JPS55165207A - Detecting method for plug in pipe forming mill - Google Patents

Detecting method for plug in pipe forming mill

Info

Publication number
JPS55165207A
JPS55165207A JP7219279A JP7219279A JPS55165207A JP S55165207 A JPS55165207 A JP S55165207A JP 7219279 A JP7219279 A JP 7219279A JP 7219279 A JP7219279 A JP 7219279A JP S55165207 A JPS55165207 A JP S55165207A
Authority
JP
Japan
Prior art keywords
plug
input
input port
voltage
terminals
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
JP7219279A
Other languages
Japanese (ja)
Other versions
JPS6139121B2 (en
Inventor
Yoichi Naganuma
Hajime Suzuki
Masaru Arai
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 JP7219279A priority Critical patent/JPS55165207A/en
Publication of JPS55165207A publication Critical patent/JPS55165207A/en
Publication of JPS6139121B2 publication Critical patent/JPS6139121B2/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
    • 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
    • B21B17/08—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills
    • B21B17/12—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills in a discontinuous process, e.g. plug-rolling mills

Landscapes

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

Abstract

PURPOSE:To check the faulty movement of the plug at every rolling pass, on purpose to contrive the reduction of the line trouble, by installing the metal detector utilizing the high frequency electric current before and behind the plug pack, at applying the rolling work to the inner surface of the seamless pipe. CONSTITUTION:When the rolled pipe T runs out while being supported by the thrust bar 2, the high frequency electric power amplifier 6 supplies the electricity to the signal transmitting coils' terminals 7a, 7b to generate the magnetic field, in order to judge whether the plug 3 is correctly supported in the plug pack 4. Hereby, the signal receiving coils' terminals 8a, 8b detect the induced voltage equivalent to the size of the interposed metal. This induced voltage is amplified and rectified and converted to the DC signal which is input to the input port 14. On the other hand, the DC voltage, from the pilot generator 12 directly connected to the thrust block 1, is input to the input port 14 through the voltage/frequency converter 13. The output of the input port 14 is input to the computer 15 and is compared with the reference pattern; then, the anomaly is displayed on the display unit 17 through the output port 16.
JP7219279A 1979-06-11 1979-06-11 Detecting method for plug in pipe forming mill Granted JPS55165207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7219279A JPS55165207A (en) 1979-06-11 1979-06-11 Detecting method for plug in pipe forming mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7219279A JPS55165207A (en) 1979-06-11 1979-06-11 Detecting method for plug in pipe forming mill

Publications (2)

Publication Number Publication Date
JPS55165207A true JPS55165207A (en) 1980-12-23
JPS6139121B2 JPS6139121B2 (en) 1986-09-02

Family

ID=13482096

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7219279A Granted JPS55165207A (en) 1979-06-11 1979-06-11 Detecting method for plug in pipe forming mill

Country Status (1)

Country Link
JP (1) JPS55165207A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858932A (en) * 1981-09-14 1983-04-07 クラウス・ブランカンプ Method of detecting deviation between process of deformation of workpiece periodically repeated and standard process
JP2008221267A (en) * 2007-03-12 2008-09-25 Jfe Steel Kk Plug bar center detecting apparatus for seamless steel tube
US9221058B2 (en) 2010-09-14 2015-12-29 Siemens Aktiengesellschaft Determining the fineness of a ground material, in particular an ore, in a mill
CN106807755A (en) * 2017-01-06 2017-06-09 南通市嘉业机械制造有限公司 A kind of piercing plug for seamless steel tubes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109092898B (en) * 2018-06-08 2020-09-04 太原科技大学 Plastic processing method for long high-performance magnesium alloy seamless pipe

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858932A (en) * 1981-09-14 1983-04-07 クラウス・ブランカンプ Method of detecting deviation between process of deformation of workpiece periodically repeated and standard process
JP2008221267A (en) * 2007-03-12 2008-09-25 Jfe Steel Kk Plug bar center detecting apparatus for seamless steel tube
US9221058B2 (en) 2010-09-14 2015-12-29 Siemens Aktiengesellschaft Determining the fineness of a ground material, in particular an ore, in a mill
CN106807755A (en) * 2017-01-06 2017-06-09 南通市嘉业机械制造有限公司 A kind of piercing plug for seamless steel tubes
CN106807755B (en) * 2017-01-06 2018-08-17 南通市嘉业机械制造有限公司 A kind of piercing plug for seamless steel tubes

Also Published As

Publication number Publication date
JPS6139121B2 (en) 1986-09-02

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