WO2007075108A1 - Procede de traitement thermique local de materiaux et dispositif de sa mise en oeuvre (et variantes) - Google Patents

Procede de traitement thermique local de materiaux et dispositif de sa mise en oeuvre (et variantes) Download PDF

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Publication number
WO2007075108A1
WO2007075108A1 PCT/RU2005/000684 RU2005000684W WO2007075108A1 WO 2007075108 A1 WO2007075108 A1 WO 2007075108A1 RU 2005000684 W RU2005000684 W RU 2005000684W WO 2007075108 A1 WO2007075108 A1 WO 2007075108A1
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WO
WIPO (PCT)
Prior art keywords
polychromatic
radiation
coherent
source
polychromatic radiation
Prior art date
Application number
PCT/RU2005/000684
Other languages
English (en)
Russian (ru)
Inventor
Georgiy Mikhailovich Alekseev
Yury Mikhailovich Bolshov
Jan Krykorka
Valeriy Pavlovich Sokolov
Original Assignee
Georgiy Mikhailovich Alekseev
Yury Mikhailovich Bolshov
Jan Krykorka
Valeriy Pavlovich Sokolov
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 Georgiy Mikhailovich Alekseev, Yury Mikhailovich Bolshov, Jan Krykorka, Valeriy Pavlovich Sokolov filed Critical Georgiy Mikhailovich Alekseev
Priority to PCT/RU2005/000684 priority Critical patent/WO2007075108A1/fr
Publication of WO2007075108A1 publication Critical patent/WO2007075108A1/fr

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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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/005—Soldering by means of radiant energy
    • B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
    • 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
    • B23K26/0006—Working by laser beam, e.g. welding, cutting or boring taking account of the properties of the material involved
    • 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
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • 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
    • B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
    • 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
    • B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
    • B23K28/02—Combined welding or cutting procedures or apparatus
    • 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
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26

