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US4387586A
Expired / Lapsed
US
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Method of widthwise rolling of rolled material and apparatus therefor
Assignee: Hitachi Ltd
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Filing: 1980-10-24
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Granted: 1983-06-14
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Expires: 2000-10-24
Abstract
Abstract A method and apparatus for rolling a rolled material widthwise thereof wherein the rolled material in the form of a flat metal which may be a slab of metal having a large width as contrasted with the thickness has its lengthwise end portion shaped by compression working while the rolled material remains stationary in such a manner that the lengthwise end portion is formed with a progressively reducing width portion in which the width is progressively reduced in going toward the end of the rolled material, and a uniform width portion contiguous with the progressively reducing width portion and having a width equal to the minimum width of the progressively reducing width portion between its end contiguous with the progressively reducing width portion and the end of the rolled material. Thereafter, the rolled material is subjected to widthwise rolling, whereby the fishtail produced at the end of the rolled material can be greatly diminished.
Inventors
- 👤 Hiroshi Awazuhara
- 👤 Sukebumi Tsumura
- 👤 Tomoaki Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:14
CPC Classifications
B; B21; B21J; B21J1/00; B21J1/04; B21B; B21B1/00; B21B1/02; B21J5/00; B21B15/00; B21B15/0035; B21B15/0042; B21B2263/00; B21B2263/20
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
129 words
A method of rolling a rolled material widthwise thereof, comprising the steps of: shaping a lengthwise end portion of the rolled material by compression working to form therein a progressively reducing width portion in which the width is progressively reduced in going toward the end of the rolled material, and a uniform width portion contiguous with the progressively reducing width portion and having a width equal to the minimum width of the progressively reducing width portion between its end contiguous with the progressively reducing width portion and the end of the rolled material, in such a manner that said uniform width portion has a length at least over 1/3 the width of the rolled material before having its end portion shaped; and thereafter rolling the rolled material widthwise thereof.
Claim 2
Independent Claim
129 words
A method of rolling a rolled material widthwise thereof, comprising the steps of: shaping a lengthwise end portion of the rolled material by compression working to form therein a progressively reducing width portion in which the width is progressively reduced in going toward the end of the rolled material, and a uniform width portion contiguous with the progressively reducing width portion and having a width equal to the minimum width of the progressively reducing width portion between its end contiguous with the progressively reducing width portion and the end of the rolled material, in such a manner that said uniform width portion has a length at least over 1/3 the width of the rolled material before having its end portion shaped; and thereafter rolling the rolled material widthwise thereof.
Claim 3
Dependent Claim
60 words
A method as claimed in claim 1, wherein the end portion of the rolled material is shaped by compression working in said compression working step in such a manner that the amount reduced in width in forming said uniform width portion is at least over 3/4 the total amount of rolling reduction in width obtained in said widthwise rolling step.
Claim 4
Independent Claim
167 words
A method of rolling a rolled material in the form of a flat metal having a large width as contrasted with the thickness, such as a slab of metal, widthwise thereof, comprising the steps of: shaping at least one of a leading end portion and a trailing end portion of the rolled material by compression working while therolled material remains stationary to form therein a progressively reducing width portion in which the width is progressively reduced in going toward the end of the rolled material, and a uniform width portion contiguous with the progressively reducing width portion and having a width equal to the minimum width of the progressively reducing width portion between its end contiguous with the progressively reducing width portion and the end of the rolled material, in such a manner that said uniform width portion has a length at least over 1/3 the width of the rolled material before having at least one end portion thereof shaped; and rolling the rolled material widthwise thereof.
Claim 5
Independent Claim
167 words
A method of rolling a rolled material in the form of a flat metal having a large width as contrasted with the thickness, such as a slab of metal, widthwise thereof, comprising the steps of: shaping at least one of a leading end portion and a trailing end portion of the rolled material by compression working while therolled material remains stationary to form therein a progressively reducing width portion in which the width is progressively reduced in going toward the end of the rolled material, and a uniform width portion contiguous with the progressively reducing width portion and having a width equal to the minimum width of the progressively reducing width portion between its end contiguous with the progressively reducing width portion and the end of the rolled material, in such a manner that said uniform width portion has a length at least over 1/3 the width of the rolled material before having at least one end portion thereof shaped; and rolling the rolled material widthwise thereof.
