Metal material high-energy-beam additive/subtractive material and on-line laser ultrasonic detection composite processing method

Abstract

The invention relates to a metal material high-energy-beam additive / subtractive material and on-line laser ultrasonic detection composite processing method and belongs to the field of metal material additive / subtractive composite manufacturing (3D printing). The processing method includes the following steps: S1) additive moulding: performing layer-by-layer fusion / solidification stacking with a high-energy-beam fused metal material according to a predetermined route; S2) subtractive processing: performing subtractive processing to the deposited and shaped material to prepare a detection plane having high size-precision and surface quality; S3) laser ultrasonic detection: carrying out laser ultrasonic nondestructive detection on the surface to determine whether defects exist on the surface of or in interior of the material and determine the positions of the defects; and S4) detection determination and treatment: removing excessive surface or subsurface defects through subtractive processing, and adjusting an additive process to perform additive deposition until the whole metal component is completed, and if no defect exists, directly completing the on-line detection and performing high-quality work piece shaping circularly and repeatedly. The method solves a problem that a process of single additive manufacturing of components cannot achieve on-line detection and repair, and can reduce defection rate of products and save cost.

Description

technical field [0001] The invention relates to a metal material high-energy beam addition and subtraction material-on-line laser ultrasonic detection composite processing method in the field of metal material addition and subtraction composite manufacturing (3D printing). Background technique [0002] Additive manufacturing is the discretization of three-dimensional solids into several two-dimensional planes, which are produced by superimposing materials layer by layer, and finally form three-dimensional parts. Subtractive manufacturing is the removal of raw materials through machining methods such as turning and milling to finally produce finished products. Additive and subtractive composite manufacturing is a combination of the two, and after a certain number of layers of additive manufacturing, a subtractive process is introduced to perform high-precision subtractive processing on deposited materials in real time. The organic combination of additive and subtractive proc...

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Problems solved by technology

[0006] In view of the problems existing in the above-mentioned prior art, the purpose of the present invention is to research and design a new type of metal material high-energy beam addition and subtraction-online laser ultrasonic detection composite processing method, in order to effectively solve the problem of the surface and interior of additively manufactured parts. The problem that the defect cannot be detected and removed online; at the same time, the defective part is removed online by using the subtractive function, and then the redeposition is improved by the additive process, so as to realize the online detection and repair of the defect

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