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Powder core welding wire for self-protecting electric-arc welding additive manufacturing of austenitic stainless steel

An austenitic stainless steel, additive manufacturing technology, applied in the direction of manufacturing tools, welding/cutting media/materials, welding media, etc., can solve the problem of inability to achieve fine grains of metal structure, achieve good toughness and plasticity, reduce Inclusion and grain refinement effect

Inactive Publication Date: 2019-09-20
新乡市和光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, they all control the metal structure after the solidification of the metal, and cannot realize the refinement of the grains of the metal structure during the solidification process.

Method used

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  • Powder core welding wire for self-protecting electric-arc welding additive manufacturing of austenitic stainless steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Production of welding wire

[0034] The austenitic stainless steel self-shielded arc welding powder-cored welding wire for additive manufacturing in this embodiment includes a stainless steel sheath and a powder core, and the sheath and powder core contain the following components relative to the total mass fraction of the welding wire:

[0035] C:0.001%, Si:0.01%, Mn:6.0%, Cr:27.0%, Ni:1.0%, Mo:3.0%, Al:2%, Mg:2%, Ti:0.5%, LiBaF 3 : 5%, BaF 2 : 2%, rare earth oxide Ce 2 o 3 : 0.001%, LiFeO 2 : 1%, Zr: 0.1%, P: 0.03%, S: 0.01%, 0.25% of Ce and 0.25% of La.

[0036] Among the elements in the powder core, graphite is used for carbon, ferrosilicon is used for silicon, ferromanganese is used for manganese, metal chromium powder is used for chromium, metal nickel powder is used for nickel, metal molybdenum powder is used for molybdenum, aluminum powder is used for aluminum, and metal powder is used for magnesium. Magnesium powder, titanium metal titanium powder, zirc...

Embodiment 2

[0045] The austenitic stainless steel self-shielded arc welding powder-cored welding wire for additive manufacturing in this embodiment includes a stainless steel sheath and a powder core, and the sheath and powder core contain the following components relative to the total mass fraction of the welding wire:

[0046] C:0.1%, Si:0.05%, Mn:2.0%, Cr:17.0%, Ni:5.0%, Mo:1.0%, Al:3%, Mg:1%, Ti:0.001%, LiBaF 3 : 10%, BaF 2 : 5%, rare earth oxide Ce 2 o 3 : 0.35%, LiFeO 2 : 2%, Zr: 2%, P: 0.02%, S: 0.01%, 0.01% Ce and 0.5% La.

[0047] Among the elements in the powder core, graphite is used for carbon, ferrosilicon is used for silicon, ferromanganese is used for manganese, metal chromium powder is used for chromium, metal nickel powder is used for nickel, metal molybdenum powder is used for molybdenum, aluminum powder is used for aluminum, and metal powder is used for magnesium. Magnesium powder, titanium metal titanium powder, zirconium iron zirconium, Ce and La use La-Ce alloy p...

Embodiment 3

[0050] The austenitic stainless steel self-shielded arc welding powder-cored welding wire for additive manufacturing in this embodiment includes a stainless steel sheath and a powder core, and the sheath and powder core contain the following components relative to the total mass fraction of the welding wire:

[0051] C:0.05, Si:1.0%, Mn:3.0%, Cr:20.0%, Ni:10.0%, Mo:0.1%, Al:2.5%, Mg:1.5%, Ti:0.05%, LiBaF 3 : 15%, BaF 2 : 3%, rare earth oxide La 2 o 3 : 0.001%, LiFeO 2 : 1%, Zr: 0.5%, P: 0.03%, S: 0.01%, 0.6% of Ce and 0.01% of La.

[0052] Among the elements in the powder core, graphite is used for carbon, ferrosilicon is used for silicon, ferromanganese is used for manganese, metal chromium powder is used for chromium, metal nickel powder is used for nickel, metal molybdenum powder is used for molybdenum, aluminum powder is used for aluminum, and metal powder is used for magnesium. Magnesium powder, titanium metal titanium powder, zirconium iron zirconium, Ce and La use L...

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Abstract

The invention discloses a powder core welding wire for self-protecting electric-arc welding additive manufacturing of austenitic stainless steel. The powder core welding wire comprises a stainless steel coating and a powder core, wherein the coating and the powder core comprise the following components in percentage by mass relative to the total mass percentage of the welding wire: 0.001-0.1% of C, 0.01-1.0% of Si, 2.0-6.0% of Mn, 17.0-27.0% of Cr, 1.0-10.0%of Ni, 0.1-3.0% of Mo, 2-3% of Al, 1-2% of Mg, 0.001-0.5% of Ti, 5-15%of LiBaFe, 2-5% of BaF2, 0.001-0.35% of rare rearth oxide, 1-2% of LiFeO2, 0.1-2% of Zr, not greater than 0.03% of P, not greater than 0.01% of S, and 0.5-1% of rare earth metal, wherein the rare earth metal is a mixture of Ce and La. With the adoption of the powder core welding wire for the self-protecting electric-arc welding additive manufacturing of the austenitic stainless steel, self-protection in welding is realized; in addition, all components of the powder core welding wire are synergistically acted to refine crystal grains while solidifying additive materials, and thus a cladding metal with high toughness and plasticity can be obtained.

Description

technical field [0001] The invention relates to a powder-cored welding wire for additive manufacturing, in particular to a powder-cored welding wire for austenitic stainless steel self-shielded arc welding additive manufacturing. Background technique [0002] Compared with traditional forming manufacturing methods, additive manufacturing technology is more feasible and economical to process austenitic stainless steel parts. Different from the traditional subtractive manufacturing technology, the additive manufacturing technology can complete the shape of the part by depositing the molten filling material layer by layer according to the electronic drawing model. Therefore, the arc additive manufacturing of austenitic stainless steel has a good application prospect. Compared with powder-feeding additive manufacturing technology, the material utilization rate of wire-feeding additive manufacturing technology can reach 100%, and the additive efficiency rate is much higher than ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/02B23K35/22
CPCB23K35/0266B23K35/22
Inventor 张晓郝毓涛赵慧慧尹玉环
Owner 新乡市和光科技有限公司
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