GB1272414A - Method of hot scarfing metal billets - Google Patents

Method of hot scarfing metal billets

Info

Publication number
GB1272414A
GB1272414A GB1965569A GB1965569A GB1272414A GB 1272414 A GB1272414 A GB 1272414A GB 1965569 A GB1965569 A GB 1965569A GB 1965569 A GB1965569 A GB 1965569A GB 1272414 A GB1272414 A GB 1272414A
Authority
GB
United Kingdom
Prior art keywords
billet
torch
scarfed
scarfing
gas
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
GB1965569A
Inventor
Charles William Tuck
Stewart Clark Mcrobert
William Benjamin Wragge
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.)
G K N ROLLED AND BRIGHT STEEL
Original Assignee
G K N ROLLED AND BRIGHT STEEL
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 G K N ROLLED AND BRIGHT STEEL filed Critical G K N ROLLED AND BRIGHT STEEL
Publication of GB1272414A publication Critical patent/GB1272414A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/26—Plasma torches
    • H05H1/32—Plasma torches using an arc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K10/00—Welding or cutting by means of a plasma
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Arc Welding In General (AREA)

Abstract

1,272,414. Scarfing. G.K.N. ROLLED & BRIGHT STEEL Ltd. 30 April, 1970 [17 April, 1869 (2)], Nos. 19654/69 and 19655/69. Heading B3V. [Also in Divisions H3-H5] A hot metal workpiece is scarfed by a plasma torch. In one embodiment the billet is scarfed whilst passing from a preheating furnace to a rolling mill by a plasma torch operated in the non-transferred mode and using A, N 2 , H 2 , A/H 2 or 70% N 2 /30% H 2 gas. A subsidiary gas such as an inert gas, oxygen or air is used to facilitate removal of the molten metal. When a wide billet is scarfed the torch is oscillated transversely of the billet or a plurality of torches arranged side by side are used (Fig. 4, not shown). All four sides of the billet may be simultaneously scarfed. In another embodiment the torch is operated in a non-transferred mode when it is not scarfing the billet. As soon as the billet moves into the operative position, the torch is automatically changed to the transferred mode whereupon an oxidizing gas such as oxygen or an inert plasma gas is used. When scarfing has been initiated, the scarfing may be continued using oxygen or an oxygen-propane mixture. When three or multiples of three plasma torches operating in a transferred mode are used, a D.C. supply is connected between the cathode and nozzle of the torch and a three phase A.C. supply connected between the nozzle and billet, one phase to each torch.
GB1965569A 1969-04-17 1969-04-17 Method of hot scarfing metal billets Expired GB1272414A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1965469 1969-04-17

Publications (1)

Publication Number Publication Date
GB1272414A true GB1272414A (en) 1972-04-26

Family

ID=10132956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1965569A Expired GB1272414A (en) 1969-04-17 1969-04-17 Method of hot scarfing metal billets

Country Status (1)

Country Link
GB (1) GB1272414A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5019655A (en) * 1973-05-21 1975-03-01
JPS5037655A (en) * 1973-08-06 1975-04-08
JPS5133747A (en) * 1974-09-17 1976-03-23 Koike Sanso Kogyo Kk GASUKAKONIOKERUSHUNJISUTAATOHOHO
CN102581456A (en) * 2012-02-21 2012-07-18 宜兴市九洲封头锻造有限公司 Plasma welding operation platform

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5019655A (en) * 1973-05-21 1975-03-01
JPS5037655A (en) * 1973-08-06 1975-04-08
JPS5243462B2 (en) * 1973-08-06 1977-10-31
JPS5133747A (en) * 1974-09-17 1976-03-23 Koike Sanso Kogyo Kk GASUKAKONIOKERUSHUNJISUTAATOHOHO
JPS5334777B2 (en) * 1974-09-17 1978-09-22
CN102581456A (en) * 2012-02-21 2012-07-18 宜兴市九洲封头锻造有限公司 Plasma welding operation platform

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees