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 rod

Info

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
Application number
JP1632488A
Other languages
Japanese (ja)
Other versions
JPH0714538B2 (en
Inventor
Yoichi Takahashi
Tomiharu Matsushita
Seiichi Ishikawa
Original Assignee
Kobe Steel Ltd
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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP1632488A priority Critical patent/JPH0714538B2/en
Publication of JPH01192439A publication Critical patent/JPH01192439A/en
Publication of JPH0714538B2 publication Critical patent/JPH0714538B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
JP1632488A 1988-01-26 1988-01-26 Method for setting specific roll diameter of rolling roll in manufacturing taper rod Expired - Lifetime JPH0714538B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8080791B2 (en) 2008-12-12 2011-12-20 Fei Company X-ray detector for electron microscope

Cited By (1)

* Cited by examiner, † Cited by third party
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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