A kind of wear-resistant surfacing alloy material and preparation method thereof

A technology of alloy materials and surfacing materials, applied in welding/cutting media/materials, welding equipment, metal processing equipment, etc., can solve the problem of decreased safety of surfacing layer, poor wear resistance of surfacing layer, and toughness of surfacing layer Low problems, to achieve the effect of improving hard phase morphology, good wear resistance, and improving wear resistance

Active Publication Date: 2017-01-25
美光(江苏)三维科技有限公司
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Problems solved by technology

[0006] However, the above-mentioned developed wear-resistant surfacing materials at home and abroad generally have the disadvantages of low hardness of the surfacing layer, poor hardness uniformity, and low strength and toughness of the surfacing layer. Therefore, the surfacing layer is not only poor in wear resistance, but also easy to crack during use. and spalling, resulting in a decrease in the safety of the surfacing layer

Method used

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Examples

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Embodiment Construction

[0012] Below in conjunction with embodiment the present invention will be further described.

[0013] Material of the present invention is made respectively surfacing electrode (seeing embodiment 1), flux cored welding wire (seeing embodiment 2), bulk surfacing material (seeing embodiment 3) and powder surfacing material (seeing embodiment 4), Its chemical composition is shown in Table 1, and it is respectively used for the surfacing welding of the grinding roller of the coal mill. ) and 72.0HRC (see Example 4), after testing, its wear resistance is improved by 130-160% compared with common high-chromium cast iron surfacing materials.

[0014] Table 1 Chemical composition of wear-resistant surfacing materials (mass fraction, %)

[0015] element C B Cr V Nb K Ce Example 1 4.81 3.48 29.37 8.04 2.50 0.92 1.48 Example 2 4.92 3.49 28.12 8.47 2.08 0.95 1.33 Example 3 4.86 3.39 29.90 8.32 2.33 0.91 1.45 Example 4 4.97 3.30...

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Abstract

The invention discloses a wear resistant surfacing alloy material which comprises, by weight, the components of 4.8%-5.0% of C, 3.3%-3.5% of B, 28%-30% of Cr, 8.0%-8.5% of V, 2.0%-2.5% of Nb, 0.9%-1.0% of K, 1.2%-1.5% of Ce, 1.2%-1.5% of Bi, 0.50%-0.65% of Ca, less than 1.2% of Si, less than 0.5% of Mn, less than 0.05% of S, less than 0.05% of P and the balance of Fe. Compared with the prior art, the material has the advantages of being high in hardness, good in abrasion resistance and the like, the material is used for flour mill grinding roller surfacing, and wear resistance is improved by 130%-160% compared with a common high-chromium cast iron surfacing material.

Description

technical field [0001] The invention belongs to the technical field of surface treatment, and in particular relates to a wear-resistant surfacing alloy material. Background technique [0002] Material wear is one of the important characteristics of the failure of engineering materials. The wear of materials has caused the reduction of the service life of parts and the reduction of equipment operation rate. Therefore, the development of new surface treatment methods and surface strengthening of wear-resistant parts are the key to improving the wear resistance of materials. The common surface treatment methods include electroplating, spraying, surfacing welding, etc. Among them, surfacing welding has the characteristics of easy operation and flexible application, and has been widely used in industrial production. [0003] Chinese invention patent CN103785967A discloses a slag-free self-shielding flux-cored welding wire for vanadium-niobium composite strengthened wear-resistant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3086B23K35/40
Inventor 周宏符寒光
Owner 美光(江苏)三维科技有限公司
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