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Nickel-based alloy flux-cored wire and preparation method thereof

A technology of flux-cored welding wire and nickel-based alloy, which is applied in the field of material processing, can solve the problems of hindering the expansion of the application of nickel-based nickel-based alloy flux-cored welding wire, poor welding quality, and easy occurrence of pores, so as to reduce the sensitivity of welding pores and reduce the welding porosity. Excellent craftsmanship and improved performance

Pending Publication Date: 2022-07-22
天津沃盾耐磨材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nickel and nickel alloy welding consumables are widely used in offshore drilling platforms, land-based or ship-based gas turbines, high-temperature combustion chambers of various aerospace and aviation engines, flue gas desulfurization equipment for nuclear power and thermal power plants, new exhaust systems for automobiles, Military weapons and equipment, petroleum refining and various chemical equipment, etc., are prone to pores in the welding process, and the welding quality is poor. Due to the large size of such equipment, it is difficult to replace, which leads to the further expansion of the application of nickel-based nickel-based alloy flux-cored welding wire There are obstacles

Method used

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  • Nickel-based alloy flux-cored wire and preparation method thereof
  • Nickel-based alloy flux-cored wire and preparation method thereof
  • Nickel-based alloy flux-cored wire and preparation method thereof

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preparation example Construction

[0061] The present application also provides a method for preparing a nickel-based alloy flux-cored welding wire, comprising the following steps:

[0062] Step S100, respectively weighing 38%-43% of metal chromium, 12%-18% of ferromolybdenum, 4%-7% of ferrotungsten, 15%-20% of metal cobalt, 10%-15% of ferrotitanium, 10%-15% of silicon 0.5% to 2% of iron, 0.3% to 0.7% of metal manganese, 2% to 4% of magnesium aluminum alloy and / or rare earth alloy, the balance is nickel powder, and the sum of the mass percentages of the above components is 100%. The taken materials are mixed evenly;

[0063] Step S200, rolling the outer sheath of the welding wire into a U-shaped groove, adding flux core powder to the U-shaped groove, controlling the filling rate of the flux core powder to 30% to 50%, rolling and closing the U-shaped groove, and It is drawn to 2.1 mm to 3 mm to obtain a nickel-based alloy flux-cored welding wire.

[0064] In some embodiments, the wire sheath includes any one o...

Embodiment 1

[0068] (1) Weigh 41% of chromium powder, 16% of ferromolybdenum powder, 5% of ferrotungsten powder, 18% of metallic cobalt, 13% of ferrotitanium powder, 1% of ferrosilicon powder by mass percentage (the content of silicon in ferrosilicon is 45%), metal manganese powder 0.5%, magnesium-aluminum alloy powder 3%, the balance is nickel powder, the sum of the mass percentages of the above components is 100%, and the above-mentioned materials are mixed uniformly.

[0069] (2) Rolling the nickel strip into a U-shaped groove, adding flux-cored powder to the U-shaped groove, rolling and closing the U-shaped groove, and drawing it to obtain a nickel-based alloy flux-cored welding wire.

Embodiment 2

[0071] (1) Weigh 38% of chromium powder, 14% of ferromolybdenum powder, 4% of ferrotungsten powder, 20% of metallic cobalt, 10% of ferrotitanium powder, and 1.5% of ferrosilicon powder by mass percentage (the content of silicon in ferrosilicon is 43%), 0.3% of manganese powder, 3% of magnesium-aluminum alloy powder, the balance of nickel powder, the sum of the mass percentages of the above components is 100%, and the above-mentioned materials are mixed uniformly.

[0072] (2) Rolling the nickel-molybdenum strip into a U-shaped groove, adding flux core powder to the U-shaped groove, rolling and closing the U-shaped groove, and drawing it to obtain a nickel-based alloy flux-cored welding wire.

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Abstract

The invention relates to a nickel-based alloy flux-cored wire and a preparation method thereof.The nickel-based alloy flux-cored wire comprises a flux core and a coating layer arranged on the surface of the flux core, and the flux core comprises, by mass, 38%-43% of metal chromium, 12%-18% of ferromolybdenum, 4%-7% of ferrotungsten, 15%-20% of metal cobalt, 10%-15% of ferrotitanium, 0.5%-2% of silicon iron and 0.3%-0.7% of metal manganese; 2-4% of magnesium-aluminum alloy and / or rare earth alloy, and the balance of nickel powder. After the nickel-based alloy flux-cored wire is welded, deposited metal of a welding seam has porosity resistance, the welding process is excellent, the formed welding seam is attractive, the sensitivity of welding pores can be effectively reduced, and the welding quality is improved. In addition, the nickel powder in the coating layer and the nickel powder in the nickel-based alloy flux-cored wire are made of the same metal, and the austenitizing process of the nickel-based alloy flux-cored wire can be accelerated.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a nickel-based alloy flux-cored welding wire and a preparation method thereof. Background technique [0002] The general recognition of the excellent performance of nickel-based corrosion-resistant alloys has led to the continuous expansion of its application fields. Years of research and application have shown that nickel-based alloys are the most suitable for various harsh environments (high temperature, high pressure, high chemical concentration). etched material. The harsh medium environment (coexistence of various properties of medium, high temperature and pressure, high radiation, etc.) under modern industrial technology requires corrosion-resistant alloys to have greater versatility. Nickel and nickel alloy welding consumables are widely used in offshore drilling platforms, land-based or ship-based gas turbines, high-temperature combustion chambers...

Claims

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Application Information

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IPC IPC(8): B23K35/02B23K35/32B23K35/40B23K103/18
CPCB23K35/0266B23K35/32B23K35/406B23K2103/26Y02P10/20
Inventor 郭娜赵有恒安静
Owner 天津沃盾耐磨材料有限公司
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