GB1158754A - Process for Stretch-Reducing Tubes - Google Patents

Process for Stretch-Reducing Tubes

Info

Publication number
GB1158754A
GB1158754A GB1314367A GB1314367A GB1158754A GB 1158754 A GB1158754 A GB 1158754A GB 1314367 A GB1314367 A GB 1314367A GB 1314367 A GB1314367 A GB 1314367A GB 1158754 A GB1158754 A GB 1158754A
Authority
GB
United Kingdom
Prior art keywords
tube
measuring
thickness
batch
stretch
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.)
Expired
Application number
GB1314367A
Inventor
Friedrich Kocks
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.)
Friedrich Kocks GmbH and Co
Original Assignee
Friedrich Kocks GmbH and Co
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 Friedrich Kocks GmbH and Co filed Critical Friedrich Kocks GmbH and Co
Priority to GB1314367A priority Critical patent/GB1158754A/en
Priority to FR100384A priority patent/FR1515654A/en
Publication of GB1158754A publication Critical patent/GB1158754A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills
    • 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
    • B21B2261/00—Product parameters
    • B21B2261/02—Transverse dimensions
    • B21B2261/04—Thickness, gauge

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

1,158,754. Measuring thickness electrically. KOCKS-WERMELSKIRCHEN G.m.b.H. March 21, 1967, No. 13143/67. Heading G1N. [Also in Division G3] The wall thickness of a metallic tube is measured by encircling the tube by a coil carrying current at medium frequency and measuring the current or the power absorbed by the coil. Alternatively the thickness may be determined indirectly by measuring the electrical resistance of a length of tube in a circuit between live feeder rollers, the length of tube forming one arm of a wheatstone bridge circuit. The arrangement is used in a programmed control system to develop a series of control signals representative of individual variations of wall thickness from the average of a batch which signals are fed sequentially into a store varying the stretch unparted in a multi-stand reduction mill to the individual tubes, fed in the same sequence so as to minimize variations within each batch.
GB1314367A 1967-03-21 1967-03-21 Process for Stretch-Reducing Tubes Expired GB1158754A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1314367A GB1158754A (en) 1967-03-21 1967-03-21 Process for Stretch-Reducing Tubes
FR100384A FR1515654A (en) 1967-03-21 1967-03-28 Tube reduction process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1314367A GB1158754A (en) 1967-03-21 1967-03-21 Process for Stretch-Reducing Tubes

Publications (1)

Publication Number Publication Date
GB1158754A true GB1158754A (en) 1969-07-16

Family

ID=10017645

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1314367A Expired GB1158754A (en) 1967-03-21 1967-03-21 Process for Stretch-Reducing Tubes

Country Status (1)

Country Link
GB (1) GB1158754A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272204A2 (en) * 1986-12-18 1988-06-22 MANNESMANN Aktiengesellschaft Method for controlling the thickness of tubewall
CN112823064A (en) * 2018-10-11 2021-05-18 Sms集团有限公司 Wall thickness control during pipe tension reducing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272204A2 (en) * 1986-12-18 1988-06-22 MANNESMANN Aktiengesellschaft Method for controlling the thickness of tubewall
EP0272204A3 (en) * 1986-12-18 1988-11-09 Mannesmann Aktiengesellschaft Method for controlling the thickness of tubewall
CN112823064A (en) * 2018-10-11 2021-05-18 Sms集团有限公司 Wall thickness control during pipe tension reducing

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PE Patent expired