JPH01192439A - Method for setting ratio roll diameter of rolling roll in manufacturing tapered rod - Google Patents
Method for setting ratio roll diameter of rolling roll in manufacturing tapered rodInfo
- Publication number
- JPH01192439A JPH01192439A JP1632488A JP1632488A JPH01192439A JP H01192439 A JPH01192439 A JP H01192439A JP 1632488 A JP1632488 A JP 1632488A JP 1632488 A JP1632488 A JP 1632488A JP H01192439 A JPH01192439 A JP H01192439A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- diameter
- roll
- tapered rod
- rod
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title abstract 12
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 101700078171 KNTC1 Proteins 0.000 abstract 2
Abstract
PURPOSE: To improve the production efficiency by the rolling of a tapered rod having a high degressive rate by specifying the roll diameter ratio of the ratio of the diameter of a 1st pass rolling roll to the bar stock diameter prior to rolling.
CONSTITUTION: A bar rod 1 is rolled in a flat sectional shape by a pair of rolling rolls 2 of a 1st pass and this bar rod 1 is formed by its rolling in the tapered rod 10 having the reduced diameter taper 4 that the diameter becomes smaller according to heading for the rear part from the front part in rolling direction by a pair of rolling rolls 3 of a 2nd pass. In this case the rolling of R≥0.5 is executed with the bar rod diameter prior to rolling being taken as d0, the tapered rod min. diameter after rolling as d1, the degressive rate as R=1-(d1/d0)2, the diameter of 1st pass rolling roll 2 and DR, the ratio roll diameter as δ=DR/d0. In this case the ratio roll diameter is set as δ≤2,540/lIOR (l: bottom of natural logarithm).
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1632488A JPH0714538B2 (en) | 1988-01-26 | 1988-01-26 | Method for setting specific roll diameter of rolling roll in manufacturing taper rod |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1632488A JPH0714538B2 (en) | 1988-01-26 | 1988-01-26 | Method for setting specific roll diameter of rolling roll in manufacturing taper rod |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01192439A true JPH01192439A (en) | 1989-08-02 |
JPH0714538B2 JPH0714538B2 (en) | 1995-02-22 |
Family
ID=11913288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1632488A Expired - Lifetime JPH0714538B2 (en) | 1988-01-26 | 1988-01-26 | Method for setting specific roll diameter of rolling roll in manufacturing taper rod |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0714538B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100423422B1 (en) * | 1999-11-12 | 2004-03-19 | 주식회사 포스코 | Hot Rolling Method for Preparing Taper Bar |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8080791B2 (en) | 2008-12-12 | 2011-12-20 | Fei Company | X-ray detector for electron microscope |
-
1988
- 1988-01-26 JP JP1632488A patent/JPH0714538B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100423422B1 (en) * | 1999-11-12 | 2004-03-19 | 주식회사 포스코 | Hot Rolling Method for Preparing Taper Bar |
Also Published As
Publication number | Publication date |
---|---|
JPH0714538B2 (en) | 1995-02-22 |
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