Calculation tool and closed loop control for the JCO ® pipe forming process

Thome, Mario; Vochsen, Jochen; Gotsis, V.

doi:10.1016/j.proeng.2017.10.1056

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…Thome et al 19 proposed a new solution for the process plan by closed-loop control of the JCO pipe forming, which enables the open pipes with a diameter range from 457 to 1422 mm, wall thicknesses of up to 45 mm, and 12.2 or 18.3 m long. Based on the computation model, the software system Shape was developed, including the three modules ShapeBase, ShapeView, and ShapeControl, as shown in Figure 10.…”

Section: Jco Formingmentioning

confidence: 99%

“…Interaction of the Shape modules for process control. 19 model of the four-point bending JCOC process by analyzing the static equilibrium conditions and elasticplastic deformation, simulated the process to find the maximum punch spacing, and further determined the formulation principles of other process parameters. In addition, a contour detection method for the LSAW pipes in forming process is proposed based on machine vision.…”

Section: Jco Formingmentioning

confidence: 99%

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The JCOE/JCOC manufacturing process and collapse resistance of submarine pipeline

Peng

Wan

Jin

et al. 2023

Advances in Mechanical Engineering

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Submarine pipeline is an important part of deep-sea and ultra-deep-sea oil and gas development. In the cold forming process of longitudinal submerged arc welded (LSAW) pipe, the JCO manufacturing process is one of the key forming technologies for manufacturing submarine pipeline. The main problem encountered by submarine pipelines in offshore oil and gas transportation is insufficient pipeline collapse pressure, which leads to pipeline collapse and shortens the service life of the pipeline. Therefore, the analysis of the JCO manufacturing process is of great significance to improve the collapse resistance of pipelines. In this paper, the development and research status of the JCOE/JCOC manufacturing process are reviewed. The stress, contact, and deformation of the plate are symmetrical in the JCOE/JCOC manufacturing process. The effects of expanding and compression on pipe collapse performance in the JCO manufacturing process are summarized. The asymmetric factors can reduce the collapse performance of the pipeline. Compared with expanding, compression can effectively reduce the ovality of pipe and strengthen the compression performance of pipe, to improve the collapse performance of pipe; finally, the JCOE/JCOC manufacturing process and collapse resistance of submarine pipeline is summarized and prospected.

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Section: Jco Formingmentioning

confidence: 99%

Section: Jco Formingmentioning

confidence: 99%

The JCOE/JCOC manufacturing process and collapse resistance of submarine pipeline

Peng

Wan

Jin

et al. 2023

Advances in Mechanical Engineering

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“…Obviously, these systems can just detect the contour and measure the roundness after the pipe forming completed. Based on the scan laser and three-point bending process, Thome et al [12] built a closed loop control system which can correct the process parameters in the forming process, but the system can just measure the lower half contour of pipe and need a six laser scan unit which require large cost. The CCD camera is widely used in the field of contour detection because of its advantages of large detection area, fast speed and high accuracy.…”

Section: Introductionmentioning

confidence: 99%

Research on Four-Point Air Bending Process and Contour Detection Method for JCO Forming Process of LSAW Pipes

Zhi-yuan

Wang

et al. 2019

Metals

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Aiming at the forming efficiency and roundness of the longitudinal submerged arc welded (LSAW) pipes in JCO (J-shape to C-shape to O-shape) forming process, this paper proposes a four-point air bending process. Compared with the traditional three-point air bending process, The new process can provide a more uniform bending moment, does not need to crimp the edges of steel sheet, shorten the residual straight segment length, and lengthen the forming length in single pass. The mechanical model is established to analyze the static equilibrium conditions and elastic–plastic deformation. The process is simulated by using the software package ABAQUS, to find the maximum punch spacing, and further determine the formulation principles of other process parameters. In addition, a contour detection method for the LSAW pipes in forming process is proposed based on machine vision (planar-array CCD camera produced by Gray Point Corporation, Vancouver, Canada). This method can not only quickly detect the contour of each pass, but also splice the detected contours together to obtain the overall contour with the given splicing algorithm. According to the measured contour, the bending angle, radius, and roundness can be calculated, to correct the punch reduction in the next pass and improve the forming accuracy of the pipes. Finally, an experimental system is designed to verify the proposed four-point bending JCO forming process and contour detection method. The result shows that the error between the contour detection method and CMM (coordinate measuring machine) is less than 0.5% for the overall contour, the two experimental pipes require 13 and 15 passes respectively, the roundness of pipes are less than 1.1%, which is much better than that of traditional three-point bending JCO forming process.

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On course to smart large-diameter pipe production

Thome¹,

Zeller²

2019

Procedia Manufacturing

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Calculation tool and closed loop control for the JCO ® pipe forming process

Cited by 4 publications

References 2 publications

The JCOE/JCOC manufacturing process and collapse resistance of submarine pipeline

The JCOE/JCOC manufacturing process and collapse resistance of submarine pipeline

Research on Four-Point Air Bending Process and Contour Detection Method for JCO Forming Process of LSAW Pipes

On course to smart large-diameter pipe production

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