Wear of supporting rolls and variation of the ground profile of working rolls of the skin pass mill stand

Metallurgist ◽  
1971 ◽  
Vol 15 (11) ◽  
pp. 770-771
Author(s):  
�. N. Shebanits ◽  
K. N. Savranskii ◽  
N. I. Velikii ◽  
V. G. Nadutov
Keyword(s):  
Skin Pass ◽  
Mill Stand ◽  
Ground Profile ◽  
Pass Mill

scholarly journals Dynamic Control of Flatness and Elongation of the Strip in a Skin Pass Mill

2020 ◽  
Vol 60 (12) ◽  
pp. 2886-2895
Author(s):  
Tomoyoshi Ogasahara ◽  
Takuya Kitamura ◽  
Shin-ichiro Aoe ◽  
Jun-ichi Tateno ◽  
Kazuya Asano
Keyword(s):  
Dynamic Control ◽  
Skin Pass ◽  
Pass Mill

scholarly journals Dynamic Control of Flatness and Elongation of the Strip in a Skin Pass Mill

2019 ◽  
Vol 105 (5) ◽  
pp. 512-521 ◽  
Author(s):  
Tomoyoshi Ogasahara ◽  
Takuya Kitamura ◽  
Shin-ichiro Aoe ◽  
Jun-ichi Tateno ◽  
Kazuya Asano
Keyword(s):  
Dynamic Control ◽  
Skin Pass ◽  
Pass Mill

Numerical Simulation and Analysis for Blow-Off Flow Field of a Wet Skin Pass Mill

2014 ◽  
Vol 597 ◽  
pp. 238-241
Author(s):  
Hai Jun Qiao ◽  
Dian Rong Gao
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Flip Angle ◽  
Strip Surface ◽  
Skin Pass ◽  
Cold Rolled ◽  
Finite Element Numerical Simulation ◽  
Air Nozzle ◽  
Roll Gap ◽  
Pass Mill

Blow-off air nozzles blow away the residual emulsion from roll gap and strip surface. Algorithm SIMPLY were used for the finite element numerical simulation for a representational air nozzle blow-off flow field near the roll gap in a cold-rolled skin pass mill. The working conditions of the blow-off flow field was the combination of gas pressure of 0, 2, 5 and 10bar and flip angle of 0°, 5°, 10°, 15°, 20° and 25°. The study provides a reference for control and optimization for the removal process of residual emulsion and design, manufacture, model selection and optimization for the related air nozzles.

Optimization Technology of Roll Contours during Skin-Pass Rolling Process of Hot-Rolled Strip

2019 ◽  
Vol 944 ◽  
pp. 237-246
Author(s):  
Guang Yi Song ◽  
Xiao Chen Wang ◽  
Quan Yang ◽  
Jian Wei Zhao
Keyword(s):  
Shape Control ◽  
Rolling Process ◽  
Rolled Strip ◽  
Control Effect ◽  
Hot Rolled Strip ◽  
Finite Element Software ◽  
Skin Pass ◽  
Hot Rolled ◽  
Pass Mill ◽  
Work Rolls

The hot-rolled strip skin-pass mill is the important technological equipment of finishing process in the hot rolling plant, and its role is to apply a slight thickness reduction of approximately 1% - 4% to the finished products cooled to room temperature to repair flatness defects and improve the surface quality and mechanical properties. In this study, the initial flat roll contours were optimized to solve some problems such as the serious and non-uniform wear of work rolls and the poor shape control abilities of the strip. A three-dimensional rolls–strip coupling model of hot-rolled strip skin-pass mill was established using the nonlinear finite element software ABAQUS. The effects of the roll contours on the contact pressure between rolls and the control effect of bending forces were analyzed, and a variable contact-length backup roll (VCR) contour configured with a positive crown contour for work rolls was proposed. Compared with the initial flat roll contours, the average replacement cycle of work rolls for the optimized roll contours increased from 465.4 tons to 701.3 tons, the non-uniform wear amount was reduced by nearly 15%, and the adjustment ratio of the negative bending forces decreased from -100% to -40% by industrial experiments in the 1580 mm single-stand four-high hot-rolled strip skin-pass mill.

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