| In order to improve the surface quality and reduce the edge burrs, the ffects of current, pulse width and pulse spacing on the machining effect of PtIr alloy WIM were studied. The results show that the machining parameters have an important effect on the surface roughness and edge burr of the material. The machining parameters of wire electrical discharge machining(WEDM) were optimized, the current was 5 A, the pulse width was 5μs, the pulse distance was 5 μs, the machining speed was 150 steps/S, the diameter of molybdenum wire was 0.1 mm, the surface roughness Ra was 0.14 μm, and the cutting precision tolerance reached ±0.006 mm. |