US3877867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating device set in the rolling mill
Assignee: Nippon Steel Corp
•
Filing: 1974-03-18
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Granted: 1975-04-15
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Expires: 1994-03-18
Abstract
Abstract Heating device set in the rolling mill for heating rolled materials to be kept from temperature drop, such heating to be made on the edge portion of such materials with burners fixedly set in a plural number on each of a pair of side guides extending along the rolling line respectly on each of both ends of table rollers for leading rolled materials to the rolling mill.
Inventors
- 👤 Kenji Tsuchiya
- 👤 Yoji Ito
- 👤 Yasuhiro Matsushita
- 👤 Hideshi Tsuji
- 👤 Tomohisa Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:59
CPC Classifications
B; B21; B21B; B21B45/00; B21B45/004; C; C21; C21D; C21D9/00; C21D9/0081; B21B1/00; B21B1/22; B21B1/24; B21B1/26; B21B45/008; Y; Y02; Y02P; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
106 words
In a heating device used in a rolling mill for heating edge portions of rolled materials traveling through said rolling mill and specifically positioned along a steel sheet hot rolling line comprised of a series of roughing rolling mills and finishing rolling mills, the improvements which comprise a pair of side guides positioned along said hot rolling line for guiding said rolled materials, said side guides being movable mounted for movement in a direction perpendicular to the direction of travel of said rolled materials, and a plurality of burneRs positioned on both of said side guides and adapted for heating edge portions of said rolled materials.
Claim 2
Dependent Claim
106 words
In a heating device used in a rolling mill for heating edge portions of rolled materials traveling through said rolling mill and specifically positioned along a steel sheet hot rolling line comprised of a series of roughing rolling mills and finishing rolling mills, the improvements which comprise a pair of side guides positioned along said hot rolling line for guiding said rolled materials, said side guides being movable mounted for movement in a direction perpendicular to the direction of travel of said rolled materials, and a plurality of burneRs positioned on both of said side guides and adapted for heating edge portions of said rolled materials.
Claim 3
Dependent Claim
42 words
The improved device of claim 1, wherein each of said side guides is comprised of a perpendicular side plate extending along said rolling line and bar-shaped spacing members extending from said side plates at positions corresponding to the height of rolled material.
Claim 4
Dependent Claim
42 words
The improved device of claim 1 wherein each of said side guides is comprised of a perpendicular side plate extending along the rolling line and a plurality of guide rollers mounted on shafts for free rotation and extending from said side plates.
Claim 5
Dependent Claim
37 words
The improved device of claim 1, wherein table rollers are provided along the rolling line and nozzles of said burners are directed laterally toward the edge portions of the rolled material from positions intermediate adjacent table rollers.
Claim 6
Dependent Claim
20 words
The improved heating device of claim 1, wherein each of said guides further comprises a water cooling jacket positioned therewithin.
Claim 7
Dependent Claim
28 words
The improved heating device of claim 1 further comprising a box-shaped heat-retaining cover having an inside lining of refractory material, said cover being positioned over said side guides.
Claim 8
Dependent Claim
18 words
The improved heating device of claim 6 further comprising exhaust stacks extending upwardly from said heat retaining cover.
Claim 9
Dependent Claim
32 words
The improved heating device of claim 6, further comprising a burner pipe guide member for thermally protecting the burners and burner pipes, and positioned on the upper portion of said side guide.
Claim 10
Dependent Claim
31 words
The improved device of claim 1 wherein said burners are grouped into more than two sections and further comprising heating control device coupled to said burners for independently controlling said sections.
Claim 11
Dependent Claim
118 words
The improved device of claim 8, further comprising at least one rolled material detector and speed transmitter positioned at least before said heating device along the rolling line, said rolled material detector generating an entrance signal and exit signal, said speed transmitter generating a speed signal, a calculation controlling means operatively coupled to said detector and speed transmitter for computing the distance between said rolled material detector and one of the tip and rear end of the rolled material, said calculation controlling means coupled to said heating device and generating an output signal when the tip of the rolled material enters each section and when the rear end leaves each section, thereby selectively activating and deactivating said burners.
References Cited (Backward Citations)
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Cited
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US2646231A
Cited
US2792206A
Cited
US3385579A
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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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |