Effect of elastic controlling parameters on the PCD burnishing system

Abstract

Burnishing processing is effective in leveling off the cutting marks on the machined surface of workpiece formed by pre-machining tools. The effect of elastic controlling parameters on burnishing force, surface roughness and microhardness of aluminum alloy workpiece burnished with elastic burnishing polycrystalline diamond (Pf.D) tools is studied experimentally with a theoretical analysis. The topics in choosing the optimum elastic controlling burnishing parameterspretightening force and rigidity coefficient are discussed. With suitable elastic controlling parameters employed, the surface roughness reduced to R, = 0.08 micron from the original 0.4 micron. The better microhardness and surface roughness were obtained during elastic burnishing processing with spring rigidity coefficient is 0.75 N/mm and pretightening force 31.5 N.

Deep Shale Oil Extraction Integrated with Carbon Dioxide Sequestration

“…It was reported that in China the identified resources of oil shale is 3.15 billion tons, and the forecast resources 45.2 billion tons. Counted on the basis of six percent of oil content, the identified shale oil is 0.19 billion tons, and the forecast oil 2.71 billion tons [2]. Several countries, such as Estonia and Israel, have been being researched oil shale's composition, properties and applied technology widely and deep [3].…”