Electric arc additive forming method for aluminum alloy structural member

A technology of additive forming and structural parts, which is applied in arc welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problem of the compactness of the forming structure, the difficulty in guaranteeing the stability of the forming process, the unevenness of the forming surface, and the inability to effectively form, etc. problems, to achieve the effect of improving the geometric shape forming ability, good internal quality and stable forming process

Inactive Publication Date: 2018-06-15
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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Problems solved by technology

The disadvantage of this patent is that for aluminum alloy structural parts, as the heat accumulates during the forming process, the flatness of the forming surface varies. As the number of layers increases, it i

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  • Electric arc additive forming method for aluminum alloy structural member
  • Electric arc additive forming method for aluminum alloy structural member

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[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

[0025] A method for arc additive forming of aluminum alloy structural parts, the method comprises the following steps by welding several layers of aluminum alloy materials on the aluminum alloy forming parts: (1) setting working current, wire feeding speed, welding seam width, welding wire diameter The predetermined value of , where the current is 80-200A, the wire feeding speed is 4-10mm / s, the welding diameter is 0.8-2mm, and the weld width is 3-10mm; 1-layer welding, wherein the n+1-layer welding includes r-beads, and the welding paths of adjacent welds are in opposite directions; (3) The n+2-th layer welding is completed, wherein the n+2-layer welding includes r-beads, The w...

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Abstract

The invention discloses an electric arc additive forming method for an aluminum alloy structural member. By welding a plurality of layers of aluminum alloy materials onto an aluminum alloy forming part, the method includes the following steps that (1) predetermined values of the working current, wire feeding speed, welded joint width and welding wire diameter are set; (2) the (n+1)th layer of welding is executed on the forming part, (n+1) layers of welding include r weld beads, and the directions of welding paths of the adjacent weld beads are opposite; (3) the (n+2)th layer of welding is completed, (n+2) layers of welding include r weld beads, and the welding path of the second layer of welding is opposite to that of the first layer of welding; and (4) the second step and the third step are executed repeatedly, (n+m) layers of welding are competed ultimately, and the aluminum alloy structural member is formed at last; wherein n is equal to 1,2,3,...,; and m is equal to 4,5,6, ....

Description

technical field [0001] The invention relates to wire arc rapid prototyping technology, in particular to a material-adding method for arc forming of aluminum alloy structural parts. Background technique [0002] Aluminum alloy materials have low density, strength ratio close to or exceeding that of high-quality steel, and good plasticity. They are widely used in industry, especially 2-series high-strength aluminum alloys and 5-series anti-rust aluminum alloys. been widely used. [0003] Arc wire feeding additive manufacturing technology is a method of accumulating molten welding wire into a three-dimensional structural metal structure through the welding principle. Compared with laser rapid prototyping technology, arc wire feeding additive manufacturing technology has the advantages of low cost, high forming efficiency, and compact forming structure, and is especially suitable for rapid prototyping of aluminum alloy structural parts. [0004] The arc additive forming method...

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Application Information

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IPC IPC(8): B23K9/04
Inventor 王爱民王小龙侯劲松钱深研李悦博
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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