Claim 6
Dependent Claim
70 words
A method as claimed in claim 3, wherein at least one of the lengthwise leading end portion and trailing end portion of the rolled material is shaped by compression working in said compression working step in such a manner that the amount reduced in width in forming said uniform width portions is at least over 3/4 the total amount of rolling reduction in width obtained in said widthwise rolling step.
Claim 7
Dependent Claim
30 words
A method as claimed in claim 1 or claim 3, wherein said step of shaping by compression working is performed while restraining the widthwise edge portions from increasing in thickness.
Claim 8
Dependent Claim
39 words
A method as claimed in claim 5, wherein said step of shaping by compression working is performed by engaging simultaneously the widthwise central portion of the material on opposite sides thereof between the endportion to prevent buckling during shaping.
Claim 9
Dependent Claim
43 words
A method as claimed in claim 1 or claim 3, wherein said step of shaping by compression working is performed by simultaneously engaging the widthwise central portion of the material on opposite sides thereof between the end portion to prevent buckling during shaping.
Claim 10
Dependent Claim
45 words
A method as claimed in claim 1 or claim 3, wherein said step of shaping by compression working is performed by reciprocating a pair of shaping tool members widthwise into the rolled material while maintaining no lengthwise movement between the tool members and rolled material.
Claim 11
Dependent Claim
53 words
A method as claimed in claim 1 or claim 3, wherein said step of shaping by compression working is performed by providing angle of inclination in a position in which the width begins to decrease, that is less than or equal to the biting angle of the rolls performing said step of rolling.
Claim 12
Independent Claim
308 words
An apparatus for rolling a rolled material widthwise thereof comprising: a widthwise rolling mill for rolling the rolled material widthwise thereof; and a working device comprising shaping means and pressing means; said shaping means being located on at least one of the upstream side and the downstream side of said widthwise rolling mill with respect to the direction of movement of the rolled material being rolled, said shaping means comprising a pair of shaping tool members configured for shaping a lengthwise end portion of the rolled material by compression working in such a manner that the lengthwise end portion has a progressively reducing width portion in which the width is progressively reduced in going toward the end of the rolled material, and a uniform width portion contiguous with the progressively reducing width portion and having a width equal to the minimum width of the progressively reducing width portion between its end contiguous with the progressively reducing width portion and the end of the rolled material, in such a manner that said uniform width portion has a length at least over 1/3 the width of the rolled material before having its end portion shaped; said pressing means being operative to urge said shaping means to move toward and away from the rolled material widthwise thereof; and said pair of shaping tool members of said shaping means each comprising substantially symmetrical inclined portions inclined with respect to the center line of the rolled material for shaping both the leading end portion and the trailing end portion of the rolled material to form the progressively reducing width portion therein, and a parallel portion interposed between the inclined portions to form the uniform width portion disposed between the progressively reducing width portion and the end of the rolled material, said parallel portion being parallel to the center line of the rolled material.
Claim 13
Independent Claim
308 words
An apparatus for rolling a rolled material widthwise thereof comprising: a widthwise rolling mill for rolling the rolled material widthwise thereof; and a working device comprising shaping means and pressing means; said shaping means being located on at least one of the upstream side and the downstream side of said widthwise rolling mill with respect to the direction of movement of the rolled material being rolled, said shaping means comprising a pair of shaping tool members configured for shaping a lengthwise end portion of the rolled material by compression working in such a manner that the lengthwise end portion has a progressively reducing width portion in which the width is progressively reduced in going toward the end of the rolled material, and a uniform width portion contiguous with the progressively reducing width portion and having a width equal to the minimum width of the progressively reducing width portion between its end contiguous with the progressively reducing width portion and the end of the rolled material, in such a manner that said uniform width portion has a length at least over 1/3 the width of the rolled material before having its end portion shaped; said pressing means being operative to urge said shaping means to move toward and away from the rolled material widthwise thereof; and said pair of shaping tool members of said shaping means each comprising substantially symmetrical inclined portions inclined with respect to the center line of the rolled material for shaping both the leading end portion and the trailing end portion of the rolled material to form the progressively reducing width portion therein, and a parallel portion interposed between the inclined portions to form the uniform width portion disposed between the progressively reducing width portion and the end of the rolled material, said parallel portion being parallel to the center line of the rolled material.
