Arc additive manufacturing method for aluminum alloy gradient structural parts
A technology of additive manufacturing and gradient structure, which is applied in manufacturing tools, additive processing, arc welding equipment, etc., can solve the problems of inability to process gradient parts, waste of materials, cost increase, etc., and solve the problem of serious remelting and collapse. The effect of reducing heat accumulation
Active Publication Date: 2021-06-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
However, the current wings are all made of a high-standard aluminum alloy material, which will undoubtedly result in a waste of materials and an increase in cost.
However, the current traditional processing methods cannot process gradient parts made of various aluminum alloy materials.
Method used
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Embodiment 1
[0045] The lower layer is 2024 aluminum alloy, and the upper layer is 7055 aluminum alloy block as the target aluminum alloy gradient structure. figure 1 The device shown was prepared as follows:
[0046] Construct a three-dimensional solid model through solidworks software, and then use 3D data processing software for slice processing, with a layer height of 2.8mm, then generate a processing program, and import the processing program into the control system;
[0047] The 2024 aluminum alloy wire with a diameter of 1.2mm and the 7055 aluminum alloy wire with a diameter of 1.2mm are respectively sent to two wire feeders through the straightener, and the two wires are sent to the bottom of the welding torch. The copper conductive slider connected to the positive pole of a hot wire power supply is fixed on the 2024 aluminum alloy wire, and the fixed point is 10cm away from the melting end of the 2024 aluminum alloy wire. The conductive slider is fixed on the 7055 aluminum alloy ...
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Abstract
The invention provides an arc additive manufacturing method for an aluminum alloy gradient structure, and belongs to the technical field of preparation of an aluminum alloy gradient structure. The invention adopts the arc additive manufacturing technology to prepare aluminum alloy gradient structural parts, and the pulse in the arc additive manufacturing process can reduce the residual stress in the structural parts; Return to the origin, start the arc again, and feed the wire for arc additive manufacturing, which avoids the continuous stacking of the molten pool twice in a short period of time, reduces the heat accumulation in a disguised form, and thus solves the serious problem of remelting and collapse of aluminum alloy structural parts, and obtains The aluminum alloy gradient structural parts with high forming precision are obtained, which fills the blank in the field of preparation of aluminum alloy gradient structural parts.
Description
technical field [0001] The invention relates to the technical field of preparation of aluminum alloy gradient structural parts, in particular to an arc additive manufacturing method of aluminum alloy gradient structural parts. Background technique [0002] For machines working in some specific environments, due to the different environmental conditions in different parts, even adjacent parts have different physical property requirements. The air flow rate must be greater than the air flow rate below, which makes the strength requirements above it higher than the strength requirements of the lower skin. And the current wing is all made of a high-standard aluminum alloy material, which will undoubtedly cause waste of materials and increase of cost. However, the current traditional processing methods cannot process gradient parts made of various aluminum alloy materials. Contents of the invention [0003] The purpose of the present invention is to provide an arc additive ma...
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IPC IPC(8): B23K9/04B23K9/16B33Y10/00
CPCB23K9/04B23K9/16B33Y10/00B23K2103/10
Inventor 刘长猛高迪符瑞陈倬韩骁
Owner BEIJING INSTITUTE OF TECHNOLOGYGY