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Wire-powder-gas-arc coaxial 3D printing device

A 3D printing, coaxial technology, applied in the direction of arc welding equipment, welding media, welding/welding/cutting items, etc., can solve the problem that the product composition cannot be designed, and achieve the goal of improving printing efficiency, reducing losses, and saving preprocessing time Effect

Active Publication Date: 2016-06-01
JIANGSU SHUOSHI WELDING SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Arc additive manufacturing is realized through a single wire feeding method, and the composition of the products produced is limited by the composition of the wire, that is, the product composition cannot be designed

Method used

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  • Wire-powder-gas-arc coaxial 3D printing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Using the above-mentioned device, the method of 3D printing high-nitrogen steel products using nitrogen arc and nitride is used to prepare high-nitrogen steel components. Its size is 100mm×100mm×40mm, composed of 20 surfacing layers, each layer is 2mm high, and each layer is welded. The seam consists of 7 welds.

[0062] Table 1 The chemical composition requirements of target high nitrogen steel (%)

[0063] chemical composition

N

Mn

Cr

Mo

Si

C

Fe

Standard Specification

0.8-2.4

12-18

18-23

1.0-2.5

≤1

≤0.1

Margin

[0064] Table 2H08Mn2SiA welding wire chemical composition (%)

[0065]

[0066] A nitrogen arc wire feeding additive manufacturing method is used to carry out the surfacing forming of the high nitrogen steel of the set layer, and at the same time the nitrogen powder feeding is used to add nitride alloy powder to the molten pool. By controlling the parameter matching of 3D printing, high nitrogen steel printing layers with different nitrogen content can ...

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Abstract

The invention relates to a wire-powder-gas-arc coaxial 3D printing device. The device comprises a gas shield welding gun and a coaxial gas-powder conveying device; and the gas shield welding gun is a consumable electrode. The coaxial gas-powder conveying device includes a powder feeding device, a gas feeding device and a coaxial spiral gas-powder cover. The coaxial gas-powder conveying device is a multi-channel structure; and each channel is provided with a powder feeding speed adjuster and a gas feeding flow meter. A spiral gas-powder groove is bored in the inner wall of the coaxial spiral gas-powder cover, and can be a spiral variable-pitch variable-section variable-multi-spiral structure. The device is used for performing 3D printing, can realize real-time control of powder adding speed, and is suitable for added material manufacturing of conventional metal products, gradient materials and composite materials; and obtained products are uniform in component, short in processing and low in subsequent processing amount.

Description

Technical field [0001] The invention belongs to the technical field of electric arc processing, in particular to a wire-powder-gas-arc coaxial 3D printing device and method thereof, which can realize the wire-powder-gas-arc coaxial addition function, and is suitable for welding and welding metal materials. Surface modification, repair, additive manufacturing, etc. Background technique [0002] Electric arc wire feeding additive manufacturing technology (Wire+ArcAdditiveManufacture-WAAM) is a process that uses the principle of arc surfacing to melt metal wires and directly manufacture full-density three-dimensional metal parts under the control of a computer. Compared with traditional methods such as casting technology and machining methods, arc wire feeding additive manufacturing technology has simplified procedures, improved material utilization, reduced production costs, and lower machining difficulties. At the same time, it can control macroscopic defects and component segrega...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B23K9/173B22F3/105B33Y30/00B33Y40/00B23K35/24B23K103/04
CPCB22F3/005B22F3/105B22F2302/20B23K9/04B23K9/173B23K35/0244B23K35/24B23K2103/04
Inventor 周琦孔见王克鸿周春东朱军彭勇孙宏宇蔡雅君
Owner JIANGSU SHUOSHI WELDING SCI & TECH
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