Multi-layer composite wear-resistant pressure reduction pipe and manufacturing method thereof

Abstract

The invention discloses a multi-layer composite wear-resistant pressure reduction pipe and a manufacturing method of the multi-layer composite wear-resistant pressure reduction pipe. The multi-layer composite wear-resistant pressure reduction pipe is sequentially formed by a wear-resistant ceramic inner layer, a micro-expansion combination layer and a metal outer layer from inside to outside in a composite mode. The multi-layer composite wear-resistant pressure reduction pipe sequentially comprises a diameter reduction section, a straight pipe section and a diameter increasing section from the inlet end to the outlet end, and the portion, located at the inlet end, of the metal outer layer and the portion, located at the outlet end, of the metal outer layer are provided with an inlet connecting flange and an outlet connecting flange respectively. The wear-resistant ceramic inner layer, the combination layer and the metal outer layer are seamlessly combined, integrality of the product is embodied, and the phenomenon that the inner layer and the outer layer are loosened can not occur. The ceramic layer can be made of zirconia toughened alumina ceramic, and excellent durability of the product is achieved due to the rigidity and wear resistance of the product. The inner layer ceramic material, the combination layer and the outer layer metal material are firmly combined together due to the micro-expansion combination layer through the adhering action and the micro-expansion action. The multi-layer composite wear-resistant pressure reduction pipe can be of a multi-section combination structure, and therefore a pipeline can be conveniently manufactured, and machining accuracy of the pipeline is improved.

Description

technical field [0001] The invention relates to a wear-resistant pipeline used in coal-to-oil production and a preparation method for the wear-resistant pipeline. Background technique [0002] Abrasion-resistant decompression pipe is a kind of coal slag conveying pipe widely used in coal-to-liquids production line. In order to improve the wear resistance and corrosion resistance of metal conveying pipes, the existing technology is mainly to make ceramic and metal composite pipes. The existing ceramic and metal composite pipe production processes mainly include the following two types: [0003] 1. Paste tiles on the inner wall of metal pipes. This product has the following deficiencies in use: [0004] 1. The pasted tiles have no integrity and are easy to fall off; [0005] 2. Can not transport large particles; [0006] 3. Can not be impacted; [0007] 4. Combination splicing is difficult to make. [0008] 2. Coating adhesive on the outer wall of the ceramic pipe or coat...

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Problems solved by technology

[0009] The invention provides a multi-layer composite wear-resistant decompression pipe and a preparation method thereof, which solve the technical problems that the existing wear-resistant pipe has low strength, difficult manufacture, easy loosening and cracking between the ceramic pipe and the metal pipe

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