Manufacturing method for large-caliber abrasion-resistant corrosion-resistant ternary composite reducer pipe

A ternary composite and manufacturing method technology, applied in pipeline protection, pipeline anti-corrosion/rust protection, pipeline damage/wear prevention, etc., can solve the problems of single performance, weak binding force, short life, etc., and achieve long service life, Strong adhesive force, solve the effect of short life

Inactive Publication Date: 2013-11-27
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These simple pipes or binary composite pipes are only suitable for simple wear or corrosion conditions due to their single performance, physical bonding at the interface, and weak binding force. Leaked in just one month, had a great impact on the social economy

Method used

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  • Manufacturing method for large-caliber abrasion-resistant corrosion-resistant ternary composite reducer pipe
  • Manufacturing method for large-caliber abrasion-resistant corrosion-resistant ternary composite reducer pipe
  • Manufacturing method for large-caliber abrasion-resistant corrosion-resistant ternary composite reducer pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1: DN700-DN600 length 200 reducer pipes are manufactured by this method (unnotified units are mm, the same below)

[0043] a. Use gradient method to perform self-propagating high-temperature centrifugal synthesis reaction on the variable diameter tube section by section. The steps are as follows:

[0044] This large diameter reducer has a large end outer diameter of 720, a small end outer diameter of 630, a wall thickness of 14, a large end inner diameter of 692, a small end inner diameter of 602, and a large end diameter difference of 90, with a diameter difference of 18 (one side The difference 9) is the gradient interval, it can be divided into 5 sections (segments), then the axial length of the reducer is 200, and each segment is 40 after being divided into 5 sections. The diameter of each middle section in the reducer is 674, 656, 638. , 620, according to the above-mentioned diameter to make four stop rings, the inner diameter of the stop ring opening is 400, th...

Embodiment 2

[0053] Example 2: DN1200-DN1000 length 400 reducer pipe made by this method (units not specified are mm, the same below)

[0054] a. Use gradient method to perform self-propagating high-temperature centrifugal synthesis reaction on the variable diameter tube section by section. The steps are as follows:

[0055] The outer diameter of the large end of this large diameter reducer is 1220, the outer diameter of the small end is 1020, the wall thickness is 14, the inner diameter of the large end is 1192, the inner diameter of the small end is 992, the inner diameter difference of the large and small ends is 200, and the diameter difference is 25 (single side The difference of 12.5) is the gradient interval, it can be divided into 8 sections (segments), the axial length of the reducer is 400, and the length of each section after 8 sections is 50. The diameter of each middle section in the reducer is 1167, 1142, 1117 , 1092, 1067, 1042, 1017, respectively make 7 baffle rings with the abo...

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Abstract

The invention relates to a manufacturing method for a large-caliber abrasion-resistant corrosion-resistant ternary composite reducer pipe. The nominal diameter (DN) of the reducer pipe is 600mm-1200mm, and reducer pipe is used for a large-caliber ternary composite pipeline for transporting corrosive wearing, erosive wearing, abrasion scaling, composite corrosion media and the like. A manufacturing process for manufacturing an abrasion-resistant corrosion-resistant composite layer on the inner surface of the reducer pipe and a manufacturing method include the step that 1 a self-propagating high-temperature centrifugal synthesis (SHS) reaction is conducted through a gradient method in a segmentation mode step by step, and reaction products TiB2 / ZrB2-Al2O3 and Fe are distributed on the inner surface of the reducer pipe effectively; 2 abrasion-resistant materials are used for filling the spaces among the gradients and mainly composed of abrasion-resistant inorganic particles and modified resin composite adhesives; 3 inner surface pouring forming is conducted through a model vacuum pouring process. By means of the large-caliber abrasion-resistant corrosion-resistant ternary composite reducer pipe, combination force of a lining composite layer and an outer steel pipe interface is strong, mechanical impact resistance is high, abrasion resistance and corrosion resistance are good, the service life is long, and important project value is achieved.

Description

technical field [0001] The invention relates to the technical field of variable-diameter composite pipe production, in particular to a composite processing of metals, ceramics and polymers through self-propagating high-temperature synthesis (SHS for short) and vacuum centrifugal impregnation casting and other special methods. The manufacturing method of the large-diameter wear-resistant and corrosion-resistant ternary composite variable diameter pipe. Background technique [0002] my country's economy has developed rapidly in the past ten years, and a series of major construction projects related to energy and environmental protection, such as flue gas desulfurization, coal-to-oil conversion, Sichuan-to-East gas transmission, oil and gas purification, and seawater desalination, are all under implementation. Premature leaks from equipment and piping are frequent due to materials involved in the interaction of corrosive wear and erosion wear. Especially for thermal power plan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L58/10F16L58/14F16L57/06
Inventor 杨振国梅彤于志强
Owner FUDAN UNIV
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