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Bimetal composite pipe liquid expansion forming feeding device and process

A bimetallic composite pipe and liquid expansion technology, which is applied to metal processing equipment, feeding devices, positioning devices, etc., can solve the problems of the impact of the feeding device, the damage of the feeding device, and the inability to determine the direction of the welding seam of the base pipe. Reduce labor intensity, improve automation, and solve the effect of welding seam orientation

Active Publication Date: 2015-12-30
CHINA NAT HEAVY MACHINERY RES INSTCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem that the existing bimetallic composite pipe feeding process is easy to cause impact on the feeding device, further causing damage to the feeding device, and the problem that the orientation of the weld seam of the base pipe cannot be determined

Method used

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  • Bimetal composite pipe liquid expansion forming feeding device and process
  • Bimetal composite pipe liquid expansion forming feeding device and process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 and figure 2 As shown, the present invention provides a bimetal composite pipe liquid expansion forming feeding device, including a plurality of fixed clamping devices and a plurality of movable clamping devices, the movable clamping devices and fixed clamping devices are arranged at intervals, and The axial centerlines of the movable clamping device and the fixed clamping device coincide, the base pipe 1.1 is clamped in the movable clamping device and the fixed clamping device, and the base pipe 1.1 is sleeved with a liner pipe 1.2.

[0025] The working process of the bimetal composite pipe liquid expansion forming feeding device is:

[0026] The threaded base pipe 1.1 and liner pipe 1.2 are first axially transported to the movable clamping device, and under the clamping of the movable clamping device, the threaded base pipe 1.1 and liner pipe 1.2 are then transported to the fixed Clamping device, at this time, it should be ensured that the fixed cl...

Embodiment 2

[0029] On the basis of Embodiment 1, the movable clamping device as described is composed of a left movable fixture 2.3 and a right movable fixture 2.4 located on the left and right sides of the base pipe 1.1 and arranged oppositely, and the left movable fixture 2.3 and the right movable fixture 2.4 are locked Combined to form a hollow cavity, the base pipe 1.1 is clamped in the hollow cavity, the left moving fixture driving cylinder 2.2 is installed on the left moving fixture 2.3, the right moving fixture driving cylinder 2.5 is installed on the right moving fixture 2.4, and the left moving fixture 2.3 and the right moving fixture 2.4 are all installed on the moving fixture base 2.1.

[0030] The fixed clamping device includes a fixed left clamp 1.4 and a fixed right clamp 1.10, the fixed left clamp 1.4 and the fixed right clamp 1.10 are engaged to form a hollow cavity, and the base pipe 1.1 in the hollow cavity is clamped;

[0031] The bottom ends of the fixed left clamp 1.4...

Embodiment 3

[0036] A feeding process using a bimetal composite pipe liquid expansion forming feeding device, comprising the following steps:

[0037] Step 1: Rotate the threaded base pipe 1.1 and liner 1.2 through the rotating device 1.3, so that the weld position of the base pipe 1.1 faces upward;

[0038] Step 2: Move at least two movable clamping devices to the loading station, open the left movable fixture 2.3 and the right movable fixture 2.4, put the base pipe 1.1 in, close the left movable fixture 2.3 and the right movable fixture 2.4, and make the base pipe 1.1 Located in the hollow cavity formed when the left moving fixture 2.3 and the right moving fixture 2.4 are engaged, the base pipe 1.1 is clamped;

[0039] Step 3: Separate the movable clamping device clamping the base pipe 1.1 from the movable clamping base 2.1, and the movable clamping device clamping the base tube 1.1 is transported axially to move to the water pressure with multiple fixed clamping devices. In the expansi...

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Abstract

The invention provides a bimetal composite pipe liquid expansion forming feeding device and process. A base pipe and a liner pipe which are well sleeved are axially conveyed onto a movable clamp, and the weld joint of the base pipe faces the 12 o'clock direction before conveying; due to the fact that the base pipe can not rotate in the axial conveying process, the weld joint can not change the direction; after the base pipe axially moves in place, the base pipe is clamped by a left movable clamp and a right movable clamp under the effect of oil cylinders of themselves, the steel pipe is conveyed to a hydraulic composite position by moving the clamping devices, then a left fixed clamping device and a right fixed clamp device are fixed and closed, an upper clamping hoop falls, and then the base pipe where compositing needs to be conducted is clamped in a closed die. By means of the feeding device, on one hand, the problem of impact of the steel pipe on the device is solved; on the other hand, the direction problem of the weld joint of the steel pipe is solved as well; the device can be automatically controlled in the whole technological process, the automation degree of the device is greatly improved, and the labor intensity of workers is greatly lowered.

Description

technical field [0001] The invention relates to a feeding device and a feeding process for liquid expansion forming of a bimetallic composite pipe. Background technique [0002] In recent years, with the rapid development of my country's economy, the demand for energy is increasing. In order to meet market needs, the exploitation of oil and gas fields is gradually developing in the direction of high corrosion environments such as deep wells, oceans, and remote lands. Therefore, it is necessary to develop high-quality high-acid resistant pipes. The bimetallic composite pipe is composed of two metal pipes of different materials: the base pipe is a high-strength carbon steel pipe, the inner lining is a corrosion-resistant alloy, and the pipe layers are tightly bonded through various deformation and connection techniques. With good strength and corrosion resistance, and low cost, it has been widely recognized by domestic and foreign markets and has developed rapidly. [0003] L...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D43/10B21D26/033
CPCB21D26/033B21D43/10
Inventor 寇永乐张建功隋健李培力马海宽高尚晖
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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