JPS5489960A - Controlling method for roll crown in rolling mill - Google Patents
Controlling method for roll crown in rolling millInfo
- Publication number
- JPS5489960A JPS5489960A JP15925077A JP15925077A JPS5489960A JP S5489960 A JPS5489960 A JP S5489960A JP 15925077 A JP15925077 A JP 15925077A JP 15925077 A JP15925077 A JP 15925077A JP S5489960 A JPS5489960 A JP S5489960A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- bending moment
- diameter
- axis
- axes
- 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
Landscapes
- Control Of Metal Rolling (AREA)
Abstract
PURPOSE: To make controllable the roll crown over a broad range, by arranging the roll axes of a pair of work rolls with one large diameter and another small diameter, on purpose to afford the heavy bending moment against the same interaxes distance.
CONSTITUTION: The bending moment pl given to the roll axes is shown by the formula Pl=(π/32)d2 × (1/δb), where δb is the allowable bending stress of the axis and is specified for its material, and (d) is the diameter of the axis. Thereupon, the diameter d1 of the axis 11 of the upper work roll 1 is made 23cm which is larger than the conventional size d=20cm, and the diameter d2 of the axis 12 of the lower work roll 2 is made 17cm that is (d1-d) smaller than the conventional size 20cm. Hereby, the sum of the bending moment allowable for the axes 11 and 12 becomes 1676.8 × (1/δb) which is larger than the allowable bending moment 1570.8 × (1/δb) for conventional size 20cm for both of upper and lower axes. According to this method, the allowable bending moment can be increased and the roll crown can be controlled over a broad range.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15925077A JPS5489960A (en) | 1977-12-27 | 1977-12-27 | Controlling method for roll crown in rolling mill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15925077A JPS5489960A (en) | 1977-12-27 | 1977-12-27 | Controlling method for roll crown in rolling mill |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5489960A true JPS5489960A (en) | 1979-07-17 |
Family
ID=15689628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15925077A Pending JPS5489960A (en) | 1977-12-27 | 1977-12-27 | Controlling method for roll crown in rolling mill |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5489960A (en) |
-
1977
- 1977-12-27 JP JP15925077A patent/JPS5489960A/en active Pending
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