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Metal part inside-laser wire-feeding cladding laser shocked and forged composite additional material manufacturing method

A technology of metal parts and laser shock, which is applied in the field of metal additive manufacturing, can solve problems such as thermal stress and deformation cracking, shrinkage porosity, and lack of fusion, so as to reduce production costs, solve secondary heating, and save a lot of time.

Active Publication Date: 2017-11-10
GUANGDONG UNIV OF TECH
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  • Claims
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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

Method used

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  • Metal part inside-laser wire-feeding cladding laser shocked and forged composite additional material manufacturing method

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Embodiment Construction

[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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Abstract

The invention discloses a metal part inside-laser wire-feeding cladding laser shocked and forged composite additional material manufacturing method. The metal part inside-laser wire-feeding cladding laser shocked and forged composite additional material manufacturing method is based on a composite manufacturing process of the laser thermal effect and the shock wave mechanical effect, a cladding zone is subjected to laser shock treatment synchronously while metal wires are fused by a heat source to form the cladding zone, forming and reinforcement processes are completed in a one-step manufacturing procedure, the remarkable characteristics of high efficiency and high quality are achieved, the defects of secondary heating, heat stress and lowered efficiency caused by a secondary reinforcement process are overcome, lots of time is saved, the production cost is greatly lowered, and parameters such as laser beam diameter and shape, pulse width, pulse energy and repetition frequency can be accurately adjusted and controlled so that the method can adapt to high-quality forming of various material and complex structural parts; and meanwhile, laser-wire coaxial conveying cladding forming is adopted based on continuous laser, and high-quality cladding layers can be formed by efficiently using the metal wires.

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...

Claims

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Application Information

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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
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