Thermo-Mechanical Analysis of Piercing Plug Loads in the Skew Rolling Process of Thick-Walled Tube Shell

Pater, Z.; Kazanecki, J.

doi:10.7494/mafe.2006.32.1.31

Cited by 8 publications

(6 citation statements)

References 7 publications

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“…Plugs are utilized during the entire piercing process without any external cooling and must maintain their physical properties to withstand high tensile strains and temperatures. (5) Fig. 5: Contact pressure on a plug during piercing (5) Measurements of plug lifetime displayed in Figure 6 below show a significant drop in plug lifetime after 2020.…”

Section: Introductionmentioning

confidence: 99%

AUMENTO DA VIDA ÚTIL DAS PONTAS DE PERFURAçãO ATRAVéS DA MELHORIA DO RESFRIAMENTO DE PONTAS NO LAMINADOR PERFURADOR DA VALLOUREC JECEABA

Ferraz,

Elias,

Vay

et al. 2023

ABM Proceedings

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The seamless tube rolling process consists of 3 main steps: heating, piercing, and elongation. Billet piercing is a process developed by the Mannesmann company more than 100 years ago. This manufacturing process produces tubes that are pierced from steel billets and rolled into a hollow form. In a piercing mill, heated billets are pierced using a piercing plug. The diameter reduction of the rolled billets creates a tension at their center that generates an inner hole and transforms the billets into tubes. A piercing plug shaped like a bullet is placed precisely to control the dimensions of the forming tube and to avoid cracks and other inner surface defects. The high forces and temperatures at this stage of the process require that the piercing plug maintain its physical properties and remain wear resistant. After piercing, the plugs are cooled and remain in the circuit to pierce a new billet after 2-3 minutes. Plug lifetime at Vallourec Jeceaba suffered a severe reduction after a mill modification. An improvement to the plug's cooling system was made and tested. This paper aims to study the effects of cooling on plug lifetime, present the improvements made to the cooling process and review the results of this modification.

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Section: Introductionmentioning

confidence: 99%

AUMENTO DA VIDA ÚTIL DAS PONTAS DE PERFURAçãO ATRAVéS DA MELHORIA DO RESFRIAMENTO DE PONTAS NO LAMINADOR PERFURADOR DA VALLOUREC JECEABA

Ferraz,

Elias,

Vay

et al. 2023

ABM Proceedings

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“…The calculations, performed in MSC SuperForm software, were the first to include heat phenomena that occur in the product. The aforementioned model was developed by Pater and Kazanecki [13] and further on used in the analysis of load of the piercing plug, modelled as an elastic object. As a result of the calculations changes in temperature of the piercing plug during the rolling process as well as distribution of surface pressure were observed.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Tube Piercing Processes in the Two-Roll and Three-Roll Mills

Pater¹,

Wójcik²,

Walczuk³

2019

Adv. Sci. Technol. Res. J.

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The article presents a comparison of the piercing process conducted in a two-roll Diescher mill and a three-roll mill. The comparative analysis was based on the numerical simulations of the aforementioned processes, obtained using Forge NxT 1.1. software. It was stated that the most favourable manufacturing method is skew rolling in three-mill rolling mills. The mills operating in this scheme are less energy-consuming, whereas the manufacturing time is 30% shorter.

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“…Pater et al [13] studied skew rolling with three tapered rolls for producing long main shafts of steel using the commercial FEM simulation software suite Simufact Forming v.12. They also studied the tube forming process in Diescher's mill [14], and the thermo-mechanical piercing process using the commercial software MSC SuperForm 2005 [15]. Stefanik et al [16] studied the three-high skew process for producing aluminum bars using the Forge 2011 ® software.…”

Section: Introductionmentioning

confidence: 99%

Deformation Behavior and Experiments on a Light Alloy Seamless Tube via a Tandem Skew Rolling Process

Mao¹,

Wang

Shuang

et al. 2019

Metals

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As a process for producing seamless tubes, the tandem skew rolling (TSR) process was proposed. In order to study deformation characteristics and mechanism on tubes obtained by the TSR process, a numerical simulation of the process was analyzed using Deform-3D software. Simulation results demonstrated the distribution of stress, strain, velocity, and temperature of a seamless tube in the stable stage during the TSR process. Actual experiments of carbon steel 1045, high strength steel 42CrMo, and magnesium alloy AZ31 were carried out in a TSR testing mill. The results demonstrated that the TSR process is qualified for producing tubes of high quality, with an accuracy of ±0.2 mm in wall thickness and ±0.35 mm in diameter. This process is suitable for manufacturing seamless tubes that are difficult to deform or that have been deformed in a narrow range of temperature.

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Thermo-Mechanical Analysis of Piercing Plug Loads in the Skew Rolling Process of Thick-Walled Tube Shell

Cited by 8 publications

References 7 publications

AUMENTO DA VIDA ÚTIL DAS PONTAS DE PERFURAçãO ATRAVéS DA MELHORIA DO RESFRIAMENTO DE PONTAS NO LAMINADOR PERFURADOR DA VALLOUREC JECEABA

AUMENTO DA VIDA ÚTIL DAS PONTAS DE PERFURAçãO ATRAVéS DA MELHORIA DO RESFRIAMENTO DE PONTAS NO LAMINADOR PERFURADOR DA VALLOUREC JECEABA

Comparative Analysis of Tube Piercing Processes in the Two-Roll and Three-Roll Mills

Deformation Behavior and Experiments on a Light Alloy Seamless Tube via a Tandem Skew Rolling Process

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