Webb21 apr. 2009 · The recast structure has micro-cracks and discharge craters causing bad surface quality that are difficult to remove due to high cohesion and hardness … Webb3 juni 2024 · To address defects in the recast layer and microcracks in laser drilling, this study adopted laser-electrolytic composite machining technology to conduct a boring …

Recast layer removal after electrical discharge machining via …

Webb31 jan. 2024 · The mezzotint etching technique is done using a copper plate that has been grounded, and then instead of scratching on the plate surface, a mezzotint rocker is … Webbefforts in HF-based chemical etching have succeeded in dramatically improving the damage resistance of fused silica,10–12 they remain limited to the surface quality a er etching.13,14 The root cause of the surface quality degradation is chemical treatment leaving etching traces (scratches and pits hippo roofing melbourne florida

GSMP » ReCast Layer Removal

Webb21 feb. 2024 · The water blasters put in a special chemical to stop it from flash rusting, but that stuff only lasts a day or two. Few people are prepared to prime their sheet metal immediately, esp since it will get in the way of any metal repair you have to do, which is usually considerable. You don't need to. WebbDisclosed is a process for machining nickel-base superalloys wherein a thermal-effect process, such as laser or electric discharge machining, is first used to remove material but leaves a recast layer. Next a chemical milling process is used wherein the etchant only attacks and removes the recast layer. The etchant is comprised by volume percent of 40 … WebbTo enhance the anisotropic etching effect while suppress the etching-induced FL defects, we chose the gas flow ratio R of 0.6 for the subsequent etching experiments. The etching uniformity of the RIBE process was shown in Fig. 4.In the case, if the acceptable deviation for etching depth was 5% of the maximum value, 24 the uniform etching region was a … hipp ors