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High-toughness fused corundum wear-resistant coating and preparation method thereof

A technology of fused corundum and wear-resistant coatings, applied in the field of coatings, can solve the problems of inability to play a protective role, low toughness, easy to produce cracks, etc., to reduce thermal recession, improve heat resistance, and increase compatibility. Effect

Active Publication Date: 2019-12-20
YIXING GUOQIANG FURNACE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the raw materials in this application are only made by fusing high-strength raw materials together at high temperature, which has the disadvantage of low toughness, is prone to cracks, and cannot play a good protective role.

Method used

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  • High-toughness fused corundum wear-resistant coating and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0049] The preparation method of this wear-resistant coating comprises the steps:

[0050] Step S1, adding the fused corundum into the mixer according to its weight, and stirring at 300r / min for 2-3min;

[0051] Step S2, then add the weighed binder into the mixer, and continue to stir at 300r / min for 2-3min;

[0052] Step S3: Add additives and activated micropowder into the mixer, increase the stirring speed to 500r / min, stir for 4-5min, finally add silicon carbide, stir for 3-5min, after mixing evenly, add ethanol, stir at 600r / min for 2- 3min to obtain a wear-resistant coating.

Embodiment 1

[0054] A high-toughness fused corundum wear-resistant coating, made of the following raw materials in parts by weight: 30 parts of fused corundum, 5 parts of binder, 0.2 parts of auxiliary agent, 2 parts of activated micropowder, 1.6 parts of silicon carbide, and 7 parts of ethanol;

[0055] The wear-resistant coating is made by the following steps:

[0056] Step S1, adding the fused corundum into the mixer according to its weight, and stirring at 300r / min for 2min;

[0057] Step S2, then add the weighed binder into the mixer, and continue to stir at 300r / min for 2min;

[0058] Step S3, add the auxiliary agent and activated micropowder into the mixer, increase the stirring speed to 500r / min, stir for 4min, finally add silicon carbide, stir for 3-5min, after mixing evenly, add ethanol, stir for 2min at 600r / min, to obtain Grinding paint.

Embodiment 2

[0060] A high-toughness fused corundum wear-resistant coating, made of the following raw materials in parts by weight: 35 parts of fused corundum, 6.5 parts of binder, 0.25 parts of auxiliary agent, 2.5 parts of activated micropowder, 1.8 parts of silicon carbide, and 8.5 parts of ethanol;

[0061] The wear-resistant coating is made by the following steps:

[0062] Step S1, adding the fused corundum into the mixer according to its weight, and stirring at 300r / min for 2.5min;

[0063] Step S2, then add the weighed binder into the mixer, and continue to stir at 300r / min for 2.5min;

[0064] Step S3: Add additives and activated micropowder into the mixer, increase the stirring speed to 500r / min, stir for 4.5min, finally add silicon carbide, stir for 4min, after mixing evenly, add ethanol, stir for 2.5min at 600r / min, and obtain Grinding paint.

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Abstract

The invention discloses a high-toughness fused corundum wear-resistant coating. The coating is prepared from the following raw materials: fused corundum 30-40 parts, a binding agent 5-8 parts, an auxiliary agent 0.2-0.3 part, activated micro-powder 2-3 parts, silicon carbide 1.6-2 parts and ethanol 7-10 parts. The invention also discloses a preparation method of the wear-resistant coating. According to the invention, fused corundum is taken as a main wear-resistant matrix and modified phenolic resin is taken as the binding agent of the wear-resistant matrix, the wear-resistant matrix be bondedand firmly attached to a substrate surface, and a dense friction layer can be formed on the substrate surface; through addition of the activated SiO2 powder into the wear-resistant coating, frictionbetween fused corundum particles is reduced, fluidity of the coating is improved, air holes of the wear-resistant coating can be filled, and thus density of the coating can be improved; and compounding of the SiC exerts an effective strengthening and toughening effect, so that the high-toughness fused corundum coating with good wear resistance is obtained, and the coating is suitable for surface protection of equipment.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a high-toughness fused corundum wear-resistant coating and a preparation method thereof. Background technique [0002] At present, many important components in the power plant, such as boiler four tubes, fan blades, pulverized coal pipe elbows, steam turbine final stage blades, etc., have greatly shortened their service life due to wear, high temperature corrosion, and water erosion, which seriously affects the unit. Safe operation directly affects the economic benefits of power production. Most of the domestic solutions to such problems are regular replacement of damaged parts, which requires a long construction period and a large investment. With the development of new materials for industrial use, special high-performance materials have become a new hotspot in material science research. Fused corundum material has extremely high temperature resistance, oxidation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/12
CPCC04B26/122C04B2111/00482C04B2201/50C04B14/303C04B22/16C04B24/18C04B14/064C04B14/324C04B24/02
Inventor 林国强
Owner YIXING GUOQIANG FURNACE IND
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