Abstract
This paper conducts theoretical analysis on the presence of absorbed water and lattice water in the oxide film of ELID grinding wheel, carries out experimental study by applying X-ray (XRD) diffractometer, infrared spectrometer, and thermal gravimetric analyzer TG-DSC, and further proposes the two-step cooling mechanism of the absorbed water and lattice water in the oxide film of ELID grinding wheel. The study shows that there are adsorbed water and lattice water in ELID oxide film, and the cooling effect of adsorbed water and lattice water makes ELID grinding better cool the grinding zone, and get good grinding surface quality more easily.
Highlights
ELID grinding technology is used in ultra-precision grinding of the materials which are difficult to be processed, and it has important applications in aerospace, national defense, equipment manufacturing, automotive, instrumentation and other fields [1]
The oxide film generated from the pre-electrolysis of wheel surface is in a wet state, which contains a large amount of electrolyte, so the gap in the oxide film scraped contains much absorbed water
The mass loss is equal to the lattice water quality in iron oxide, which can determine that the weight loss occurring at 250 ć -300 ć is due to the lattice water dehydration in oxide film, and dehydration of hydrated iron oxide in the oxide film of grinding wheel generates Ȗ-Fe2O3
Summary
ELID grinding technology is used in ultra-precision grinding of the materials which are difficult to be processed, and it has important applications in aerospace, national defense, equipment manufacturing, automotive, instrumentation and other fields [1]. Research results described the performance of the oxide film from different sides respectively, but there is no systematic research on the absorbed water and lattice water in oxide film and their impact on ELID grinding process.
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