US3625757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated consumable guide tube for electroslag welding
Assignee: Hobart Brothers LLC
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Filing: 1969-04-23
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Granted: 1971-12-07
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Expires: 1989-04-23
Abstract
Abstract A consumable guide tube for use in electroslag welding includes a coating which, when heated, forms a conductive molten flux having a composition such that relatively long welds in confined areas may be made with the physical properties of the resultant weld being substantially constant throughout the length of the weld. The flux contains titanium dioxide, potassium oxide, and sodium oxide.
Inventors
- 👤 Albert Edward Wiehe
- 👤 Lowell W Mott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:31
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/02; B23K35/0255; B23K35/0294; B23K25/00; B23K35/22; B23K35/36; B23K35/365; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2951; Y10T428/2953; Y10T428/2955
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
44 words
A coated consumable guide tube for use in electroslag welding including a mild steel tube having a coating thereon, said coating including CaF2, SiO2, CaO, MgO, the improvement comprising the addition of the following compounds in combination in the coating K2O 0.75-1.55% Na2O 2.5-3.1%.
Claim 2
Dependent Claim
35 words
The coated guide tube defined in claim 2 wherein said coating, when melted, includes the following ingredients: SiO2 15.80-19.40% TiO2 28.50-32.00% CaO 10.50-12.50% MgO 3.90-4.60% CaF2 28.00-34.50% FeO 0.00-0.40% ZrO2 0.47-0.54% K2O 0.80-1.30% Na2O 2.50-2.90%.
Claim 3
Dependent Claim
35 words
The coated guide tube defined in claim 2 wherein said coating, when melted, includes the following ingredients: SiO2 17.20% TiO2 31.27% CaO 11.27% MgO 4.25% CaF2 31.38% FeO 0.16% ZrO2 0.47% K2O 1.16% Na2O 2.82%.
Claim 4
Dependent Claim
39 words
The coating guide tube defined in claim 2 wherein said coating is formed from the following: Parts Rutile 35.0-43.0 Fluorspar 35.0-43.0 Wollastonite 13.7-16.3 Sodium (CMC) 1.4-1.6 Dolomite 21.9-26.1 Sodium silicate 31.0-34.0 Potassium silicate 9.0-11.5 Water 0.4-1.0 Potassium hydroxide 0.2-0.3.
Claim 5
Dependent Claim
39 words
The coating guide tube defined in claim 2 wherein said coating is formed from the following: Parts Rutile 40.0 Fluorspar 40.0 Wollastonite 15.0 Sodium (CMC) 1.5 Dolomite 24.0 Sodium silicate 32.0 Potassium silicate 10.0 Water 0.5 Potassium hydroxide 0.25.
Claim 6
Dependent Claim
31 words
The coated guide tube defined in claim 2 wherein said coating, when melted, contains the following ingredients: CaF2 53.6-60.6% SiO2 22.0-24.0% CaO 11.0-12.0% MgO 1.7-2.95% MnO 1.6-1.72% K2O 0.75-1.55% Na2O 2.5-3.1%.
Claim 7
Dependent Claim
31 words
The coated guide tube defined in claim 2 wherein said coating, when melted, contains the following ingredients: CaF2 57.05% SiO2 23.05% CaO 11.50% MgO 2.82% MnO 1.66% K2O 1.15% Na2O 2.77%.
Claim 8
Dependent Claim
49 words
The coated guide tube defined in claim 2 wherein said coating is formed from the following: Parts Fluorspar (40 mesh) 35-45 Fluorspar (200 mesh) 33-37 Wollastonite 18.7-21.3 Silico manganese 2.3-2.7 Ferro silicon 3.8-4.2 Sodium (CMC) 1.4-1.6 Dolomite 16.0-17.0 Sodium silicate 31.0-34.0 Potassium silicate 9.0-11.5 Water 0.4-1.0 Potassium hydroxide 0.2-0.3.
Claim 9
Dependent Claim
49 words
The coated guide tube defined in claim 2 wherein said coating is formed from the following: Parts Fluorspar (40 mesh) 40 Fluorspar (200 mesh) 35 Wollastonite 20 Silico manganese 2.5 Ferro silicon 4.0 Sodium (CMC) 1.5 Dolomite 17.5 Sodium silicate 32.0 Potassium silicate 10.0 Water 0.5 Potassium hydroxide 0.25.
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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |