IL45918A - Laser-radio frequency energy beam system - Google Patents

Laser-radio frequency energy beam system

Info

Publication number
IL45918A
IL45918A IL45918A IL4591874A IL45918A IL 45918 A IL45918 A IL 45918A IL 45918 A IL45918 A IL 45918A IL 4591874 A IL4591874 A IL 4591874A IL 45918 A IL45918 A IL 45918A
Authority
IL
Israel
Prior art keywords
nozzle
electrode means
laser beam
hollow
workpiece
Prior art date
Application number
IL45918A
Other versions
IL45918A0 (en
Original Assignee
Sirius 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 Sirius Corp filed Critical Sirius Corp
Publication of IL45918A0 publication Critical patent/IL45918A0/en
Publication of IL45918A publication Critical patent/IL45918A/en

Links

Classifications

    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B23K26/1423—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the flow carrying an electric current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/22—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
    • B05B7/22—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc
    • B05B7/228—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed electrically, magnetically or electromagnetically, e.g. by arc using electromagnetic radiation, e.g. laser
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B23K26/144—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing particles, e.g. powder
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
    • B23K26/1462—Nozzles; Features related to nozzles
    • B23K26/1464—Supply to, or discharge from, nozzles of media, e.g. gas, powder, wire
    • B23K26/147—Features outside the nozzle for feeding the fluid stream towards the workpiece

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Laser Beam Processing (AREA)
  • Lasers (AREA)

Claims (12)

