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Composite tube and preparation method thereof

A composite tube and inner tube technology, applied in the direction of tubes, rigid tubes, mechanical equipment, etc., can solve the problems of easy falling off of ceramic sheets, influence of personnel operation level, and difficulty in making ceramic lining layers.

Active Publication Date: 2013-10-09
ZOOMLION HEAVY IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is not suitable for the manufacture of longer pipelines, and the manufacturing process is more complicated, which is easily affected by the operation level of personnel.
The pipeline ceramic patch produced by this process is often prone to fall off due to particle impact, mechanical vibration or temperature fluctuation, and cannot achieve good wear resistance
[0005] Therefore, the existing wear-resistant ceramic composite pipe has the problem that the lining ceramic layer is not easy to make or the ceramic sheet is easy to fall off.

Method used

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  • Composite tube and preparation method thereof
  • Composite tube and preparation method thereof

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Embodiment Construction

[0019] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0020] In the present invention, in the case of no contrary description, the used orientation words such as "up, down, left and right" usually refer to the up, down, left and right shown in the accompanying drawings; "inside and outside" Refers to the inside and outside of the outline of each part itself.

[0021] According to one aspect of the present invention, a composite pipe is provided, which includes an inner pipe 1 and an outer pipe 2, wherein the inner pipe 1 is formed by splicing ceramic sheets 4, and the outer pipe 2 is tensioned in the inner pipe 2. Tube 1 outside.

[0022] In the composite pipe of the present invention, the ceramic sheet 4 is used...

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Abstract

The invention discloses a composite tube and a preparation method thereof. The composite tube comprises an inner tube (1) and an outer tube (2), wherein the inner tube (1) is formed by splicing of ceramic pieces (4), and the outer tube (2) is arranged on the outer side of the inner tube (1) in a tensioned mode. On one hand, the ceramic pieces are spliced to form the inner tube, the size and quality of the ceramic pieces can be precisely controlled, and the ceramic pieces can be conveniently spliced to form the inner tube; on the other hand, the outer tube is arranged on the outer side of the inner tube in the tensioned mode, tensioning force can be exerted on the inner tube by the outer tube, additional pressure stress is exerted on the ceramic pieces, therefore splicing of the ceramic pieces is more firm, and falling of the ceramic pieces is avoided.

Description

technical field [0001] The invention relates to pipe fittings, in particular to a composite pipe and a preparation method thereof. Background technique [0002] Concrete delivery pipes require good internal wear resistance and strong impact resistance, high external strength and good toughness to increase the service life of the pipe. In the prior art, concrete delivery pipes mainly include two types, namely, single-layer alloy steel pipes and composite pipes. Among them, the single-layer alloy steel pipe is mostly made of inner wall after quenching. For this reason, the inner wall needs to be subjected to heat treatment processes such as induction heating, which will easily lead to uneven heat treatment process structure, and the local performance of the pipe is poor and easy to be damaged. scrapped. Therefore, composite pipes are mainly used at present. Composite pipes mainly include double-layer composite pipes and wear-resistant ceramic composite pipes. [0003] Doub...

Claims

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Application Information

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IPC IPC(8): F16L9/14
Inventor 刘延斌葛建光
Owner ZOOMLION HEAVY IND CO LTD
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