Scour and corrosion resistant anti-drop ceramic abrasion-resisting structure

A corrosion-resistant and erosion-resistant technology, applied in the direction of ceramic layered products, layered products, chemical instruments and methods, etc., can solve the problems of ceramic fragmentation, easy falling off, wear and tear due to environmental temperature changes, and avoid the expansion of the gap between ceramic parts , high comprehensive economic benefits, and the effect of improving quality and performance

Active Publication Date: 2012-11-14
徐州燃烧控制研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, some scientific research institutes and enterprises at home and abroad have devoted themselves to researching the wear resistance and structure of ceramics. Their wear-resistant products have been used in some industries, but there are still many problems. The existing wear-resistant ceramic products have their own advantages and disadvantages. However, the main problem is that under the conditions of large changes in ambient temperature and strong media erosion, ceramics are broken, severely worn, and easy to fall off, especially in power plants for pulverized coal transportation and pulverized coal burners.

Method used

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  • Scour and corrosion resistant anti-drop ceramic abrasion-resisting structure
  • Scour and corrosion resistant anti-drop ceramic abrasion-resisting structure

Examples

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Embodiment 1

[0024] Embodiment 1, as Figure 1-3 As shown, the ceramic wear-resistant structure resistant to erosion, corrosion, and falling off is a straight pipe, which is mainly composed of a metal base 1 of the pipe fitting, a ceramic component 2, and a steel reinforcement rib 3, and several welds are welded at intervals on the inner surface of the metal base 1 of the pipe fitting. The steel bar reinforcement 3 is attached to the metal substrate 1 on the side opposite to the steel bar reinforcement 3, and a ceramic component 2 composed of several ceramic sheets is attached, and the corresponding grooves of the several ceramic sheets and the steel bar reinforcement 3 are dovetail grooves; The contact surface between the ceramic component 2 and the metal base 1 is filled with a high-temperature resistant inorganic adhesive 4, and the splicing of the several rows of ceramic sheets is stepped or concave-convex splicing to form a wear-resistant layer, which mainly plays the role of supportin...

Embodiment 2

[0025] Embodiment 2, as Figure 4-7 As shown, the ceramic wear-resistant structure that is resistant to erosion, corrosion, and falling off is a wear-resistant ceramic elbow, which is mainly composed of a metal matrix 1 of large and small pipe fittings, a ceramic component 2 and a steel bar reinforcement 3. In the metal matrix 1 of the large pipe fitting The inner surface of the metal matrix 1 of the small pipe fitting or the outer surface of the metal matrix 1 of the small pipe fitting is provided with several steel reinforcement ribs 3 at intervals, and the groove corresponding to the steel reinforcement rib 3 of the metal matrix 1 of the large pipe fitting is a T-shaped groove, such as Figure 6 Shown; The groove corresponding to the steel bar reinforcing rib 3 of the metal matrix 1 of the small pipe fitting is a dovetail groove, such as Figure 7 As shown; on the metal substrate 1 opposite to the steel bar reinforcing rib 3, a ceramic component 2 spliced ​​by several rows ...

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Abstract

The invention discloses a scour and corrosion resistant anti-drop ceramic abrasion-resisting structure which comprises a metal substrate, wherein a plurality of steel bar reinforcing ribs are arranged on the surface of the metal substrate at intervals; a ceramic component which is formed by splicing a plurality of ceramic sheets is adhered to the metal substrate opposite to the side of the steel bar reinforcing ribs; the splicing of every two adjacent rows of ceramic sheets is stepped splicing, concave-convex splicing or linear splicing; high temperature resistant inorganic adhesive is filled between the contact surfaces of the ceramic component and the metal substrate; grooves corresponding to the steel bar reinforcing ribs are arranged at the middle parts of the ceramic sheets; and an anti-drop baffle ring is arranged at the end of the ceramic component. The scour and corrosion resistant anti-drop ceramic abrasion-resisting structure is suitable for the working conditions of frequently bearing high-speed impact abrasion of fine hard grain in the electric industry, petrifaction industry, metallurgy industry, building material industry and the like, and has the characteristics of high abrasion resistance, corrosion resistance and drop resistance, long service life, convenience in maintenance, high comprehensive economic benefit and the like.

Description

technical field [0001] The invention relates to a ceramic wear-resistant structure, which is especially suitable for the erosion-resistant, corrosion-resistant, anti-shedding and anti-shedding ceramic wear-resistant structure for the transportation of dust and hard particles in petrochemical, metallurgy, electric power, building materials and mining industries. Background technique [0002] At present, wear-resistant pipes, pulverized coal burners and other equipment are commonly used in the following wear-resistant methods: most of the wear-resistant ceramics are alumina ceramics, and the combination with the metal substrate is a flat paste method, and the ceramic parts are mainly fixed by organic adhesives. Due to the difference in thermal expansion coefficient between ceramics and metals, when the ambient temperature changes greatly, the porcelain parts are easy to fall off, while the organic adhesive has the defects of high temperature resistance and aging. When the organ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/12B32B15/04B32B18/00C04B37/02
Inventor 朱钢
Owner 徐州燃烧控制研究院有限公司
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