WHAT IS CLAIM5H IS:
1. In a radio frequency energy beam system for generating a high temperature beam and for directing the beam at a workpiece said system adapted to be used with a supply of low pressure inert gas; said system comprising: a radio-frequency generator including a tank coil formed of a hollow , electrically conductive tube , both ends of said tube being electrically and mechanically coupled to said generator , said inert gas being introduced into a maximum current-low voltage point of said tank coil , said generator being for producing a single frequency coherent sine wave energy beam; an electrically conductive nozzle having an opening at one end and an outlet orifice at said other end; a hollow outlet tube( connecting a maximum voltage-low current point of said tank coil with the interior of said nozzle; the improvement characterized by means for generating a laser beam and for directing the laser beam into said nozzle opening; and hollow electrode means, centrally mounted within said nozzle and being radially spaced-apart therefrom to define an annular gap therebetween; said electrode for channeling a laser beam and the low pressure inert gas; said laser beam being directed from said nozzle opening through the hollow portion of said electrode means; means for reflecting said laser beam from the hollow portion of said electrode means and for focusing said laser beam on said workpiece; and a continuous fluid path being defined from said supply of inert gas , through said tank coil , said outlet tube , said electrode means and said annular gap; whereby upon the application of said sine wave to said electrode means , the introduction of said inert gaj! into said fluid path , and the generation of said laser beam , a high temperature coherent electromagnetic energy beam is emitted from said electrode means; said coherent electromagnetic energy beam including a laser beam portion and a R .F . energy beam emitted from said electrode means and having an annular sheath of said inert gas for surrounding and focusing said beam and having an inner gas stream for conducting the electromagnetic energy to the workpiece . '
2. The invention of Claim 1 wherein said electrode means includes a hollow body portion and a hollow ring spaced apart from said body by struts; said ring including a reflective surface to reflect said laser back toward said nozzle; and wherein said coherent electromagnetic energy is emitted from said hollow ring .
3. The invention of Claim 2 wherein said electrode means and said nozzle operate as a Cassegranian reflector system with the electrode means movably secured to said nozzle for adjusting the focus of said reflected laser beam onto said workpiece .
4. The invention of Claim 1 wherein said electrode means is movably mounted in said nozzle for adjusting the focus and length of said beam .
5. . The invention of Claim 1 and further including a material supply system for conveying a finely divided heat fusible material through said tank coil and said outlet tube and then exteriorly of said nozzle to said nozzle orifices , whereby said material flows with and is heated by said electromagnetic beam from said orifice to be sprayed and fused onto said workpiece .
6. The invention of Claim 1 wherein said radio frequency energy beam modulates the laser beam .
7. In a method for generating a high temperature coherent electromagnetic beam by generating a single frequency sine wave signal in a hollow electrically conductive tubular tank coil of a radio-frequency generator; injecting an inert gas into a maximum current-low voltage point of said tank coil; conveying said inert gas through said coil to an exit port located at a maximum voltage low-current point of said coil; conveying said inert gas from said exit port through a hollow electrically conductive outlet tube to a nozzle having an outlet orifice; transmitting said single frequency sine wave signal from said maximum voltage low current point of said coil around a hollow electrode means centrally located in said nozzle orifice; the improvement characterized by: conveying a laser beam through said outlet nozzle and throu the hollow portion of said electrode means , together with a low pressure gas stream; and reflecting said laser beam from the hollow portion of said electrode means onto said workpiece and focusing the laser beam thereon , while allowing said low pressure gas stream to continue directly toward said workpiece; where by said inert gas forms an annular sheath which surrounds and focuses the high temperature stream emitted from said electrode means and nozzle orifice into a b
8. The invention of Claim 7 and further including injecting a finely divided heat fusible material into a maximum current zero voltage point of said tank coil; and conveying said material through said tank coil and out through said exit port to said nozzle orifice; whereby said material enters the coherent electromagnetic beam emitted from said nozzle , said material being j. thus sprayable onto workpieces to be deposited and fused thereon as a coating.
9. In a method for spraying a coating on a workpiece with a . high temperature coherent electromagnetic beam emitted from an orifice , by generating a single frequency sine wave signal in a hollow electrically conductive tubular tank coil of a radio-frequency generator; injecting an inert gas and a heat fusable material in a carrier gas into a maximum current-low voltage point of said tank coil; convey said inert gas and said material in its carrier gas separately through said coil to an exit port located at a maximum voltage low-current point of said coil; conveying said inert gas from said exit port through a hollow electrically conductive outlet tube to a nozzle having an outlet orifice; conveying said material from said exit port to said nozzle orifice; transmittin said single frequency sine wave signal from said maximum voltage low-current point of said coil around a hollow electrode means centrally located in said nozzl orifice , while maintaining said electrode means and said surrounding nozzle at t same electrical potential; the improvement characterized by generating a laser beam; conveying said laser beam through said outlet nozzle and through the hollow portion of said electrode means; and reflecting said laser beam from the hollow portion of said electrode means onto said workpiece and focusing the lase beam thereon; whereby said inert gas forms an annular sheath which surrounds and focuses into a beam the high temperature coherent radio frequency-plasma electron stream emitted from said electrode means and nozzle orifice and said material enters the beam thus emitted and is sprayed onto said workpiece with the energy in said beam causing the material to be fused on the workpiece as a coating .
10. A radio frequency energy beam system for generating a high temperature beam and for directing the beam at a workpiece, substantially as described with reference to and as illustrated in the accompanying drawings.
11. A method for generating a high temperature coherent electromagnetic beam substantially as described with reference to and as illustrated in the accompanying drawings.
12. A method for spraying a coating on a workpiece with a high temperature coherent electromagnetic beam emitted from an orifice, substantially as described with reference to and as illustrated in the accompanying drawings. ADVOCATE, PATENT ATTORNEY P.O.B. 39251 TEL-AVIV, ISRAEL , - -
IL45918A 1973-10-24 1974-10-23 Laser-radio frequency energy beam system IL45918A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US409167A US3872279A (en) 1973-10-24 1973-10-24 Laser-radio frequency energy beam system

Publications (2)

Publication Number Publication Date
IL45918A0 IL45918A0 (en) 1975-03-13
IL45918A true IL45918A (en) 1976-10-31

Family

ID=23619322

Family Applications (1)

Application Number Title Priority Date Filing Date
IL45918A IL45918A (en) 1973-10-24 1974-10-23 Laser-radio frequency energy beam system

Country Status (6)

