WO2015007117A1 - Procédé et dispositif de placage au laser à large bande - Google Patents

Procédé et dispositif de placage au laser à large bande Download PDF

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Publication number
WO2015007117A1
WO2015007117A1 PCT/CN2014/078244 CN2014078244W WO2015007117A1 WO 2015007117 A1 WO2015007117 A1 WO 2015007117A1 CN 2014078244 W CN2014078244 W CN 2014078244W WO 2015007117 A1 WO2015007117 A1 WO 2015007117A1
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WO
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Prior art keywords
laser
spot
powder
focused
focusing
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Application number
PCT/CN2014/078244
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English (en)
Chinese (zh)
Inventor
石世宏
傅戈雁
雷定中
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苏州大学张家港工业技术研究院
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Publication of WO2015007117A1 publication Critical patent/WO2015007117A1/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
    • 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
    • B23K26/0604—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams
    • B23K26/0608—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams in the same heat affected zone [HAZ]
    • 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
    • B23K26/067—Dividing the beam into multiple beams, e.g. multifocusing
    • B23K26/0676—Dividing the beam into multiple beams, e.g. multifocusing into dependently operating sub-beams, e.g. an array of spots with fixed spatial relationship or for performing simultaneously identical operations
    • 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
    • B23K26/073—Shaping the laser spot
    • B23K26/0738—Shaping the laser spot into a linear shape
    • 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
    • B23K26/34—Laser welding for purposes other than joining

Definitions

  • the present invention relates to the field of laser cladding processing technology, and in particular to a laser broadband cladding device and method. Background technique
  • Laser cladding which uses a high-energy laser beam to melt a metal material and combine it with a base material to produce metallurgy, is widely used for surface strengthening, repair and modification of materials.
  • the wide area scanned by the broadband laser scanning can greatly improve the cladding efficiency and improve the melting due to the reduction of the number of overlaps. Coating quality.
  • the existing laser broadband cladding method is: converting a laser beam generated by a laser into an elongated focusing spot by means of an integrating mirror, irradiating a surface to be processed to form a molten pool, and synchronizing the same narrow beam from one side of the beam.
  • This double-side powder feeding method eliminates the directional influence of the round-trip scanning forming, regardless of the orientation of the laser beam, regardless of the orientation of the forward and backward scanning relative to the laser beam. Both of the above solutions are used to feed powder from the outside of the laser beam.
  • the disadvantages are:
  • the powder bundles are all sent into the beam by the external tilt of the laser beam.
  • the powder beam first interferes with the laser beam in the air before falling into the spot, generating absorption and diffuse reflection, so that the intensity of the spot irradiated onto the processing surface is weakened.
  • the smoothness of the melt channel is not good, and internal defects are increased.
  • the energy of the spot is generally distributed, and the heat dissipation of the two sides of the melt is faster when forming, resulting in insufficient energy, resulting in poor boundary fusion, affecting the fusion of the fusion channel. quality.
  • Patent (ZL200610116413.1) discloses a laser light internal powder feeding method, which converts a circular solid laser beam generated by a laser into a hollow conical focused beam, and the powder feeding tube is installed in a hollow portion of the laser beam to realize a single powder tube. Vertical forward feeding.
  • the intra-light powder feeding method greatly improves the coupling precision of light and powder, and the powder utilization rate is multiplied.
  • the intra-light powder feeding scheme focuses on the spot as a dot, the molten pool is small, and the sweeping area is narrow, and the cladding efficiency is limited, and cannot be applied to the broadband cladding. Summary of the invention
  • an object of the present invention is to provide a laser broadband cladding device and method, which can produce a beam width, high efficiency, and can realize round-trip scanning forming, and the powder beam does not occur in the light beam during the falling process. Interference, beam reflection loss is small; powder and laser beam coupling accuracy is high; powder diffusion degree is small, high utilization rate; melt tunnel structure is more uniform, and lap quality is better.
  • a laser broadband cladding device comprising:
  • the beam splitting prism comprises a first beam splitting plane and a second beam splitting plane symmetrically disposed, the first beam splitting plane and the second beam splitting plane reflecting the incident solid laser beam into a two-beam laser;
  • the condensing mirror includes a first concentrating mirror and a second concentrating mirror, wherein the first concentrating mirror and the second concentrating mirror are opposite to the first splitting plane and the second splitting plane, respectively, and receive the first splitting plane and the second splitting plane respectively.
  • the two-beam laser is again reflected and focused, and the two focused beams are closer and closer in the focusing stroke, and finally overlap in the focal plane as a focused light.
