Electric arc-laser composite additive manufacturing method

A technology of additive manufacturing and electric arc, which is applied in the field of additive manufacturing, can solve the problems of large internal stress, no improvement in the stress distribution of the forming structure, and coarse grains, so as to reduce anisotropy, improve dimensional accuracy and structural performance, and reduce The effect of martensitic structure
CN110860797AInactive Publication Date: 2020-03-06725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
Publication Date
2020-03-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an electric arc-laser composite additive manufacturing method. The method comprises the following steps that the surface of a metal part to be machined is subjected to mechanical polishing, cleaning for oil stain removing and drying, the size of the metal part is measured, and then the metal part is placed on a workbench and fixed with a clamp for standby use; a three-dimensional model of the metal part to be machined is established to obtain a three-dimensional model file, the file is subjected to slicing treatment, a machining path of the electric arc additive material is obtained, process parameters of the electric arc additive material are set, and the part to be machined is subjected to layered sedimentation under an inert gas environment by adopting an electric arc fuse wire; and according to the texture of the machined metal part and the effective wall thickness of a to-be-printed layer, a corresponding laser scanning track, scanning power and scanning speed are selected through simulation of a temperature field, and the printed cladding layer is subjected to laser heat treatment. According to the method, the coarse columnar crystals in the forming part can be improved, the martensitic structure and dislocation are reduced, the anisotropy of additive manufacturing is remarkably reduced, and the forming precision is effectively controlled.
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Description

technical field

[0001] The invention relates to the field of additive manufacturing, in particular to an arc-laser composite additive manufacturing method. Background technique

[0002] The additive manufacturing technology of metal parts was developed on the basis of rapid prototype manufacturing technology in the late 1990s, and it is an advanced manufacturing technology for directly preparing fully dense metal parts. It combines rapid prototyping technology, high-power heat source fusion deposition technology and advanced material preparation technology, adopts the idea of ​​digital discrete / build-up forming additive manufacturing, melts and deposits synchronously transported metal powder or wire through high-power heat source, and deposits on the substrate The upper layer is piled up layer by layer, so as to realize the "near net shape manufacturing" of high-performance fully dense metal parts with complex shape, fine structure and uniform composition. The metal materia...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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