Gas-quenched steel slag abrasive was obtained by gas quenching with high-temperature liquid steel slag as raw material.The phase composition,thermal properties,micromorphology,magnetic properties,and mechanical properties of the par-ticles were characterized by using an X-ray diffractometer,a differential thermal analyzer,a scanning electron microscope,a magnetic property meter,and a compressive strength tester,respectively.Results show that the gas-quenched steel slag abrasive is a monodisperse regular sphere.The compressive strength of a single particle is 34 N.The product is ferromag-netic and has good thermal properties.The micromorphology and flatness of the workpiece before and after grinding with the gas-quenched steel slag abrasive were measured using a three-dimensional profilometer.Results reveal that the surface roughness of the workpiece is reduced to 1.526,0.623,and 0.227μm after grinding for 5,10,and 20 min,respectively.The surface profile fluctuation decreases to±1.0μm.Thus,the workpiece surface tends to be flat without obvious scratches.
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