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Flux-cored welding wire for laser cladding of continuous casting rolls and production method thereof

A technology of flux-cored welding wire and laser cladding, which is applied in the direction of welding equipment, welding medium, welding/cutting medium/material, etc., can solve the problems that cannot meet the requirements of laser cladding process operation, and achieve enhanced toughness, low melting point, The effect of less mold flux

Active Publication Date: 2021-06-04
北京奥邦新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Laser cladding requires the use of specific flux-cored wires for melting and filling. Currently, the widely used laser cladding materials mainly include: nickel-based, cobalt-based, iron-based alloys, tungsten carbide composite materials, ceramics and other materials. Core welding wire cannot meet the requirements of laser cladding process operation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A flux-cored welding wire for laser cladding of continuous casting rolls, the flux-cored welding wire includes a flux-core material and a flux-core wrapping material, and the flux-core material is composed of chromium carbide powder, carbon powder, chromium powder, silicon powder, boron Powder and iron powder are mixed, and the core wrapping material is made of nickel strip or steel strip.

[0031] The following ingredients are calculated by mass. In the flux cored wire, the content of chromium carbide powder is 5% to 10%, the content of carbon powder is 0.3% to 0.6%, the content of chromium powder is 11% to 15%, and the content of silicon powder The content of boron powder is 3% to 4.5%, the content of boron powder is 2% to 3%, the content of iron powder is 0% to 5%, the content of nickel strip is 60% to 70%, and the powdered drug core material is mixed uniform, and wrap the core material with the nickel tape.

[0032] The flux-cored wire also includes cobalt powder, ...

Embodiment 2

[0048] The following ingredients are all by mass. In the flux cored wire, the content of chromium carbide powder is 10%, the content of carbon powder is 0.4%, the content of chromium powder is 14%, the content of silicon powder is 4%, and the content of boron powder The content of iron powder is 3%, the content of iron powder is 2.6%, the content of cobalt powder is 1%, and the content of nickel strip is 65%. Mix the powdery core material evenly, and use the nickel strip to wrap the core material pack. In this embodiment, only the specific content of the flux-cored wire components is limited, and everything else is the same as in Embodiment 1.

Embodiment 3

[0050] The following ingredients are all by mass. In the flux cored wire, the content of chromium carbide powder is 7%, the content of carbon powder is 0.4%, the content of chromium powder is 14%, the content of silicon powder is 3.6%, and the content of boron powder The content of iron powder is 3%, the content of iron powder is 5%, the content of cobalt powder is 2%, and the content of nickel strip is 65%. Mix the powdery core material evenly, and use the nickel strip to wrap the core material pack. In this embodiment, only the specific content of the flux-cored wire components is limited, and everything else is the same as in Embodiment 1.

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Abstract

The invention belongs to the technical field of metal surface welding processing materials, and in particular relates to a flux-cored welding wire for laser cladding of continuous casting rolls and a production method thereof. The flux-cored welding wire includes a flux-cored material and a flux-cored wrapping material. The core material is made by mixing chromium carbide powder, carbon powder, chromium powder, silicon powder, boron powder, and iron powder. The core wrapping material is made of nickel strip or steel strip. The production method includes: Step 1: Strip material preparation; Step 2: Mix the flux core material evenly; Step 3: Roll the steel strip into welding wire; Step 4: Pull the welding wire; Step 5: Heat treatment; Step 6: Fill the welding wire into barrels. The flux-cored welding wire added with chromium carbide and cobalt in the present invention is used for laser cladding on the surface of materials such as wear resistance, corrosion resistance, high temperature resistance and fatigue resistance. The welding wire has a low melting point and a small amount of mold slag. distribution, significantly improve the service life of the continuous casting roll and the surface structure of the continuous casting roll, and reduce the crack defects of the cladding layer, thereby reducing the production cost.

Description

technical field [0001] The invention belongs to the technical field of metal surface welding processing materials, and in particular relates to a flux-cored welding wire used for laser cladding of continuous casting rolls and a production method thereof. Background technique [0002] The continuous casting roll is the core component of the continuous casting machine equipment in the steelmaking plant. In service, the continuous casting roll is subjected to the cyclic load exerted by the bulging force and static pressure when the high-temperature billet solidifies, as well as the influence of spraying protective water and acidic protective slag. Continuous casting After the roller is used for a period of time, defects such as high-temperature oxidation, electrochemical corrosion, bending deformation, network cracks, and wear will appear, which directly affect the operating efficiency, production cost, and quality of the casting slab of the continuous casting machine equipment,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/02B23K35/30B23K35/40
CPCB23K35/0266B23K35/304B23K35/40
Inventor 王存赵晓杰
Owner 北京奥邦新材料有限公司
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