On Material Removal Regimes for the Shaping of Glass Edges: Force Analysis, Surface Topography and Damage Mechanisms

Abstract

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Effects of abrasive tools on surface finishing under brittle-ductile grinding regimes when manufacturing glass

“…Beyond the velocity of 30 m s −1 , it falls by a factor of 3 to reach approximately 5 J mm −3 . This evolution shows three different energy regimes as explained in a previous work (Demirci et al, 2008). Using the diamond-R wheel, specific energy remains relatively low for the velocities' range.…”

“…4. Micrographs obtained using diamond-R were compared to those reported in the previous work (Demirci et al, 2008). In comparison, focus is essentially put on damage generated by material removal mechanisms.…”

“…However, under good conditions, better surface finish with ductile streaks can be obtained on brittle materials (Zhong, 2003). It was reported in a previous work (Demirci et al, 2008) that damage varied sensitively with processing parameters, i.e., wheel velocities, feed rate and depth of cut. It might occur under three different regimes.…”

A multigrains׳ approach to model the micromechanical contact in glass finishing

“…The machine is of 5222 W maximum power, 650 mm maximum stroke and 100 m min À 1 maximum speed. Specimens of soda-lime silica glass (float glass) used in these tests were supplied in a rectangular block shape of size 220 Â 100 Â 10 mm 3 . The considered glass contains mainly silica sand (73%), calcium oxide (9%), soda ash (13%), magnesium (4%), and various other added components in very small quantities.…”

“…All of these parameters make it difficult to understand the mechanisms of grinding process. However, earlier attempts were conducted to examine the influence of process parameters (depth of cut, feed rate) [3] and wheel characteristics [4] on surface finish quality in order to study the fundamental fracture characteristics of optical glasses during grinding. Three different damage regimes have been pointed out:…”