GB1218661A - Improvements in or relating to processes for the fast surface-heating of electrically conducting materials - Google Patents

Improvements in or relating to processes for the fast surface-heating of electrically conducting materials

Info

Publication number
GB1218661A
GB1218661A GB1804768A GB1804768A GB1218661A GB 1218661 A GB1218661 A GB 1218661A GB 1804768 A GB1804768 A GB 1804768A GB 1804768 A GB1804768 A GB 1804768A GB 1218661 A GB1218661 A GB 1218661A
Authority
GB
United Kingdom
Prior art keywords
plasma
workpiece
aerial
electrode
supplied
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
GB1804768A
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.)
Gebrueder Boehler and Co AG
Original Assignee
Gebrueder Boehler and Co AG
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
Priority claimed from AT356567A external-priority patent/AT270835B/en
Priority claimed from AT622567A external-priority patent/AT286464B/en
Priority claimed from AT622667A external-priority patent/AT286465B/en
Application filed by Gebrueder Boehler and Co AG filed Critical Gebrueder Boehler and Co AG
Publication of GB1218661A publication Critical patent/GB1218661A/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
    • H05H1/30—Plasma torches using applied electromagnetic fields, e.g. high frequency or microwave energy
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation

Abstract

1,218,661. Plasma torch. BOHLER A.G. GEB. 17 April, 1968 [17 April, 1967; 5 July, 1967 (2)], No. 18047/68. Heading H5H. [Also in Division C7] A workpiece of e.g. steel 7 is surface hardened by a plasma 6 generated by a plasma jet apparatus comprising a single hollow or solid electrode 2 supplied by a high frequency (10-100 Mc/s) generator 1, and a surrounding tube 3 supplied with an ionizable gas stream, the electrode 2 producing a high frequency radiation field with a high electric field strength which only heats the plasma strongly at the transition point between the plasma and workpiece. It is stated that neither the plasma nor the centre of the workpiece are strongly heated by the radiation field and that accordingly the cold plasma can be shaped with a non-conducting nozzle 8. The tube 3 can be omitted and the ionizable gas supplied through a hollow radiating (copper) electrode (Fig. 2, not shown). The workpiece 7 acts as an energy radiator and the amount of power absorbed at its surface can be adjusted by connecting an adjustable aerial to the workpiece. The aerial may be an angularly adjustable dipole, a telescopic aerial or an adjustable disc aerial. The electrode 2 is of thoriated tungsten and the plasma gas is argon ionized with the help of a helium-neon mixture.
GB1804768A 1967-04-17 1968-04-17 Improvements in or relating to processes for the fast surface-heating of electrically conducting materials Expired GB1218661A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT356567A AT270835B (en) 1967-04-17 1967-04-17 Process for the rapid heating of electrically conductive materials
AT622567A AT286464B (en) 1967-07-05 1967-07-05 Process for the rapid heating of electrically conductive materials
AT622667A AT286465B (en) 1967-07-05 1967-07-05 Process for the rapid heating of electrically conductive materials

Publications (1)

Publication Number Publication Date
GB1218661A true GB1218661A (en) 1971-01-06

Family

ID=27149501

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1804768A Expired GB1218661A (en) 1967-04-17 1968-04-17 Improvements in or relating to processes for the fast surface-heating of electrically conducting materials

Country Status (5)

Country Link
CH (1) CH493634A (en)
CS (1) CS182202B2 (en)
DE (1) DE1765104A1 (en)
FR (1) FR1568415A (en)
GB (1) GB1218661A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4992642A (en) * 1988-03-28 1991-02-12 U.S. Philips Corporation Plasma torch with cooling and beam-converging channels
AT392981B (en) * 1989-10-24 1991-07-25 Schuler Albert Method of hardening the cutting edges of knives

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2086698C1 (en) * 1994-08-03 1997-08-10 Вудфорд Трейдинг Лимитед Method of surface treatment of metal carrier
DE10226468B4 (en) * 2002-06-14 2004-11-04 Kpss-Kao Professional Salon Services Gmbh container
CN102912087B (en) * 2012-09-26 2014-03-26 王硕桂 Process for quenching surface of 20 steel pipe without flexible overlap strip by plasma arc through carburizing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4992642A (en) * 1988-03-28 1991-02-12 U.S. Philips Corporation Plasma torch with cooling and beam-converging channels
AT392981B (en) * 1989-10-24 1991-07-25 Schuler Albert Method of hardening the cutting edges of knives

Also Published As

Publication number Publication date
DE1765104A1 (en) 1971-07-01
FR1568415A (en) 1969-05-23
CS182202B2 (en) 1978-04-28
CH493634A (en) 1970-07-15

Similar Documents

Publication Publication Date Title
US3594609A (en) Plasma generator with magnetic focussing and with additional admission of gas
US2587331A (en) High-frequency electrical heating method and apparatus
US3153133A (en) Apparatus and method for heating and cutting an electrically-conductive workpiece
US3149222A (en) Electrical plasma-jet apparatus and method incorporating multiple electrodes
US3248513A (en) Equipment for forming high temperature plasmas
US3648015A (en) Radio frequency generated electron beam torch
NO115114B (en)
GB1456539A (en) Arc welding
GB987540A (en) Contra-rotating plasma system
US2944140A (en) High-intensity electrical plasma-jet torch incorporating magnetic nozzle means
US3205338A (en) Equipment for forming high temperature plasmas
GB1347555A (en) Surface hardening
GB1218661A (en) Improvements in or relating to processes for the fast surface-heating of electrically conducting materials
EP0335448B1 (en) Plasma torch
US2620422A (en) Arc welding apparatus
US3311735A (en) Apparatus and method for generating heat
US3378713A (en) High-intensity radiation source comprising rotating arc
US3783227A (en) Fully energized plasma jet
GB1057425A (en) Improvements in and relating to radiation detectors
US3370148A (en) Electric-arc plasma-fine-spray burner
GB1239186A (en)
JPS555125A (en) Plasma arc build-up welding method by powder metals or other
US2913619A (en) Particle accelerators
US3646310A (en) High-frequency starting device for an electric welding arc
RU2163424C1 (en) Device for dynamic plasma treatment of articles