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Title:
BIMETAL ELECTRIC ARC ADDITIVE MANUFACTURING METHOD WITH MIG/MAG AS HEAT SOURCE
Document Type and Number:
WIPO Patent Application WO/2020/215634
Kind Code:
A1
Abstract:
Disclosed is a bimetal additive manufacturing method with MIG/MAG as a heat source. The method involves using a twin-wire, i.e. MIG and MAG, as a heat source, using a welding wire A and a welding wire B in a bimetal welding wire as a filling material for fusion covering, subjecting, by means of an additive manufacturing software, a workpiece to be printed to modeling, determining the height of each additive layer according to the material performance of the workpiece, and subjecting a part to hierarchical slicing by means of electric arc additive manufacturing slicing software. Except for the top layer, the fusion covering mode for the slicing of each layer is where the outer wall is subjected to concentric-square-shaped linear fusion covering through the welding wire A, and the inner layer is subjected to linear filling fusion covering through the welding wire B; and the fusion covering mode for the slicing of the top layer is where linear filling fusion covering is conducted through the welding wire A. Two different metal welding wires are used for weaving and fusion covering, so as to obtain a 3D printed part that has requirements for the strength and hardness of the outer layer of the part, but does not have as high requirements for the strength and hardness of the inner layer of the product, which can not only effectively reduce the cost of the preparation of the product, but can also obtain a bimetal product satisfying requirements.

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Inventors:
CHENG YUAN (CN)
WU XIAO (CN)
YUAN YURONG (CN)
Application Number:
PCT/CN2019/112727
Publication Date:
October 29, 2020
Filing Date:
October 23, 2019
Export Citation:
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Assignee:
NANJING YINGNIGEMA INDUSTRIAL AUTOMATION TECH CO LTD (CN)
International Classes:
B23K9/04; B33Y10/00
Domestic Patent References:
WO2018067918A22018-04-12
Foreign References:
CN110039155A2019-07-23
CN109986169A2019-07-09
CN109623098A2019-04-16
CN107931781A2018-04-20
CN109623097A2019-04-16
CN106392348A2017-02-15
CN108067715A2018-05-25
EP3069816B12018-09-19
Attorney, Agent or Firm:
NANJING TAIPU PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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