Welding wire powder, flux-cored wire and preparation and application

A technology of flux-cored welding wire and powder, applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problems of high sensitivity to thermal cracks, welding cracks, restricting the progress of engineering construction, etc., to achieve suitable strength, improve crack resistance, The effect of stable mechanical properties

Active Publication Date: 2018-09-04
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main technical problems of this type of welding wire are: the weld structure of E308LT1-1 stainless steel flux-cored welding wire is mainly austenite, and the sensitivity to hot cracks is relatively h

Method used

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  • Welding wire powder, flux-cored wire and preparation and application
  • Welding wire powder, flux-cored wire and preparation and application
  • Welding wire powder, flux-cored wire and preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0066] Example 1

[0067] A welding wire powder, which contains the following components by mass percentage:

[0068]

[0069] A flux-cored welding wire, comprising the above-mentioned welding wire powder and a sheath (stainless steel strip);

[0070] The preparation method of the flux-cored welding wire includes the following steps:

[0071] (1) Mix the components of the above-mentioned welding wire powder uniformly to obtain welding wire powder;

[0072] (2) The 304L stainless steel strip is wrapped with the powder obtained in step (1) through rolling and diameter reduction to obtain a flux-cored welding wire, wherein the filling rate of the powder is 25wt%, and the diameter of the flux-cored welding wire is 1.2mm.

Example Embodiment

[0073] Example 2

[0074] A welding wire powder, which contains the following components by mass percentage:

[0075]

[0076] A flux-cored welding wire, comprising the above-mentioned welding wire powder and a sheath (stainless steel strip);

[0077] The preparation method of the flux-cored welding wire includes the following steps:

[0078] (1) Mix the components of the above-mentioned welding wire powder uniformly to obtain welding wire powder;

[0079] (2) The 304L stainless steel strip is wrapped with the powder obtained in step (1) through rolling and diameter reduction to obtain a flux-cored welding wire, wherein the filling rate of the powder is 23.5wt%, and the diameter of the flux-cored welding wire is 1.2mm.

Example Embodiment

[0080] Example 3

[0081] A welding wire powder, which contains the following components by mass percentage:

[0082]

[0083]

[0084] A flux-cored welding wire, comprising the above-mentioned welding wire powder and a sheath (stainless steel strip);

[0085] The preparation method of the flux-cored welding wire includes the following steps:

[0086] (1) Mix the components of the above-mentioned welding wire powder uniformly to obtain welding wire powder;

[0087] (2) The 304L stainless steel strip is wrapped with the powder obtained in step (1) through rolling and diameter reduction to obtain a flux-cored welding wire, wherein the filling rate of the powder is 21wt%, and the diameter of the flux-cored welding wire is 1.2mm.

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Abstract

The invention belongs to the technical field of welding materials, and particularly relates to welding wire powder, flux-cored wire and preparation and application. The welding wire powder comprises,by mass, 15-18% of metal chromium, 3-5% of metal nickel, 6-8% of manganese metal, 0.6-1% of rare earth ferrosilicon, 2-4% of aluminum iron, 0.8%-1.5% of ferrotitanium, 25-28% of rutile, 1-2% of zirconsand, 6-9% of quartz, 3-5% of aluminum oxide, 3-5% of magnetite, 3-6% of potassium titanate, 1-2% of sodium fluoride, 3-4.5% of dehydrated potash feldspar, 0.15-0.3% of bismuth oxide, 0.5-1% of rareearth fluoride, and the balance iron powder. The invention further provides the flux-cored wire containing the powder. The flux-cored wire is good in welding process, small in splashing, good in spreading and fusing performance, stable in arc, easy to deslag, attractive in forming, and excellent in mechanical property.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a welding wire medicinal powder, a flux-cored welding wire and its preparation and application. Background technique [0002] Stainless steel flux-cored wire has the characteristics of excellent process performance, stable mechanical properties, high production efficiency and low overall cost, which has prompted the continuous increase in the proportion of flux-cored welding wire in welding materials in recent years, so the demand for stainless steel flux-cored wire continues to increase . [0003] E308LT1-1 stainless steel flux-cored wire is widely used in welding of structural parts and surfacing of corrosion-resistant layers in petrochemical, pressure vessel, shipbuilding, steel structure and engineering machinery and other fields. The main technical problems of this type of welding wire are: the weld structure of E308LT1-1 stainless steel flux-cored wel...

Claims

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Application Information

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IPC IPC(8): B23K35/02B23K35/24B23K35/40
CPCB23K35/0266B23K35/24B23K35/40
Inventor 叶凡亢天佑王青云
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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