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A method for manufacturing a large-diameter wear-resistant and corrosion-resistant ternary composite variable diameter 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: 2017-06-06
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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  • A method for manufacturing a large-diameter wear-resistant and corrosion-resistant ternary composite variable diameter pipe
  • A method for manufacturing a large-diameter wear-resistant and corrosion-resistant ternary composite variable diameter pipe
  • A method for manufacturing a large-diameter wear-resistant and corrosion-resistant ternary composite variable diameter pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1: This method is used to manufacture DN700-DN600 variable diameter pipes with a length of 200 (unspecified units are mm, the same below)

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

[0044] The outer diameter of the large end of this large-diameter variable diameter tube is 720, the outer diameter of the small end is 630, the wall thickness is 14, the inner diameter of the large end is 692, the inner diameter of the small end is 602, and the difference between the inner diameters of the large and small ends is 90. The difference in diameter is 18 (unilateral Difference 9) is the gradient interval, which can be divided into 5 sections (segments), then the axial length of the variable diameter tube is 200, and after being divided into 5 sections, each section is 40, and the diameter of each section in the middle of the var...

Embodiment 2

[0053] Example 2: This method is used to manufacture a DN1200-DN1000 variable diameter pipe with a length of 400 (unspecified units are mm, the same below)

[0054] a. Use the gradient method to carry out the self-propagating high-temperature centrifugal synthesis reaction on the variable diameter tube in sections and steps. The steps are as follows:

[0055] The outer diameter of the large end of this large-diameter variable diameter tube 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, and the inner diameter of the small end is 992. Difference 12.5) is the gradient interval, it can be divided into 8 sections (sections), the axial length of the variable diameter tube is 400, and the length of each section after being divided into 8 sections is 50, and the diameter of each section in the middle of the variable diameter tube is: 1167, 1142, 1117 , 1092, 1067, 1042, and 1017, respectively make 7 retainin...

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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 Patents(China)
IPC IPC(8): F16L58/10F16L58/14F16L57/06
Inventor 杨振国梅彤于志强
Owner FUDAN UNIV
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