High-energy beam-ultrasonic composite additive manufacturing method for metal materials

An additive manufacturing and metal material technology, applied in the field of metal material additive manufacturing, can solve the problems of difficulty in melting additive manufacturing, small size of parts, cracking, etc., to eliminate internal stress and internal defects, low-cost rapid manufacturing, Simple processing steps
CN104525944AInactive Publication Date: 2015-04-22BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2015-04-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a high-energy beam-ultrasonic composite additive manufacturing method for metal materials and belongs to the field of additive manufacturing (3D printing) of metal materials. The method comprises the steps that based on the technical principle of layer-by-layer accumulation of additive manufacturing, metal forming materials are melted through high-energy beams; after the metal forming materials are melted / solidified layer by layer to accumulate to a certain number of layers, the solidified layers are subjected to ultrasonic peening to have compressive plastic deformation, so the internal stress and the internal defects of formed parts are eliminated, and crystalline grains are refined; afterwards, the process of layer-by-layer melting / solidifying accumulation and the process of ultrasonic peening are continued until the whole forming process of metal members is completed. According to the method, real-time layer-by-layer treatment is performed on the solidified layers through ultrasonic peening, so the internal stress and the internal defects can be effectively reduced or eliminated, the crystalline grains can be refined, and the mechanical property of the metal members through additive manufacturing can be improved.
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Description

technical field

[0001] The invention belongs to the field of metal material additive manufacturing (3D printing), in particular to a metal material high energy beam-ultrasonic composite additive manufacturing method. Background technique

[0002] Additive manufacturing technology is a near-net shape manufacturing technology that uses high-energy beams to melt / solidify metal materials (powder, wire or plate) layer by layer according to the CAD model under computer control, and directly accumulates metal components layer by layer from a three-dimensional model. . Compared with traditional manufacturing methods, it does not require molds, has a short production cycle, high material utilization rate, and can be formed. Traditional methods cannot manufacture complex / ultra-complex structural parts. It has huge development potential and broad application prospects, so it has attracted much attention in recent years. .

[0003] However, the melting and additive manufacturing of me...

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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