US4771622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strip rolling mill apparatus
Assignee: Danieli United Inc
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Filing: 1986-03-12
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Granted: 1988-09-20
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Expires: 2006-03-12
Abstract
Abstract A multistand tandem strip rolling mill and associated method wherein effective control of gauge and shape are provided. Shape monitoring sensors may be provided adjacent to a first mill stand and adjacent to a downstream mill stand in order to provide feedback-feedforward information regarding strip shape and gauge to controller units which when a predetermined shape has not been achieved issues a control signal to adjust the actuators. A computer preferably has stored information regarding the desired shape and gauge effects a comparison between the signals received from the shape and gauge sensors.Gauge sensors may be provided adjacent to the shape sensors. The mill stands preferably have roll bending cylinders positioned by roll bending system servo-valves which are actuated by signals from the controller.
Inventors
- 👤 Vladimir B. Ginzburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:03
CPC Classifications
B; B21; B21B; B21B37/00; B21B37/28; B21B37/38; B21B38/00; B21B38/02; B21B1/00; B21B1/22; B21B1/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
195 words
A strip rolling mill comprising: a mill stand for rolling strip traveling on a predetermined path of travel and having shape variations, said mill stand having a pair of work rolls forming a roll bite and roll bite contour actuator means for altering the roll bite contour, first shape sensor means arranged downstream of said mill stand for providing signals corresponding to shape variations of the strip at a first position with respect to said mill stand, second shape sensor means disposed downstream of said first shape sensor means for producing signals corresponding to the shape variations of the strip at a second position, said first and second sensor means being arranged relative to said traveling strip such that the spatial relationship of said first and second sensor means relative to said path of travel of the strip is less than the spatial relationship between two succeeding similar reference points of the shape variations of the passing strip, and controller means for receiving said shape signals from said first shape sensor means and said second shape sensor means and emitting a responsive output signal to said mill stand when shape correction is to be effected.
Claim 2
Dependent Claim
195 words
A strip rolling mill comprising: a mill stand for rolling strip traveling on a predetermined path of travel and having shape variations, said mill stand having a pair of work rolls forming a roll bite and roll bite contour actuator means for altering the roll bite contour, first shape sensor means arranged downstream of said mill stand for providing signals corresponding to shape variations of the strip at a first position with respect to said mill stand, second shape sensor means disposed downstream of said first shape sensor means for producing signals corresponding to the shape variations of the strip at a second position, said first and second sensor means being arranged relative to said traveling strip such that the spatial relationship of said first and second sensor means relative to said path of travel of the strip is less than the spatial relationship between two succeeding similar reference points of the shape variations of the passing strip, and controller means for receiving said shape signals from said first shape sensor means and said second shape sensor means and emitting a responsive output signal to said mill stand when shape correction is to be effected.
Claim 3
Dependent Claim
59 words
A strip rolling mill of claim 1 wherein said arranged relationship of said first and second sensor means follows the equation: W.sub.i =(U.sub.i '-U.sub.i ")/(π1) where W i =strip shape waviness U i '=output signal from the first sensor means U i "=output signal from the second sensor means, and l =distance between the first and second sensor means.
Claim 4
Dependent Claim
49 words
The rolling mill of claim 1 including at least one said shape sensor means having an array of sensors spaced with respect to each other and extending generally transversely to the direction of strip travel, whereby each said sensor will monitor shape within a longitudinal stripe of said strip.
Claim 5
Dependent Claim
17 words
The rolling mill of claim 1 including each said shape sensor means having two said sensor arrays.
Claim 6
Dependent Claim
43 words
The rolling mill of claim 4 including said two sensor arrays being disposed generally parallel to each other with the sensors of one array aligned with the sensors of the other, whereby both said arrays will monitor the same stripes of said strip.
Claim 7
Dependent Claim
25 words
The rolling mill of claim 1 including said first shape sensor means and said second shape sensor means each having an array of noncontacting sensor.
Claim 8
Dependent Claim
17 words
The rolling mill of claim 6 including sensor arrays each being a group of inductive displacement transducers.
Claim 9
Independent Claim
160 words
A system for measuring strip shape variations of a strip traveling in a predetermined path, comprising: first shape sensor means arranged in said system for providing signals corresponding to shape variations of the strip at a first position with respect to said system, second shape sensor means disposed downstream of said first shape sensor means for producing signals corresponding to the shape variations of the strip at a second position, said first and second sensor means being arranged relative to said traveling strip such that the spatial relationship of said first and second sensor means relative to said path of travel of the strip is less than the spatial relation between two succeeding similar reference points of the shape variations of the passing strip, and controller means for receiving said shape signals from said first shape sensor means and said second shape sensor means and emitting a responsive output signal to said system when shape correction is to be effected.
Claim 10
Independent Claim
160 words
A system for measuring strip shape variations of a strip traveling in a predetermined path, comprising: first shape sensor means arranged in said system for providing signals corresponding to shape variations of the strip at a first position with respect to said system, second shape sensor means disposed downstream of said first shape sensor means for producing signals corresponding to the shape variations of the strip at a second position, said first and second sensor means being arranged relative to said traveling strip such that the spatial relationship of said first and second sensor means relative to said path of travel of the strip is less than the spatial relation between two succeeding similar reference points of the shape variations of the passing strip, and controller means for receiving said shape signals from said first shape sensor means and said second shape sensor means and emitting a responsive output signal to said system when shape correction is to be effected.
Claim 11
Dependent Claim
56 words
A system of claim 8, wherein said arranged relationship of said first and second sensor means follows the equation: W.sub.i =(U.sub.i '-U.sub.i ")/(πl) wherein W i =strip shape waviness U i '=output signal from the first sensor means U i "=output signal from the second sensor means, and l=distance between the first and second sensor means.
References Cited (Backward Citations)
US3170344A
Cited
US3315506A
Cited
US3475935A
Cited
US3406547A
Cited
US3756050A
Cited
US3592031A
Cited
US3731508A
Cited
US3722244A
Cited
US3808857A
Cited
US3882709A
Cited
US3869892A
Cited
US4030326A
Cited
US4299103A
Cited
US4244025A
Cited
US4428054A
Cited
US4485497A
Cited
US4494205A
Cited
US4711109A
Cited
EP0121148B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-20 | 1992-03-21 | 1992-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-20 | 1996-03-21 | 1996-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-20 | 2000-03-21 | 2000-09-20 | $7700.00 | Window Closed / Lapsed |