US4402206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rolling slabs for the manufacture of beam blanks and a roll to be used therefor
Assignee: JFE Steel Corp
•
Filing: 1981-05-20
•
Granted: 1983-09-06
•
Expires: 2001-05-20
Abstract
Abstract A method of rolling raw materials inclusive of slabs for the manufacture of beam blanks, and a roll to be used therefor, are disclosed. This method includes the steps of (a) subjecting a raw material, whose section consists of a web portion and a flange portion(s) having a width wider than the thickness of the web portion, to such a partial rolling that the web portion is partially rolled at regions inclusive of at least the joints of the flange portion(s), except the remaining central region, among a plurality of regions divided in the widthwise direction of the web portion, and (b) subjecting only the remaining central regions to a rolling. In the practice of this method, there is used a roll consisting of a single cylindrical drum including a first segment and a second segment arranged side by side to each other; the first segment having at least one relief of circumferential grooves facing the web portion; a plurality of rolling collars separated apart from each other through the relief in the axial direction, and serving for the partial rolling of the web portion, and a circumferential groove(s) dividing a side of the rolling collar for the web portion near the joint and enclosing the flange portion; and the second segment having a pair of reliefs each composed of a wider circumferential groove facing the flange portion, and a rolling drum extending between the reliefs and serving for the rolling of only the remaining central region of the web portion.
Inventors
- 👤 Tadaaki Yanazawa
- 👤 Teruaki Tanaka
- 👤 Masashi Yamashita
- 👤 Takashi Ehiro
- 👤 Hiroshi Okumura
- 👤 Shinzo Saito
- 👤 Takashi Kusaba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:43
CPC Classifications
B; B21; B21B; B21B1/00; B21B1/08; B21B1/088; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667; D06M15/673
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
99 words
A method of rolling raw materials inclusive of slabs for the manufacture of beam blanks, which comprises the steps of (a) subjecting a raw material whose section consists of a web portion and a flange portion, to a partial rolling such that said web portion is partially rolled at regions inclusive of at least joints of said flange portion, except a remaining central region among a plurality of regions divided in the widthwise direction of said web portion, and (b) subjecting only the remaining central region to a rolling without rolling said regions rolled in the above step (a).
Claim 2
Independent Claim
99 words
A method of rolling raw materials inclusive of slabs for the manufacture of beam blanks, which comprises the steps of (a) subjecting a raw material whose section consists of a web portion and a flange portion, to a partial rolling such that said web portion is partially rolled at regions inclusive of at least joints of said flange portion, except a remaining central region among a plurality of regions divided in the widthwise direction of said web portion, and (b) subjecting only the remaining central region to a rolling without rolling said regions rolled in the above step (a).
Claim 3
Independent Claim
142 words
A method of rolling raw materials inclusive of slabs for the manufacture of beam blanks, which comprises the steps of (a) subjecting a raw material, whose section consists of a web portion and a flange portion having a width wider than the thickness of said web portion, to a partial rolling such that said web portion is partially rolled at regions inclusive of at least joints of said flange portion, except a remaining central region among a plurality of regions divided in the wdithwise direction of said web portion, (b) subjecting only the remaining central region to a rolling, without rolling said regions rolled in the above step (a), (c) subjecting said flange portion to a rolling by pressing said flange portion toward said web portion, and (d) repeating each of the steps (a), (b) and (c) at one or more passes.
Claim 4
Independent Claim
142 words
A method of rolling raw materials inclusive of slabs for the manufacture of beam blanks, which comprises the steps of (a) subjecting a raw material, whose section consists of a web portion and a flange portion having a width wider than the thickness of said web portion, to a partial rolling such that said web portion is partially rolled at regions inclusive of at least joints of said flange portion, except a remaining central region among a plurality of regions divided in the wdithwise direction of said web portion, (b) subjecting only the remaining central region to a rolling, without rolling said regions rolled in the above step (a), (c) subjecting said flange portion to a rolling by pressing said flange portion toward said web portion, and (d) repeating each of the steps (a), (b) and (c) at one or more passes.
Claim 5
Dependent Claim
18 words
The method according to claim 2, wherein said partial rolling comprises shaping caliber rolling of said flange portion.
Claim 6
Dependent Claim
219 words
A roll for rolling raw materials inclusive of slabs for the manufacture of beam blanks, which includes a single cylindrical drum comprising a first segment and a second segment arranged side by side to each other, said first segment having at least one relief of circumferential grooves facing a web portion of raw material having a sectional shape consisting of a web portion divided in the widthwise direction into a plurality of regions, and a flange portion having a width wider than the thickness of said web portion, a plurality of rolling collars separated apart from each other by said at least one relief in the axial direction and serving for a partial rolling such that said web portion is partially rolled at regions inclusive of at least joints of said flange portion, except a remaining central region among the plurality of regions of said web portion, and a circumferential groove dividing a side of one of said rolling collars for said web portion near the joints of said flange portion and enclosing said flange portion, and said second segment having a pair of reliefs each comprising a wider circumferential groove facing said flange portion, and a rolling drum extending between said pair of reliefs and serving for a rolling of the remaining central region of said web portion.
Claim 7
Dependent Claim
219 words
A roll for rolling raw materials inclusive of slabs for the manufacture of beam blanks, which includes a single cylindrical drum comprising a first segment and a second segment arranged side by side to each other, said first segment having at least one relief of circumferential grooves facing a web portion of raw material having a sectional shape consisting of a web portion divided in the widthwise direction into a plurality of regions, and a flange portion having a width wider than the thickness of said web portion, a plurality of rolling collars separated apart from each other by said at least one relief in the axial direction and serving for a partial rolling such that said web portion is partially rolled at regions inclusive of at least joints of said flange portion, except a remaining central region among the plurality of regions of said web portion, and a circumferential groove dividing a side of one of said rolling collars for said web portion near the joints of said flange portion and enclosing said flange portion, and said second segment having a pair of reliefs each comprising a wider circumferential groove facing said flange portion, and a rolling drum extending between said pair of reliefs and serving for a rolling of the remaining central region of said web portion.
Claim 8
Dependent Claim
37 words
The roll according to claim 4, wherein, each of said pair of reliefs of said second segment comprises a caliber for rolling of said flange portion under the rolling of said web portion in the widthwise direction.
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) | 1986-09-05 | 1987-03-07 | 1987-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-05 | 1991-03-07 | 1991-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-05 | 1995-03-07 | 1995-09-06 | $7700.00 | Window Closed / Lapsed |