US3932200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux for a build-up welding
Assignee: Japan Steel Works Ltd
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Filing: 1974-01-31
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Granted: 1976-01-13
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Expires: 1994-01-31
Abstract
Abstract A flux particularly adapted to the carrying out of a method for a build-up welding proposed by the present applicant essentially comprises, by weight, 50 to 90% of calcium fluoride and 10 to 40% of alumina with an addition of one or more compounds selected from the group consisting of 0.5 to 7% of iron oxide, 2 to 10% silica, 1 to 17% of manganese oxide and 2 to 10% of chrome oxide.
Inventors
- 👤 Katao Miyano
- 👤 Shunichi Tomizuka
- 👤 Takao Adachi
- 👤 Tomoo Takenouchi
- 👤 Satoshi Kondo
- 👤 Akira Hirama
- 👤 Yasuo Endo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:52
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3603; B23K35/3605; B23K35/362
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
A flux for build-up horizontal electroslag welding, consisting of a flux prepared by fusing together 50-90% by weight of calcium fluoride, 10 to 40% by weight of alumina and an effective amount up to 20% by weight of one or more compounds selected from the group consisting of 0.5 to 7% by weight of an iron oxide 2 to 10% by weight of silica, 1 to 17% by weight of manganese oxide and 2 to 10% by weight of chrome oxide, and 0 to 5% by weight of zirconium dioxide.
Claim 2
Dependent Claim
90 words
A flux for build-up horizontal electroslag welding, consisting of a flux prepared by fusing together 50-90% by weight of calcium fluoride, 10 to 40% by weight of alumina and an effective amount up to 20% by weight of one or more compounds selected from the group consisting of 0.5 to 7% by weight of an iron oxide 2 to 10% by weight of silica, 1 to 17% by weight of manganese oxide and 2 to 10% by weight of chrome oxide, and 0 to 5% by weight of zirconium dioxide.
Claim 3
Dependent Claim
45 words
A flux for build-up horizontal slag welding according to claim 1, wherein the flux is prepared by fusing a mixture consisting of 66% by weight of calcium fluoride, 27% by weight of alumina, 2% by weight of iron oxide and 5% by weight of silica.
Claim 4
Dependent Claim
59 words
A flux for build-up horizontal slag welding according to claim 1, prepared by fusing a mixture consisting of 64% by weight of calcium fluoride, 17% by weight of alumina, 5% by weight of iron oxide, 4% by weight of silica, 3% by weight of manganese oxide, 5% by weight of chrome oxide and 2% by weight of zirconium oxide.
Claim 5
Dependent Claim
53 words
A flux for build-up horizontal slag welding according to claim 1, prepared by fusing a mixture consisting of 55% by weight of calcium fluoride, 30% by weight of alumina, 2% by weight of iron oxide, 5% by weight of silica, 5% by weight of manganese oxide and 3% by weight of zirconium oxide.
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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) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |