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Surfacing corrosion resistant alloy lined composite tee in transition circular arc and manufacturing method thereof

A technology of corrosion-resistant alloys and transitional arcs, which is applied in the direction of branch pipelines, pipes, pipes/pipe joints/fittings, etc., which can solve the problem of restricting the application range of bimetallic composite pipes, difficult to apply bimetallic composite pipe connections, and poor corrosion resistance and other problems, to achieve the effects of easy guarantee of processing quality, improvement of processing efficiency, and excellent corrosion resistance

Active Publication Date: 2013-11-27
XIAN SUNWARD AEROSPACE MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor corrosion resistance of the traditional three-way pipe, it is difficult to apply it in a strong corrosive environment and connect it with a bimetal composite pipe
Although the pure corrosion-resistant alloy tee has good corrosion resistance, it cannot be applied to occasions with high pressure due to its low strength.
For high pressure and strong corrosive environments, the current common practice is to use integral surfacing welding technology on the inner wall of the tee pipe to process it into a surfacing composite tee. However, due to the low surfacing efficiency, the surfacing composite tee cannot be used on a large scale in the industrial field. , which seriously restricts the application range of bimetallic composite pipes

Method used

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  • Surfacing corrosion resistant alloy lined composite tee in transition circular arc and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 A corrosion-resistant alloy-lined composite tee with surfacing welding in a transitional arc shown includes a tee pipe 1, and the tee pipe 1 is composed of a main pipe and a branch pipe arranged on the main pipe. The insides of the branch pipes communicate with each other. A liner pipe 1 2 is coaxially installed in the main pipe, and a liner pipe 2 3 is coaxially installed in the branch pipe. The wall thickness of the liner pipe 1 2 and the liner pipe 2 3 is the same. A mounting hole is opened on the side wall of the liner-2. The second lining pipe 3 is loaded into the branch pipe from the outside to the inside and its inner end is installed on the installation hole, and the inner end of the second lining pipe 3 and the installation hole are welded connection, the cross-sectional shape of the surfacing layer 4 formed between the inner end of the lining pipe 2 3 and the installation hole is arc-shaped, and the layer thickness of the surfacing layer 4 i...

Embodiment 2

[0056] In this embodiment, the difference between the anti-corrosion alloy lined composite tee manufactured by overlay welding in the transitional arc and embodiment 1 is that the outer diameter of the main pipe is Φ1220mm and the wall thickness is 50mm, and the overlay welding The layer thickness of layer 4 is 4mm, and the corrosion-resistant alloy is a nickel-based alloy; the material of the tee pipe 1 is alloy steel; The assembly gap between the branch pipes is 8mm; the length of the inner liner pipe 2 is 2100mm; the length of the main pipe is 1780mm.

[0057] In this embodiment, the dimensions of the remaining parts of the corrosion-resistant alloy-lined composite tee manufactured by surfacing in the transitional arc are the same as those in Embodiment 1.

[0058] In this embodiment, the manufacturing method of the anti-corrosion alloy lined composite tee used for surfacing welding in the transitional arc is different from that of Example 1 in that: when surfacing welding ...

Embodiment 3

[0061] In this embodiment, the difference between the corrosion-resistant alloy-lined composite tee manufactured by overlay welding in the transitional arc and embodiment 1 is that the outer diameter of the main pipe is Φ660mm and its wall thickness is 24mm, and the overlay welding The layer thickness of layer 4 is 3mm, and the corrosion-resistant alloy is copper alloy; the material of the tee pipe 1 is carbon steel; The assembly gaps between them are all 4mm; the length of the liner-2 is 1090mm; the length of the main pipe is 990mm.

[0062] In this embodiment, the dimensions of the remaining parts of the corrosion-resistant alloy-lined composite tee manufactured by surfacing in the transitional arc are the same as those in Embodiment 1.

[0063] In this embodiment, the manufacturing method of the anti-corrosion alloy lined composite tee used for surfacing welding in the transitional arc is different from that of Example 1 in that: when surfacing welding is carried out in ste...

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Abstract

The invention discloses a surfacing corrosion resistant alloy lined composite tee in a transition circular arc and a manufacturing method thereof. The surfacing corrosion resistant alloy lined composite tee comprises a tee pipe which is formed by a main pipe and a branch pipe; a first lining pipe is coaxially arranged in the main pipe; a second lining pipe is coaxially arranged in the branch pipe; the side wall of the first lining pipe is provided with a mounting hole; the second lining pipe is placed into the branch pipe from outside to inside; the inner end of the second lining pipe, which is arranged in the mounting hole, is in surfacing connection with the mounting hole; the cross section of a surfacing layer which is formed between the inner end of the second lining pipe and the mounting hole is in a circular arc shape; the first lining pipe, the second lining pipe and the surfacing layer are made of corrosion resistant alloy. The manufacturing method of the surfacing corrosion resistant alloy lined composite tee in the transition circular arc comprises assembly and compositing of the inner lining pipes and surfacing. According to the surfacing corrosion resistant alloy lined composite tee in the transition circular arc and the manufacturing method thereof, the manufacturing process is simple, the achievement is convenient, the machining cost is low, the machine-formed composite tee is high in bearing capability and excellent in corrosion resistance, can be effectively connected with a double-metal composite pipe and can be popularized and applied on a large scale, and the economic benefit is remarkable.

Description

technical field [0001] The invention belongs to the technical field of processing and manufacturing of bimetallic composite pipe fittings, in particular to a corrosion-resistant alloy-lined composite tee with surfacing welding in a transitional arc and a manufacturing method thereof. Background technique [0002] The bimetallic composite pipeline lined with corrosion-resistant alloy layer has been widely used in petroleum, natural gas, chemical industry, electric power and municipal and other fields due to the combination of the excellent mechanical properties of carbon steel pipe or alloy steel pipe and the excellent corrosion resistance of the corrosion-resistant alloy layer. , It has been proved by practice that the bimetal composite pipeline lined with corrosion-resistant alloy layer is a kind of medium transportation pipeline with good reliability, high cost performance and excellent comprehensive performance. As an important category of pipe fittings, the tee takes on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L41/02F16L57/06F16L58/04
Inventor 王永芳郭霖杨琳郭崇晓张燕飞魏帆
Owner XIAN SUNWARD AEROSPACE MATERIAL CO LTD
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