JPS57160508A - Automatic thickness controller of seamless pipe - Google Patents

Automatic thickness controller of seamless pipe

Info

Publication number
JPS57160508A
JPS57160508A JP56045461A JP4546181A JPS57160508A JP S57160508 A JPS57160508 A JP S57160508A JP 56045461 A JP56045461 A JP 56045461A JP 4546181 A JP4546181 A JP 4546181A JP S57160508 A JPS57160508 A JP S57160508A
Authority
JP
Japan
Prior art keywords
sampling pitch
sizer
mill
optimum
waveform
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
JP56045461A
Other languages
Japanese (ja)
Inventor
Michiaki Osada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56045461A priority Critical patent/JPS57160508A/en
Publication of JPS57160508A publication Critical patent/JPS57160508A/en
Pending 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

Landscapes

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

Abstract

PURPOSE:To elevate the automatic thickness control performance of a titled device, by executing waveform-shaping of an entry temperature of a sizer mill, improving in advance the controllability of its sampling control, and also constituting so that an optimum sampling pitch can be set automatically. CONSTITUTION:In a sizer mill of a seamless pipe mill, a deviation of an entry temperature of a pipe which has been acturally measured by an entry thermometer 2 is shaped by a digital waveform shaping circuit having a low-pass filter function 7. That is a temperature waveform which has removed frequency being higher than a sampling pitch of an industrial process computer 8, and noise frequency is obtained, and is utilized as a feedforward controlled variable 12. At the same time, from a ferquency curve in case when a sampling pitch of the computer 8 is analyzed by a spectrum analyzing circuit 7B, an optimum value is derived and is set automatically to an optimum sampling pitch setting circuit 7C. The controlled variable 12 is commanded as a pressing-down correcting value to a hydraulic pressing-down APC 4, and pressure reduction of each sizer stand 1 is controlled.
JP56045461A 1981-03-30 1981-03-30 Automatic thickness controller of seamless pipe Pending JPS57160508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56045461A JPS57160508A (en) 1981-03-30 1981-03-30 Automatic thickness controller of seamless pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56045461A JPS57160508A (en) 1981-03-30 1981-03-30 Automatic thickness controller of seamless pipe

Publications (1)

Publication Number Publication Date
JPS57160508A true JPS57160508A (en) 1982-10-02

Family

ID=12719994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56045461A Pending JPS57160508A (en) 1981-03-30 1981-03-30 Automatic thickness controller of seamless pipe

Country Status (1)

Country Link
JP (1) JPS57160508A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11318511B2 (en) * 2014-09-17 2022-05-03 Primetals Technologies Germany Gmbh Width setting on a finishing train

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11318511B2 (en) * 2014-09-17 2022-05-03 Primetals Technologies Germany Gmbh Width setting on a finishing train

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