Electric arc fused additive manufacturing method for multidirectional steel connection

Abstract

The invention belongs to the field of additive manufacturing, and discloses an electric arc fused additive manufacturing method for a multidirectional steel connection. The method comprises the following steps of S1, performing three-dimensional modeling on the multidirectional steel connection to obtain a main pipe model and all branch pipe models of the multidirectional steel connection; S2, planning a stacking path of the main pipe model in a manner of equal-thickness hierarchy planar slicing and equidistant biased filling, and generating a corresponding motion command according to the stacking path; S3, planning a stacking path of each branch pipe model in the manner of equal-thickness hierarchy planar slicing and equidistant biased filling, and generating corresponding motion commandsaccording to the stacking paths; and S4, controlling electric arc fused additive manufacturing equipment to perform main pipe forming according to the stacking path of the main pipe model, and controlling the electric arc fuse additive manufacturing equipment according to the motion commands of the stacking paths of all the branch pipe models to manufacture all branch pipes on a main pipe. The method avoids the defects that the shrinkage cavity defect and the shrinkage porosity defect are liable to generate during monoblock casting, weldability is poor during welding, and the like, and overcomes the problem that curved surface forming is hard to directly realize by an electric arc fused additive manufacturing technology, and the like.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and more specifically relates to an arc fuse additive manufacturing method for multi-directional steel nodes. Background technique [0002] Multidirectional steel joints are generally the key components of high-rise buildings, giant ocean platforms, and large bridge structures. Mechanical properties and forming accuracy. At present, there are two main methods of manufacturing multidirectional steel nodes: casting and welding. Casting, that is, the multi-directional steel joints are manufactured by integral casting. Because the wall thickness of the intersecting parts of the multi-directional steel joints is relatively large, it is a hot joint, and defects such as shrinkage cavities and shrinkage porosity are prone to occur at this place during casting. At the same time, due to the thick wall The cooling rate of the part is slow, and coarse grains are easily formed there, which deteriorates...

AI Technical Summary

Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides an arc fuse additive manufacturing method for multi-directional steel nodes, the purpose of which is to overcome the current deficiencies in the manufacture of multi-directional steel nodes by casting and welding methods, Solve the technical problems that it is difficult to directly form irregular curved surfaces when the multi-directional steel nodes are manufactured by arc fuse additives, and the formed parts are easily deformed locally

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