  • a spot, in the focusing stroke a two-prism cylindrical hollow region is naturally formed in the middle of the two focused beams, and the two focused beams are defocused to form mutually parallel elongated first focusing spot and second focusing spot on the defocused surface;
  • the powder feeding channel is installed in the center of the hollow region of the inverted triangular prism, and the center line of the powder feeding channel coincides with the symmetrical center line of the two focused beams.
  • the concentrating mirror surface type is composed of a vertical focusing line type in the vertical direction and a plurality of different horizontal focusing line patterns in the horizontal direction.
  • the vertical focus line type is a parabolic type.
  • the horizontal focus line type is a combination of one or more of one or more arcs, or other curves, and the energy distribution on the horizontal plane of the first focused spot and the second focused spot is horizontally focused.
  • the line segment combination design of the line is adjusted.
  • the beam splitting prism is a diagonal beam splitting prism, and the first beam splitting plane and the second beam splitting plane are equally divided and reflected by the incident solid laser.
  • the first concentrating mirror and the second condensing mirror are respectively disposed at equal intervals on both sides of the beam splitting prism.
  • the powder feeding passage is a piping composed of a plurality of pipes.
  • the device further includes:
  • Powder tube for feeding powder in light
  • the bracket disposed inside the casing is fixed, and the beam splitting prism is fixedly disposed on the bracket.
  • a laser broadband cladding method comprising the following steps:
  • the energy of the first focused spot and the second focused spot is adjusted to be saddle-shaped along the length direction, i.e., the energy at both ends of the first focused spot and the second focused spot is high and the intermediate energy is low.
  • the cross-sectional shape of the powder bundle on the machined surface is elongated and parallel to the first focused spot and the second focused spot.
  • the solid laser light incident in the step S1 is a rectangular laser.
  • the laser broadband cladding device and method of the invention is a solid rectangular laser emitted by a laser, and is perpendicularly incident on the optical path of the invention, and is divided into two equal-part nearly rectangular beams through a cross-section dichroic prism, and is horizontally emitted to both sides; the horizontally emitted near rectangle
  • the broad side of the near-rectangular beam is focused by the wide-side parabola of the concentrating mirror surface, and the long side aspherical arc of the concentrating mirror surface focuses on the long side of the nearly rectangular beam, thereby finally forming a hollow near-rectangular spot.
  • the powder is fed in a hollow near-rectangular spot, thereby realizing the rectangular spot light feeding powder in laser processing.
  • the laser broadband cladding device and method of the invention can split and condense the rectangular spot; the focused spot is a hollow near-rectangular spot, and the powder can be fed inside the laser to achieve precise coupling and improvement of the light powder.
  • + 1 is a schematic view showing the structure and principle of a laser broadband cladding device according to an embodiment of the present invention
  • FIG. 2 is a schematic cross-sectional view showing a principle of splitting of a prism of a light splitting prism according to an embodiment of the present invention
  • FIG. 3 is a schematic perspective view showing a principle of splitting light of a light splitting prism according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram showing the principle of arc concentrating in the condensing mirror of the present invention.
  • FIG. 6 is a schematic view showing the principle of multi-segment arc focusing in the condensing mirror of the present invention.
  • 7a, 7b, and 7c are respectively a schematic structural view of a condensing mirror, a schematic view of a focused spot, and a schematic diagram of a spot energy field in an embodiment of the present invention
  • 8a, 8b, and 8c are respectively a schematic structural view of a condensing mirror, a schematic view of a focused spot, and a schematic diagram of a spot energy field according to another embodiment of the present invention
  • 9a, 9b, and 9c are respectively a schematic structural view of a condensing mirror, a schematic view of a focused spot, and a schematic diagram of a spot energy field in still another embodiment of the present invention.
  • Fig. 10a is a cross-sectional view showing a laser broadband cladding device according to an embodiment of the present invention
  • Fig. 10b is a cross-sectional view taken along line A-A of Fig. 10a. detailed description
  • the laser broadband cladding device of the invention is mainly composed of a beam splitting prism and a collecting mirror.
  • the beam splitting prism is composed of two light splitting planes which are symmetrically arranged and intersect at an angle, and the two light splitting planes can symmetrically reflect the incident solid laser beam into two reversely exiting laser beams; the collecting mirror has two, respectively and the splitting light.
  • the two splitting surfaces of the prism are arranged opposite to each other, and the condensing mirror can respectively reflect the two laser beams reflected by the spectroscopic prism into two symmetrical near-rectangular laser beams, and the two near-rectangular lights are closer and closer in the focusing stroke, forming a narrow and long focusing.
  • the spots overlap and overlap in the focal plane.
