A NEW MATHEMATICAL METHOD CONSTITUTING HOT ROLLED TEMPERATURE OF HEAVY AND MEDIUM PLATE FOR PLAIN CARBON STEEL

A new mathematical model constituting temperature schedule was established in or- der to realize flexible rolling of heavy and medium plate,in which the architecture of artificial neuron network (ANN) with optimal ability to predict mechanical properties was first constituted,and then, temperature schedule was constituted by genetic algorithm (GA).It is shown that mechanical prop- erties can be well-predicted by recursive functions and ANN,and the precision predicted by ANN is higher than that by recursive functions.Finishing temperature and final cooling temperature among schedule ones are most important factors for mechanical properties.Mechanical properties calculated by temperature schedule and recursive mechanical-property functions agreed well with desired re- sults.The temperature schedule constituted can be used to produce some steel plates with the same compositions but different strengths.