Numerical simulation and experimental study on the multi-step upsetting of a thick and wide flange on the end of a pipe

Hu, Xiu Li; Wang, Z.R.

doi:10.1016/j.jmatprotec.2004.04.081

Cited by 16 publications

(11 citation statements)

References 1 publication

(1 reference statement)

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“…In turn, MacCormack et al employed the upsetting technique to form a spline shape on the head of an aerospace fastener [9]. Hu et al used multistage upsetting to form a relatively large diameter flange on the end of a pipe [10]. Quan et al also studied the multistage upsetting process [11].…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of a Six Stage Forging Process for Producing Hollow Flanged Parts from Tubular Blanks

Winiarski¹,

Bulzak²,

Wójcik³

et al. 2020

Adv. Sci. Technol. Res. J.

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This paper presents the results of a numerical analysis of a cold forging process for a hollow flanged part. The analysis was performed using Deform 2D/3D. 42CrMo4 steel tubes were used as the billet material, and their material model in the annealed state was described by a constitutive equation. The forming process was performed in six stages with the use of methods such as extrusion with a movable sleeve, open-die extrusion, and upsetting. The objective of the study was to determine whether the proposed forging technique could be used to produce hollow parts with flanges. The determination was made based on the analysis of product geometry quality and process parameters, including the Cockcroft-Latham ductile fracture criterion and forming forces.

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Section: Introductionmentioning

confidence: 99%

Numerical Analysis of a Six Stage Forging Process for Producing Hollow Flanged Parts from Tubular Blanks

Winiarski¹,

Bulzak²,

Wójcik³

et al. 2020

Adv. Sci. Technol. Res. J.

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show abstract

“…This failure mode can be prevented e.g. by the application of multi-step upsetting [5]. The flange formed by multi-step upsetting is higher and has a bigger diameter than that produced by single-step upsetting.…”

Section: Introductionmentioning

confidence: 99%

Effect of Tool Kinematics on Tube Flanging by Extrusion with a Moving Sleeve

Winiarski¹,

Bulzak²,

Wójcik³

et al. 2019

Adv. Sci. Technol. Res. J.

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This paper presents the results of a numerical investigation into tube flanging by extrusion with a moving sleeve. Two cases of the extrusion process are investigated, each described with a different tool kinematics. Effects of flange diameter, gap height and tool motion on the extrusion process are examined. The numerical analysis is performed on 42CrMo4 steel tubes deformed at ambient temperature. Obtained numerical results are then used to determine metal flow patterns and examine force parameters in the extrusion process, as well as to determine a technological window for the investigated method.

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“…However, the other connecting method are required from a viewpoint of making the plant environment worse by welding. Therefore, flaring process [2] of large diameter pipes were proposed. This flaring process is one of a method of pipe flange forming.…”

Section: Introductionmentioning

confidence: 99%