... , grinding gears, mill threadRubberRHigher strength and elasticity, the porosity is small, poor heat resistance, the abrasive grains easily fall off.Suit ... , good flexibility, impact resistance, ruggedness and heat resistance is poor, small porosity.Suit for V> 50m / s, high-speed grinding, can ... -sharpening is poor.Use to manufactureall kinds ofdiamondabrasive tools. grinding wheels