... , forging & pressing, bending, extrusion, stretching, die-casting moulds XKS-350 Electro-spark strengthening machineMain specification: Weight:15KG Coating Thickness:60µm ... .Processing speed: Screw diameterProcessing lengthTimeElectrode diameterM310m5min¢3M510m12min¢5 XKS-350 Electro-spark metal surface strengthen machine