Effects of entraining velocity of lubricant and sliding velocity on friction behavior in stainless steel sheet rolling

Wang, Zhr Gang; Dohda, Kuni Aki; Luo, Ying She

doi:10.1007/s11771-007-0251-5

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…However, the local sliding distance increased in forward slip zone, and the magnitude increased from 2.2 to 2.9 μm, as shown in Figure 13b. A bigger friction coefficient raised the values of forward slip and the plate's speed at exit section, which agrees with Wang et al [33].…”

Section: Effect Of Friction Coefficient ( F )supporting

confidence: 90%

A Numerical Study on Contact Condition and Wear of Roller in Cold Rolling

Jin

Wang

Jiang

et al. 2017

Metals

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An accurate determination of the contact pressure and local sliding in a cold rolling process is an essential step towards the prediction of the roller's life due to wear damage. This investigation utilized finite element analysis to quantify the local contact pressure and local sliding over the rolling bite in a plate cold rolling process. It was the first study to quantify the local sliding distance in a rolling process using the Finite Element Analysis (FEA). The numerical results indicate that the local contact pressure over the rolling bite demonstrates a hill profile, and the peak coincides with the neutral plane. The local sliding distance over the rolling bite demonstrates a double-peak profile with the two peaks appearing at the forward slip and backward slip zones respectively. The amplitude of sliding distance in the backward slip zone is larger than that in the forward slip zone. A stick zone was confirmed between the forward slip and backward slip zones. According to a parametric study, the local contact pressure and sliding distance decrease when the thickness reduction is reduced or the diameter of the roller is decreased. The location of the neutral plane always presents at the rolling exit side of the rolling bite's center. The size of the stick zone enlarges and the sizes of slip zones shrink significantly when the friction coefficient is increased. Finally, a novel concept of wear intensity was defined to examine the wear of the roller based on the local contact pressure and local sliding distance. The results show that a two-peak wear response exists in the backward and forward slip zones. The magnitude of the wear in the backward slip zone is larger than that in the forward slip zone. For a given roller and blank material combination, using a smaller thickness reduction, a smaller diameter roller and a higher friction coefficient condition can reduce the wear of the roller for a single rolling cycle. The current paper develops an understanding of rolling contact responses to the wear of the roller in rolling process. The research method can also be applied to study other rolling or sliding wear problems.

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Section: Effect Of Friction Coefficient ( F )supporting

confidence: 90%

A Numerical Study on Contact Condition and Wear of Roller in Cold Rolling

Jin

Wang

Jiang

et al. 2017

Metals

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“…Generally speaking lubrication is necessary to reduce friction between sliding parts (roll strip), heat, and roll wear. Nevertheless its presence between roll and strip may affect surface state, since it could hinder the roll to transfer its roughness to the strip or inducing conditions able to produce pit [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Effects of cold rolling process variables on final surface quality of stainless steel thin strip

Mancini

Campana

Sasso

et al. 2011

Int J Adv Manuf Technol

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In cold rolling some surface defects, known as pits, are due to lubricant that, entrapped in the deep valleys of the surface roughness, is nearly incompressible and acts like an inclusion avoiding microcavity elimination. During the rolling process, when specific favorable conditions can be set up, the lubricant may be expelled by the microplasto-hydrodynamic lubrication (MPHL) mechanism and pits may be recovered. In this paper the I >(m) parameter, index of the MPHL, is investigated together with the neutral point position to better understand the practical process recommendations for surface defect recovery. By means of finite element analysis of a Sendzimir'cold rolling process, the sensitivity of these objective functions are studied by means of a design of experiment analysis changing the major process variables like back tension, friction coefficient, reduction parameter, initial thickness, and roll diameter

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Rudiment of ‘galling: Tribological phenomenon’ for engineering components in aggregate with the advancement in functioning of the anti-galling coatings

Kakulite

Kandasubramanian

2019

Surfaces and Interfaces

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Effects of entraining velocity of lubricant and sliding velocity on friction behavior in stainless steel sheet rolling

Cited by 3 publications

References 7 publications

A Numerical Study on Contact Condition and Wear of Roller in Cold Rolling

A Numerical Study on Contact Condition and Wear of Roller in Cold Rolling

Effects of cold rolling process variables on final surface quality of stainless steel thin strip

Rudiment of ‘galling: Tribological phenomenon’ for engineering components in aggregate with the advancement in functioning of the anti-galling coatings

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