Abstract: It’s a combination optimization problem to optimize many technical parameters in profiles extrusion, and it’s very difficult to solve it using traditional arithmetic algorithm. A computer aided optimization model based on orthographic experiment, artificial neural network and genetic algorithm is built. Using this model and the results from CAD/CAE analysis, a mapping relation between extrusion quality and multi technical parameters is set up, and the difference resulted from different parameters could be predicted, and the best resolution of multi parameters could be obtained. Experimental results show that good accordance has been approved.

Key words: Aluminum profile, Computer aided optimization, Extrusion, Multi parameters, Dissimilar metals, Friction stir welding, Intermetallic compound, Mechanical properties, Steel, Aluminum alloy