Definitions

  • the invention relates to the field of heat treatment of materials, namely, to a local hybrid heat treatment of materials by the method of influencing the material in the local processing zone by coherent and polychromatic radiation, mainly when welding metals.
  • the invention can be used for local heat treatment, as well as for welding, surfacing and the manufacture of thermally granulated fluxes.
  • lasers having certain advantages, such as a high energy density
  • SUBSTITUTE SHEET (RULE 26) energy through an optically transparent shell in a controlled gas environment or vacuum, spatial stability of polychromatic radiation, resistance to electromagnetic fields, control of radiation intensity, environmental cleanliness.
  • the disadvantages of polychromatic radiation sources are also indicated - at a relatively low cost of radiant energy, they have low energy densities at the processing point, in the range of about 10 W / cm, which significantly reduces productivity and limits the use of polychromatic radiation sources.
  • an arc discharge is used between the cathode and the anode, the radiation of which is focused by reflectors to a working point on the product, due to which the required temperature for welding and soldering is achieved (RU 2062684, A, B23K 28/02 ) [four].
  • SUBSTITUTE SHEET (RULE 26) accordingly, it allows reducing the energy density of coherent radiation, i.e. use lasers of lower power.
  • Hybrid heat treatment and welding of metals by simultaneous exposure to coherent and polychromatic radiation is known (“Promising Principles of Using Laser Laser Technology), Alekseev G.M. and others, the journal “Automatic welding", 2005, Ns “5, p. 5-11) [5].
  • the publication provides an analysis of the advantages and disadvantages of thermal exposure to coherent and polychromatic radiation, describes the main methods of metal processing and describes a device for implementing these methods.
  • An analogue of the present invention is a method and apparatus for welding, brazing and surfacing of metals by the method of simultaneous
  • SUBSTITUTE SHEET (RULE 26) effects on the material in the local processing zone by coherent and polychromatic radiation (RU 2185943, B23K28 / 02) [6].
  • a polychromatic emitter is placed in a cooled case and has a reflective surface consisting of the first and second ellipsoids of revolution, the large axes of which are aligned. Ellipsoids are connected by a reflecting spherical surface.
  • the device has an arc ignition unit with a movable third electrode between the cathode and anode.
  • the axis of the fiber mount from the coherent radiation source (laser) is placed with the possibility of adjustment at an angle from 5 ° to 85 ° to the major axis of the concentrator so that the intersection of the axis of the optical fiber and the major axis of the polychromatic emitter is aligned with the working focus of the device.
  • the device operates as follows. First, a vacuum is created in the polychromatic radiation emitter, then the emitter is filled with a plasma-forming gas and sealed. After this, a contact ignition of the arc between the electrodes of the emitter is made and the operating mode is set. The focal spot of this source is directed to the processed local area of the material, and the beam of the coherent radiation source is collimated, focused and also fed into the processing zone of the material.
  • the advantages of the device are the possibility of low-voltage ignition and the minimum deviation of the laser beam from the axis of polychromatic radiation.
  • the device has such disadvantages as contamination of the optics of a polychromatic radiation source in contact
  • SUBSTITUTE SHEET (RULE 26) arc ignition, the need to pump out water vapor and oil at high temperatures in the annealing furnace, as well as the effect of laser radiation on the protective glass of the emitter together with polychromatic radiation.
  • the patent also does not adequately disclose a method of heat treatment of metals by simultaneous exposure to coherent and polychromatic radiation.
  • the main objective of the present invention is to provide a method for the local combined heat treatment of materials by the method of exposure to coherent and polychromatic radiation, which provides the desired mechanical properties of materials by changing the heating rate and cooling of the local material processing zone in real time on a given thermal cycle.
  • the aim of the invention is also the creation of methods for changing the heating and cooling rate of the local zone of material processing in real time on a given thermal cycle.
  • the object of the invention is also the creation of a device for implementing this method.
  • the aim of the invention is also the creation of the most effective components and elements of the device (options).
  • the heating and cooling rates of the local material processing zone are changed by adjusting the intensity and / or radiation spectrum of the polychromatic radiation source.
  • focal point from the source of coherent radiation is moved over the area of the focal spot from the source of polychromatic radiation, setting it, in the middle, at the leading or trailing edge of the area of this spot, or between the focal spots from two sources of polychromatic radiation.
  • the focal spot from the source of polychromatic radiation is moved along the material processing zone, setting it, depending on the technological task, before or after the focal point from the source of coherent radiation,
  • hybrid welding can be performed both by the action of coherent radiation and polychromatic radiation from above the welding zone (single-sided welding), and by the action of coherent radiation from the bottom of the welding zone when polychromatic radiation is exposed from above the welding zone (double-sided welding).
  • a polychromatic radiation source consisting of a reflective optical system located in a sealed enclosure and electrodes installed inside it, the upper point of the cathode working surface being located in emitting focus of the optical system, the top of the case is closed by a removable cover with a porthole transparent for coherent and polychromatic rays fluxes, and the bottom of the casing is closed by a curved screen and a protective glass transparent for radiant fluxes, a device for igniting the arc between the anode and cathode of a polychromatic radiation source, power supplies for coherent and polychromatic radiation sources, a cooling system for a polychromatic radiation source, purging and filling it with a plasma-forming gas, the control unit of the device, and above the porthole a pipe is installed with the collimate located inside it sequentially along the coherent radiation orom, prism and mirror, reflecting optical system of
  • SUBSTITUTE SHEET (RULE 26) polychromatic radiation is made in the form of a two-section truncated ellipsoid, and the line of separation of the sections coincides with the plane perpendicular to the axis of the optical system passing through its focal points.
  • a collimator, a focusing optical element and a prism are installed along the beam of the coherent radiation source when it is fed to the operating point, the prism being mounted on the protective glass from the side of the working area with the possibility of moving in the plane of passage of the coherent beam.
