Experimental rolling of ingots in pairs on the slabbing mill

Metallurgist ◽  
1961 ◽  
Vol 5 (8) ◽  
pp. 378-378
Author(s):  
L. V. Andreyuk
Keyword(s):  
Slabbing Mill ◽  
Experimental Rolling

scholarly journals Tire/Road Rolling Resistance Modeling: Discussing the Surface Macrotexture Effect

Coatings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 538
Author(s):  
Malal Kane ◽  
Ebrahim Riahi ◽  
Minh-Tan Do
Keyword(s):  
Slip Rate ◽  
Rolling Resistance ◽  
Friction Model ◽  
Slip Rates ◽  
Wide Range ◽  
Road Surfaces ◽  
Profile Depth ◽  
Experimental Rolling ◽  
Resistance Modeling ◽  
Pavement Friction

This paper deals with the modeling of rolling resistance and the analysis of the effect of pavement texture. The Rolling Resistance Model (RRM) is a simplification of the no-slip rate of the Dynamic Friction Model (DFM) based on modeling tire/road contact and is intended to predict the tire/pavement friction at all slip rates. The experimental validation of this approach was performed using a machine simulating tires rolling on road surfaces. The tested pavement surfaces have a wide range of textures from smooth to macro-micro-rough, thus covering all the surfaces likely to be encountered on the roads. A comparison between the experimental rolling resistances and those predicted by the model shows a good correlation, with an R2 exceeding 0.8. A good correlation between the MPD (mean profile depth) of the surfaces and the rolling resistance is also shown. It is also noticed that a random distribution and pointed shape of the summits may also be an inconvenience concerning rolling resistance, thus leading to the conclusion that beyond the macrotexture, the positivity of the texture should also be taken into account. A possible simplification of the model by neglecting the damping part in the constitutive model of the rubber is also noted.

Measurement of the Interfacial Stresses in Rolling Using the Elastic Deformation of the Roll

1987 ◽  
Vol 109 (4) ◽  
pp. 362-369 ◽  
Author(s):  
D. J. Meierhofer ◽  
K. A. Stelson
Keyword(s):  
Elastic Deformation ◽  
Normal Pressure ◽  
New Method ◽  
Frictional Stress ◽  
Stress Distributions ◽  
Strain Gages ◽  
Experimental Rolling ◽  
Mechanical Isolation ◽  
Roll Gap ◽  
Future Work

A new method to measure the frictional stresses and normal pressure in the roll gap during cold rolling, and experimental verification of this new method, are presented. The method overcomes many of the shortcomings of pin-type sensors. The elastic deformation of the roll itself is measured with strain gages, and is used to calculate the stresses between the sheet and the roll. Since no modification of the roll is necessary, the deformation process is undisturbed by the measurement. Mechanical isolation of the sensor is unnecessary. The mathematical procedure used to calculate the normal pressure and frictional stresses from the measured strains explicitly acknowledges that these strains are the result of the entire distribution of pressures and shears in the roll gap. An experimental rolling mill was constructed to verify the proposed method. Lead was rolled, and the resulting pressure and frictional stress distributions in the roll gap were measured. Several features of these distributions are in agreement with measurements made by various investigators using other techniques, thereby confirming the usefulness of the new method. Future work is proposed to increase the accuracy with which the roll gap stresses may be measured.

Visioplastic analysis of experimental rolling of steel

2001 ◽  
Vol 215 (3) ◽  
pp. 155-163
Author(s):  
M G Rodríguez-Rodríguez ◽  
E Valdés-Covarrubias ◽  
P C Zambrano ◽  
M P Guerrero-Mata ◽  
R Colás
Keyword(s):  
Experimental Rolling

scholarly journals Forming Features and Properties of Titanium Alloy Billets After Radial-Shear Rolling

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3179 ◽  
Author(s):  
Skripalenko ◽  
Galkin ◽  
Vladimirovich Karpov ◽  
Romantsev ◽  
Kaputkina ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Titanium Alloy ◽  
Rolling Mill ◽  
Stress Triaxiality ◽  
Grain Structure ◽  
Structure Changes ◽  
Ring Shape ◽  
Accumulated Strain ◽  
Experimental Rolling ◽  
Radial Shear Rolling

Radial-shear rolling (RSR) of titanium alloy billets was realized in a three-high rolling mill. Experimental rolling was simulated using DEFORM software. The purpose was to reveal how stress-strain state parameters, grain structure and hardness vary along the billet’s radius in the stationary stage of the RSR process. It was also the goal to establish a relation between stress state parameters, hardness and grain structure. Changes in the accumulated strain and the stress triaxiality were established by computer simulation. Hardness and grain size changes were obtained after experimental rolling. The novelty aspect is that both computer simulation and experimental rolling showed that there is a ring-shape area with lowered strength in the billet’s cross-section. The radius of the ring-shape area was predicted as a result of the research.

Optimizing the schedule for ingot transfer from the open-hearth shop to the slabbing mill

Metallurgist ◽  
1987 ◽  
Vol 31 (1-2) ◽  
pp. 16-18
Author(s):  
O. I. Romanov ◽  
G. D. Molonov ◽  
I. P. Chernyavskii ◽  
E. N. Gadzhi ◽  
V. S. Voroshilin
Keyword(s):  
Open Hearth ◽  
Slabbing Mill ◽  
Open Hearth Shop

scholarly journals Analysis of pipe piercing on PRP 70-270 with FEM modeling

2020 ◽  
Vol 63 (10) ◽  
pp. 848-855
Author(s):  
D. A. Orlov ◽  
A. V. Goncharuk ◽  
O. A. Kobelev ◽  
O. G. Komarnitskaya ◽  
N. S. Bunits
Keyword(s):  
Friction Factor ◽  
Rolling Process ◽  
Point Of View ◽  
Hot Metal ◽  
Fem Modeling ◽  
Power Increase ◽  
Roll Mill ◽  
Experimental Rolling ◽  
Simulation Results

The article analyzes the piercing and rolling process of seamless pipes on PRP 70-270 of JSC “VMP” in terms of power parameters, piercing time and geometric sizes of pipes. The research results were compared with the results of computer simulation on software package QFORM 3D. For simulation, the deformation zones were designed for piercing a mold tube with dimensions of 203×16.5 mm in one pass on a mandrel with diameter of 162 mm and in two passes of piercing and rolling-off on mandrels with diameter of 76 and 162 mm, respectively. From the obtained data on the power parameters, it was found that from the point of view of energy consumption, piercing in one pass seems more appropriate. However, when piercing in one pass, wear resistance of the mandrels sharply decreases, since the contact time between the tool and the hot metal increases. This leads to a decrease in quality of the pipes’ inner surface, more frequent replacement of the tool and increased downtime of the equipment. During simulation, the selected parameter of the friction factor has a significant impact on the value of power parameters (torque and power consumption) and piercing time. The dependences of changing power parameters and piercing time on the friction factor during piercing in a two-roll mill with guards are obtained. With increase of the friction factor, piercing time decreases and torque and rolling power increase. The simulation results are correlated with results of experimental rolling. With a correctly chosen value of the friction factor, power parameters and geometry of the mold tube can be quite accurately predicted by computer modeling.

Simulation and Implementation of AGC on Hille 100 Experimental Rolling Mill

2011 ◽  
Vol 4 (4) ◽  
pp. 1717-1723 ◽  
Author(s):  
Xiaofeng He ◽  
Zhengyi Jiang ◽  
Christopher Cook ◽  
Yinshui Liu
Keyword(s):  
Rolling Mill ◽  
Experimental Rolling
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