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Manufacturing method of large-caliber wear-resistant and corrosion-resistant ternary composite pipe

A ternary composite and manufacturing method technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve the problems of pipe straightness and roundness deformation, steel pipe perforation, etc., to achieve reduced deformation, tight and smooth combination The effect of leveling, ensuring strength and rigidity

Inactive Publication Date: 2013-12-18
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the production process of large-diameter pipes, due to the large diameter and relatively thin wall thickness of the steel pipe, self-propagating high-temperature centrifugal synthesis (Self-propagating high-temperature Synthesis referred to as SHS) reaction due to high temperature, the straightness and roundness of the pipe will be seriously deformed, or the steel pipe will be perforated due to local overheating. tube making

Method used

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  • Manufacturing method of large-caliber wear-resistant and corrosion-resistant ternary composite pipe
  • Manufacturing method of large-caliber wear-resistant and corrosion-resistant ternary composite pipe
  • Manufacturing method of large-caliber wear-resistant and corrosion-resistant ternary composite pipe

Examples

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Effect test

Embodiment 1

[0035] Example 1: This method is used to make DN1000 length 6000 ternary composite pipes (unspecified length units are mm, the same below)

[0036] a. Application of self-propagating high-temperature centrifugal synthesis reaction (SHS) to fabricate large-diameter ceramic composite steel pipes

[0037] This large-diameter steel pipe is made of steel plate, with an outer diameter of 1020, a wall thickness of 12, and a length of 2000. The butt joint is automatically welded, and the roundness error and linear reading error are not greater than 2. (like Figure 7 ), the steel pipe butt joint is placed at the butt joint gap between the upper and lower casings.

[0038] Install the cover at both ends, the cover is closely attached to the steel pipe, and fixed firmly with bolts.

[0039] Prepare thermite, with the ratio of iron oxide powder 56%, aluminum powder 21%, zirconia powder 8%, titanium oxide powder 4%, silicon oxide powder 3%, aluminum oxide powder 3%, boron oxide 5%, etc....

Embodiment 2

[0045] Example 2: This method is used to make a ternary composite pipe with a length of DN600 and a length of 4000 (unspecified length units are mm, the same below)

[0046] a. Application of self-propagating high-temperature centrifugal synthesis reaction (SHS) to fabricate large-diameter ceramic composite steel pipes

[0047] This large-diameter steel pipe is made of steel plate, with an outer diameter of 630mm, a wall thickness of 12mm, and a length of 2000mm. (like Figure 7 ), the steel pipe butt joint is placed at the butt joint gap between the upper and lower casings.

[0048] Install the cover at both ends, the cover is closely attached to the steel pipe, and fixed firmly with bolts.

[0049] Prepare thermite, with the ratio of iron oxide powder 56%, aluminum powder 19%, zirconia powder 8%, titanium oxide powder 5%, silicon oxide powder 3%, aluminum oxide powder 4%, boron oxide 5%, etc. Prepare 86kg of reaction raw materials, mix them evenly, add them into a large-d...

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Abstract

The invention relates to a manufacturing method of a large-caliber wear-resistant and corrosion-resistant ternary composite pipe. The ternary composite pipe has the nominal diameter (DN) to be 600-1200mm. The method concretely comprises the steps: 1, using a matched wedge ring type fixture or a sleeve wedge ring type fixture on a centrifugal machine, and enabling a large-caliber steel pipe to make centrifugal rotation; 2, carrying out an SHS (self-propagating high-temperature synthesis) to enable the reaction product TiB2 / ZrB2-Al2O3 to be effectively distributed on the inner surface of the steel pipe; 3, adopting a centrifugal vacuum impregnation process and carrying out inner surface mixed resin casting molding. According to the manufacturing method, the wear-resistant and corrosion-resistant ternary composite pipe is manufactured on the inner surface of the steel pipe by the matched mould equipment, so that the problems caused by the SHS technology applied to the manufacture of the large-caliber pipe can be solved. The large-caliber wear-resistant and corrosion-resistant ternary composite pipe manufactured by the method is strong in bonding force between an inner liner composite layer and an outer layer steel pipe interface and high in mechanical shock resistance, effectively solves the problems of cracking and falling off of different composite layers due to different thermal expansions of different mediums, is good in wear resistance and corrosion resistance and long in service life, and has important construction value.

Description

technical field [0001] The invention relates to the technical field of composite pipe production, in particular to a kind of composite pipe made of metal, ceramics and polymer through special methods such as self-propagating high-temperature synthesis (SHS for short) and vacuum centrifugal impregnation casting. A method for manufacturing a large-diameter wear-resistant and corrosion-resistant ternary composite 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 plants in coastal areas, due to the eros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/14C23C24/10B29C39/10
Inventor 杨振国梅彤于志强
Owner FUDAN UNIV
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