Edge geometry of pipe blanks produced by JCOE flexure

Samusev, S. V.; Zhigulev, G. P.; Fadeev, V. A.

doi:10.3103/s0967091217050114

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…It is difficult to design technical parameters and control the forming quality. Early engineering technicians used classical bending theory to analyze the crimping process [2]. Shabalov et al [3] described the entire process of crimping technique and summarized the reasonable range of various technical parameters.…”

Section: Introductionmentioning

confidence: 99%

The analytical model of crimping springback for large-diameter longitudinal welded pipe

Zhang,

Sun

2024

J. Eng. Appl. Sci.

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The crimping technique is widely used in the manufacturing process of large-diameter longitudinal welded pipe. In the bending process, the springback is the critical problem affecting the shape, which is the key index of forming quality. So, crimping faces more challenges in accurate springback prediction for difficult-to-form metals such as pipeline steels and non-circular nature of the punch. This paper has established an analytical model of crimping springback for the longitudinal welded pipe. Firstly, the crimping process mathematical model which considered the impact of elastic modulus attenuation on springback calculation during plastic deformation is established, and the cross-section bending moment is calculated based on Hill’s bending theory. Secondly, a semi-analytical and semi-numerical method for calculating the crimping shape is presented. Finally, the comparison of the crimping shape of the real product shows that the calculation accuracy and efficiency of this method can meet the requirements of engineering applications. The relative error of the springback angle calculated by the analytical model is −5.84%, and the absolute error is 0.3°. This method can accurately predict the springback of longitudinal welded pipe after crimping and provide a reference for crimping process optimization.

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Section: Introductionmentioning

confidence: 99%

The analytical model of crimping springback for large-diameter longitudinal welded pipe

Zhang,

Sun

2024

J. Eng. Appl. Sci.

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“…These pipes manufacturing process shall ensure manufacture of high quality products. The basic requirements for steel pipes are the dimensions accuracy [9][10][11] and a certain product specification level [12]. For this purpose, unique equipment is to be used and new wear resistant materials for the deformation tool are to be developed [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Seamless Pipes Manufacturing Process Improvement Using Mandreling

Гончарук¹,

Fadeev²,

Kadach³

2021

SSP

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The paper discusses the specific aspects of hot rolled seamless pipes manufacture using pipe rolling plants including screw-rolling mills. The method of accuracy enhancement of pipe dimensions, as well as external and internal surface quality improvement, is proposed. The article specifies the results of computer and physical modeling of the pipes mandreling process. The application of the mandreling process within the cage using different diameter mandrels is shown. We managed to decrease the typical mark caused by the metal deformation, due to the screw-rolling mill and to manufacture pipes with more accurate dimensions, as a result of the mandreling process modeling. The results of the physical experiment on mandreling the shell pierced at the screw-rolling mill showed a positive effect from the process of hollow billet cold treatment using the mandrel.

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