Additive manufacturing device and method for improving bonding strength between deposited layers of additive components

Abstract

The invention relates to the technical field of laser additive manufacturing, in particular to an additive manufacturing device and method for improving the bonding strength between deposited layers of additive components, including a laser additive manufacturing module, a laser micro-texture texturing processing module, a mobile platform, Heating baseplate and control computer. In the present invention, through the alternate operation of the laser material addition module and the laser micro-texture texturing processing module, laser micro-texture texturing is performed on the surface of the deposited layer in the process of laser material addition processing, and the distribution of concave-convex intervals on the surface of the deposited layer is constructed. , Good wettability texture morphology, in order to improve the bonding strength between the subsequent deposition layer and the pre-deposition layer, and can eliminate the internal residual stress of the additive component, improve the mechanical properties of the laser additive component, and prolong its service life.

Description

technical field [0001] The invention relates to the field of laser additive manufacturing processing, in particular to a laser additive manufacturing method and device for improving the bonding strength between deposition layers of additive components. Background technique [0002] Laser additive manufacturing (laser additive manufacturing, commonly known as 3D printing), using alloy powder or wire as raw material, through high-density laser in-situ metallurgical melting / rapid solidification layer by layer, directly from the digital model of the part to complete the full-density, high-performance Compared with the manufacturing technology of traditional metal components, the forming and manufacturing technology of large complex metal structures has the following advantages: (1) High processing efficiency and short manufacturing process; (2) The components have fine grains, uniform composition, and dense structure (3) High degree of manufacturing flexibility, not limited by...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the deposition of additive components in view of the low bonding strength between the deposition layers of laser additive manufacturing components, and defects such as pores, microcracks, and incomplete melting usually occur inside the components, especially in the bonding area of ​​the deposition layers. Apparatus and method for additive manufacturing of interlayer bonding strength

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