JPS5659594A - Coil build up method of hot rolled hoop - Google Patents

Coil build up method of hot rolled hoop

Info

Publication number
JPS5659594A
JPS5659594A JP13597279A JP13597279A JPS5659594A JP S5659594 A JPS5659594 A JP S5659594A JP 13597279 A JP13597279 A JP 13597279A JP 13597279 A JP13597279 A JP 13597279A JP S5659594 A JPS5659594 A JP S5659594A
Authority
JP
Japan
Prior art keywords
coil
laser ray
cut
mirror
nozzle
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
JP13597279A
Other languages
Japanese (ja)
Other versions
JPS5948718B2 (en
Inventor
Shigehiro Yamaguchi
Katsuhiro Minamida
Seishiro Saida
Sakae Noguchi
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 JP54135972A priority Critical patent/JPS5948718B2/en
Publication of JPS5659594A publication Critical patent/JPS5659594A/en
Publication of JPS5948718B2 publication Critical patent/JPS5948718B2/en
Expired legal-status Critical Current

Links

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  • Laser Beam Processing (AREA)

Abstract

PURPOSE:To simplify the apparatus and speeding up the time of operation, by changing successively the applied energy density and location of laser ray emitted from one set of laser ray generating equipment by making use of an optical instrument. CONSTITUTION:The laser ray is applied onto the steel plate, travelling reflected at the concave mirror 7 and the end of the coil 1 is then cut off. The section being cut is made smooth by means of O2 gas blasting from the nozzle 13. Next, the end of the coil 2 is introduced and set to an appropriate position and cut in the direction of plate width by applying laser ray via the mirror 7. The coil 2 being cut is butted against the coil 1 and welded in the direction of plate width by laser ray. In the welding procedure, Ar or He gas is supplied from the nozzle 13 to avoid the chance of oxidation. Then, the mirror 7 is relocated and laser ray is further applied to the coil so as to cut off the end of coil in an arch shape. At that time, O2 gas is flown out from the nozzle 13, and aser ray is further applied to the weld bead and its both sides via the mirror 11. Soon after the application of laser ray, the welded part and heat effected zone are annealed by natural cooling.
JP54135972A 1979-10-23 1979-10-23 Coil build-up equipment for hot rolled steel strips Expired JPS5948718B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54135972A JPS5948718B2 (en) 1979-10-23 1979-10-23 Coil build-up equipment for hot rolled steel strips

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54135972A JPS5948718B2 (en) 1979-10-23 1979-10-23 Coil build-up equipment for hot rolled steel strips

Publications (2)

Publication Number Publication Date
JPS5659594A true JPS5659594A (en) 1981-05-23
JPS5948718B2 JPS5948718B2 (en) 1984-11-28

Family

ID=15164162

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54135972A Expired JPS5948718B2 (en) 1979-10-23 1979-10-23 Coil build-up equipment for hot rolled steel strips

Country Status (1)

Country Link
JP (1) JPS5948718B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60115387A (en) * 1983-11-25 1985-06-21 Mitsubishi Electric Corp Method for notching steel plate by laser beam
JPH04220183A (en) * 1990-01-20 1992-08-11 Thyssen Ind Ag Mas Bau Method and apparatus for butt welding steel sheet with laser beam welding method
CN102209604A (en) * 2008-11-10 2011-10-05 丹尼尔和科菲森梅克尼齐有限公司 Welding system of metal strips

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60115387A (en) * 1983-11-25 1985-06-21 Mitsubishi Electric Corp Method for notching steel plate by laser beam
JPH04220183A (en) * 1990-01-20 1992-08-11 Thyssen Ind Ag Mas Bau Method and apparatus for butt welding steel sheet with laser beam welding method
CN102209604A (en) * 2008-11-10 2011-10-05 丹尼尔和科菲森梅克尼齐有限公司 Welding system of metal strips
JP2012508113A (en) * 2008-11-10 2012-04-05 ダニエリ アンド シー.オフィチネ メッカニチェ ソシエタ ペル アチオニ Metal strip welding system

Also Published As

Publication number Publication date
JPS5948718B2 (en) 1984-11-28

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