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Grinder roll overlaying dreg-free self-protection flux-cored wire

A technology of flux-cored welding wire and self-protection, which is applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of low production efficiency, complicated surfacing welding process, high labor intensity, etc., and achieve high welding efficiency, Enhanced surfacing alloy, good matching effect

Inactive Publication Date: 2015-12-09
HEFEI KEDE SURFACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, large-area wear-resistant surfacing welding has problems such as low production efficiency, complicated surfacing welding process, high labor intensity, high cost, and low performance of the surfacing layer. Welding material with simple process and high surfacing efficiency

Method used

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  • Grinder roll overlaying dreg-free self-protection flux-cored wire
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  • Grinder roll overlaying dreg-free self-protection flux-cored wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A slag-free self-shielding flux-cored welding wire for roller surfacing, including a sheath and a powder core, the sheath is made of H08A material, and the powder core includes the following components: high-carbon ferrochrome, titanium ferro, vanadium ferro, phosphorus ferro, Ferromanganese, ferrosilicon, graphite, aluminum powder and iron powder.

[0032] The filling rate of the powder core in the flux cored wire is 40%. The outer diameter of the flux-cored wire is 2.8 mm, and the thickness of the steel strip used to make the sheath is 0.4 mm.

[0033] The mass percent content of each component in the powder core is:

[0034]

[0035] Carbon (C), chromium (Cr), titanium (Ti), manganese (Mn), silicon (Si), vanadium ( V), phosphorus (P), nitrogen (N) and other elements.

[0036] Carbon (C) is a very important element in wear-resistant surfacing materials. It can be seen from the above that, on the one hand, carbon can react with alloying elements to form carbide h...

Embodiment 2

[0050] A slag-free self-shielding flux-cored welding wire for roller surfacing, including a sheath and a powder core, the sheath is made of H08A material, and the powder core includes the following components: high-carbon ferrochrome, titanium ferro, vanadium ferro, phosphorus ferro, Ferromanganese, ferrosilicon, graphite, aluminum powder and iron powder.

[0051] The filling rate of the powder core in the flux cored wire is 40%. The outer diameter of the flux-cored wire is 2.8 mm, and the thickness of the steel strip used to make the sheath is 0.4 mm.

[0052] The mass percent content of each component in the powder core is:

[0053]

[0054]

[0055] All the other are with embodiment 1.

Embodiment 3

[0057] A slag-free self-shielding flux-cored welding wire for roller surfacing, including a sheath and a powder core, the sheath is made of H08A material, and the powder core includes the following components: high-carbon ferrochrome, titanium ferro, vanadium ferro, phosphorus ferro, Ferromanganese, ferrosilicon, graphite, aluminum powder and iron powder.

[0058] The filling rate of the powder core in the flux cored wire is 40%. The outer diameter of the flux-cored wire is 2.8 mm, and the thickness of the steel strip used to make the sheath is 0.4 mm.

[0059] The mass percent content of each component in the powder core is:

[0060]

[0061] All the other are with embodiment 1.

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Abstract

The invention discloses a grinder roll overlaying dreg-free self-protection flux-cored wire which comprises a husk and a powder core and is characterized in that the husk is made of an H08A material. The powder core is made by adopting high carbon ferro-chrome, ferrotitanium, ferrovanadium, ferrophosphorus, ferromanganese, ferrosilicon, graphite, aluminium powder and iron powder. Compared with the prior art, the wire has the following advantages that an alloy system obtained according to the invention is Fe-Cr-C-Ti-V-P, and by adding other trace alloying elements and controlling the content of the trace alloying elements, the performance of flux-cored wire is further optimized and improved; an overlaying cladding with good formability can be obtained by adopting an air arc overlaying process, nearly no dregs exist on the surface, and the welding efficiency is high; the microhardness of a second layer of overlaying reaches about 5 times that of a base metal, the average macrohardness of the surface of the overlaying cladding reaches 61.1HRC, and thus the hardness requirement of wear-resistant overlaying alloy is reached.

Description

technical field [0001] The invention relates to the technical field of wear repair, in particular to a slag-free self-protecting flux-cored welding wire for grinding roller surfacing. Background technique [0002] Wear is the process of surface damage and failure due to the relative movement of the frictional contact surface due to the action of contact stress. Usually, the geometric size (volume) of the worn parts becomes smaller. At present, for the problem of surface wear of parts, surface repair is mainly carried out by surfacing welding, which not only improves the service life of parts, but also significantly reduces the cost compared with replacing equipment. The so-called surfacing welding is welding to increase or restore the size of the weldment, or to obtain cladding metal with special properties on the surface of the weldment. With the continuous development and progress of science and technology, wear-resistant surfacing welding technology, as an effective meas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3053B23K35/0266B23K35/40
Inventor 王平牛晓鸣王国平
Owner HEFEI KEDE SURFACE TECH