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A method for arc additive manufacturing of multi-material monolithic structural parts

A technology of integral structural parts and additive manufacturing, which is applied in the direction of manufacturing tools, additive processing, arc welding equipment, etc., can solve the problems of low forming efficiency, surface defects, poor forming accuracy of integral structural parts, etc., to meet the forming requirements, Effect of improving molding efficiency

Active Publication Date: 2021-06-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the arc additive manufacturing technology is usually a single-feed arc additive manufacturing technology, that is, one wire is used as a raw material for arc fuse each time. When it is used to prepare multi-material integral structural parts, it is necessary to replace the wire frequently so that the deposition cannot be achieved. Continuously, surface defects are prone to occur at the interface of heterogeneous materials, and the forming accuracy of the prepared overall structural parts is poor, and the forming efficiency is low, which is not suitable for industrial applications

Method used

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  • A method for arc additive manufacturing of multi-material monolithic structural parts
  • A method for arc additive manufacturing of multi-material monolithic structural parts
  • A method for arc additive manufacturing of multi-material monolithic structural parts

Examples

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Effect test

Embodiment 1

[0044] use figure 1 The device shown is used to prepare the breech breech barrel, in which the material of the cylindrical part (ie, the rigid connection part) is TA15 titanium alloy, and the material of the rocker arm part (ie, the loading area) is TC18 titanium alloy. The specific steps are as follows:

[0045]Build a three-dimensional solid model through solidworks software, then use 3D data processing software for slicing processing, then generate a processing program, and import the processing program into the control system; install two TC18 titanium alloy wires with a diameter of 1.6mm on the 1# wire feeder and 2# wire feeder, install two TA15 titanium alloy wires with a diameter of 1.6mm on 3# wire feeder and 4# wire feeder, and install the hot wire power supplies numbered Ⅰ, Ⅱ, Ⅲ, and Ⅳ The positive pole is connected to the wire on 1# wire feeder, 2# wire feeder, 3# wire feeder and 4# wire feeder in turn through copper wire feeder tube, the distance between the connec...

Embodiment 2

[0055] use figure 1 The shown device prepares TC4-TC11 titanium alloy thin-walled devices, wherein the lower layer is made of TC4 titanium alloy with a height of 25 mm, and the upper layer is made of TC11 titanium alloy with a height of 45 mm. The specific steps are as follows:

[0056] Build a 3D solid model through solidworks software (such as image 3 shown), and then use 3D data processing software for slicing processing, the layer height is 2.5mm, then generate a processing program, and import the processing program into the control system;

[0057] Install two TC4 titanium alloy wires with a diameter of 1.6mm on 1# wire feeder and 2# wire feeder, install two TC11 titanium alloy wires with a diameter of 1.6mm on 3# wire feeder and 4# On the wire feeder, pass the positive poles of the hot wire power supplies numbered Ⅰ, Ⅱ, Ⅲ, and Ⅳ through the wires on 1# wire feeder, 2# wire feeder, 3# wire feeder and 4# wire feeder in turn. The copper wire feeding tube is connected, th...

Embodiment 3

[0061] use figure 1 The device shown prepares TC4-TC11 titanium alloy gradient block, wherein the lower layer is made of TC4 titanium alloy with a height of 35 mm, and the upper layer is made of TC11 titanium alloy with a height of 35 mm. The specific steps are as follows:

[0062] Build a 3D solid model through solidworks software (such as Figure 5 shown), and then use 3D data processing software for slicing processing, the layer height is 3.5mm, then generate a processing program, and import the processing program into the control system;

[0063] Install two TC4 titanium alloy wires with a diameter of 1.6mm on 1# wire feeder and 2# wire feeder, install two TC11 titanium alloy wires with a diameter of 1.6mm on 3# wire feeder and 4# On the wire feeder, pass the positive poles of the hot wire power supplies numbered Ⅰ, Ⅱ, Ⅲ, and Ⅳ through the wires on 1# wire feeder, 2# wire feeder, 3# wire feeder and 4# wire feeder in turn. The copper wire feeding tube is connected, the di...

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Abstract

The invention provides an arc additive manufacturing method for a multi-material integral structural part, belonging to the technical field of preparation of a multi-material integral structural part. The arc additive manufacturing method of multi-material integral structural parts provided by the present invention comprises the following steps: constructing a three-dimensional solid model of the target structural part, then slicing, generating a processing program, and importing it into a control system; using n sets of wire feeding The arc additive manufacturing equipment of the machine performs arc additive manufacturing according to the processing procedure to obtain a multi-material integral structure; wherein n is an integer greater than or equal to 2; during the arc additive manufacturing process, the n sets of wire feeders Divided into m groups, m is an integer greater than or equal to 2, each group feeds a kind of wire at the same time, m groups of wire feeders are used continuously and alternately, and the transfer mode of the droplet is a contact transfer mode. The method provided by the present invention has no obvious defects at the interface, and has the advantage of high forming efficiency.

Description

technical field [0001] The invention relates to the technical field of preparation of multi-material integral structural parts, in particular to an arc additive manufacturing method for multi-material integral structural parts. Background technique [0002] With the development of aerospace technology, the performance requirements of advanced aircraft for large and lightweight structural parts such as titanium alloys are also getting higher and higher. Due to the different service environments of different parts of the same structural part, the performance requirements of different parts are also different. For example, load-bearing structural parts such as aircraft frame beams, the upper part mainly bears high compressive stress, which requires high strength and rigidity of the material, while the lower part mainly bears high tensile stress, which requires the material to have excellent toughness, fatigue crack growth resistance and excellent performance. The damage tolera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/04B23K9/167B33Y10/00
CPCB23K9/04B23K9/167B33Y10/00B23K2103/14
Inventor 刘长猛王贺陈倬宋文强刘家伟
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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