By measuring the temperature of a lost foam casting ductile ladder casting during the solidification process

the actual casting cooling curves were presented.Based on reverse principle

a series of orthogonal experiments were conducted to obtain the simulation cooling curves based on casting simulation software InteCast CAE.By the method of error analysis

comparing the casting cooling curves obtained by the orthogonal experiments to the ones from actual temperature measuring experiment

the most similar casting cooling curve was adopted to determine the thermophysical parameters of the alloy.Orthogonal simulation experiment results show that

at 800

1

300 ℃

casting temperature curves obtained by reverse technology are well agreement with the actual ones

and the error is less than 5%.Using the parameters obtained by orthogonal simulation experiment and previous ones to simulate the casting defects

respectively

the simulation results of the former are more in line with the actual situation

and it is verified through the casting slice experiment.