A kind of metal parts laser light inner wire feeding cladding laser shock forging composite additive manufacturing method
A metal parts, laser shock technology, applied in the field of metal additive manufacturing, can solve problems such as thermal stress and deformation cracking, shrinkage porosity, non-fusion, etc., to save a lot of time, reduce production costs, and solve the effect of secondary heating
Active Publication Date: 2019-11-26
GUANGDONG UNIV OF TECH
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Problems solved by technology
[0003] However, based on the working principle of discrete-stacking and additive molding in the forming process, the following defects will inevitably occur inside the formed metal parts (1) lack of fusion, cracks and shrinkage porosity, etc.; (2) thermal stress and deformation cracking
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[0012] The present invention will be further described below in conjunction with specific embodiment:
[0013] See attached figure 1 As shown in this embodiment, a metal parts laser light internal wire feeding cladding laser shock forging composite additive manufacturing method described in this embodiment, the steps are as follows:
[0014] (1) The circular solid beam of the continuous laser beam is converted into a hollow conical focused beam through the optical path, and the coaxial wire feeding method in the light is used to clad the molten metal wire by thermal effect, while another pulsed laser beam is used The shock wave mechanical effect performs synchronous impact forging on the cladding layer in the temperature region prone to plastic deformation, and performs composite manufacturing;
[0015] (2) The cladding layer is stacked layer by layer to form the workpiece.
[0016] During the manufacturing process, the coaxial wire feeding speed of the continuous laser beam...
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The invention discloses a metal part laser light inner wire feeding cladding laser shock forging composite additive manufacturing method, which is based on the composite manufacturing process of laser thermal effect and shock wave mechanical effect, when the heat source melts the metal wire to form a cladding area, The cladding area is subjected to laser shock treatment simultaneously, and the forming and strengthening process is completed in one-step manufacturing process. It takes a lot of time and greatly reduces the production cost. It can also precisely control the parameters such as laser beam diameter and shape, pulse width, pulse energy, repetition frequency, etc., to adapt to high-quality forming of various materials and complex structural parts; at the same time, based on continuous laser Light-wire coaxial conveying cladding forming can efficiently utilize metal wires to form high-quality cladding layers.
Description
technical field [0001] The present invention relates to the technical field of metal additive manufacturing, in particular to a metal parts laser light inner wire feeding cladding laser impact forging composite additive manufacturing method Background technique [0002] Additive manufacturing technology refers to a scientific and technological system that is based on the principle of discrete accumulation and is driven by the three-dimensional data of parts to directly manufacture parts. Additive manufacturing is different from traditional "removal" manufacturing, and does not require original embryos and molds. This technology can not only complete The rapid manufacturing of difficult-to-machine metal parts with complex shapes can also realize the rapid prototyping of functionally gradient material parts according to the working conditions and special performance requirements of different parts of the parts, so it is of great importance in aerospace, automotive, medical, met...
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IPC IPC(8): B22F3/105B33Y10/00
CPCB33Y10/00B22F10/00B22F10/36B22F12/43B22F10/25B22F12/90Y02P10/25
Inventor 张永康秦艳张峥杨青天
Owner GUANGDONG UNIV OF TECH