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Calculation method for critical overlapping rate in laser cladding forming process for vertical surface

A technology of laser cladding and forming process, which is used in the improvement of process efficiency, metal material coating process, additive processing, etc., can solve the problem of inability to fuse the surface contour assumption, and achieve good surface flatness, simple and easy to achieve Effect

Active Publication Date: 2017-11-17
SUZHOU UNIV
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Problems solved by technology

However, under the facade cladding process, since the cladding single pass on the facade is asymmetrical, the apex of the melt channel tends to sag under the action of gravity, so the surface profile of the melt channel cannot be assumed to be the commonly used symmetry Model

Method used

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  • Calculation method for critical overlapping rate in laser cladding forming process for vertical surface
  • Calculation method for critical overlapping rate in laser cladding forming process for vertical surface
  • Calculation method for critical overlapping rate in laser cladding forming process for vertical surface

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Embodiment Construction

[0046] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0047] The present invention is a research on the facade laser cladding forming technology, and mainly studies a calculation method for the critical overlap rate suitable for the facade laser cladding forming process; at the same time, the critical offset of the facade melting channel is calculated according to different process parameters Modeling, and the significance test of the obtained regression equation model is carried out to establish the final regression equation.

[0048] The process equipment used in this research mainly includes: fiber laser, hollow laser light coaxial powder feeding nozzle, KUKA robot, workbench, powder feeding system and control center; some...

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Abstract

The invention provides a calculation method for a critical overlapping rate in a laser cladding forming process for a vertical surface. The method comprises the steps of defining a calculation formula for the overlapping rate at first, then processing the images of the contours of welds in the vertical surface by virtue of Matlab software, extracting contour lines of the welds and carrying out combined filtering to obtain a discrete function of the contours, and finally calculating functions of a superposition area and a gap area of the contours of each two adjacent welds about an offset by means of discrete integral, and then calculating the critical overlapping rate of the welds in the vertical surface.

Description

technical field [0001] The invention relates to a calculation method for a critical lap rate in a facade laser cladding forming process, and belongs to the technical field of laser cladding. Background technique [0002] Laser rapid prototyping is an advanced manufacturing technology developed in recent years, and has become a research hotspot in the field of laser cladding technology. The principle of laser cladding rapid prototyping is: with the support of CAD / CAM software, the solid model of the part is drawn and the solid model is layered, the geometric information of each layer section is obtained and converted into the motion trajectory information of the machine tool. During cladding forming, the laser beam is irradiated on the surface of the substrate to form a molten pool. The cladding material is continuously transported into the molten pool through a powder feeder and rapidly melted and solidified to form a cladding layer. It moves continuously under a given scann...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10B22F3/105B33Y10/00B33Y50/02
CPCC23C24/10B33Y10/00B33Y50/02B22F10/00B22F10/32B22F10/25B22F10/36B22F10/366B22F10/80Y02P10/25
Inventor 傅戈雁史建军邓志强刘宇
Owner SUZHOU UNIV
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