  • the device is designed so that the focusing optical element is installed between the curved screen and the protective glass.
  • a mirror with a variable curvature of the reflecting surface is installed in the nozzle of the polychromatic radiation source, while changing its curvature is carried out using piezoceramic elements connected to the control unit of the radiation sources.
  • SUBSTITUTE SHEET choosing a protective glass material, for example from quartz, sapphire and
  • a threaded sleeve is installed under the housing cover with the possibility of movement inside the housing, a latch with teeth along the outer diameter is located above the cover, the counter teeth are made in the upper inner part of the housing, and the protective glass is installed using a removable conical nozzle.
  • a ring magnet is mounted on the cone nozzle.
  • the device comprises a control unit for preliminary ionization of the plasma-forming gas.
  • Fig.l The temperature distribution in the processing zone depending on the relative position of the focal point from the coherent radiation source in the focal spot area from the polychromatic radiation source.
  • FIG. 1 The temperature distribution in the processing zone, depending on the relative position of the focal spot from the polychromatic radiation source and the focal point from the coherent radiation source.
  • FIG. 4. View A of the device depicted in FIG.
  • FIG. 5 Section BB of the device depicted in Fig.Z.
  • FIG. 6 Device for local heat treatment with polychromatic and coherent radiation sources (Option 2).
  • the essence of the patented invention of hybrid heat treatment of materials by the method of influencing the material in the polychromatic and coherent radiation treatment zone is that this effect is carried out in such a way that the integration of the rays of both radiation sources provides the desired properties of the processed materials due to the formation of a thermal field in the material processing zone real-time programmable thermal cycle,
  • SUBSTITUTE SHEET (RULE 26) - the heating and cooling rates of the local material processing zone are changed by adjusting the intensity and / or selection of the radiation spectrum of the polychromatic radiation source;
  • the heating and cooling rates of the local material processing zone are changed by choosing the relative position of the focal point from the source of coherent radiation and the focal spot from the source of polychromatic radiation.
  • the focal point from the source of coherent radiation is moved along the area of the focal spot from the source of polychromatic radiation, setting it, depending on the technological task, in the middle, at the leading or trailing edge of the area of this spot, or between focal spots from two sources of polychromatic radiation.
  • the focal spot from the source of polychromatic radiation is moved along the processing zone of the material, setting it, depending on the technological task, before or after the focal point from the source of coherent radiation.
  • the above methods for regulating the heating and cooling rate of the local material processing zone provide real-time programmable preliminary and / or subsequent heating of the processing zone, achieving the specified
  • SUBSTITUTE SHEET (RULE 26) temperature at the processing point and a predetermined subsequent cooling rate of the processing zone, depending on the technological task of obtaining the specified mechanical properties of the materials.
  • Mutual positioning of the focal point from the source of coherent radiation and the focal spot from the source of polychromatic radiation is performed both by adjusting the elements of the optical path of the source of coherent radiation, for example, by turning the focusing lens, and by moving the source of polychromatic radiation.
  • the radiation intensity of the polychromatic radiation source is controlled mainly by changing the current between the anode and cathode of this source. It is also possible to change this intensity by choosing the type and magnitude of the pressure of the plasma-forming gas, or by changing the focal length.
  • the choice of the spectrum of the polychromatic radiation source in order to increase the efficiency of the effect of coherent radiation on the material is carried out by choosing the type of plasma-forming gas (gas mixture), or using optical filters.
  • hybrid welding can be performed both by exposure to coherent radiation and polychromatic radiation from above the welding zone (single-sided welding), and by exposure to coherent radiation from below the welding zone when polychromatic radiation is exposed from above this zone (double-sided welding).
  • SUBSTITUTE SHEET When combined with coherent radiation and focused polychromatic radiation, a heat field is formed in the material processing zone, the spatial distribution of which is determined by the superposition of radiation fluxes (Figs. 1 and 2), where the effect of polychromatic radiation is indicated by the letter A, and the effect of coherent radiation by the letter B.
  • a coherent beam is installed at the leading edge of the focal spot from a polychromatic radiation source (Figs. Ia and 2a)
  • a metal quenching or welding process takes place in the processing zone, followed by tempering, and the polychromatic component provides a predetermined cooling rate.
  • the polychromatic component maximizes the activation of the surface (preheating) and an increase in the absorption coefficient of the treated surface of the coherent component.
  • the process of welding, surfacing or heat treatment of the metal with subsequent tempering takes place, and the polychromatic component simultaneously provides surface activation and a decrease in the cooling rate in the processing zone.
  • the focal point from the coherent radiation source is set at the leading edge of the thermal field from the polychromatic radiation source (Figs. Ia and 26 )
  • the polychromatic component provides a given cooling rate of the treatment zone and helps to achieve a predetermined temperature at the heating point.
  • the focal point from the coherent radiation source is set at the trailing edge of the thermal field from the polychromatic radiation source ( Figv and 26).
  • the polychromatic component maximally promotes the activation of the treated surface, closure of local gaps in the joint and an increase in the absorption capacity of the coherent component.
  • the heating and cooling rates of the operating point will change, and accordingly the structure of the material in the processing zone will change.
  • the focal point from the source of coherent radiation should be in the center of the heat spot from the source of polychromatic radiation (Fig.16) or between the heat spots from two sources of polychromatic radiation (Fig.2b).
  • the preheating temperature should not exceed the temperature of the onset of phase transitions Ac 1 .
  • SUBSTITUTE SHEET (RULE 26) - the difference in the coefficients of thermal expansion of the base and deposited metals in certain temperature ranges during cooling;
  • the focal point from the source of coherent radiation should be in the center of the heat spot from the source of polychromatic radiation (Fig.16) or between the heat spots from two sources of polychromatic radiation (Fig.2b).
