A8 tool steel is often used in wire electrical discharge machining (WEDM) to make various stamping dies and drawing dies. The discharge parameters of WEDM equipment affect the surface properties of materials after processing. In this paper, the surface properties of materials including surface hardness, surface roughness and friction factor are studied when the A8 tool steel is processed by different discharge parameters (processing current, pulse width, pulse interval). The results show that the influence of discharge parameters on the surface properties of materials processed are as follows: processing current >pulse width> pulse interval; to obtain a balanced processing surface quality, a combination of parameters of processing current 2.5A, pulse width 16μs, and pulse interval 8μs can be used.

WANG Lei, LI Shan, HUANG Zhi-wei. Effect of Discharge Parameters on Surface Properties of A8 Tool Steel by Wedm. Academic Journal of Engineering and Technology Science (2020) Vol. 3 Issue 6: 14-26. https://doi.org/10.25236/AJETS.2020.030603.

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