Patent US3670381A successfully refreshed from Google Patents.
US3670381A
Expired / Lapsed
US
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Rolls and rollers particularly for continuous casting plants, bar deformation plants and for hot rolling mills operated at low rolling speeds
Assignee: Voestalpine AG
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Filing: 1970-07-17
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Granted: 1972-06-20
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Expires: 1990-07-17
Abstract
Abstract The invention proposes rolls and rollers, particularly for continuous casting plants, bar deformation plants and hot rolling mills operated at low rolling speeds, in which the improvement resides in that the working body of the rolls or rollers, respectively, is formed by a plurality of segments arranged side by side with play, which segments are provided with key-like projections engaging with correspondingly formed guiding grooves arranged at the roll or roller core. The core may be made of material of high strength, capable of absorbing great bending stresses, and the segments may be made of material resistant to heat and wear. Owing to the division of the working tools into two units and the provision of play between segments, heat cracks and ruptures are precluded.
Inventors
- 👤 Rudolf Schoffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:51
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/12; B22D11/128; B22D11/1287; B21; B21B; B21B39/00; B21B39/008
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
89 words
A revolving tool particularly for use as rolls and rollers in continuous casting plants, bar deformation plants and hot rolling mills operated at low rolling speeds, comprising a core made of material with a high strength and capable of absorbing great bending stresses, and having a plurality of guiding grooves on its periphery, and a body formed of a plurality of segments arranged side by side with play, the segments being made of material resistant to heat and wear and having key-like projections for engagement with said guiding grooves.
Claim 2
Dependent Claim
89 words
A revolving tool particularly for use as rolls and rollers in continuous casting plants, bar deformation plants and hot rolling mills operated at low rolling speeds, comprising a core made of material with a high strength and capable of absorbing great bending stresses, and having a plurality of guiding grooves on its periphery, and a body formed of a plurality of segments arranged side by side with play, the segments being made of material resistant to heat and wear and having key-like projections for engagement with said guiding grooves.
Claim 3
Dependent Claim
30 words
The tool set forth in claim 1, wherein said segments have slightly inclined side faces so that the play gaps are slightly conically widening towards the periphery of the tool.
Claim 4
Dependent Claim
17 words
The tool set forth in claim 1, wherein the key-like projections are designed to be dove-tail shaped.
Claim 5
Dependent Claim
44 words
The tool set forth in claim 1, wherein the grooves are arranged parallel to the longitudinal axis of the tool, the individual rows of segments are held together by connecting means, and a holding ring is provided for securing said segments to the core.
Claim 6
Dependent Claim
57 words
The tool set forth in claim 1, wherein the grooves are arranged perpendicular to the longitudinal axis of the tool, at least one recess is provided extending the length of the tool parallel to its longitudinal axis for positioning said segments in the grooves, and a holding rail is provided for securing said segments to the core.
Claim 7
Dependent Claim
69 words
The tool set forth in claim 1, wherein the segments are made of heat-resistant steel composed of 0.15 to 0.30 % C, 0.20 to 0.50 % Si, 0.40 to 0.70 % Mn, 0 to 0.035 % P, 0 to 0.035% S, 0.50 to 3.0 % Cr, 0.40 to 1.0 % Mo, 0 to 1.5 % Ni, 0 to 0.5 % V and 0 to 1 % W, balance iron.
Claim 8
Dependent Claim
33 words
The tool set forth in claim 1, wherein the core is made of steel composed of 0.5 to 0.7 % C, 0.2 to 0.6 % Si, 0.6 to 1.0 % Mn, balance iron.
Claim 9
Dependent Claim
149 words
A revolving tool particularly for use as rolls and rollers in continuous casting plants, bar deformation plants and hot rolling mills operated at low rolling speeds, comprising a core made of heat-resistant steel consisting of 0.15 to 0.30 % C, 0.20 to 0.50 % Si, 0.40 to 0.70 % Mn, 0 to 0.035 % P, 0 to 0.035 % S, 0.50 to 3.0 % Cr, 0.40 to 1.0 % Mo, 0 to 1.5 % Ni, 0 to 0.5 % V, and 0 to 1 % W, balance iron, and having a plurality of guiding grooves on its periphery, and a body formed of a plurality of segments arranged side by side with play, the segments being made of steel consisting of 0.5 to 0.7 % C, 0.2 to 0.6 % Si, and 0.6 to 1.0 % Mn, balance iron, and having key-like projections for engagement with said guiding grooves.
Claim 10
Dependent Claim
149 words
A revolving tool particularly for use as rolls and rollers in continuous casting plants, bar deformation plants and hot rolling mills operated at low rolling speeds, comprising a core made of heat-resistant steel consisting of 0.15 to 0.30 % C, 0.20 to 0.50 % Si, 0.40 to 0.70 % Mn, 0 to 0.035 % P, 0 to 0.035 % S, 0.50 to 3.0 % Cr, 0.40 to 1.0 % Mo, 0 to 1.5 % Ni, 0 to 0.5 % V, and 0 to 1 % W, balance iron, and having a plurality of guiding grooves on its periphery, and a body formed of a plurality of segments arranged side by side with play, the segments being made of steel consisting of 0.5 to 0.7 % C, 0.2 to 0.6 % Si, and 0.6 to 1.0 % Mn, balance iron, and having key-like projections for engagement with said guiding grooves.
Claim 11
Dependent Claim
30 words
The tool set forth in claim 8, wherein said segments have slightly inclined side faces so that the play gaps are slightly conically widening towards the periphery of the tool.
Claim 12
Dependent Claim
17 words
The tool set forth in claim 8, wherein the key-like projections are designed to be dove-tail shaped.
Claim 13
Dependent Claim
44 words
The tool set forth in claim 8, wherein the grooves are arranged parallel to the longitudinal axis of the tool, the individual rows of segments are held together by connecting means, and a holding ring is provided for securing said segments to the core.
Claim 14
Dependent Claim
57 words
The tool set forth in claim 8, wherein the grooves are arranged perpendicular to the longitudinal axis of the tool, at least one recess is provided extending the length of the tool parallel to its longitudinal axis for positioning said segments in the grooves, and a holding rail is provided for securing said segments to the core.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |