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Flux-cored wire for stainless steel welding

A technology of flux-cored welding wire and stainless steel, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., and can solve problems such as low deposition efficiency, high requirements for welding equipment, and inconvenient construction and operation on site

Active Publication Date: 2014-01-22
BEIJING JINWEI WELDING MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the welding materials used in domestic reduction tanks for smelting metal magnesium are mainly submerged arc welding wires and electrodes, but they have the disadvantages of low deposition efficiency, high requirements for welding equipment, and inconvenient on-site construction and operation.

Method used

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  • Flux-cored wire for stainless steel welding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Embodiment 1: Preparation of flux-cored welding wire of the present invention

[0066] The drug core powder is filled in the stainless steel strip (304L stainless steel) with a filling rate of 18%, and the contained drug core mass percentage composition is as follows:

[0067] 32% metal chromium powder, 8% metal nickel powder, 6% metal manganese powder, 25% rutile, 4% ferrosilicon, 5% ferrosilicon, 6% feldspar, 7% quartz, 3 % of rare earth fluoride, 1% of metal nickel nitride powder, and the rest is iron powder so that it can be added to 100%.

[0068] Flux-cored welding wire is obtained by rolling and drawing. The flux-cored wire uses a variety of shielding gases (100% CO 2 Gas, 80%Ar+20%CO 2 Mixed gas, 100% Ar) were used to weld the magnesium smelting reduction tank respectively, and the chemical composition of the deposited metal after welding with the welding wire contained (%): C: 0.09, Mn: 1.86, Si: 0.70, S: 0.009, P : 0.025, Cr: 25.85, Ni: 7.55, N: 0.09, Mo...

Embodiment 2

[0069] Embodiment 2: Preparation of the flux-cored welding wire of the present invention

[0070] The drug core powder is filled in the stainless steel strip (304L stainless steel) with a filling rate of 20%, and the contained drug core mass percentage composition is as follows:

[0071] 36% metallic chromium powder, 8% metallic nickel powder, 5% metallic manganese powder, 25% rutile, 2% ferrosilicon, 4% ferrotitanium, 6% feldspar, 6% quartz, 3 % of rare earth fluoride, 2% of metal chromium nitride powder, and the rest is iron powder so that it can be added to 100%.

[0072] Flux-cored welding wire is obtained by rolling and drawing. The flux-cored wire uses a variety of shielding gases (100% CO 2 Gas, 80%Ar+20%CO 2 Mixed gas, 100% Ar) were used to weld the magnesium smelting reduction tank respectively, and the chemical composition of the deposited metal after welding with the welding wire contained (%): C: 0.093, Mn: 1.93, Si: 0.62, S: 0.007, P : 0.023, Cr: 26.23, Ni: ...

Embodiment 3

[0073] Embodiment 3: Preparation of flux-cored welding wire of the present invention

[0074] The drug core powder is filled in the stainless steel strip (304L stainless steel) with a filling rate of 19%, and the contained drug core mass percentage composition is as follows:

[0075] 35% metal chromium powder, 8% metal nickel powder, 5% metal manganese powder, 30% rutile, 3% ferrosilicon,

[0076] 4% ferro-titanium, 7% feldspar, 6% quartz, 1% rare earth fluoride, 1% chromium nitride metal powder.

[0077] Flux-cored welding wire is obtained by rolling and drawing. The flux-cored wire uses a variety of shielding gases (100% CO 2 Gas, 80%Ar+20%CO 2 Mixed gas, 100% Ar) were used to weld the magnesium smelting reduction tank respectively, and the chemical composition of the deposited metal after welding with the welding wire contained (%): C: 0.09, Mn: 1.90, Si: 0.67, S: 0.006, P : 0.020, Cr: 26.31, Ni: 7.58, N: 0.086, Mo: 0.07, Cu: 0.08, and the balance of Fe and optional u...

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Abstract

The invention relates to a flux-cored wire for stainless steel welding, and particularly discloses the flux-cored wire for stainless steel welding. The flux-cored wire is composed of flux-cored powder and a stainless steel belt, wherein the flux-cored powder is wrapped by the stainless steel belt. The flux-cored wire for stainless steel welding is characterized in that the flux-cored powder accounts for15-25% of the total weight of the flux-cored wire, the flux-cored powder comprises, by weight, 30-38 parts of metal chromium powder, 6-15 parts of metal nickel powder, 3-10 parts of metal manganese powder, 20-35 parts of rutile, 1-6 parts of silicon iron, 1-7 parts of ferrotitanium, 2-10 parts of feldspar, 5-10 parts of quartz, 1-5 parts of rare earth fluoride, 1-5 parts of metal nitride powder and appropriate iron powder, and the total flux-cored powder is, by weight, 100 parts. A reduction jar of the flux-cored wire for welding is long in service cycle, and deposited metal formed by the flux-cored wire has the excellent effects of high temperature oxidation resistant capacity and high temperature sulphur corrosion resistant capacity.

Description

technical field [0001] The invention belongs to the field of welding materials, and in particular relates to a flux-cored welding wire suitable for special stainless steel welding, in particular a welding material suitable for stainless steel special for reduction tanks used in the magnesium smelting industry. Background technique [0002] Magnesium is the lowest density of all structural metals and alloys. Compared with other metal structural materials, magnesium and magnesium alloys have a series of advantages such as high specific strength, good specific stiffness, vibration damping, electromagnetic shielding and radiation resistance, thermal conductivity, easy cutting, easy recycling, etc. It has extremely important application value and broad application prospects in the fields of industry, electronics, transportation, aerospace, and national defense. It is the third type of metal structural material developed after steel and aluminum alloys, and is called the 21st cent...

Claims

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Application Information

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IPC IPC(8): B23K35/362B23K35/40
CPCB23K35/306B23K35/368B23K35/406
Inventor 崔晓东李伟董海青李柱王学东王磊董阳阳
Owner BEIJING JINWEI WELDING MATERIAL
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