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Flat round-corner-shaped bead welding rod having coatings with different thicknesses

A technology of surfacing electrodes and rounded corners, used in welding media, welding equipment, welding/cutting media/materials, etc., can solve the effect of surfacing electrode surfacing efficiency on surfacing wear resistance, and cannot manufacture large-sized thick coatings The thickness of the coating of the surfacing electrode and the flat electrode should not be too thick, so as to achieve the effect of no arcing phenomenon, solving the problem of surfacing efficiency and stable surfacing operation process.

Inactive Publication Date: 2013-06-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the existing problems in the prior art, that is, the thickness of the coating on both sides of the flat electrode should not be too thick, otherwise, the quality problems of the coating on both sides falling off and insufficient melting of the coating will occur during welding , so it is impossible to manufacture large-scale thick-coated surfacing electrodes, which will inevitably affect the further improvement of the surfacing welding efficiency of the surfacing electrodes and the improvement of the surfacing wear resistance.

Method used

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  • Flat round-corner-shaped bead welding rod having coatings with different thicknesses
  • Flat round-corner-shaped bead welding rod having coatings with different thicknesses
  • Flat round-corner-shaped bead welding rod having coatings with different thicknesses

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Embodiment 1: The flat fillet-shaped surfacing electrode with different thickness coatings used, the thickness H of the welding core 1 is 1.6mm, the radius R of the fillet 4 is 0.8mm, and the cross-sectional area of ​​the welding core is the same as that of a Φ3.2mm round rod-shaped welding rod. The cores are the same (the diameter of the welding core is Φ3.2mm, and the thickness of the coating is 1.4mm.), the thickness of the coating 2 outside the two flat surfaces 3 is 1.6mm, and the thickness of the coating 2 outside the two rounded corners 4 is 1.2mm. The round rod-shaped surfacing electrode can perform normal surfacing welding when the welding current is 130-150A, and the flat round-shaped surfacing electrode with different thickness coatings can produce beautiful welds under the condition of 80A welding current. When it is increased to 170A, a flat and smooth weld can also be surfacing, and the surfacing speed is 0.5 times that of the normal surfacing speed of the ...

Embodiment 2

[0030] Embodiment 2: as figure 2As shown, the round bar-shaped surfacing electrode used, the diameter of the welding core is Φ4.0mm, and the thickness of the coating is 1.8mm, which is a thick-coating surfacing electrode. Among them, the flat fillet-shaped surfacing electrode with different thickness coatings is used. The thickness H of the welding core 1 is 2mm, the radius R of the fillet 4 is 1mm, and the cross-sectional area of ​​the welding core is the same as that of the Φ4.0mm round rod-shaped welding core. The thickness of the coating 2 outside the surface 3 is 2.5mm, and the thickness of the coating 2 outside the two rounded corners 4 is 1.6mm. Since the flat shape has a larger surface area than the round rod shape, and the thickness of the coating on the two flat surfaces is large, Therefore, the total amount of coating applied by flat and rounded surfacing electrodes with different thicknesses is more. These two kinds of surfacing welding electrodes are manufacture...

Embodiment 3

[0035] Embodiment 3: as image 3 As shown, the diameter of the welding core of the round rod-shaped surfacing electrode used is Φ5.0mm, and the thickness of the coating is 2.0mm. The thickness H of welding core 1 is 3.0mm, the radius R of fillet 4 is 1.5mm, and the cross-sectional area of ​​welding core is calculated as the welding rod of Φ8.0mm specification. The thickness of the coating 2 outside the surface 3 is 3.0 mm, and the thickness of the coating 2 outside the two rounded corners 4 is 2.0 mm. These two kinds of surfacing electrodes are manufactured with the same formula, but the specifications of the welding core and the proportion of the coating are different. The two kinds of electrodes are used for comparison in the way of multi-pass continuous surfacing welding on the same base metal 27 .

[0036] With a round bar-shaped surfacing electrode, the welding current is 190A, and the surface of the round bar-shaped electrode surfacing welding seam 32 on the base metal ...

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Abstract

The invention provides a flat round-corner-shaped bead welding rod having coatings with different thicknesses. The section of a welding core is in a flat round corner shape, the width ratio of the welding core and each flat plane is 1;1.5-3, and the radius of each round corner is half of the thickness of the welding core. The sections of coatings are in different thickness shapes, the thicknesses of the coatings coated on the outside of the two flat planes are 1.6-3 mm, and the thicknesses of the coatings coated on the outside of the two round corners are 1.2-2.0 mm. The flat round-corner-shaped bead welding rod can obviously increase the weight ratio of the coatings of welding rods (effective areas of the coatings coated on the flat-round-corner-shaped welding core having the same section are much larger than that of a round-bar-shaped welding core), and much abrasion-resistant alloy is melted and transited into bead welding joints to improve abrasion-resistant performance. Much alloy material having good electrical conductivity is added to improve melting speed and arc stability of the coatings, and the technical problems that two coatings of the two round corners of the welding rod, on two sides, fall off and are melted incompletely because of ultra-thicknesses of the coatings are resolved.

Description

technical field [0001] The invention relates to a flat and rounded surfacing welding electrode with different thickness coatings, which belongs to the technical field of electric welding electrodes. Background technique [0002] Surfacing electrodes are mainly used for welding or repairing the surface of wear-resistant parts, so as to further improve the service life of parts. Surfacing electrodes are also called wear-resistant electrodes. Due to the advantages of flexible and convenient operation, complete varieties and specifications, and low cost of use, it is still the most widely used and widely used welding material in the field of wear-resistant welding. [0003] With the rapid development of the mining industry, the amount of wear-resistant parts is increasing, which significantly increases the workload of wear-resistant surfacing welding and the demand for surfacing electrodes. Therefore, it is important to improve the wear-resistant performance and surfacing weldin...

Claims

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Application Information

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IPC IPC(8): B23K35/16
Inventor 郭面焕郭毅
Owner HARBIN INST OF TECH
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