Country Link
US (1) US3872279A (en)
JP (1) JPS5075392A (en)
CA (1) CA983584A (en)
DE (1) DE2450938A1 (en)
FR (1) FR2302815A1 (en)
IL (1) IL45918A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157923A (en) * 1976-09-13 1979-06-12 Ford Motor Company Surface alloying and heat treating processes
DE2813642C2 (en) * 1978-03-30 1984-02-23 National Research Development Corp., London Method and device for processing metallic workpieces
US4179599A (en) * 1978-05-08 1979-12-18 The United States Of America As Represented By The Secretary Of The Army Laser plasmatron
US4200669A (en) * 1978-11-22 1980-04-29 The United States Of America As Represented By The Secretary Of The Navy Laser spraying
GB2052566B (en) * 1979-03-30 1982-12-15 Rolls Royce Laser aplication of hard surface alloy
JPS5791893A (en) * 1980-11-28 1982-06-08 Komatsu Ltd Method for overplaying of dissimilar metal on metallic base material
JPS5947085A (en) * 1982-09-10 1984-03-16 Mitsubishi Electric Corp Laser processing machine
JPS59206195A (en) * 1983-05-09 1984-11-21 Semiconductor Energy Lab Co Ltd Laser beam machining method
US5006688A (en) * 1988-10-24 1991-04-09 Westinghouse Electric Corp. Laser-arc apparatus and method for controlling plasma cloud
US5043548A (en) * 1989-02-08 1991-08-27 General Electric Company Axial flow laser plasma spraying
DE4006511A1 (en) * 1990-03-02 1991-09-05 Krupp Gmbh DEVICE FOR FEEDING POWDERED ADDITIVES IN THE AREA OF A WELDING POINT
US5147997A (en) * 1991-06-21 1992-09-15 Delaware Capital Formation, Inc. Stand-off cup for torch
US5705785A (en) * 1994-12-30 1998-01-06 Plasma-Laser Technologies Ltd Combined laser and plasma arc welding torch
US5700989A (en) * 1994-12-30 1997-12-23 Dykhno; Igor S. Combined laser and plasma arc welding torch
US7121511B2 (en) * 2000-05-31 2006-10-17 Kevin Kremeyer Shock wave modification method and system
WO2009025803A1 (en) 2007-08-20 2009-02-26 Kevin Kremeyer Energy-deposition systems, equipment and methods for modifying and controlling shock waves and supersonic flow
EP2310159A2 (en) * 2008-05-19 2011-04-20 Charles Klangos System and method for weld removal, cutting, and gouging with vacuum removal of byproducts
EP2506981B1 (en) * 2009-12-04 2018-02-14 The Regents Of The University Of Michigan Coaxial laser assisted cold spray nozzle
US10119195B2 (en) 2009-12-04 2018-11-06 The Regents Of The University Of Michigan Multichannel cold spray apparatus
US10669653B2 (en) 2015-06-18 2020-06-02 Kevin Kremeyer Directed energy deposition to facilitate high speed applications

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324277A (en) * 1963-06-17 1967-06-06 Budd Co Plasma torch and auxiliary jet arrangement
US3309564A (en) * 1963-12-26 1967-03-14 Air Reduction Arc welding apparatus having plasma generator for starting
US3347698A (en) * 1964-01-10 1967-10-17 Metco Inc Radio frequency plasma flame spraying
US3719829A (en) * 1970-04-10 1973-03-06 Versar Inc Laser beam techniques
US3648015A (en) * 1970-07-20 1972-03-07 Thomas E Fairbairn Radio frequency generated electron beam torch
US3723246A (en) * 1971-05-27 1973-03-27 Atomic Energy Commission Plasma production apparatus having droplet production means and laserpre-pulse means

Also Published As

Publication number Publication date
DE2450938A1 (en) 1975-04-30
FR2302815B1 (en) 1978-11-24
CA983584A (en) 1976-02-10
IL45918A0 (en) 1975-03-13
US3872279A (en) 1975-03-18
JPS5075392A (en) 1975-06-20
FR2302815A1 (en) 1976-10-01

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