Dynamic numerical simulation technology for laser melting deposition formed molten pool

A numerical simulation technology, laser melting deposition technology, applied in the field of additive manufacturing, which can solve the problem of difficult to capture the flow and penetration depth information inside the molten pool

Inactive Publication Date: 2017-05-24
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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Problems solved by technology

Experimental methods are difficult to capture the internal flow and penetration information of the molten pool

Method used

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  • Dynamic numerical simulation technology for laser melting deposition formed molten pool
  • Dynamic numerical simulation technology for laser melting deposition formed molten pool
  • Dynamic numerical simulation technology for laser melting deposition formed molten pool

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Embodiment Construction

[0046] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail b...

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Abstract

The invention relates to a dynamic numerical simulation technology for a laser melting deposition formed molten pool. The technology comprises the steps that (1) a numerical model is established, and a grid is divided; (2) model properties and material properties are set; (3) a heat source model is selected; (4) boundary conditions are set; (5) a solver is selected; (6) model initialization is performed; and (7) a temperature filed, a velocity field and molten pool morphology are calculated. According to a calculation model provided in the dynamic numerical simulation technology for the laser melting deposition formed molten pool, a free surface and a mushy zone of the molten pool are considered, and the calculated molten pool morphology, temperature field, velocity filed and free surface are more approximate to truth.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to a numerical simulation method for dynamics of a molten pool formed by laser fusion deposition. Background technique [0002] Laser melting deposition forming technology is an advanced manufacturing technology developed in the 1990s, which can realize the manufacture of high-performance complex structural metal parts. Laser melting deposition forming technology is a new technology of free near-net shape without mold formed by combining laser cladding and rapid prototyping technology, especially suitable for rapid manufacturing of high-performance complex structure difficult-to-machine metal parts. [0003] The principle of laser melting deposition forming is: firstly, according to the CAD model of the part, the 3D data of the part is sliced ​​into a series of 2D contour data according to a certain thickness. According to the 2D profile data, the laser b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2111/10G06F2119/06
Inventor 邢本东王向明胡宗浩
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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