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Low-cost hard-face build-up welding flux-cored wire with high adaptability

An adaptable and low-cost technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of restricting the development of flux-cored welding wire for hard surface surfacing, uneven hardness of surfacing layer, and poor wear resistance. Good and other problems, to achieve the effect of excellent performance, excellent process performance and cost reduction

Active Publication Date: 2015-12-02
ATLANTIC CHINA WELDING CONSUMABLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The hardness of the surfacing layer is uneven and unstable;
[0004] 2. Cracks appear;
[0005] 3. Poor wear resistance and high cost
[0006] The above problems all restrict the development of hardfacing flux cored wire

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: A low-cost and adaptable flux-cored welding wire for hardfacing, including using a carbon steel strip as the sheath and filling the alloy powder as the flux core, and the components in the sheath are calculated by mass percentage (chemical composition) as : C: 0.01-0.08%; Mn: 0.1-0.4%; Si: 0.01-0.03%; S: 0.005-0.015%; P: 0.005-0.015%; the balance is iron. Low carbon steel 0.6×16mm thin strip is used as the metal sheath of the welding wire. The components in the drug core are calculated in terms of the total weight percentage of the filled drug powder: 4% high-carbon ferromanganese, 6% low-carbon ferromanganese, 8% high-carbon ferro-aluminium, 30% micro-carbon ferro-ferro, 5% ferro-vanadium, titanium Iron 5%, the rest is Fe. After surfacing welding with this welding wire, the post-welding inspection is carried out, and the surface has no cracks, and the average hardness is HRC50-52.

Embodiment 2

[0028] Embodiment 2: A low-cost and adaptable hardfacing flux-cored welding wire, including using a carbon steel strip as the sheath and filling the alloy powder as the flux core, and the components in the sheath are calculated by mass percentage (chemical composition) as : C: 0.01-0.08%; Mn: 0.1-0.4%; Si: 0.01-0.03%; S: 0.005-0.015%; P: 0.005-0.015%; the balance is iron. Low carbon steel 0.6×16mm thin strip is used as the metal sheath of the welding wire. The components in the drug core are calculated in terms of the total weight percentage of the filled drug powder: 6% high-carbon ferromanganese, 7% low-carbon ferromanganese, 10% high-carbon aluminum iron, 40% micro-carbon ferrochrome, 5% nickel powder, titanium 5% iron, 5% tungsten powder, and the rest is Fe. After surfacing welding with this welding wire, the post-welding inspection is carried out, and the surface has no cracks, and the average hardness is HRC52-54.

Embodiment 3

[0029] Example 3: A low-cost and adaptable flux-cored welding wire for hardfacing, including using a carbon steel strip as the sheath and filling the alloy powder as the flux core, and the components in the sheath are calculated by mass percentage (chemical composition) as : C: 0.01-0.08%; Mn: 0.1-0.4%; Si: 0.01-0.03%; S: 0.005-0.015%; P: 0.005-0.015%; the balance is iron. Low carbon steel 0.6×16mm thin strip is used as the metal sheath of the welding wire. The components in the drug core are calculated in terms of the total weight percentage of the filled drug powder: 8% high-carbon ferromanganese, 4% low-carbon ferromanganese, 13% high-carbon ferro-aluminum, 25% micro-carbon ferro-ferro, 5% ferro-vanadium, titanium Iron 15%, the rest is Fe. After surfacing welding with this welding wire, the post-welding inspection is carried out, and the surface has no cracks, and the average hardness is HRC50-52.

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Abstract

The invention discloses a low-cost hard-face build-up welding flux-cored wire with high adaptability and relates to the technical field of welding. The low-cost hard-face build-up welding flux-cored wire with high adaptability is composed of a flux core and a low-carbon steel sheath, wherein the flux core is composed of 4-10% of high-carbon ferromanganese, 3-7% of low-carbon ferromanganese, 5-15% of high-carbon ferro-aluminum, 20-40% of micro-carbon ferro chrome, 10-30% of other alloy and the balance iron, and the low-carbon steel sheath comprises, by weight, 0.01-0.10% of C, 0.1-0.4% of Mn, 0.01-0.03% of Si, 0.005-0.010% of S, and 0.005-0.015% of P. By the adoption of the low-cost hard-face build-up welding flux-cored wire with high adaptability, cost can be effectively reduced, and abrasion resistance is guaranteed. The low-cost hard-face build-up welding flux-cored wire with high adaptability has the advantages of being excellent in processing property and physical and chemical property, high in adaptability, free of cracks and the like. The harness of the low-cost hard-face build-up welding flux-cored wire is over HRC50.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a flux-cored welding wire for hard surface overlay welding with low cost and strong adaptability. Background technique [0002] At present, the rolls used in the domestic iron and steel industry will be repaired accordingly according to their use and failure conditions, and the effect of sustainable use has been achieved. It is currently the most economical and practical repair method after planing, surfacing, heat treatment, and processing into the corresponding size before use. In surfacing welding, submerged arc welding wire or special flux cored welding wire and flux for hard surface surfacing are mostly used. However, this surfacing method will cause the following problems: [0003] 1. The hardness of the surfacing layer is uneven and unstable; [0004] 2. Cracks appear; [0005] 3. The wear resistance is not good and the cost is high. [0006] The above problems all r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/24B23K35/30
CPCB23K35/24B23K35/3053
Inventor 邹杨李昊
Owner ATLANTIC CHINA WELDING CONSUMABLES
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