Grinding instructions for FASSCO-Paper-Cutting Knives

FASSCO-paper cutting knives are high-grade tools and therefore they need a careful treatment in regrinding. Only this ensures efficient cutting qualities.

Only experts should carry out this work, using suitable grinding wheels and machines.

ATTENTION!

  • Use the correct abrasives.
  • Sufficient coolant must be used.
  • Feed of the grinding wheel must be fine and uniform.
  • Frequent dressing of the grinding wheel.

It is important to use the best suited grinding wheels, such as segments, cylinder or cup wheels (see recommendations and technical data). Maximum coolant (with rust preventative) should be used, presented directly at the grinding area.

Grinding machines in poor condition, grinding feed rates too high, lack of water, and incorrect grinding wheels lead to grinding errors, which result in poor life, cracks and nicks.

We cannot replace knives free of charge which have faults due to bad regrinding.

We ask you to pay attention to the following technical description of regrinding:

Grinding instructions

It is essential that the steel inlay (1) and the carbon steel carrier (2) be ground together. The grinding wheel must contact the full width of the bevel surface (3).

This assures that the grinding wheel remains in continous contact with the unalloyed base which serves to roughen the wheel, and thus gives the cleanest grinding surface for the steel inlay. The risk of burning (decarburization) is thus reduced. Naturally, maximum coolant should be used (150 - 200 l/min), directly at the grinding area.

Pay maximum attention to choose the correct grinding wheels.

If only the steel inlay (1) has to be ground, such as adding a secondary bevel, use the softest available wheel and grind with extreme caution. Wheel feed per pass should not exceed .0004-.0005 in.

The highest possible table speed reduces the risk of buring. If the machine permits, it is also advisable to reduce the spindle speed. A lower spindle speed has the effect of a softer wheel. A higher spindle speed has the effect of a harder wheel.

Direct contact

Phone: +49 (0) 2191 / 20995-0
Fax: +49 (0) 2191 / 20995-20
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We are happy to provide further assistance!