloy interposed between said parts joining said parts together into a strong joint with limited penetration of the brazing alloy into the porous ferrous metal part, said fused brazing alloy consisting essentially by weight of about 50 to 30 percent copper, about 10 to 20 percent manganese, about 0.5 to 1.5 percent boron, about 0.5 to 3 percent silicon and the balance essentially nickel, the sum of the boron and silicon contents in the brazed alloy joint ranging from about 1.7 to 4 percent.
Claim 17
Dependent Claim
17 words
The brazed joint of claim 11, wherein the brazed joint is formed of two ferrous metal parts.
Claim 18
Dependent Claim
17 words
The brazed joint of claim 12 wherein the metal parts are porous powder metallurgy parts of steel.
Claim 19
Dependent Claim
45 words
The brazed joint of claim 13, wherein the fused brazing alloy consists essentially by weight of about 40 to 35 percent copper, about 12 to 18 percent manganese, about 0.7 to 1.5 percent boron, about 1 to 3 percent silicon and the balance essentially nickel.
Claim 20
Dependent Claim
82 words
A brazed metal joint comprised of metal parts with a fused brazing alloy interposed therebetween joining said parts together into a strong joint, said fused brazing alloy consisting essentially by weight of about 50 to 30 percent copper, about 10 to 20 percent manganese, at least about 0.5 percent boron, and at least about 0.5 percent silicon and the balance essentially nickel, the sum of the boron and silicon contents in the brazed alloy joint ranging from about 1.7 to 4 percent.
Claim 21
Dependent Claim
82 words
A brazed metal joint comprised of metal parts with a fused brazing alloy interposed therebetween joining said parts together into a strong joint, said fused brazing alloy consisting essentially by weight of about 50 to 30 percent copper, about 10 to 20 percent manganese, at least about 0.5 percent boron, and at least about 0.5 percent silicon and the balance essentially nickel, the sum of the boron and silicon contents in the brazed alloy joint ranging from about 1.7 to 4 percent.
Claim 22
Independent Claim
225 words
A method of brazing a porous powder metallurgy ferrous metal part to another metal part which comprises, assembling said porous ferrous metal part in contact with said another metal part at a selected region to be joined, applying to said region a brazing composition formed of a blend of at least two metal ingredients including alloy powders (A) and (B), the to alloy powder ratio by weight of alloy powder (A) (B) ranging from about 50(A)/50(B) to 75(A)/25(B); wherein composition (A) consists essentially of about 35 to 70 percent copper, about 3 to 20 percent nickel and the balance essentially manganese in the range of about 15 to 50 percent; and wherein composition (B) consists essentially of about 2.5 to 5.5 percent silicon, about 0.75 to 5.25 percent boron and the balance essentially nickEl, the mixture being such that the average composition thereof is about 30 to 50 percent copper, about 10 to 20 percent manganese, about 0.5 to 3 percent silicon and about 0.5 to 1.5 percent boron; and heating said parts with the applied brazing material under substantially non-oxidizing conditions to a temperature at which the material melts and flows to wet the region being brazed, and then cooling said assembled parts whereby to form a strong brazed joint characterized by limited penetration of the brazing material into the porous ferrous metal part.
Claim 23
Independent Claim
225 words
A method of brazing a porous powder metallurgy ferrous metal part to another metal part which comprises, assembling said porous ferrous metal part in contact with said another metal part at a selected region to be joined, applying to said region a brazing composition formed of a blend of at least two metal ingredients including alloy powders (A) and (B), the to alloy powder ratio by weight of alloy powder (A) (B) ranging from about 50(A)/50(B) to 75(A)/25(B); wherein composition (A) consists essentially of about 35 to 70 percent copper, about 3 to 20 percent nickel and the balance essentially manganese in the range of about 15 to 50 percent; and wherein composition (B) consists essentially of about 2.5 to 5.5 percent silicon, about 0.75 to 5.25 percent boron and the balance essentially nickEl, the mixture being such that the average composition thereof is about 30 to 50 percent copper, about 10 to 20 percent manganese, about 0.5 to 3 percent silicon and about 0.5 to 1.5 percent boron; and heating said parts with the applied brazing material under substantially non-oxidizing conditions to a temperature at which the material melts and flows to wet the region being brazed, and then cooling said assembled parts whereby to form a strong brazed joint characterized by limited penetration of the brazing material into the porous ferrous metal part.
Claim 24
Dependent Claim
31 words
The method of claim 16, wherein the porous ferrous metal part is made of a compressed steel composition, and wherein the brazing and sintering of said part is carried on simultaneously.
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |