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 materialsInfo
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
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.
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 |
| AT622667A AT286465B (en) | 1967-07-05 | 1967-07-05 | 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 |
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)
| 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)
| 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 |
-
1968
- 1968-04-03 DE DE19681765104 patent/DE1765104A1/en active Pending
- 1968-04-09 CH CH552368A patent/CH493634A/en not_active IP Right Cessation
- 1968-04-16 FR FR1568415D patent/FR1568415A/fr not_active Expired
- 1968-04-17 CS CS281668A patent/CS182202B2/en unknown
- 1968-04-17 GB GB1804768A patent/GB1218661A/en not_active Expired
Cited By (2)
| 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 |
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