Patent US4057706A successfully refreshed from Google Patents.
US4057706A
Expired / Lapsed
US
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Coating composition and a coated electrode for arc welding
Assignee: Nippon Steel Corp
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Filing: 1976-04-09
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Granted: 1977-11-08
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Expires: 1996-04-09
Abstract
Abstract A coating composition for a welding electrode comprising 35 to 55% CaCO3, 1 to 8% Fe2O3, 1 to 7% CaF2, with the ratio of Fe2O3 to CaF2 being from 0.4 to 1.6, 1 to 5% Mn, 4 to 9% Si and 2 to 9% Ni with the balance being a slag forming agent, an arc stabilization agent and a binding agent.
Inventors
- 👤 Takashi Tanigaki
- 👤 Yoshikazu Tanaka
- 👤 Takeshi Koshio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:46
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/365; B23K35/3601; B23K35/3602; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2951; Y10T428/2955
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
A coating composition for a welding electrode comprising 35 to 55% CaCO 3 , 1 to 8% Fe 2 O 3 , 1 to 7% CaF 2 , with the ratio of Fe 2 O 3 to CaF 2 being from 0.4 to 1.6, 1 to 5% Mn, 4 to 9% Si and 2 to 9% Ni with the balance being a slag forming agent, an arc stabilization agent and a binding agent.
Claim 2
Dependent Claim
73 words
A coating composition for a welding electrode comprising 35 to 55% CaCO 3 , 1 to 8% Fe 2 O 3 , 1 to 7% CaF 2 , with the ratio of Fe 2 O 3 to CaF 2 being from 0.4 to 1.6, 1 to 5% Mn, 4 to 9% Si and 2 to 9% Ni with the balance being a slag forming agent, an arc stabilization agent and a binding agent.
Claim 3
Dependent Claim
29 words
A coating composition according to claim 1 which further comprises not more than 30% by weight of iron powder on the basis of the total weight of the composition.
Claim 4
Dependent Claim
83 words
A coated electrode for arc welding comprising a mild steel core wire coated with a coating composition comprising 35 to 55% CaCO 3 , 1 to 8% Fe 2 O 3 , 1 to 7% CaF 2 , with the ratio of Fe 2 O 3 to CaF 2 being from 0.4 to 1.6, 1 to 5% Mn, 4 to 9% Si and 2 to 9% Ni with the balance being a slag forming agent, an arc stabilization agent and a binding agent.
Claim 5
Dependent Claim
83 words
A coated electrode for arc welding comprising a mild steel core wire coated with a coating composition comprising 35 to 55% CaCO 3 , 1 to 8% Fe 2 O 3 , 1 to 7% CaF 2 , with the ratio of Fe 2 O 3 to CaF 2 being from 0.4 to 1.6, 1 to 5% Mn, 4 to 9% Si and 2 to 9% Ni with the balance being a slag forming agent, an arc stabilization agent and a binding agent.
Claim 6
Dependent Claim
33 words
A coated electrode according to claim 3 in which the coating composition further comprises not more than 30% by weight of iron powder on the basis of the total weight of the composition.
References Cited (Backward Citations)
US3453142A
Cited
GB1377961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |