Additive manufacturing method of intermetallic compound part

A technology of intermetallic compounds and additive manufacturing, which is applied in the direction of manufacturing tools, metal processing equipment, plasma welding equipment, etc., can solve the problems of difficulty in preparing pure intermetallic compound parts, difficulty in manufacturing complex structural parts, long production cycle, etc., to achieve Strong production practicability, reduced processing difficulty, and short production cycle

Active Publication Date: 2018-04-06
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the existing problems in the prior art, the present invention proposes an additive manufacturing method for intermetallic compound parts, which solves the complex process, long production cycle, and difficulty in manufacturing complex structural parts in the prior art, as well as the difficulty in preparing related alternate wire feeding methods. Pure intermetallic compound parts and other technical issues

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  • Additive manufacturing method of intermetallic compound part
  • Additive manufacturing method of intermetallic compound part
  • Additive manufacturing method of intermetallic compound part

Examples

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Embodiment 1

[0033] In this embodiment, to realize the arc additive manufacturing of Ni-Al intermetallic compound parts, two kinds of wires are used as filling materials, and the design dimensions of the parts are as follows: the inner diameter of the bottom is The inner diameter of the top is The wall thickness is 8mm, the height is 200mm, and the size of the substrate used is 400mm×400mm×20mm. The welding wire is Ni-1 pure nickel welding wire with a diameter of 1.2mm and 1070 pure aluminum alloy welding wire with a diameter of 1.0mm, and the substrate material is Q235 steel. The specific manufacturing steps are as follows:

[0034] (1) Fix the substrate on the experimental platform, determine the walking path of the welding torch according to the shape of the intermetallic compound part, and select the appropriate deposition starting point; in practice, each cross-section of the available part is a planar figure, the Plane graphics are composed of many lines, and each line is regarde...

Embodiment 2

[0041] In this embodiment, to realize the arc additive manufacturing of Ni-Al intermetallic compound parts, one kind of wire material and one kind of powder material are used as filling materials, and the design dimensions of the parts are as follows: cylindrical inner diameter The wall thickness is 8mm, the height is 100mm, and the size of the substrate used is 300mm×300mm×10mm. The welding wire is Ni-1Z pure nickel welding wire with a diameter of 1.2mm and 150 mesh pure aluminum powder, and the substrate material is Q235 steel. The specific manufacturing steps are as follows:

[0042] (1) Fix the substrate on the experimental platform, determine the walking path of the welding torch according to the shape of the intermetallic compound part, and select the appropriate deposition starting point;

[0043] (2) Adjust the wire feeding speed of nickel wire to make it 3.48m / min, adjust the powder feeding rate of aluminum powder to make it 1.39g / min, and adjust the argon shielding...

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Abstract

The invention provides an additive manufacturing method of an intermetallic compound part. The method comprises the following steps: 1) designing a travelling path of a high energy beam heat source reasonably according to the shape of a part; 2) adjusting the wire feed rates of different wire-like materials and the powder feeding amount of a powdery material or powder proportion to met the component proportion of an intermetallic compound; 3) selecting proper process parameters, feeding a filling material into the heat source and melting the filling material, and then carrying out freezing, cooling and forming; 4) changing the heights between the heat source and deposited parts according to each depositing thickness, wherein the height is consistent to a set value, and then carrying out stacking forming continuously; and 5) continuously repeating the steps 3 and 4 to finally obtain the intermetallic compound part. According to the method provided by the invention, two different types of wire-like materials or one wire-like material and one powdery material or the powdery material is adopted fully. The method provided by the invention for preparing the intermetallic compound is short in production period and high in utilization ratio of materials, and the performance of the part is improved compared with that of a casting.

Description

technical field [0001] The invention belongs to the field of metal material processing, and in particular relates to an additive manufacturing method for intermetallic compound parts. Background technique [0002] An intermetallic compound is a compound composed of two or more metal components in proportion, which has a different crystal structure and basic properties of the metal than its constituent elements. Intermetallic compounds have the advantages of high hardness, high melting point, high creep resistance, good oxidation resistance, etc.; some also have special physical and chemical properties such as electrical, magnetic, and acoustic properties, which make them widely used in aerospace , biomedical and other fields have great application prospects. [0003] The traditional manufacturing methods of intermetallic compound parts include melting casting method, combustion synthesis method, mechanical alloying method, directional solidification method, etc. The manufac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K10/02
CPCB23K10/027
Inventor 高明李健曾晓雁王福德
Owner HUAZHONG UNIV OF SCI & TECH
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