Effect of steel composition on failure of oxide scales in tension under hot rolling conditions

2001 ◽  
Vol 72 (7) ◽  
pp. 250-258 ◽  
Author(s):  
Kim Soong Tan ◽  
Michal Krzyzanowski ◽  
John H. Beynon
Keyword(s):  
Hot Rolling ◽  
Oxide Scales ◽  
Steel Composition ◽  
Hot Rolling Conditions

Examination of Oxide Scales Formed During Hot Rolling of Steels

2019 ◽  
Vol 56 (7) ◽  
pp. 449-456
Author(s):  
T. Höfler ◽  
H. Danninger ◽  
B. Linder
Keyword(s):  
Hot Rolling ◽  
Oxide Scales

Effect of the Si and Al Content in Ferritic Electrical Steels on the Flow Behaviour and Dynamic Softening in Hot Rolling

2013 ◽  
Vol 762 ◽  
pp. 747-752
Author(s):  
Pablo Rodriguez-Calvillo ◽  
M. Perez-Sine ◽  
Jürgen Schneider ◽  
Harti Hermann ◽  
Jose María Cabrera ◽  
...  
Keyword(s):  
Hot Rolling ◽  
Flow Behaviour ◽  
Flow Curves ◽  
Electrical Steels ◽  
Al Content ◽  
Wide Range ◽  
Dynamic Softening ◽  
Hot Rolling Conditions ◽  
Hardening And Softening

FeSi steels with and without addition of Al are widely used as electrical steels. To improve the knowledge of the effects by the addition of Si and Al on the hardening and softening under hot rolling conditions, the behaviour of the flow curves in a wide range of temperatures and deformation velocities have been studied.

Effect of the Temperature–Speed Hot-Rolling Conditions on Scale Formation

2021 ◽  
Vol 2021 (13) ◽  
pp. 1766-1770
Author(s):  
S. I. Platov ◽  
R. R. Dema ◽  
O. R. Latypov ◽  
V. S. Banshchikov ◽  
V. A. Mustafin ◽  
...  
Keyword(s):  
Hot Rolling ◽  
Scale Formation ◽  
Hot Rolling Conditions

scholarly journals Effect of Hot Rolling Conditions on Annihilation of Porosities in Continuous Casting Slabs

1980 ◽  
Vol 66 (2) ◽  
pp. 201-210 ◽  
Author(s):  
Naoki OKUMURA ◽  
Takeshi KUBOTA ◽  
Tadakatu MARUYAMA ◽  
Michihiko NAGUMO
Keyword(s):  
Continuous Casting ◽  
Hot Rolling ◽  
Effect Of Hot Rolling ◽  
Hot Rolling Conditions

Modelling the Spalling of Oxide Scales During Hot Rolling of Steel Strip

2008 ◽  
Vol 70 (3-4) ◽  
pp. 137-148 ◽  
Author(s):  
Maribel de la Garza ◽  
Alfredo Artigas ◽  
Alberto Monsalve ◽  
Rafael Colás
Keyword(s):  
Hot Rolling ◽  
Steel Strip ◽  
Oxide Scales

scholarly journals Characterization of Roll Bite Heat Transfers in Hot Steel Strip Rolling and their Influence on Roll Thermal Fatigue Degradation

2013 ◽  
Vol 554-557 ◽  
pp. 1555-1569 ◽  
Author(s):  
Nicolas Legrand ◽  
Daniel Weisz-Patrault ◽  
Jaroslav Horský ◽  
Tomáš Luks ◽  
Nathalie Labbe ◽  
...  
Keyword(s):  
Heat Flux ◽  
Transfer Coefficient ◽  
Thermal Fatigue ◽  
Hot Rolling ◽  
Temperature Sensor ◽  
Roll Surface ◽  
Degradation Model ◽  
Heat Transfers ◽  
Hot Rolling Conditions ◽  
Roll Bite

A temperature sensor with a thermocouple placed at ~0.5 mm from roll surface is used in hot rolling conditions to evaluate by inverse calculation heat transfers in the roll bite. Simulation analysis in industrial hot rolling conditions with short contact lengths (e.g. short contact times) and high rolling speeds (7 m./sec.) show that the temperature sensor + inverse analysis with a high acquisition frequency (> 1000 Hz) is capable to predict with a good accuracy (5 to 10% error) the roll bite peak of temperature as well as the roll surface temperature evolution all around the roll rotation. However as heat flux is more sensitive to noise measurement, the peak of heat flux in the bite is strongly under-estimated (40% error) by the inverse calculation and thus only an average roll bite heat flux could be expected from the sensor (these simulation results will be verified with an industrial trial that is being prepared). Rolling tests on a pilot mill with low rolling speeds (from 0.3 to 1.5 m./sec.) and strip reductions varying from 10 to 40% have been performed with the temperature sensor. Analysis of the tests by inverse calculation show that at low speed (<0.5 m="" sec="" and="" large="" contact="" lengths="" reduction:="" 30="" to="" 40="" the="" roll="" bite="" peak="" of="" heat="" flux="" reconstructed="" by="" inverse="" calculation="" is="" correct="" at="" higher="" speeds="" 1="" 5="" smaller="" reduction="" :="" 10-20="" reconstruction="" incorrect:="" in="" under-estimated="" though="" its="" average="" value="" analysis="" reveals="" also="" that="" transfer="" coefficient="" htc="" sub="">roll-bite (characterizing heat transfers between roll and strip in the bite) is not uniform along the roll bite but is proportional to the local rolling pressure. Finally, based on the above results, simulations with a roll thermal fatigue degradation model in industrial hot rolling conditions show that the non uniform roll bite Heat Transfer Coefficient HTCroll-bite may have in certain rolling conditions a stronger influence on roll thermal fatigue degradation than the equivalent (e.g. same average) HTCroll-bite taken uniform along the bite. Consequently, to be realistic the roll thermal fatigue degradation model has to incorporate this non uniform HTCroll-bite.

Effect of hot-rolling conditions on the tensile properties of multiphase steels exhibiting a TRIP effect

2002 ◽  
Vol 73 (6-7) ◽  
pp. 280-286 ◽  
Author(s):  
Stéphane Godet ◽  
Philippe Harlet ◽  
Francis Delannay ◽  
Pascal J. Jacques
Keyword(s):  
Tensile Properties ◽  
Hot Rolling ◽  
Trip Effect ◽  
Effect Of Hot Rolling ◽  
Hot Rolling Conditions ◽  
Multiphase Steels
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