  • a laser broadband cladding device according to an embodiment of the present invention, the device includes:
  • the dichroic prism 10 includes a first beam splitting plane and a second beam splitting plane symmetrically disposed, the first beam splitting plane and the second beam splitting plane reflecting the solid rectangular laser 1 into two near rectangular lasers 2;
  • the condensing mirror includes a first concentrating mirror 21 and a second concentrating mirror 22, wherein the focusing mirrors of the first concentrating mirror 21 and the second concentrating mirror 22 are recessed inwardly, respectively receiving two near-rectangular lasers reflected by the first beam splitting plane and the second beam splitting plane, After re-reflection, two focused lasers 3 are generated, and a hollow powder feeding passage 43 is formed in the middle; the two focused lights are superposed on the focal plane, and the defocusing can form the first focusing spot 41 and the second focusing spot 42.
  • the powder feeding pipe 80 is a row of powder feeding pipes composed of a plurality of fine powder pipes, and the powder is fed from the powder inlet 81 of the powder pipe under the action of the shielding gas, and the powder outlet 82 of the powder pipe It is sent out, and the powder bundles are juxtaposed, and are sprayed downward in the middle of the two rectangular beams, and the cross section is strip-shaped and parallel to the rectangular spot.
  • the laser broadband cladding method includes:
  • the solid rectangular laser 1 is reflected as two near rectangular laser 2;
  • the powder bundle can be continuously sent out from the powder feeding channel 80, and the powder beam can be sprayed into the overlapping spot on the focal plane or in the middle of the first focused spot 41 and the second focused spot 42 on the focal plane, the center of the powder bundle
  • the line coincides with the symmetrical center line of the two focused beams;
  • the solid rectangular laser 1 is incident light
  • the near rectangular laser 2 is a light beam that the solid rectangular laser 1 reflects through the dichroic prism 10.
  • the first condensing mirror 21 and the second condensing mirror 22 are two independent mirrors of the same reflecting focusing mirror.
  • the focused laser 3 is a light beam that is reflected by the near-rectangular laser 2 through the condensing mirror, and the first focused spot 41 and the second focused spot 42 are focused spots. Since the solid rectangular laser energy distribution is relatively uniform, the energy distribution of the two near-rectangular lasers obtained by the reflection of the prism is relatively uniform, which facilitates the subsequent adjustment of the spot energy.
  • other solid lasers such as a circular shape, may be used, which can be split and focused to obtain focused spots of other shapes.
  • the dichroic prism 10 is of a slanting type, and the solid rectangular laser 1 that is normally incident is divided into two beams, and is totally reflected and then horizontally emitted.
  • the reflected light is condensed by the condensing mirror and reflected onto the workpiece, wherein the shaded portion in Fig. 1 indicates the laser irradiated portion.
  • the focusing mirror of the concentrating mirror comprises a plurality of vertical focusing lines in a vertical direction and a horizontal focusing line in a plurality of horizontal directions, the vertical focusing line being a combination of one or more of one or more circular arcs, one or more parabolic lines, horizontal focusing A line is a combination of one or more of one or more straight lines, one or more arcs, one or more parabolas.
  • the vertical focus lines of the first concentrating mirror 21 and the second condensing mirror 22 are parabolic lines
  • the horizontal focusing line is an arc, which respectively converge the rectangular laser 2 in the vertical direction and the horizontal direction. .
  • the focused first focused spot 41 and the second focused spot 42 are in a bilaterally symmetrical shape, and the first focused spot 41 and the second focused spot 42 form a gap between the two crescents, that is, the powder feeding path 43.
  • the spot is always wrapped with powder when the spot moves to the left and right, thereby realizing the hollow rectangular spot light to feed the powder.
  • the beam splitting prism 10 includes a first beam splitting plane 101 and a second beam splitting plane 102.
  • the first beam splitting plane 101 and the second beam splitting plane 102 are vertically disposed, and the beam splitting prism 10 passes the first beam splitting light.
  • the plane 101 and the second beam splitting plane 102 can divide the vertically incident rectangular laser 1 into two near-rectangular lasers 2, and the split near-rectangular laser 2 will be horizontally emitted.
  • the beam splitting prism is improved by stretching, and the improved beam splitting prism can divide the rectangular incident laser into two equal beams and emit horizontally to provide two equal light sources for the next gathering. .
  • Laser concentrating methods include parabolic concentrating, arc concentrating, multi-segment arc focusing, etc.
  • the specific principles are as follows:
  • the light source is placed at point A, after being reflected by a parabolic mirror. Converging at point O, with such an improvement, it is possible to receive the horizontal laser light from the spectroscope and focus it.
