Quality of seamless hot-rolled pipe, taking account of mandrel oscillations

Danchenko, V. N.; Rakhmanov, S. R.

doi:10.3103/s0967091209010185

Cited by 2 publications

(1 citation statement)

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“…Zhao et al [14] have calculated the friction coefficient between the rolled piece and the mandrel in a Fully-floating mandrel mill and observed that this coefficient displayed a rising trend along the rolling direction. V. N. Danchenko and S. R. Rakhmanov [15] have established a mathematical model for the rod system in the mandrel-retention mechanism, which considers the oscillations conditions of the mandrel. Toporov et al [16] have used a finite element simulation program to study the impact of mandrel deviation from the rolling axis on the shape of pipes and metal fracture.…”

Section: Introductionmentioning

confidence: 99%

Research on the impact of mandrels in titanium tubes during tube continuous rolling

Li,

Shuang,

Chen

et al. 2023

Mater. Res. Express

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Tube continuous rolling (TCR) is a beneficial method for the production of titanium pipes due to its high efficiency and shorter process, with the mandrel playing a crucial role. In this study, the mechanism of the mandrel and its influence on the TCR process were investigated in detail through numerical simulations and experimental tests. The analysis included a detailed examination of metal slip, tension, stress-strain field, temperature field, metal flow, and microstructure evolution for various mandrel diameter coefficient. As the mandrel diameter coefficient increases, the grains at the groove vertex are elongated and recrystallized grains appear. At the same time, the quantity of twins at the groove taper initially increases and then decreases. Therefore, the deformation mechanism at the groove taper changes from twinning to slip.

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Section: Introductionmentioning

confidence: 99%