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Home / en-gb > Lowdown on grinding > Cutting and grinding done right

Cutting and grinding done right

Designed as high-performance products for angle grinders, our thin Kronenflex® cutting-off wheels are distinguished by their exceptionally fast cutting times and minimum burr formation. They are a particularly excellent choice for thin-walled materials that need to be cut fast and with perfect precision at the lowest possible thermal load. Everyone observing a few basic rules will achieve the best possible work results at maximum safety.

Designed as high-performance products for angle grinders, our thin Kronenflex® cutting-off wheels are distinguished by their exceptionally fast cutting times and minimum burr formation. They are a particularly excellent choice for thin-walled materials that need to be cut fast and with perfect precision at the lowest possible thermal load. Everyone observing a few basic rules will achieve the best possible work results at maximum safety.

1. Correct contact pressure = longer service life

Richtiger AnpressdruckThanks to the outstanding cutting performance of our wheels, the machine's own weight will suffice to generate the necessary contact pressure. Excessive pressure will lead to premature wear.

 

 

 

2. Optimum circumferential speed = enhanced cutting performance

Optimale Umfangsgeschwindigkeit The ideal ratio of number of cuts to disc wear is achieved immediately below the permissible maximum circumferential speed. Provide for a continuously high rate of speed. If the speed of the machine is too low, the wheel will wear out at a disproportionately high rate.

 

 


3. Proper handling = increased safety

Richtige HandhabungCutting-off wheels may only be subjected to radial loads. This will keep the wheel from wobbling, buckling or even breaking - especially when the operator applies a high level of contact pressure.

 

 

 

4. Ideal cutting position = boosted stability

Ideale SchnittpositionThe material should be affixed as closely to the cutting site as possible in order to keep it from vibrating, fluttering or slipping to the side. The workpiece must be clamped firmly into position to keep it from slipping while the cut is being made.




5. Correct mounting = better power transmission

Korrektes AufspannenCutting-off wheels are mounted to the machine with clamping flanges capable of transferring enormous power to the wheels. For reasons of safety, it is imperative not to use defective or incorrect flanges and to comply with all applicable standards and regulations. Using clamping flanges with diameters that do not match is prohibited.

 

The proper angle of attack during grinding

Grinding discs operate at peak performance when used at an angle of attack of 25-30° relative to the workpiece. This angle delivers the most favourable ratio of stock removal to disc wear. As a consequence, this angle of attack should be selected whenever possible. A decrease in the angle of attack to 15° or less will cause the grinding process to produce a long-ended, ultra-thin edge at the circumference of the disc. This edge will keep the disc from absorbing the grinding pressure even if the angle of attack is altered only slightly, ultimately causing the wheel to shed grain. This will leave precious abrasive grain unused and, worse yet, cause a wobble, making it necessary to replace the disc prematurely.


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