As you may or may not know, I presented a webinar on www.makino.com last July concerning the effects of the EDM process on surface integrity of titanium. The data and photo micrographs were supplied courtesy of Lockheed Martin Aeronautics. Based on the test results that LMA provided to Makino, we decided to do some of our own testing. These tests included 1, 2, and 3 pass machining on aluminum, stainless steel, and titanium, with brass and coated wires. Metallurgical tests performed included recast layer and HAZ thickness, micro-cracking, and micro hardness of the various samples. The results we saw were pretty amazing! Check it out for yourself here.
