e microstructure and property of electrospark surface strengthening layers of two different parent metals were inverstingated using optical metalogryphy, scanning electron microscope ( SEM) , mircohardness and wear resistance testing. The result showed that the microhardness,finish and time of strengthening layers related to parameter of strengthening technology. The same technology parmeter, strengthening layers of high carbon parent metals with high microhardness and good were - resistance can b...

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