  • Multi-segment arc focus
  • the arc mirroring is simple in mirror processing, but the energy of the spot is evenly distributed.
  • the heat dissipation at both ends of the spot is large, the energy loss is larger than the middle, and the spot with uniform energy is irradiated to the workpiece, and the workpiece is The actual temperature field is not evenly distributed, but the intermediate temperature is high and the two ends are low. Therefore, the focusing mirror can be improved, and the multi-segment arc focusing shown in Fig. 6 is used.
  • the two ends are arcs with a small radius
  • the middle is a circular arc with a large radius
  • the three connecting portions are connected by an excessive arc. Since the incident light is a laser with a uniform light intensity, the spot after the middle convergence is long, so the energy per unit area is small; the spot after convergence at both ends is short, so the energy per unit area is large.
  • the focusing mirror of the concentrating mirror of the present invention comprises a plurality of vertical focusing lines in a vertical direction and a horizontal focusing line in a plurality of horizontal directions, and the vertical focusing line is a combination of one or more of one or more arcs, one or more parabolas.
  • the horizontal focus line is a combination of one or more of one or more straight lines, one or more arcs, and one or more parabolas.
  • FIG. 7a is a schematic structural view of a condensing mirror according to an embodiment of the present invention.
  • the focusing mirror shown in Fig. 7a By combining the parabolic focusing mirror and the arc focusing mirror, the focusing mirror shown in Fig. 7a can be obtained.
  • the focusing mirror of the condenser is a vertical focusing line in the vertical direction and a horizontal focusing line in the horizontal direction, as shown in Fig. 7a, vertical.
  • the focus line 231 is a parabola
  • the horizontal focus line 241 is an arc.
  • the focused spot shown in Fig. 7b can be obtained.
  • the spot is used for laser processing, the spot is internally powdered.
  • the laser is always wrapped with powder.
  • the energy field of the spot is shown in Figure 7c, which can be used where the incident light is an unfocused spot.
  • FIG. 8a is a schematic structural view of a condensing mirror according to another embodiment of the present invention.
  • the focusing mirror of FIG. 7a can be improved.
  • the vertical focusing line 232 and the horizontal focusing line 242 are both straight lines, and the new one shown in FIG. 8a can be obtained.
  • the plane mirror because the incident light is the focused light, then it is not necessary to focus the rectangular incident light, which simplifies the processing of the focusing mirror.
  • the focused spot is as shown in Fig. 8b.
  • the energy field of its spot is shown in Figure 8c.
  • FIG. 9a is a schematic structural view of a condensing mirror according to still another embodiment of the present invention.
  • the focusing mirror shown in FIG. 9a By combining the parabolic focusing mirror and the multi-segment arc focusing mirror, the focusing mirror shown in FIG. 9a can be obtained, the vertical focusing line 233 is a parabola, and the horizontal focusing line 243 is formed by a plurality of arcs, including the first arc 2431.
  • the curvature of the first circular arc 2431 and the third circular arc 2433 are equal to each other, and the curvature of the second circular arc 2432 is not equal, and may be set in other embodiments.
  • the focused spot shown in Fig. 9b can be obtained.
  • the energy field of the spot is as shown in Fig. 9c.
  • the energy of the focused spot is adjusted to be saddle-shaped along the length direction, that is, the energy at both ends of the spot is high and the intermediate energy is low.
  • the higher energy compensates for the heat loss at both ends and ensures that the energy received by the machined surface is uniform.
  • the condensing mirror is a parabolic focusing mirror and a circular focusing mirror, a parabolic focusing mirror and a linear mirror, and a synthetic mirror of a parabolic focusing mirror and a multi-segment arc focusing mirror, and the rest of the embodiments may also be the rest.
  • Synthetic mirrors such as parabolic focusing mirrors and arc and linear focusing mirrors, arc focusing mirrors and synthetic mirrors with multi-section arc focusing mirrors, are no longer mentioned here.
  • the laser broadband cladding device includes: a beam splitting prism 10, the beam splitting prism 10 includes a first splitting plane and a second beam splitting plane, a first splitting plane and a second The splitting plane reflects the solid rectangular laser 1 into two near-rectangular lasers 2;
  • the condensing mirror includes a first concentrating mirror 21 and a second condensing mirror 22, and the first concentrating mirror 21 and the second condensing mirror 22 are recessed inwardly, respectively receiving two near-rectangular lasers reflected by the first splitting plane and the second splitting plane, and generating two bundles Focusing the laser to form a hollow focused beam;
  • the powder feeding pipe 80 is a row of powder feeding pipes composed of a plurality of fine powder pipes, and the powder is fed from the powder inlet 81 of the powder pipe under the action of the shielding gas, and the powder outlet 82 of the powder pipe Sending, the multi-powder is sprayed downward in the middle of the two focused lasers, vertically entering the rectangular spot on the focal plane or between two parallel rectangular spots on the off-focus surface.
