Abstract In this paper,effect factors of performance of the segment of vitrified CBN wheel were studied systematically.Four types of China-made CBN abrasive grains were tested for their compressive strength,impact toughness,micrograph,oxidation temperature and high temperature performance(baked at 870^oC),by means of SEM and DTA.Mixing principle,proportion and characteristics of vitrified bond were also discussed,and size of the wheel segment was optimized using ANSYS software.A low temperature high strength vitrified bond was developed,its bending strength achieved 60.13 MPa and its refractoriness was 890^oC.At last,grinding performances of wheel segments were tested based on high speed grinding,and the ground surface roughness R_a value of workpiece is 0.002 mm approximately under small infeed and small cutting depth.

Keywords CBN particles;vitrified bond;wheel segments;grinding performance

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