Temperature < 200℃ (Conventional grinding temperature): At this temperature, the impact on performance is minimal. Only slight softening occurs, and the elasticity of the resin binder slightly increases, which has a certain optimization effect on the surface roughness of the workpiece. It does not affect the strength and service life of the grinding wheel and is considered an acceptable normal operating condition.
Temperature reaches 200-300℃ (Sustained high-temperature operating condition):
The binder begins to decompose and carbonize: The resin matrix gradually loses weight and decomposes, rapidly reducing its ability to bond abrasive grains. Abrasive grains are more easily detached, significantly increasing grinding wheel wear and shortening its service life.
Dimensional accuracy is affected: Resin softening leads to excessive binder elasticity, reducing the overall rigidity of the grinding wheel. Dimensional drift is prone to occur during processing, requiring additional sharpening correction and reducing machining accuracy.
Special positive changes: For normal self-sharpening needs, carbonization caused by localized, short-term high temperatures can actually help expose new abrasive grains, improving grinding efficiency to some extent. This is a normal process phenomenon. Only sustained high temperatures will cause destructive effects.
Temperature > 300℃ (Overload Continuous Processing)
Complete Resin Decomposition and Failure: The bonding structure is completely destroyed, the overall strength of the grinding wheel drops sharply, abrasive grains detach in pieces, and the grinding wheel may even crack and shatter, rendering it unusable.
Increased Safety Risks: High temperatures reduce the impact resistance of the resin binder, posing a safety hazard of fragmentation and ejection during high-speed rotation. Additionally, some ordinary resin grinding wheels may emit odors, affecting the working environment.
