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Flux-cored wire for high-temperature-resisting steel

A technology of high temperature resistance and drug use, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., and can solve the problems that the strength and toughness of flux cored wire cannot meet the requirements, etc.

Inactive Publication Date: 2019-05-07
江苏南通瑞舶莱焊业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in boiler, chemical and nuclear power industries, flux cored wires with good tensile strength and toughness under high temperature conditions are required for welding steel structures operating in high temperature environments. Generally, flux cored wires can only meet the fatigue resistance at room temperature. , but at high temperatures above 500 degrees, the strength and toughness of general flux-cored wires cannot meet the requirements

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment 1

[0013] High temperature resistant steel flux-cored welding wire, the mass percentage of powder components is: 2% zircon sand, 4% chromium powder, 2% molybdenum powder, 2% tungsten powder, 7% ferromanganese, 6% quartz, 4% Teflon, Bauxite 3%, silicon-manganese alloy 18%, aluminum-magnesium alloy 8%, magnesium powder 5%, rutile 26%, iron powder 5%, fluoride 3%, other alloy 5%.

Embodiment 2

[0015] High temperature resistant steel flux-cored welding wire, the mass percentage of powder components is: 8% zircon sand, 4% chromium powder, 3% molybdenum powder, 2% tungsten powder, 8% ferromanganese, 6% quartz, 2% Teflon, Bauxite 3%, silicon-manganese alloy 20%, aluminum-magnesium alloy 8%, magnesium powder 7%, rutile 20%, iron powder 5%, fluoride 2%, other alloy 2%.

[0016] The flux-cored welding wire includes a sheath and a flux core, and the sheath wraps the flux core; the purpose of the present invention is to develop the flux-core component of the flux-cored welding wire, so the present invention does not specifically limit the sheath.

[0017] In the present invention, the particle size of the alloy powder is over 60-80 mesh.

[0018] The flux-cored welding wire of the present invention, the post-weld heat treatment state: yield strength (Mpa) ≥ 470; tensile strength (Mpa) 550-690; elongation (%) ≥ 21. Chemical composition (w%): Cr, 1.10-1.50; Mo, 0.42-0.60.

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Abstract

The invention discloses a flux-cored wire for high-temperature-resisting steel. The powder of the flux-cored wire comprises, by mass, 1-8% of zircon sand, 1-6% of chromium powder, 0.3-5% of molybdenumpowder, 1-3% of tungsten powder, 2-10% of ferromanganese iron, 5-10% of quartz, 1-6% of Teflon, 2-4% of bauxite, 10-22% of a silicon and manganese alloy, 5-15% of an aluminum and magnesium alloy, 4-8% of magnesium powder, 10-28% of rutile, 3-10% of iron powder, 2-6% of fluoride, and 2-5% of other alloys, wherein the fluoride is potassium fluoride or sodium fluoride, and other alloys are any combination of bismuth, aluminum, vanadium, titanium, niobium and zirconium. The flux-cored wire for high-temperature-resisting steel can be used at the environment of 500 DEG C or above.

Description

technical field [0001] The invention belongs to the field of welding wire technology, and in particular relates to a flux-cored welding wire for high-temperature-resistant steel. Background technique [0002] At present, in boiler, chemical and nuclear power industries, flux cored wires with good tensile strength and toughness under high temperature conditions are required for welding steel structures operating in high temperature environments. Generally, flux cored wires can only meet the fatigue resistance at room temperature. , but at high temperatures above 500 degrees, the strength and toughness of general flux-cored wires cannot meet the requirements. Contents of the invention [0003] The object of the present invention is to provide a flux-cored welding wire for high temperature resistant steel to solve the above problems. [0004] The technical scheme of the present invention is: high temperature resistant steel flux-cored welding wire, the mass percentage of its...

Claims

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Application Information

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IPC IPC(8): B23K35/368B23K35/24
Inventor 陈迪汪春沿
Owner 江苏南通瑞舶莱焊业科技有限公司
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