US3757556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of roughing slab to predetermined width and apparatus thereof
Assignee: JFE Engineering Corp
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Filing: 1971-03-31
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Granted: 1973-09-11
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Expires: 1991-03-31
Abstract
Abstract When roughing a continuously cast slab in a continuous hot rolling stand, the invention breaks down the width of the slab, having passed through a vertical scale breaker, by means of rolls having at least a pair of pressing calibers and thereafter the width of the slab is rolled by means of vertical rolls whereby the width of the slab is rolled more accurately than was possible in the prior art, and accordingly changes of molds of continuous casting machines are no longer required during the continuous casting operation and such an operation is possible over many charges.
Inventors
- 👤 T Kawawa
- 👤 M Kamata
- 👤 Y Ikegami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:03
CPC Classifications
B; B21; B21B; B21B13/00; B21B13/08; B21B13/12; B21B1/00; B21B1/02; B21B1/04
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
129 words
Method of width rolling to obtain improved rough dimensioning of the width of a continuous or non-continuous cast slab with one or more rolling stations comprising the steps of feeding said slab to said one or more rolling stations, rolling at one of said rolling stations each width end of said slab by application of a force to each of said width ends in a direction substantially parallel to the width direction and in a plane perpendicular to said width direction and extending substantially along the thickness of said slab and concurrently therewith application of a set of forces to each of said width ends in directions at opposing oblique angles to said plane, and rolling said slab to thickness at one or more of the other rolling stations.
Claim 2
Dependent Claim
129 words
Method of width rolling to obtain improved rough dimensioning of the width of a continuous or non-continuous cast slab with one or more rolling stations comprising the steps of feeding said slab to said one or more rolling stations, rolling at one of said rolling stations each width end of said slab by application of a force to each of said width ends in a direction substantially parallel to the width direction and in a plane perpendicular to said width direction and extending substantially along the thickness of said slab and concurrently therewith application of a set of forces to each of said width ends in directions at opposing oblique angles to said plane, and rolling said slab to thickness at one or more of the other rolling stations.
Claim 3
Dependent Claim
43 words
Method of claim 1, wherein said forces are applied by one or more pairs of vertically oriented calibered rolls, with said oblique angles formed by the calibered lips ranging from 3* to 12* to said plane, and wherein said slab is continuously cast.
Claim 4
Dependent Claim
22 words
Method of claim 1, wherein after rolling to obtain rough widths said slab is rolling using flat edging rolls and horizontal rolls.
Claim 5
Dependent Claim
28 words
Method of claim 1, wherein scales are first removed from said slab by vertical scale breakers, and wherein horizontal rolls support said slab during said rough width rolling.
Claim 6
Dependent Claim
20 words
Method of claim 1, wherein said slab is reversibly reciprocated to effect repeated application of forces to said width edges.
Claim 7
Dependent Claim
21 words
Method of claim 1, wherein said slab is compressed repeatedly to be reduced in width by 500 mm to 600 mm.
Claim 8
Dependent Claim
78 words
Apparatus for improved rough width rolling of a continuous or non-continuous cast slab, comprising means for compressing the width end portions of said slab with concurrent pressures applied to both said width ends in a plane with the thickness dimension about the thickness of said slab and in planes disposed at opposing oblique angles to said one plane at said ends, means for feeding said slab to said means for compressing, and means for thickness rolling said slab.
Claim 9
Dependent Claim
78 words
Apparatus for improved rough width rolling of a continuous or non-continuous cast slab, comprising means for compressing the width end portions of said slab with concurrent pressures applied to both said width ends in a plane with the thickness dimension about the thickness of said slab and in planes disposed at opposing oblique angles to said one plane at said ends, means for feeding said slab to said means for compressing, and means for thickness rolling said slab.
Claim 10
Dependent Claim
38 words
Apparatus of claim 7, wherein said means for compressing comprises one or more pairs of vertical caliber rolls, and said means for feeding comprises a horizontal roll, and further comprising vertical scale breakers positioned before said calibered rolls.
Claim 11
Dependent Claim
50 words
Apparatus of claim 7, wherein said means for compressing comprises a plurality of vertical calibered rolls, and further comprising vertical edge rolls and horizontal rolls with one or more pairs of said claibered being disposed selectively adjacent to one or more of said vertical edge rolls and said horizontal rolls.
Claim 12
Dependent Claim
13 words
Apparatus of claim 9, wherein said oblique angles are between 3* and 12*.
Claim 13
Dependent Claim
16 words
Apparatus of claim 7, further comprising means for operating said apparatus in a reciprocal reversible manner.
Claim 14
Dependent Claim
69 words
Method of substantially accurately rough dimensioning at least one width edge of a continuously cast slab, comprising the steps of supporting said slab in a substantially flat horizontal position, moving said supported slab in a horizontal direction, and while said slab is moving concurrently forming a substantially flat end on said width edge of said slab and adjacent thereto on both sides of said width edge an angulated bulge.
Claim 15
Dependent Claim
69 words
Method of substantially accurately rough dimensioning at least one width edge of a continuously cast slab, comprising the steps of supporting said slab in a substantially flat horizontal position, moving said supported slab in a horizontal direction, and while said slab is moving concurrently forming a substantially flat end on said width edge of said slab and adjacent thereto on both sides of said width edge an angulated bulge.
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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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |