Slitter geometry

Problem case

Depending on the application the edge geometry of the upper knife has an influence on the durability, cutting quality, safety and the risk of breakings.

Problem 1:
Breaks on the knife edge, especially with carbide metal knives

Problem 2:
Bad cutting quality

Problem 3:
Risk of injury on slitters

Solution

Solution to problem 1:

• If there is a risk of breaking a secondary bevel or chamferless circular knife will help
• Use powder metallurgical steel instead of carbide steel
• Check the stability of the knife holder

Solution to problem 2:

• Knives are dull – change knives
• Material of used knives
• Cutting point is incorrect
• Overlap is too high
• Overspeed is too low
• No or low cant angle

Solution to problem 3:

• Chamferless slitters offering the advantage of a much reduced injury risk and doubled durability through both sided usage