Research on the Fatigue of Small Impulse Turbine Blade Based on the Numerical Simulation and Experimental Tests

Table 1

Performances of GW735.

Item	Value
Maximum machining efficiency(copper-steel)	400 mm^3/min
Peak current	64 A
The best surface roughness	Ra 0.2
Minimum electrode wear	0.1%
Pulse power type	Isopulse power during discharge

Note that the roughness of Ra0.2 cannot be achieved by using 64 A current. In fact, the data in Table 1 are the limit performance index of GW735, which means the maximum current of the equipment can reach 64 A, and the maximum processing efficiency can reach 400 mm³/min under certain conditions, and the best surface roughness can reach Ra0.2 under another condition. Instead of using the same electrode, in the current work Ra0.2 is obtained using two sets of different electrodes.