Investigations on processing of cemented carbides and composite materials (BNDCC and DDCC) by means of grinding and hybrid machining

Abstract

Abstract:The paper presents analysis of influence of parameters and conditions of grinding process using diamond grinding wheels with ceramic bond (Ba23 bis, W1) on the geometrical structure and quality of machined cemented carbides (H10S) and composite materials (BNDCC). During performed analyses there was calculated the material removal rate Qw, specific material removal rate Q'w and G coefficient. There was performed comparative analyses of achieved results for various materials. There is also presented influence of machining conditions on the material removal process efficiency and quality of surface after machining of composite materials (DDCC and BNDCC) when using non-conventional machining processes: electrodischarge wire cutting (WEDM), electrochemical machining with rotating tool electrode (RECM) and hybrid process of electrochemical-electrodischarge machining with rotating tool (R-ECDM) with grinding wheel and metal disk as the tool electrode.

Electrochemical-discharge machining of composite materials

“…Obróbka ECDM wirującą elektrodą pozwala uzyskać zdecydowanie wyższą wydajność niż proces szlifowania (2,3 mm 3 /min w przypadku ECDM, wobec ~0,24 mm 3 /min) [6]. Jednocześnie technologia pozwala uzyskać wysoką dokładność obróbki.…”