In the grinding process, with the wheel itself is worn , the wheel is changing the face of the state . The longer the time , the PINEZONE abrasive paper sheet lower the cutting ability of the wheel , a variety of grinding defects will continue to emerge , the grinding up to standard . Then it must be trimmed to achieve a normal grinding wheel condition. We usually refer to the grinding wheel life refers to the actual time between the grinding wheel dressing twice . Wheel length of life directly affects the grinding effects, especially more important for profile grinding . Determination wheel life
Is generally based on the wheel face PINEZONE cut off wheel various phenomena arising from wear and tear , through observation and tests carried out . After grinding wheel wear phenomena arising are: self-excited vibration grinding process , the surface appears regeneration chatter ; increased grinding noise ; workpiece surface grinding burn occurs ; grinding force increases or decreases sharply ; grinding accuracy decreased ; grinding surface roughness increases.
These phenomena mentioned above are not PINEZONE Bonded abrasives reasonable grinding independently generated , there is a correlation between them . There are two types of these phenomena are in need of special attention: first , due to thermal damage of the workpiece surface grinding temperature generated ; Second, because the roughness and precision decline caused by the self-excited vibrations .
Unless the nature of the work absolutely precludes its use, a guard shall be provided and kept in position at every abrasive wheel for the work. First of all abrasive safety training should be provided to the workers to avoid any accident.
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