A method for manufacturing metal hollow sphere composite materials by adding and subtracting materials

Abstract

The invention provides a method for manufacturing metal hollow sphere composite materials by adding and subtracting materials. The metal hollow sphere composite material is composed of hollow spheres embedded in a matrix and regularly arranged in a certain spatial arrangement and a metal matrix. First, the target parts It is converted into a digital model file, and after the printing path is designed, the metal powder or filamentous material is directly fused and deposited on the substrate. According to the spatial arrangement of the hollow balls designed by computer simulation, the milling and cutting function of the CNC machine tool is used. Accurately process an array of round holes whose size matches the diameter of the hollow spheres in a certain arrangement on the deposition layer, put metal hollow spheres of uniform size into the processed round holes, and then proceed to the next layer of laser powder deposition or wire deposition , repeating the process of round hole milling-hollow sphere placement-deposition forming, the composite material with hollow spheres arranged in three-dimensional space can be produced. Realize the integration of design and manufacture of metal hollow sphere composite materials, and the structural performance can be controlled.

Description

technical field [0001] The invention relates to a method for manufacturing a composite material increase and decrease material, in particular to a method for manufacturing a metal hollow sphere composite material increase and decrease material, and belongs to the technical field of vibration and noise reduction functional materials. Background technique [0002] Due to the many advantages and special properties of lightweight, vibration and noise reduction, and multi-functionality of porous metal materials, it has important application value in aerospace, ships, military and other fields. However, with the gradual improvement of the performance requirements of porous metal materials in engineering applications, some shortcomings of traditional porous metal materials are gradually exposed. For example, metal foam has the disadvantage of uneven pore size and distribution, which leads to uneven material properties; the high directionality of honeycomb materials leads to large d...

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Problems solved by technology

The arrangement of metal hollow spheres in the composite material has a great influence on the mechanical properties and functional characteristics of the composite material. The cloth is random, and it is difficult to manufacture precisely according to the design, which leads to uncontrollable structure and performance of metal hollow sphere composite materials, and it is difficult to make gradient functional composite materials that meet the design according to engineering needs, and it is impossible to integrate structure and function. It is also difficult to ensure the requirements of high machining accuracy, which makes it difficult to balance the mechanical properties and functional properties of metal hollow sphere composites prepared by traditional preparation techniques

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