JPS54130457A - Perfect restraint type blooming method - Google Patents
Perfect restraint type blooming methodInfo
- Publication number
- JPS54130457A JPS54130457A JP3827478A JP3827478A JPS54130457A JP S54130457 A JPS54130457 A JP S54130457A JP 3827478 A JP3827478 A JP 3827478A JP 3827478 A JP3827478 A JP 3827478A JP S54130457 A JPS54130457 A JP S54130457A
- Authority
- JP
- Japan
- Prior art keywords
- rolled
- caliber
- degrees
- roll
- fallen down
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005336 cracking Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B1/026—Rolling
Abstract
PURPOSE:To prevent the cracking, etc., of the corner, to stabilize the quality, and to improve the yield, in the blooming work, by employing a specially shaped roll for rolling of the material to be rolled, which is restrained from the beginning to the final pass, and is fallen down sideways or inclined. CONSTITUTION:The roll 1 is provided with the caliber I, the caliber II, and the box calibers III, IV; in which, the bottom corner of the caliber I is formed into 45 degrees inclination so as to be able to roll the corner of the material (a) to be rolled; the side taper of the caliber II is formed into an inclined plane by 45 degrees so as to be able to reduce the material (a) into an octagon; and the box calibers III, IV, are provided with dimensions necessary for simultaneous reduction of all planes of top and bottom and both sides of the material (a). The material (a) is rolled into (b) by the caliber I, is fallen down sideways by 90 degrees, and is rolled into (c); next, the material (c) is rolled into (d) and (e) by the caliber II, after being fallen down sideways by 90 degrees; further, the material (e) is rolled into (f) by the box caliber III, being inclined by 45 degrees; and then the material (f) is rolled by the box caliber IV after being fallen down sideways by 90 degrees, and is finished into the product (h) through (g), with specified sectional dimensions. Since the perfect restraint type reduction roll is employed, individual portions of the material (a) to be rolled are reduced under uniform temperature, and the surface defects are reduced, and the yield is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3827478A JPS54130457A (en) | 1978-03-31 | 1978-03-31 | Perfect restraint type blooming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3827478A JPS54130457A (en) | 1978-03-31 | 1978-03-31 | Perfect restraint type blooming method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54130457A true JPS54130457A (en) | 1979-10-09 |
Family
ID=12520721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3827478A Pending JPS54130457A (en) | 1978-03-31 | 1978-03-31 | Perfect restraint type blooming method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54130457A (en) |
-
1978
- 1978-03-31 JP JP3827478A patent/JPS54130457A/en active Pending
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