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Highly abrasion-proof columbium carbide-chromium carbide composite surfacing welding rod

A technology for surfacing electrodes and chromium carbides, which is applied in welding media, welding equipment, welding/cutting media/materials, etc.

Inactive Publication Date: 2006-11-22
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Abrasive wear test is carried out on the surfacing metal, and the quenched No. 45 steel with a hardness of HRC50 is used as the standard sample. The relative wear resistance of the Fe-Cr-C-B wear-resistant surfacing alloy is 5 to 6 times higher than that of the standard sample, which can meet the The use requirements under general wear conditions, but for more severe wear conditions, the wear resistance of the above wear-resistant surfacing electrodes still cannot meet the use requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Embodiment 1: the weight ratio of welding core (brand H08A, diameter 4mm) and coating is 35: 65, and the component in the coating is by weight percent: cornstarch 2%; Marble 3%; Ilmenite 3%; Fluorite 3%; Feldspar 1%; Quartz 2%; Iron oxide red 1%; White niobium 2%; Sodium bicarbonate 0.5%; Flake graphite 1.5%; Mica 2%; Medium carbon ferromanganese 2%; High carbon chromium 51.5% iron; 0.5% ferro-titanium; 25% niobium carbide. The above coating composition is mixed, and then an appropriate amount of potassium sodium water glass is added to stir evenly, and the welding core and the coating are pressed and coated together by an electrode press coater to make a surfacing electrode. Abrasive wear test was carried out on the surfacing electrode, and the quenched No. 45 steel with a hardness of HRC50 was used as the standard sample. The relative wear resistance of the surfacing electrode was 18 times higher than that of the standard sample, and it was suitable for working condit...

Embodiment 2

[0008] Embodiment 2: the weight ratio of welding core (brand H08A, diameter 4mm) and coating is 40: 60, and the component in the coating is by weight percentage: cornstarch 3%; Marble 4%; Fluorite 5%; Stone 2%; Quartz 2%; Iron Oxide Red 1%; White Niobium 2%; Sodium Bicarbonate 0.5%; Flake Graphite 1.5%; Mica 2%; Medium Carbon Ferromanganese 3%; 1%; niobium carbide 8%. The preparation method is the same as in Example 1. Abrasive wear test was carried out on the surfacing electrode, and the quenched No. 45 steel with a hardness of HRC50 was used as the standard sample. The relative wear resistance of the surfacing electrode was 18 times higher than that of the standard sample, and it was suitable for high wear and medium impact load conditions. condition.

Embodiment 3

[0009] Embodiment 3: the weight ratio of welding core (brand H08A, diameter 4mm) and coating is 40: 60, and the component in the coating is by weight percent: cornstarch 5%; Marble 6%; Ilmenite 7%; Fluorite 5%; Feldspar 3%; Quartz 2%; Iron oxide red 2%; White niobium 2%; Sodium bicarbonate 0.5%; Flake graphite 1.5%; Mica 2%; Medium carbon ferromanganese 2%; High carbon chromium 45% iron; 1% iron titanium; 16% niobium carbide. The preparation method is the same as in Example 1. Abrasive wear test was carried out on the surfacing electrode, and the quenched No. 45 steel with a hardness of HRC50 was used as the standard sample. The relative wear resistance of the surfacing electrode was 12 times higher than that of the standard sample, and it was suitable for the working conditions of impact load.

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Abstract

The invention relates to a niobium carbide-chromium carbide composite abrasion resistant surfacing welding rod, belonging to the surfacing welding material. Wherein, said solder rod is formed by core and cover, whose mass rate is (35:65)-(40:60); said cover comprises following components in mass percentages that titanium dioxide in 2-6%; marble in 3-9%; ilmenite in 0-8%; fluorite in 3-10%; feldspar in 1-3%; quartz in 0.5-2%; iron oxide red in 1-6%; white niobium in 1-6%; bicarbonate in 0.2-1%; crystaline flake graphite in 0.5-4%; isinglass in 1-4%; medium-carbon ferromanganese in 1-5%; high carbon ferro-chrome in 45-65%; ferrotitanium in 0.2-1%; and niobium carbide in 8-25%. The inventive solder rod can be widely used in abrasion resistant surfacing weld of mechanical element.

Description

technical field [0001] The invention relates to a wear-resistant surfacing welding electrode, in particular to a niobium carbide-chromium carbide composite high wear-resistant surfacing welding electrode. Background technique [0002] At present, the wear-resistant surfacing electrodes similar to the present invention used in industrial production are mainly Fe-Cr-C type or Fe-Cr-C-B type wear-resistant surfacing electrodes, and the surfacing metals of these surfacing electrodes contain more The chromium-iron composite carbide has good anti-wear properties. Abrasive wear test is carried out on the surfacing metal, and the quenched No. 45 steel with a hardness of HRC50 is used as the standard sample. The relative wear resistance of the Fe-Cr-C-B wear-resistant surfacing alloy is 5 to 6 times higher than that of the standard sample, which can meet the The use requirements under general wear conditions, but for more severe wear conditions, the wear resistance of the above-ment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/365
Inventor 王智慧
Owner BEIJING UNIV OF TECH
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