Coaxial wire-powder-gas-electric arc 3D printing method

A 3D printing, coaxial technology, applied in the direction of improving process efficiency, improving energy efficiency, additive manufacturing, etc., can solve the problem of undesignable product components, achieve the effect of improving printing efficiency, saving preprocessing time, and reducing losses

Active Publication Date: 2016-07-20
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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  • Coaxial wire-powder-gas-electric arc 3D printing method
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  • Coaxial wire-powder-gas-electric arc 3D printing method

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Experimental program
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Effect test

Embodiment 1

[0060] Using the above device, high nitrogen steel components were prepared by using nitrogen arc and nitride 3D printing of high nitrogen steel products. Seam consists of 7 welds.

[0061] Table 1 Chemical Composition Requirements of Target High Nitrogen Steel (%)

[0062] 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

[0063] Table 2H08Mn2SiA welding wire chemical composition (%)

[0064]

[0065] Nitrogen arc wire-feeding additive manufacturing method is used for surfacing forming of nitrogen steel with set layer height, and nitrogen alloy powder is added to the molten pool by nitrogen gas powder feeding. By controlling the matching of 3D printing parameters, high nitrogen steel printing layers with different nitrogen contents can be obtained. When each layer of surfacing is completed, the welding torch is increased by one layer thi...

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Abstract

The invention relates to a coaxial wire-powder-gas-electric arc 3D printing method. The method is realized through a coaxial wire-powder-gas-electric arc 3D printing device. The device comprises a gas shield welding gun and a coaxial gas powder conveying unit. The gas shield welding gun is a consumable electrode gas shield welding gun. The coaxial gas powder conveying unit comprises a powder feeding unit, a gas feeding unit and a coaxial spiral gas powder cover. The coaxial gas powder conveying unit is of a multi-channel structure, and channels are all provided with powder feeding speed controller and a gas feeding flowmeters. According to the 3D printing method using the device, the powder adding rate can be regulated and controlled in real time, the method is suitable for additive manufacturing of conventional metal products, functionally gradient materials and composites, obtained products are even in ingredient, product machining process is short, and subsequent machining amount is small.

Description

technical field [0001] The invention belongs to the technical field of arc processing, in particular to a wire-powder-gas-arc coaxial 3D printing device and its method, which can realize the function of wire-powder-gas-arc coaxial addition, and is suitable for welding, Surface modification, restoration, additive manufacturing, etc. Background technique [0002] Arc wire feeding additive manufacturing technology (Wire+ArcAdditiveManufacture-WAAM) is a process method that uses the principle of arc surfacing to melt metal wire 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 low machining difficulty. At the same time, it can control macroscopic defects and composition segregation in parts. The subsequent pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105
CPCB22F10/00B22F10/322B22F10/25B22F12/58B22F10/30B22F12/53Y02P10/25
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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