JPS57193219A - Controlling method for mean thickness of pipe in sizing mill - Google Patents

Controlling method for mean thickness of pipe in sizing mill

Info

Publication number
JPS57193219A
JPS57193219A JP56077351A JP7735181A JPS57193219A JP S57193219 A JPS57193219 A JP S57193219A JP 56077351 A JP56077351 A JP 56077351A JP 7735181 A JP7735181 A JP 7735181A JP S57193219 A JPS57193219 A JP S57193219A
Authority
JP
Japan
Prior art keywords
pipe
mean thickness
rolling
delivery
sizing mill
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
JP56077351A
Other languages
Japanese (ja)
Other versions
JPS6111128B2 (en
Inventor
Yoichi Naganuma
Masato Uchida
Sumitada Kakimoto
Yoshiyuki Ebina
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel 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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP56077351A priority Critical patent/JPS57193219A/en
Publication of JPS57193219A publication Critical patent/JPS57193219A/en
Publication of JPS6111128B2 publication Critical patent/JPS6111128B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/78—Control of tube rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/06—Rolling hollow basic material, e.g. Assel mills
    • B21B19/10—Finishing, e.g. smoothing, sizing, reeling

Abstract

PURPOSE:To make a blank pipe mean thickness value of delivery of a sizing mill constant, by applying a thickness control by known motor rotational frequency or speed ratio, by a stretch reducer, to the sizing mill of a Mannesmann plug mill pipe manufacturing method. CONSTITUTION:As for each blank material from a furnace 1, its number and unit weight W are stored in a device 5, and a length actual value LPLM after rolling a blank pipe by a device 2 is inputted to the device 5. Also, length LRM after rolling by a device 3 is inputted and stored in the device 5 in the same way. For instance, when a mean thickness value is shown by weight (unit weight) per unit length, the mean thickness value of delivery of the devices 2, 3 becomes W/LPLM and W/LRM, respectively, and a device 4 is also shown by W/LSM in the same way. When the tube has reached in front of the device 4, a motor rotational frequency ratio is calculated by the expressionI(expression II: a correcting term shown by a deviation against a mean thickness target value of the pipe of delivery of the device 4 which has finished rolling, (h): a parameter, (i): a passing order of pipe of each rolling or device 3, and in case of the latter, the expressionIis used by 2 pieces), and a command is given to the device and is set.
JP56077351A 1981-05-23 1981-05-23 Controlling method for mean thickness of pipe in sizing mill Granted JPS57193219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56077351A JPS57193219A (en) 1981-05-23 1981-05-23 Controlling method for mean thickness of pipe in sizing mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56077351A JPS57193219A (en) 1981-05-23 1981-05-23 Controlling method for mean thickness of pipe in sizing mill

Publications (2)

Publication Number Publication Date
JPS57193219A true JPS57193219A (en) 1982-11-27
JPS6111128B2 JPS6111128B2 (en) 1986-04-01

Family

ID=13631486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56077351A Granted JPS57193219A (en) 1981-05-23 1981-05-23 Controlling method for mean thickness of pipe in sizing mill

Country Status (1)

Country Link
JP (1) JPS57193219A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009277869A (en) * 2008-05-14 2009-11-26 Mitsubishi Electric Corp On-load tap changer
CN112823064A (en) * 2018-10-11 2021-05-18 Sms集团有限公司 Wall thickness control during pipe tension reducing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0343710A (en) * 1989-07-11 1991-02-25 Murai:Kk Structure and method for coupling component for spectacles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009277869A (en) * 2008-05-14 2009-11-26 Mitsubishi Electric Corp On-load tap changer
CN112823064A (en) * 2018-10-11 2021-05-18 Sms集团有限公司 Wall thickness control during pipe tension reducing

Also Published As

Publication number Publication date
JPS6111128B2 (en) 1986-04-01

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