Laser cladding method for cone-shaped part surface
A laser cladding and cone technology, which is applied in the coating process and coating of metal materials, can solve the problems of difficult cone-shaped surface cladding and complex shapes, and achieves a high-quality, easy-to-implement and high-efficiency Effect
Active Publication Date: 2013-07-03
SHANGHAI JIAO TONG UNIV
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Problems solved by technology
However, the cone-shaped surface is a spatial surface with a complex shape, and it is difficult to accurately achieve cladding on the cone-shaped surface by conventional trajectory control methods.
Method used
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Embodiment 1
[0029] The present invention is used in the surface cladding of the high-pressure cone-shaped unidirectional inner cone surface and the outer cone surface of the mineral material transportation. The schematic diagram of the laser cladding process is as follows figure 2 , image 3 As shown, first, the cone-shaped part 3 / 9 is coaxially clamped and fixed on the positioner 1 through the tooling 2 and the positioner 1, and the coaxial powder feeding powder flow 5 and the laser beam 6 emitted by the laser processing head 4 converge on the laser beam. The position of the cladding working point P. The laser cladding working point P is generally also the focal length position of the laser. At this point, the powder is melted under the heat of the laser and forms a metallurgical bond with the matrix. The coordinate system of the positioner is defined as figure 1 As shown, the positioner is a 2-axis tilting positioner, one is the rotation axis 7 that rotates around the horizontal direct...
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The invention discloses a laser cladding method for a cone-shaped part surface. A cone-shaped part is tilted clockwise for an angle of the self-conical surface until a cladding surface is tilted to a horizontal position; after a robot and a positioner move to an initial position, a laser work head translates forward or backward when emitting a laser and feeding powder coaxially; the positioner drives the cone-shaped part to rotate around a rotating shaft to perform circular motion; each time a laser cladding operating point performs circulating translation for the distance of one laser cladding interval, the positioner rotates for one circle correspondingly, and the time of the positioner for rotating for one circle is equal to that of the laser cladding operating point for performing the translation for the distance of one laser cladding interval; when the laser cladding operating point moves to a required distance or circulates to set times, the cladding is finished, and the laser cladding for the spatial curved surface of the cone-shaped part is finished. The method avoids cumbersome demonstration and complicated off-line programming, is simple, convenient, feasible, efficient, accurate in position and gesture, and good in cladding quality, and has higher practical application value.
Description
technical field [0001] The invention belongs to the field of surface modification of high added value, precision or large parts, and in particular relates to a laser cladding method for the surface of cone-shaped parts. Background technique [0002] Laser cladding is a new surface modification technology, which refers to placing the selected coating material on the surface of the substrate to be clad in different ways and irradiating it with laser to melt it and a thin layer on the surface of the substrate at the same time. And after rapid solidification, it forms a surface coating with extremely low dilution and metallurgical combination with the substrate, which can significantly improve the wear resistance, corrosion resistance, heat resistance, oxidation resistance and electrical properties of the base surface, so as to achieve surface modification or repair. The purpose of this not only meets the requirements for the specific properties of the material surface, but also...
Claims
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Inventor 张轲姚成武李铸国朱晓鹏
Owner SHANGHAI JIAO TONG UNIV