A mechanical model of symmetrical three-roller setting round process: The static bending stage

Zhao, Jun; Ma, Rui

doi:10.1016/j.jmatprotec.2016.01.002

Cited by 20 publications

(6 citation statements)

References 14 publications

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“…The current pipeline standard API (American Petroleum Institute) Spec 5L 23 stipulates that the roundness of pipe should not exceed 1.5% of the diameter (0.75% when the pipe is used offshore). To effectively reduce the ovality of the pipeline, the pipe calibration methods mainly include expanding process, [24][25][26][27][28][29][30] compression process, 25,[31][32][33][34][35] over-bending setting round by mold press type method, 36 internal expansion over bending and calibration (IEOBC) process, 37 the symmetrical threeroller setting round process, [38][39][40] the process of continuous and synchronous calibration of roundness and straightness by three rollers, [41][42][43][44][45][46] and so on. Zhai et al 37 built the intelligent control system of IEOBC process, which is mainly used for pipe end rounding .…”

Section: Calibration Methodsmentioning

confidence: 99%

“…Yu et al 38 proposed the symmetrical three-roller setting round process, built the mechanical model and numerical simulation model, 39 and carried out theoretical analysis and experimental research on process parameters. 40 Huang et al 41 developed the symmetrical three-roller setting round process, which applies to thin-walled pipe, studied the process parameters, roller design, 42 mechanical model, 43 stress strain distribution, 44 deformation mechanism, 45 and weld influence. 46 At present, expanding and compression processes are mainly used to calibrate pipes in the industry.…”

Section: Jco Manufacturing Processmentioning

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: Calibration Methodsmentioning

confidence: 99%

Section: Jco Manufacturing Processmentioning

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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“…He et al [9] and Wang et al [10] respectively studied the external holding type, internal supporting type, and setting round process for pressure vessels, and gave the appropriate die parameters and process parameters. Yu et al established the mechanical model and springback analytical model for the symmetrical three-roller setting round process through an upper roller built-in [8,11] and an upper roller built-out [12,13], allowing them to obtain the curvature distribution and historical changes and realize the optimization of process parameters and the prediction of reduction. Then, Yu et al [14,15] developed the process of a continuous and synchronous calibration of roundness and straightness with three rollers, and carried out research on theoretical analysis, numerical simulation, and roller design.…”

Section: Introductionmentioning

confidence: 99%

Intelligent Control System of Internal Expansion over Bending and Calibration (IEOBC) Process for Large Pipe Ends

et al. 2021

Self Cite

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The flattening and asymmetry of a pipe end section seriously affects the welding quality between pipes, therefore the calibration process for pipe end to improve roundness is essential. Because the calibration for a pipe end involves local elastic-plastic deformation for the end effect, it is still difficult to establish an accurate theoretical model. The reasonable and intelligent control method is nevertheless an effective means to improve the production efficiency. In this paper, an internal expansion over bending and calibration (IEOBC) process is introduced. According to the characteristics of the process, the structure of the mobile intelligent calibration machine for large pipe ends is designed, and the intelligent control hardware system of the machine is built. Based on the LabVIEW software platform, an intelligent control software system for the IEOBC process is developed. A three-step control strategy is combined with pipe size detection and ovality recognition. The intelligent prediction and execution of the calibration process parameters are realized. The experimental results show that the intelligent control system has good stability and accuracy, and the ovality can be controlled within 0.5%.

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“…At present, the roundness calibration process mainly includes the whole-diameter roundness calibration process [5,6], the over-bending roundness calibration process [7][8][9], and the roll-type roundness calibration process [10][11][12]. Common straightness calibration techniques include the pressure straightening [13][14][15] and the cross roll straightening [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Deformation Mechanism Analysis of Three-Roller Continuous and Synchronous Calibration Process of Straightness and Roundness For LSAW Pipes

Huang

Wang³

et al. 2021

Preprint

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Continuous and synchronous calibration process of straightness and roundness for LSAW (Longitudinally Submerged Arc Welding, LSAW) pipes with three rollers is a bidirectional reciprocating bending process that includes axial and circumferential directions. It is particularly important to reveal the deformation mechanism, which provides theoretical support for the calibration process to be applied to actual production. Based on this, through the combination of references, theoretical analysis and numerical simulation, the deformation mechanism is analyzed in this paper. The whole deformation process of pipe is modeled and then numerically simulated with FEM software of ABAQUS. The results show that reciprocating bending can eliminate the difference of initial curvature, so that the axial curvature and circumferential curvature are unified to the same direction and value respectively. The synergy between the axial reciprocating bending straightening process and the circumferential reciprocating bending rounding process realizes the calibration process of LSAW pipes. The simulation results support the theoretical results, and the deformation is mainly caused by axial stress and circumferential stress.

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A mechanical model of symmetrical three-roller setting round process: The static bending stage

Cited by 20 publications

References 14 publications

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

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

Intelligent Control System of Internal Expansion over Bending and Calibration (IEOBC) Process for Large Pipe Ends

Deformation Mechanism Analysis of Three-Roller Continuous and Synchronous Calibration Process of Straightness and Roundness For LSAW Pipes

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