JPS5489960A - Controlling method for roll crown in rolling mill - Google Patents

Controlling method for roll crown in rolling mill

Info

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
Application number
JP15925077A
Other languages
Japanese (ja)
Inventor
Ichiroku Chiba
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IHI Corp
Original Assignee
IHI Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IHI Corp filed Critical IHI Corp
Priority to JP15925077A priority Critical patent/JPS5489960A/en
Publication of JPS5489960A publication Critical patent/JPS5489960A/en
Pending legal-status Critical Current

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  • 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
JP15925077A 1977-12-27 1977-12-27 Controlling method for roll crown in rolling mill Pending JPS5489960A (en)

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)

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