US4955126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for fusing steel slabs in longitudinal direction thereof
Assignee: JFE Steel Corp
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Filing: 1989-04-20
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Granted: 1990-09-11
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Expires: 2009-04-20
Abstract
Abstract A process for fusing a steel slab in a longitudinal direction thereof is disclosed, wherein when the steel slab is fused in the longitudinal direction at more than 500° C. and at a speed of more than 300 mm/min., a surface portion of the slab including at least a lower portion of a longitudinally fused surface portion thereof is mechanically removed by cutting or grinding.
Inventors
- 👤 Masaru Shibata
- 👤 Masayuki Onishi
- 👤 Hitoshi Ohsugi
- 👤 Shigeru Ogura
- 👤 Masaru Washio
- 👤 Hideo Kuguminato
- 👤 Yoshiaki Hara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:56
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/12; B22D11/126; B23; B23K; B23K7/00; B23K7/002; B23K7/003; B24; B24B; B24B27/00; B24B27/033; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988; Y10T29/49989
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
68 words
A process for cutting a steel slab being continuously cast, comprising the steps of: (1) maintaining said slab at a temperature more than 500° C., (2) torch cutting the slab in a longitudinal direction at a speed more than 300 mm/minute such that at least a surface portion is fused, and (3) removing at least a lower portion of the longitudinally cut fused surface portion of the slab.
Claim 2
Dependent Claim
68 words
A process for cutting a steel slab being continuously cast, comprising the steps of: (1) maintaining said slab at a temperature more than 500° C., (2) torch cutting the slab in a longitudinal direction at a speed more than 300 mm/minute such that at least a surface portion is fused, and (3) removing at least a lower portion of the longitudinally cut fused surface portion of the slab.
Claim 3
Dependent Claim
12 words
A process according to claim 1, wherein the removing step is grinding.
Claim 4
Dependent Claim
13 words
A process according to claim 1, wherein the removing step is mechanical cutting.
Claim 5
Dependent Claim
20 words
A process according to claim 1, wherein the step of removal does not exceed in depth more than 1.0 mm.
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) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |