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Ceramic paint and preparation method thereof as well as heating furnace tube

A technology of ceramic coating and ceramic powder, which is applied in the field of heating furnace tubes, can solve the problems of poor wear resistance, corrosion resistance, fouling resistance and slagging performance of coatings, and achieves high thermal radiation rate, improved wear resistance, high heat The effect of utilization

Inactive Publication Date: 2013-08-28
BEIJING MIDWEST YUANDA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new ceramic coating and its preparation method in order to overcome the defects of poor wear resistance, corrosion resistance and anti-contamination and slagging performance of the coating formed by the existing nano-cermet coating and a heating furnace tube comprising a ceramic coating formed from the ceramic paint

Method used

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  • Ceramic paint and preparation method thereof as well as heating furnace tube
  • Ceramic paint and preparation method thereof as well as heating furnace tube

Examples

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preparation example Construction

[0039] Preferably, in order to ensure that the ceramic coating has better overall performance, the preparation method of the ceramic coating comprises the following steps:

[0040] (1) mixing and grinding the ceramic powder and the rare earth metal oxide to obtain a first mixed powder;

[0041] (2) mixing and grinding the first mixed powder with the transition metal oxide, the selectively added functional material with high thermal conductivity and the titanium alloy to obtain a second mixed powder;

[0042] (3) Mixing the second mixed powder with the binder.

[0043] In the above method, the amount and substance of the ceramic powder, the rare earth metal oxide, the transition metal oxide, the binder, and the selectively added high thermal conductivity functional material and the titanium alloy The kind is such that the finally prepared ceramic paint satisfies the basic embodiment, preferred embodiment or most preferred embodiment of the aforementioned ceramic paint of the p...

Embodiment 1

[0050] This example is used to illustrate the ceramic coating provided by the present invention and its preparation method.

[0051] 86 parts by weight of CaHPO 4 2H 2 O and 14 parts by weight of calcium carbonate were mixed to obtain 100 parts by weight of ceramic powder. The ceramic powder is mixed with 30 parts by weight of rare earth metal oxide (composed of yttrium oxide, lanthanum oxide and cerium oxide, and the weight ratio of yttrium oxide, lanthanum oxide and cerium oxide is 1:1.3:1.6), and wet Ball milling for 5 hours; then add 60 parts by weight of transition metal oxide (made up of titanium oxide, chromium oxide, zinc oxide, vanadium oxide, manganese oxide and iron oxide, and titanium oxide, chromium oxide, zinc oxide, vanadium oxide, manganese oxide The weight ratio of iron oxide and iron oxide is 100:100:60:20:10:15), 30 parts by weight of silicon carbide and 20 parts by weight of titanium-molybdenum alloy (purchased from Wenzhou Tongda Bimetal Co., Ltd.), and ...

Embodiment 2

[0053] This example is used to illustrate the ceramic coating provided by the present invention and its preparation method.

[0054] 88 parts by weight of CaHPO 4 2H 2 O and 12 parts by weight of calcium carbonate were mixed to obtain 100 parts by weight of ceramic powder. The ceramic powder is mixed with 40 parts by weight of rare earth metal oxide (composed of yttrium oxide, lanthanum oxide and cerium oxide, and the weight ratio of yttrium oxide, lanthanum oxide and cerium oxide is 1:1.1:2), and wet Ball milling for 5 hours; then add 40 parts by weight of transition metal oxide (made up of titanium oxide, chromium oxide, zinc oxide, vanadium oxide, manganese oxide and iron oxide, and titanium oxide, chromium oxide, zinc oxide, vanadium oxide, manganese oxide and the weight ratio of iron oxide is 100:120:40:10:20:5), 10 parts by weight of silicon nitride and 40 parts by weight of titanium-lead alloy (purchased from Jinan Xinhaitong Special Alloy Co., Ltd.), and again Wet b...

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Abstract

The invention relates to ceramic paint and a preparation method thereof. The ceramic paint contains ceramic powder, transition metal oxide, rare earth metal oxide and an adhesive. Relative to 100 parts by weight of the ceramic powder, the ceramic paint comprises 20-150 parts by weight of the transition metal oxide, 5-50 parts by weight of the rare earth metal oxide and 5-80 parts by weight of the adhesive, wherein the ceramic powder is a compound of calcium hydrogen phosphate and calcium carbonate; and the rare earth metal oxide is a combination of yttrium oxide, lanthanum oxide and cerium oxide. The invention also relates to a heating furnace tube with a ceramic coating formed by the ceramic paint. The ceramic coating formed by the ceramic paint has obviously improved wear resistance, corrosion resistance and fouling and slag-bonding resistance, a high thermal radiation rate and better thermal shock resistance stability.

Description

technical field [0001] The invention relates to a ceramic coating, a preparation method of the ceramic coating, and a heating furnace tube comprising a ceramic coating formed from the ceramic coating. Background technique [0002] Global climate change has a profound impact on human survival and development, and low-carbon technology has increasingly become an international hot spot and trend. Low-carbonization will drive the real economy from two aspects, one is to accelerate the development of new energy industries such as solar energy and wind energy, and the other is to upgrade traditional industries to low-carbonization, both of which cannot be separated from the support of related new material industries. [0003] China's petrochemical industry accounts for 20% of the total industrial economy and is very important to the national economy. The petrochemical industry includes two major parts: petroleum, petrochemical and chemical industry. Various heating furnaces and ...

Claims

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Application Information

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IPC IPC(8): C04B28/34
Inventor 周晋峰张斌
Owner BEIJING MIDWEST YUANDA TECH
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