  • the device for processing materials according to the first embodiment of the present invention (Fig.Z.) consists of a polychromatic emitter containing a reflector 1 enclosed in a housing 2, with anode 3 and a cathode 4 located inside the reflector.
  • the housing 2 is closed by a cover 5.
  • the device contains a coherent radiation source 6 with an optical path 7.
  • a nozzle 8 is mounted on the cover 5, with a collimator 9, a prism 10 and a mirror 11 placed in it, and the prism and mirror are mounted with the possibility of
  • the device also includes a power supply 17 of a coherent radiation source 6, a power supply 18 of a polychromatic radiation source, a water cooling unit 19, a high-voltage power supply 20 of the arc ignition and a system for purging, supplying and discharging a plasma-forming gas of a polychromatic emitter 21, a control unit for the device 22.
  • Device for processing materials according to the first embodiment works as follows.
  • the inner cavity of the housing 2 of the polychromatic emitter is filled with plasma-forming gas according to the following cycle: the cooling is turned on - the emitter is purged with ionized gas - the arc is ignited - the emitter is warmed up - the working pressure of the plasma-forming gas in the emitter is set. Then the polychromatic radiation source is brought to the operating mode, the radiant flux of which from the reflector 1 is directed to the treatment zone.
  • the generation of the coherent radiation source 6 is excited and brought to the operating mode.
  • the coherent beam along the optical path 7 through the collimator 9, the optical elements 10 and 11 are also sent to the processing zone.
  • the optical element 10 mainly a prism
  • the protective glass 16 with the possibility of movement.
  • the device is identical to the device according to option 1.
  • the optical element 10 can also be made in the form of a deformable mirror with a variable shape of the reflecting surface, which provides a change in the focal length and the angle of supply of the coherent beam into the processing zone and, thus, the relative position of the coherent and polychromatic energy rays in the processing zone.
  • the coherent beam through the optical path 7 through the focusing optical system 9 enters the optical element 10, with which the alignment of the supply of the coherent beam to the processing zone is carried out.
  • the operation of the devices in both cases is carried out in a similar way.
  • the device according to the third embodiment contains a coherent radiation source 6, an optical path 7, connecting
  • SUBSTITUTE SHEET (RULE 26) a coherent radiation source with a collimating system 9, a polychromatic radiation source 23, a focusing lens 24 mounted to move between the convex sealing glass 15 and the protective glass 16, an annular nozzle 25 with an annular magnet 26.
  • the device also includes radiation source power supplies not shown and ignition of an arc of a polychromatic emitter, a cooling system, a plasma-forming gas supply and a device control unit that are identical to those used in devices according to there are 1 and 2.
  • the optical element 24, mounted with the possibility of movement, provides the necessary mutual arrangement of beams of coherent and polychromatic radiant energy in the processing zone.
  • the operation of the device of the present embodiment is carried out similarly to the operation of the device of embodiment 1.
  • the ring magnet 26 protects the protective glass from contamination and is installed so that the magnetic lines of force are directed parallel to the plane of the treatment zone. With such an arrangement, scattering metal splashes during surfacing and welding are attracted to the nozzle by the magnetic field of the ring magnet ..
  • the presence of a retainer and a threaded sleeve in all variants of the device provides preliminary compression of the protective glass seals under the convex sealing screen and prevents gas leakage during startup into the working volume of the polychromatic emitter. Seals located at the housing cover with the screws screwed into the cover are pre-pressed to the latch.
  • a threaded sleeve and a retainer provides initial sealing of the internal cavity of the emitter for subsequent filling with plasma-forming gas.
  • its pressure additionally bursts (squeezes) the seals from the inside and ensures the final sealing of the emitter.
  • SUBSTITUTE SHEET coherent radiant energy within the same heating zone allows to ensure the tempering of the welded joint (including the seam and the heat affected zone) and to eliminate or reduce the formation of structures prone to cracking. Therefore, the focal point from the source of coherent radiation is installed on the leading edge of the focal spot from the source of polychromatic radiation (Fig. Ia, Fig. 2a and Fig. 2b), and the necessary intensity of polychromatic radiation is created (programmed), decreasing to the periphery of this spot. In this case, a welding process takes place in the processing zone with concomitant or subsequent tempering, and the polychromatic component provides a given cooling rate.
  • SUBSTITUTE SHEET (RULE 26) closes or reduces local gaps and increases the absorption capacity of the coherent component.
  • the focal point from the source of coherent radiation should be at the trailing edge of the focal spot from the source of polychromatic radiation (Fig. Lc OR 2B), which will allow avoiding burns and maximizing the absorption coefficient of the coherent component by the welding zone.
  • SUBSTITUTE SHEET (RULE 26) - a given speed of heating and cooling the processing zone in real time.
  • the ability to program the thermal treatment cycle allows for the optimal deposition of metal powders with special properties, taking into account the above requirements.
  • the present invention can be applied for surfacing wear-resistant powders on the working surfaces of molds and parts of drilling rigs, on the cutting edges of tools, heat-resistant powders on blades and other details of the hot tract of gas turbine aircraft engines, and also for surfacing corrosion-resistant coatings.
  • a coherent beam is installed at the trailing edge of the heat spot from the focal field of the polychromatic radiation source (Figs. 1c and 2c). This arrangement provides maximum activation of the treated surface and an increase in the absorption capacity of the coherent component.
  • the mixture in the form of mineral flour is moved in the processing zone at such a speed that spherical granules form on the surface of the mixture.
  • the temperature in the working area and the speed of movement of the charge are set at the level necessary to obtain granules of a given size.
  • SUBSTITUTE SHEET (RULE 26)
  • the specified method of manufacturing fluxes provides an increase in the quality of fused-ceramic fluxes, since it allows the use of a mixture without binders based on water. Therefore, the use of these fluxes in welding provides a decrease in hydrogen in the welded joint.
  • SUBSTITUTE SHEET (RULE 26) the multivariance of the device to implement the patented method, which contributes to the expansion of technological tasks.
  • the present invention can be applied in almost all industries: in the automotive and aerospace, nuclear and oil and gas, chemical and several other industries.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laser Beam Processing (AREA)