Claim 14
Independent Claim
334 words
An apparatus for rolling a rolled material in the form of a flat metal having a large width as contrasted with the thickness, such as a slab of metal, widthwise thereof, comprising: a widthwise rolling mill for rolling the material widthwise thereof; and a working device comprising shaping means and pressing means; said shaping means being located on at least one of the upstream side and the downstream side of said widthwise rolling mill with respect to the direction of movement of the rolled material being rolled, said shaping means comprising a pair of shaping tool members configured for shaping a lengthwise end portion of the rolled material by compression working while the rolled material remains stationary in such a manner that the lengthwise end portion has a progressively reducing width portion in which the width is progressively reduced in going toward the end of the rolled material, and a uniform width portion contiguous with the progressively reducing width portion and having a width equal to the minimum width of the progressively reducing width portion between its end contiguous with the progressively reducing width portion and the end of the rolled material, in such a manner that said uniform width portion has a length at least over 1/3 the width of the rolled material before having its end portion shaped; said pressing means being operative to urge said shaping means to move toward and away from the rolled material widthwise thereof; and said pair of shaping tool members of said shaping means each comprising substantially symmetrical inclined portions inclined with respect to the center line of the rolled material for shaping both the leading end portion and the trailing end portion of the rolled material to form the progressively reducing width portion therein, and a parallel portion interposed between said inclined portions to form the uniform width portion between the progressively reducing width portion and the end of the rolled material, said parallel portion being parallel to the center line of the rolled material.
Claim 15
Independent Claim
334 words
An apparatus for rolling a rolled material in the form of a flat metal having a large width as contrasted with the thickness, such as a slab of metal, widthwise thereof, comprising: a widthwise rolling mill for rolling the material widthwise thereof; and a working device comprising shaping means and pressing means; said shaping means being located on at least one of the upstream side and the downstream side of said widthwise rolling mill with respect to the direction of movement of the rolled material being rolled, said shaping means comprising a pair of shaping tool members configured for shaping a lengthwise end portion of the rolled material by compression working while the rolled material remains stationary in such a manner that the lengthwise end portion has a progressively reducing width portion in which the width is progressively reduced in going toward the end of the rolled material, and a uniform width portion contiguous with the progressively reducing width portion and having a width equal to the minimum width of the progressively reducing width portion between its end contiguous with the progressively reducing width portion and the end of the rolled material, in such a manner that said uniform width portion has a length at least over 1/3 the width of the rolled material before having its end portion shaped; said pressing means being operative to urge said shaping means to move toward and away from the rolled material widthwise thereof; and said pair of shaping tool members of said shaping means each comprising substantially symmetrical inclined portions inclined with respect to the center line of the rolled material for shaping both the leading end portion and the trailing end portion of the rolled material to form the progressively reducing width portion therein, and a parallel portion interposed between said inclined portions to form the uniform width portion between the progressively reducing width portion and the end of the rolled material, said parallel portion being parallel to the center line of the rolled material.
Claim 16
Dependent Claim
84 words
An apparatus as claimed in claim 11, wherein said apparatus comprises a plurality of working devices, one working device being located upstream of said widthwise rolling mill for shaping the leading end portion of the rolling material by compression working, and the other working device being located upstream of said one working device for shaping the trailing end portion of the rolled material by compression working, whereby the leading end portion and the trailing end portion of the rolled material can be simultaneously shaped.
Claim 17
Dependent Claim
53 words
An apparatus as claimed in claim 11, wherein said pair of shaping tool members of said shaping means are each formed with a groove in the form of a letter U in lying position in cross section, whereby each end portion of the rolled material can be held in one of the grooves.
Claim 18
Dependent Claim
31 words
An apparatus as claimed in claim 11, further comprising keep means for pressing each end portion of the rolled material thicknesswise thereof when the end portions are shaped by compression working.
Claim 19
Dependent Claim
56 words
An apparatus as claimed in claim 10 or claim 11, wherein said widthwise rolling mill has a fixed roll bite angle; and wherein said shaping tool members have an angle of inclination in a position in which the width begins to decrease for the rolled material, which is less than or equal to said biting angle.
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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) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |