The Technique Study on Silicon Brass Recrystallization Annealing Aided by Electric Pulse Treatment

An online production technique was designed and automated for control system of the three-phase induction motor based on programmable logic controller (PLC) technology and a simplified system was used to carry out a material testing. The microstructure morphologies were observed by the optical microscopy and hardness test. The results have shown that electric pulse treatment significantly accelerated the recrystalliazation annealing of HSi65-1.5 alloy due to the short treating time, high heating rate and accelerated nucleation and lower final dislocation density and the optimum parameters where found to be annealing at 300°C, pulse voltage of 700V, pulse frequency of 15Hz and pulse time of 120s.