JPS6475171A - Scarfer - Google Patents

Scarfer

Info

Publication number
JPS6475171A
JPS6475171A JP23397687A JP23397687A JPS6475171A JP S6475171 A JPS6475171 A JP S6475171A JP 23397687 A JP23397687 A JP 23397687A JP 23397687 A JP23397687 A JP 23397687A JP S6475171 A JPS6475171 A JP S6475171A
Authority
JP
Japan
Prior art keywords
billet
scarved
length
scarfing
control device
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
JP23397687A
Other languages
Japanese (ja)
Inventor
Akio Shiaku
Masahiro Matsuo
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP23397687A priority Critical patent/JPS6475171A/en
Publication of JPS6475171A publication Critical patent/JPS6475171A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE:To check the generation of a roll over and to reduce the repairing work of the following stage by detecting the length of a billet from the surface side of the billet subjected to scarfing and actuating a gas injection nozzle at the time when an unscarfing part becomes in the specified length from the rear end of the billet. CONSTITUTION:The end part 16 of a billet 10 is preheated by jetting a coke gas flame from scarfing nozzles 14, 15 and the surface 41 thereof is scarved by transferring the billet 10 as well as increasing the oxygen gas pressure. The full length L of the billet 10 is measured by a 1st measuring roll 19. When the surface 41 and side face 42 are scarved by the scarfing nozzle 14, the distance L1 of the billet 10 tip and a 2nd measuring roll 20 is continuously measured and the signal thereof is inputted to a control device 40. The length L-L1-L2 of the rear end of the billet 10 and a scarfer main body 5 is continuously operated by the control device 40. At the time when the result thereof becomes equal to the set value, an inert gas is injected from a gas injection nozzle 35 to move the scarved melted body.
JP23397687A 1987-09-18 1987-09-18 Scarfer Pending JPS6475171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23397687A JPS6475171A (en) 1987-09-18 1987-09-18 Scarfer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23397687A JPS6475171A (en) 1987-09-18 1987-09-18 Scarfer

Publications (1)

Publication Number Publication Date
JPS6475171A true JPS6475171A (en) 1989-03-20

Family

ID=16963586

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23397687A Pending JPS6475171A (en) 1987-09-18 1987-09-18 Scarfer

Country Status (1)

Country Link
JP (1) JPS6475171A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008274716A (en) * 2007-05-07 2008-11-13 Daikin Ind Ltd Operating device of hybrid shovel
JP2009022961A (en) * 2007-07-17 2009-02-05 Sumitomo Metal Ind Ltd Scarfing device and slag removing method
CN102223981A (en) * 2008-11-25 2011-10-19 新日本制铁株式会社 Apparatus for scarfing steel bar and method for scarfing steel bar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008274716A (en) * 2007-05-07 2008-11-13 Daikin Ind Ltd Operating device of hybrid shovel
JP2009022961A (en) * 2007-07-17 2009-02-05 Sumitomo Metal Ind Ltd Scarfing device and slag removing method
CN102223981A (en) * 2008-11-25 2011-10-19 新日本制铁株式会社 Apparatus for scarfing steel bar and method for scarfing steel bar

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