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US4101319A
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US
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Plasma deposition welding powder for producing wear resistant layers
Assignee: Goetzewerke Friedrich Goetze AG
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Filing: 1976-05-19
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Granted: 1978-07-18
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Expires: 1996-05-19
Abstract
Abstract Plasma deposition welding powder for the production of a wear-resistant coating on machine parts subject to friction consists essentially of a mixture of two components A and B, of which component A is present at 70 to 99.5 weight percent of the total of A and B. Component A comprises at least one metal selected from the group consisting of molybdenum and tungsten. Component B is present at 0.5 to 30 weight percent of the total of A and B and consists essentially of at least one alloy or compound of at least one of the metals selected from the group consisting of cobalt, chromium, iron, nickel, copper and manganese, with at least one of the elements selected from the group consisting of phosphorus, boron and silicon.
Inventors
- 👤 Horst Beyer
- 👤 Ulrich Buran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:46
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
116 words
Plasma deposition welding powder for the production of wear-resistant layers or machine parts subject to friction, consists essentially of a powder mixture of two components A and B, of which component A is present at about 70 to 99.5 weight percent of the total of A and B, component A comprising at least one metal selected from the group consisting of molybdenum and tungsten, component B being present at about 0.5 to 30 weight percent of the total of A and B, and consisting essentially of at least one alloy or compound of at least one of the metals selected from the group consisting of cobalt, chromium, iron, nickel, copper and manganese, with at least phosphorus.
Claim 2
Dependent Claim
116 words
Plasma deposition welding powder for the production of wear-resistant layers or machine parts subject to friction, consists essentially of a powder mixture of two components A and B, of which component A is present at about 70 to 99.5 weight percent of the total of A and B, component A comprising at least one metal selected from the group consisting of molybdenum and tungsten, component B being present at about 0.5 to 30 weight percent of the total of A and B, and consisting essentially of at least one alloy or compound of at least one of the metals selected from the group consisting of cobalt, chromium, iron, nickel, copper and manganese, with at least phosphorus.
Claim 3
Dependent Claim
32 words
The plasma deposition welding powder as defined in claim 1 wherein component A consists of an alloy powder containing 65 to 95 weight percent molybdenum and 5 to 35 weight percent titanium.
Claim 4
Dependent Claim
63 words
The plasma deposition welding powder as defined in claim 1 wherein component B consists essentially of a technical ferrophosphorus powder which contains, based on the weight of component B, 55 to 70 weight percent iron, 18 to 24 weight percent phosphorus, and 9 to 12 weight percent calcium, 2 to 6 weight percent silicon and 1 to 3 weight percent manganese as impurities.
Claim 5
Dependent Claim
34 words
The plasma deposition welding powder as defined in claim 1 wherein up to 10 weight percent graphite are additionally mixed into the powder mixture, based on the total weight of components A and B.
Claim 6
Dependent Claim
32 words
The plasma deposition welding powder as defined in claim 1 wherein component A contains at least one further metal selected from the group consisting of tantalum, niobium, zirconium, chromium, vanadium and titanium.
Claim 7
Dependent Claim
35 words
The plasma deposition welding powder as defined in claim 5 wherein the further metal in component A is present at an amount of up to 35 weight percent, based on the weight of component A.
Claim 8
Dependent Claim
36 words
The plasma deposition welding powder as defined in claim 5 wherein the further metal in component A is present at an amount of from 5 to 35 weight percent, based on the weight of component A.
Claim 9
Dependent Claim
126 words
A machine part which is subject to friction and which contains a wear-resistant layer formed by plasma deposition welding of a plasma deposition welding powder which consists essentially of a powder mixture of two components A and B, of which component A is present at about 70 to 99.5 weight percent of the total of A and B, component A comprising at least one metal selected from the group consisting of molybdenum and tungsten, component B being present at about 0.5 to 30 weight percent of the total of A and B, and consisting essentially of at least one alloy or compound of at least one of the metals selected from the group consisting of cobalt, chromium, iron, nickel, copper and manganese, with at least phosphorus.
Claim 10
Dependent Claim
126 words
A machine part which is subject to friction and which contains a wear-resistant layer formed by plasma deposition welding of a plasma deposition welding powder which consists essentially of a powder mixture of two components A and B, of which component A is present at about 70 to 99.5 weight percent of the total of A and B, component A comprising at least one metal selected from the group consisting of molybdenum and tungsten, component B being present at about 0.5 to 30 weight percent of the total of A and B, and consisting essentially of at least one alloy or compound of at least one of the metals selected from the group consisting of cobalt, chromium, iron, nickel, copper and manganese, with at least phosphorus.
Claim 11
Dependent Claim
30 words
The machine part as defined in claim 8 wherein component A consists of an alloy powder containing 65 to 95 weight percent molybdenum and 5 to 35 weight percent titanium.
Claim 12
Dependent Claim
60 words
The machine part as defined in claim 8 wherein component B consists of a technical ferrophosphorus powder which contains, based on the weight of component B, 55 to 70 weight percent iron, 18 to 24 weight percent phosphorus, and 9 to 12 weight percent calcium, 2 to 6 weight percent silicon and 1 to 3 weight percent manganese as impurities.
Claim 13
Dependent Claim
32 words
The machine part as defined in claim 8 wherein up to 10 weight percent graphite are additionally mixed into the powder mixture, based on the total weight of components A and B.
Claim 14
Dependent Claim
30 words
The machine part as defined in claim 8 wherein component A contains at least one further metal selected from the group consisting of tantalum, niobium, zirconium, chromium, vanadium and titanium.
Claim 15
Dependent Claim
33 words
The machine part as defined in claim 12 wherein the further metal in component A is present at an amount of up to 35 weight percent, based on the weight of component A.
Claim 16
Dependent Claim
34 words
The machine part as defined in claim 12 wherein the further metal in component A is present at an amount of from 5 to 35 weight percent, based on the weight of component A.
Claim 17
Dependent Claim
17 words
The machine part as defined in claim 8 which is in the form of a sealing strip.
Claim 18
Dependent Claim
21 words
The machine part as defined in claim 8 which is in the form of a piston ring for a piston engine.
References Cited (Backward Citations)
GB1042708A
Cited
GB1102845A
Cited
GB1263859A
Cited
US3690686A
Cited
GB1389726A
Cited
US3936295A
Cited
US3890137A
Cited
US3991240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |