圆-椭圆-圆辊道的优化设计.pdf

1、CLASSIFICATION C1-INTERNALOptimal design of round-oval-roundroll passelmarakbysteelreinforcing life.Optimal design of round-oval-round roll passEng.Mostafa RashadRolling mill plant managerR&D managerreinforcing life.reinforcing life.Bar Rolling Processreinforcing life.reinforcing life.Bar Rolling Pr

2、ocessOne machine/day =House for 6 months to 1 yearIntensive energy consumption processreinforcing life.reinforcing life.Bar Rolling ProcessWhat does the optimum roll pass design mean?(Optimal maximum area reduction ratio)Minimum machine quantityReducing the CAPEX cost SmallerFewer(Optimal minimum ro

3、lling torque)Minimum machine size and energy consumptionReducing the running cost reinforcing life.reinforcing life.Maximizing area reduction ratioSmallerFewerMinimizing rolling torqueStudy ObjectivesOptimization Problem Objectivesreinforcing life.reinforcing life.Rolling pass sequenceSquare-Diamond

4、-SquareRound-Oval-Roundreinforcing life.reinforcing life.Output RoundInput RoundIntermediate OvalRound-Oval-Round PassProbable OvalsRequired perfect shapereinforcing life.reinforcing life.Output RoundInput RoundIntermediate OvalFeasible OvalsRound-Oval-Round Passreinforcing life.reinforcing life.Out

5、put RoundInput RoundIntermediate OvalUnder FillUn-feasible OvalsRound-Oval-Round PassOver FillLarge Bite Anglereinforcing life.reinforcing life.Output RoundInput RoundIntermediate OvalOptimal OvalRound-Oval-Round PassAccepted shape+Optimal torque and reduction ratioreinforcing life.reinforcing life.

6、Optimization Problem FormulationBite angleUnderfillOver fillConstraintsDesign Parameters Oval geometry Radius Depth Objectives Minimizing the rolling torque Maximizing the area reduction ratioreinforcing life.reinforcing life.Challenges2 21 1Accurate Rolling Process ModellingFinding the Optimal Solu