Abstract

L'invention concerne un procédé de traitement thermique hybride de matériaux par l'action d'un rayonnement cohérent et polychromatique ainsi que des dispositifs de sa mise en oeuvre (et variantes). Selon l'invention, on varie les vitesses de réchauffement et de refroidissement de la zone de traitement locale en temps réel en suivant un cycle thermique déterminé. A cet effet, on a prévu dans ces dispositifs le réglage de l'intensité de rayonnement et/ou du spectre de la source de rayonnement polychromatique ainsi que le réglage des positions respectives des points focaux de rayonnement cohérent et polychromatique. Le dispositif comprend un collimateur (9), un prisme (10) et un miroir. Dans l'une des variantes, le prisme est monté sur un verre de protection (16) du côté de la zone de travail, de manière à pouvoir se déplacer. Dans une autre variante, la lentille de mise au point est montée entre le verre d'étanchéité (15) et le verre de protection (16) de manière à pouvoir se déplacer.
PCT/RU2005/000684 2005-12-29 2005-12-29 Procede de traitement thermique local de materiaux et dispositif de sa mise en oeuvre (et variantes) WO2007075108A1 (fr)

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PCT/RU2005/000684 WO2007075108A1 (fr) 2005-12-29 2005-12-29 Procede de traitement thermique local de materiaux et dispositif de sa mise en oeuvre (et variantes)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2067040C1 (ru) * 1994-09-27 1996-09-27 Научно-производственная фирма "МГМ" Устройство для лазерной сварки материалов (варианты)
RU2092289C1 (ru) * 1995-11-30 1997-10-10 Фирма Общество с ограниченной ответственностью "МОГАСС" Устройство для пайки и сварки световым лучом
RU2185943C1 (ru) * 2000-12-08 2002-07-27 Алексеев Георгий Михайлович Устройство для светолучевой обработки материалов
RU2212067C1 (ru) * 2001-12-13 2003-09-10 Государственное унитарное предприятие "НПО Астрофизика" Способ удаления радиоактивной пленки с поверхностей объекта и устройство для его осуществления

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2067040C1 (ru) * 1994-09-27 1996-09-27 Научно-производственная фирма "МГМ" Устройство для лазерной сварки материалов (варианты)
RU2092289C1 (ru) * 1995-11-30 1997-10-10 Фирма Общество с ограниченной ответственностью "МОГАСС" Устройство для пайки и сварки световым лучом
RU2185943C1 (ru) * 2000-12-08 2002-07-27 Алексеев Георгий Михайлович Устройство для светолучевой обработки материалов
RU2212067C1 (ru) * 2001-12-13 2003-09-10 Государственное унитарное предприятие "НПО Астрофизика" Способ удаления радиоактивной пленки с поверхностей объекта и устройство для его осуществления

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANDRIYAKHIN V.M.: "Protsessy lazernoi svarki i termoobrabotki", M. NAUKA, 1988, pages 50, 53 *

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