JPS57139403A - Universal closed rolling method - Google Patents
Universal closed rolling methodInfo
- Publication number
- JPS57139403A JPS57139403A JP2592381A JP2592381A JPS57139403A JP S57139403 A JPS57139403 A JP S57139403A JP 2592381 A JP2592381 A JP 2592381A JP 2592381 A JP2592381 A JP 2592381A JP S57139403 A JPS57139403 A JP S57139403A
- Authority
- JP
- Japan
- Prior art keywords
- rolls
- deltav
- caliber
- lower horizontal
- spring
- 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
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
- B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/095—U-or channel sections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
PURPOSE:To decrease the spring back of flanges and to improve dimensional accuracy in closed rolling by constituting a caliber with upper and lower horizontal rolls, and adjusting the axial direction of the upper and lower horizontal rolls with right and left vertical rolls. CONSTITUTION:A caliber 3 is formed by combining upper and lower horizontal rolls 1, 2, and a kal clearance (g) is taken between upper and lower roll sleeves 6, 7. On the other hand, right and left vertical rolls 8, 9 are disposed on both side faces of the sleeves 6, 7, and these are so arranged as to attain DELTAV<g-deltaV when the space between the rolls 6, 7 is defined as DELTAV, and the spring quantity thereof as deltaV. When hot steel 10 is passed through the caliber 3 in this state and is rolld, the steel 10 deforms to exert reaction upon the rolls 1, 2, then the rolls 1, 2 try to deform but the displacement in the axial direction of the rolls 1, 2 is regulated by the rolls 8, 9, whereby the mill spring is kept extremely low and the rolling in conformity roughly with the caliber 3 is accomplished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2592381A JPS57139403A (en) | 1981-02-24 | 1981-02-24 | Universal closed rolling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2592381A JPS57139403A (en) | 1981-02-24 | 1981-02-24 | Universal closed rolling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57139403A true JPS57139403A (en) | 1982-08-28 |
Family
ID=12179293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2592381A Pending JPS57139403A (en) | 1981-02-24 | 1981-02-24 | Universal closed rolling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57139403A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6587405B1 (en) * | 1998-11-25 | 2003-07-01 | Micron Technology, Inc. | Linear optical disk changer with side switching capabilities |
| US6603715B1 (en) | 1998-11-25 | 2003-08-05 | Micron Technology, Inc. | Optical disk changer with side switching capabilities |
-
1981
- 1981-02-24 JP JP2592381A patent/JPS57139403A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6587405B1 (en) * | 1998-11-25 | 2003-07-01 | Micron Technology, Inc. | Linear optical disk changer with side switching capabilities |
| US6603715B1 (en) | 1998-11-25 | 2003-08-05 | Micron Technology, Inc. | Optical disk changer with side switching capabilities |
| US6707769B2 (en) | 1998-11-25 | 2004-03-16 | Micron Technology, Inc. | Methods for translating and reading optical disks |
| US7457205B2 (en) | 1998-11-25 | 2008-11-25 | Micron Technology, Inc. | Linear optical disk changer with side switching capabilities |
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