COMPUTACIONAL ANALYSIS OF THE COOLING
OF ROLLS USED IN THE TRANSPORT OF
SLABS FROM CONTINUOUS CASTING
Leonardo Camilo dos Reis
Luiz Otávio Rocha Peres
Manoel Gomes de Souza Neto
PRESENTATION TOPICS
• Company Overview;
• Problem Description;
• Methodology;
• Goals;
• Conclusion.
COMPANY OVERVIEW
USIMINAS CORPORATION
USIMINAS SYSTEM
HEADQUARTERS
IPATINGA MILL
MECÂNICA USIMINAS
CUBATÃO MILL
MAIN PRODUCTS
SLABS
PLATE MILL
COLD MILL STRIP
HOT MILL COILS
COLD MILL COILS
HOT MILL STRIP
GALVANIZED (HDG/EG)
COILS
MAIN PLANTS LOCATION
BAHIA
MINAS GERAIS
Ipatinga
Usiminas
Belo Horizonte
Porto de
Praia Mole
Vitória
SÃO PAULO
RAILWAY
HIGHWAY
São Paulo
Cosipa
Cubatão
Rio de Janeiro
Porto de Sepetiba
Santos
PROBLEM DESCRIPTION
STEELSHOP
PROBLEM DESCRIPTION
Continuous Casting Machines
Roll
GOALS
GOALS
To evaluate different configurations of internal
cooling of the rolls in order to determine which
is the most efficient.
METHODOLOGY
METHODOLOGY
Three-dimensional numerical models were
developed using the finite volume technique
with the resources available in commercial
softwares to simulate different configurations of
the roll´s internal cooling. Four different cooling
designs were modeled in order to determine the
most thermal efficient configuration.
METHODOLOGY
Designs
Configuration
3D MODEL
ROLL MODEL
FLOW MODEL
BOUNDARY CONDITIONS
RESULTS AND
ANALYSIS
RESULTS – Temperature Gradient
Case 1
Case 3
Case 2
Case 4
ANALYSIS
Lines to evaluate the Temperature Gradient
Line 1
Line 2
Case 2
Case 3
Case 4
ANALYSIS
Temperature profile along the line 1
ANALYSIS
Temperature profile along the line 2
CONCLUSION
CONCLUSION
From the results obtained through computer
simulation, it was found that, for the same flow of
water and heating the same condition, the scroll
design with cooling configuration of Case 1 is the
best because it has a cooling system internal more
efficient, obtaining a smaller temperature gradient.
CONCLUSION
A smaller temperature gradient values ​means lower
thermal stresses and hence a smaller variation of the
mechanical stresses and strains.
By reducing this cycle variation or magnitude of the
stresses, we obtain a greater fatigue life with a
consequent increase in the durability of the roller. This
translates into lower costs and replacement costs
associated with shutdowns caused by failures
Thank you for your attention!!!
Any questions?