  • the laser broadband cladding device further includes: Powder tube for feeding powder in light;
  • the bracket 60 is fixed to the inside of the casing 40, and the beam splitting prism 10 is fixedly disposed on the bracket 60.
  • the laser light entrance 70 is disposed directly above the beam splitting prism 10, and the casing 40 and the upper cover 50 are spirally connected, and the upper cover 50 is spirally connected to a fiber laser (not shown); the bracket 60 is fixedly disposed on the casing 40.
  • the dichroic prism 10 is fixedly mounted at a central position of the bracket, and the first concentrating mirror 21 and the second condensing mirror 22 are fixedly disposed inside the casing 40 corresponding to the two reflecting surfaces of the dichroic prism 10, respectively.
  • the two spectroscopic surfaces of the dichroic prism 10 may not be set to be vertical.
  • the first condensing mirror 21 and the second condensing mirror 22 are not on the same horizontal plane as the dichroic prism 10, and are installed according to actual conditions to receive the spectroscopic light. The same effect can be obtained by concentrating the near-rectangular laser reflected by the prism.
  • the laser broadband cladding device and method of the present invention consists of a solid rectangular laser emitted by a semiconductor laser, which is perpendicularly incident on the optical path of the present invention, and is divided into two equal-partial rectangular beams by a diagonal splitting prism, respectively
  • the two sides are horizontally ejected; the horizontally emitted near-rectangular beam passes through the concentrating mirror, and the broad side of the rectangular beam is focused by the wide-side parabola of the collecting mirror, and the long side of the rectangular beam is focused by the long-side aspherical arc of the collecting mirror, and finally A hollow near-rectangular spot is formed, and powder is fed in the hollow near-rectangular spot, thereby realizing the rectangular spot light feeding in the laser processing.
  • the laser broadband cladding device and method of the invention can split and condense the rectangular spot; the focused spot is a hollow near-rectangular spot, and the powder can be fed inside the laser to achieve precise coupling and improvement of the light powder.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

La présente invention concerne un dispositif de placage au laser à large bande, constitué principalement d'un prisme (10) de division de faisceaux réfléchissant, de deux miroirs (21, 22) de collecte réfléchissants, et d'une canalisation (80) de distribution de poudre. Le prisme (10) de division de faisceaux et les deux miroirs (21, 22) de collecte peuvent remettre en forme des faisceaux (1) laser parallèles circulaires ou rectangulaires incidents et réfléchir ceux-ci lorsque deux faisceaux laser (2) d'un laser quasi-rectangulaire se trouvent à un angle de focalisation, l'espacement des deux faisceaux de lumière quasi-rectangulaires devenant de plus en plus proche dans la plage focale, et deux points lumineux droits ou en forme d'arc étant formés sur un plan focal et se chevauchant. L'invention concerne en outre un procédé de placage au laser à large bande. Les présents procédé et dispositif de placage au laser à large bande présentent une grande largeur et une efficacité élevée, une précision élevée dans le couplage de poudre et du faisceau laser, et une bonne qualité de canal de soudure.
PCT/CN2014/078244 2013-07-17 2014-05-23 Procédé et dispositif de placage au laser à large bande WO2015007117A1 (fr)

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CN201310300229.2A CN103399405B (zh) 2013-07-17 2013-07-17 一种激光宽带熔覆装置及方法
CN201310300229.2 2013-07-17

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CN110938817A (zh) * 2019-12-05 2020-03-31 西安必盛激光科技有限公司 一种光内同轴送粉的矩形光斑熔覆装置
CN111005016A (zh) * 2019-12-27 2020-04-14 浙江工业大学 一种扫描振镜辅助超音速激光复合高速沉积装置
CN111650756B (zh) * 2019-12-31 2021-05-14 南京中科煜宸激光技术有限公司 使用单激光光束实现双光斑复合能场的方法、装置、工艺及其应用
CN111560612B (zh) * 2020-06-18 2022-03-01 河北光束激光科技有限公司 一种可改变高斯光能量分布不均的激光熔覆装置及方法
CN114871571B (zh) * 2022-05-27 2023-05-26 华中科技大学 一种蓝光激光焊接机器人的一体式主副分束装置
CN116140680A (zh) * 2023-04-20 2023-05-23 太原理工大学 一种结合脉冲激光辅助加热的铣削装置

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