Complex metal part forming method adopting combination of electric arc additive and laser additive

Abstract

The invention discloses a complex metal part forming method adopting combination of an electric arc additive and a laser additive. The complex metal part forming method comprises the steps that three-dimensional modeling is conducted on a part entity, geometric feature decomposition is conducted on a three-dimensional entity model, a part feature additive forming method is divided, forming processparameters of all features are determined, forming sorting is conducted on all the features, slicing and layering treatment is conducted on all the features, and all the features are sequentially formed according to the feature forming sorting and a treatment method of a combination interface between the adjacent features. According to the complex metal part forming method, the advantages of efficient electric arc additive manufacturing forming and fine laser additive manufacturing forming are effectively combined, compared with traditional forging, the machining period is shortened, the overall forming performance of a part is guaranteed, the quality of a fine and complex structure is guaranteed, the production efficiency is improved, and the machining cost is reduced. Meanwhile, a laserremelting method is adopted, the number of cracks and air holes in a combination interface area of a dissimilar additive process is reduced, meanwhile, structure distribution is more uniform, and themechanical property of the combination interface is improved.

Description

technical field [0001] The invention belongs to the field of metal additive manufacturing, and in particular relates to a complex metal part forming method using arc additive and laser additive, which can improve processing quality and reduce processing cost while shortening the processing cycle. Background technique [0002] At present, there are many parts with complex structures and high precision requirements in the aerospace field, such as the casing of aero-engines. When processing complex parts with traditional processing methods, the milling process of forging blanks is mainly used. The process is complex, the material utilization rate is low, and the cutting allowance is large, often requiring several months of processing hours. The processing cycle of several months also obviously limits the production capacity and equipment utilization rate, and has become a bottleneck problem in the development and manufacture of some complex products in the aerospace field. [...

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of high-efficiency processing of high-precision and complex-structured parts in the prior art, and to provide a complex metal part forming method that combines arc-added material and laser-added material, effectively combining the two methods of arc-added material and laser-added material. Advantages of this process method, and improve the microstructure and mechanical properties of the bonding interface, shorten the production cycle, and improve the utilization rate of materials

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