Measurements of velocity distributions in the deformation zone in cold rolling by a scanning LDV

2001 ◽  
Vol 35 (1) ◽  
pp. 41-49 ◽  
Author(s):  
E.B. Li ◽  
A.K. Tieu ◽  
W.Y.D. Yuen
Keyword(s):  
Cold Rolling ◽  
Deformation Zone

A simplified mathematical model for total temperature rise calculation in non-oriented silicon steel cold rolling deformation zone

2021 ◽  
Vol 119 (1) ◽  
pp. 104
Author(s):  
Guomin Han ◽  
Hongbo Li ◽  
Yujin Liu ◽  
Jie Zhang ◽  
Ning Kong ◽  
...  
Keyword(s):  
Cold Rolling ◽  
Temperature Rise ◽  
Deformation Zone ◽  
Rolling Force ◽  
Silicon Steel ◽  
Initial Model ◽  
Contact Heat ◽  
Friction Heat ◽  
Total Temperature ◽  
Rolling Deformation

In tandem cold rolling, the control of the temperature of high-grade non-oriented silicon steel is a difficult problem for its large deformation resistance and the preheating procedure before rolling. And it is complicated to calculate the total temperature rise of rolling deformation zone due to the comprehensive influence of the plastic deformation heat, the friction heat and the contact heat loss. So, to precisely calculate the total temperature rise, firstly, based on the four classical cold rolling force formulas, the initial total temperature rise calculation models are established correspondingly by theoretically analyzing the temperature rise of deformation heat, the temperature rise of friction heat and the temperature drop of contact heat loss; then, the model based on the improved Lian rolling force formula is adopted, which leads to calculated best matching the measured temperature; finally, considering the complex formula calculation of the initial model, based on the influences of different rolling parameters on the total temperature rise, a simplified model for convenient calculation is proposed by the nonlinear regression analysis of the initial model calculation results and main rolling parameters, which is convenient for the actual application by the field technicians.

Strain and Friction Effect on the Stress-Strain State in the Deformation Zone during Cold Rolling of Thin Beryllium and Aluminum Foils

2019 ◽  
Vol 822 ◽  
pp. 716-724 ◽  
Author(s):  
Vasiliy V. Mishin ◽  
Ivan A. Shishov ◽  
Vladimir V. Paromov
Keyword(s):  
Friction Coefficient ◽  
Cold Rolling ◽  
Deformation Zone ◽  
Strain State ◽  
Hydrostatic Stress ◽  
Stress Triaxiality ◽  
Fracture Prevention ◽  
Stress Strain ◽  
Stress Strain State ◽  
Contact Arc

The effect of strain and the friction on the stress-strain state in the deformation zone during cold rolling of thin beryllium and aluminum foils was investigated in this work. Calculations showed that material hardening has a significant influence on the contact pressure distribution along the contact arc. Although it, the distributions of hydrostatic stress and stress triaxiality are favorable for fracture prevention both beryllium and aluminum except narrow regions near the entrance and the exit of deformation zone for all considered cases (strain up to 40%, friction coefficient in range 0.03 – 0.3). The most favorable stress state is observed during cold rolling with a high friction coefficient (rolling without lubrication).

Applicability of the laws of elasticity for the determination of the elastic-region length in the deformation zone during cold rolling

2008 ◽  
Vol 2008 (3) ◽  
pp. 205-209 ◽  
Author(s):  
E. A. Garber ◽  
D. L. Shalaevskii ◽  
I. A. Kozhevnikova ◽  
A. I. Traino
Keyword(s):  
Cold Rolling ◽  
Deformation Zone ◽  
Elastic Region ◽  
Region Length

Frictional-Stress Distribution in the Deformation Zone on Cold Rolling

2018 ◽  
Vol 48 (7) ◽  
pp. 454-457
Author(s):  
I. A. Kozhevnikova ◽  
N. L. Bolobanova ◽  
V. S. Yusupov ◽  
A. V. Kozhevnikov ◽  
E. N. Kroitor
Keyword(s):  
Stress Distribution ◽  
Cold Rolling ◽  
Deformation Zone ◽  
Frictional Stress

Improvement of numerical methods of contact stress calculation during cold rolling of band

2020 ◽  
Vol 0 (10) ◽  
pp. 58-61
Author(s):  
K. V. Ilyin ◽  
◽  
G. L. Baranov ◽  
Keyword(s):  
Numerical Methods ◽  
Cold Rolling ◽  
Contact Stress ◽  
Contact Surface ◽  
Deformation Zone ◽  
Rolling Force ◽  
Surface Shape ◽  
Stress Calculation ◽  
Billet Material ◽  
Strain Strengthening

The influence of a contact surface shape of the deformation zone during cold rolling of a band on the rolling force subject to parameters of the strain strengthening curve of billet material and band tension has been studied by numerical methods. The comparison of the obtained results and well-known ones allowed one to set that in case of the presense of strain strengthening, the replacement of the arc of contact by the chord resulted in a decrease in calculated force of rolling, whose value depends on the presence of the fore tension and the back tension and parameters of strain strengthening of metal.

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