Material
Design
Heat
Treatment
Special Surface
Treatments
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The Correct Design for Your Machine Knives
Our team of experts will analyze your cutting application and provide you
with recommendations and cost effective solutions that meet your requirements.
We'll help you choose the correct design for your specifications, resulting
in reduced initial costs, superior cutting capabilities and extended cutting
edge life.
Here are some suggestions for design changes to increase life or decrease
cost:
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Tolerances
that are not important can be opened.
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Unnecessary
finish grinding can be eliminated.
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Sometimes
where cross sections are involved, an inlaid steel knife can be used instead
of solid tool steel. See Fig. 1.
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The
knife can possibly be made larger to permit more regrinds.
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The
knife can possibly be thinner, narrower or shorter without reducing the
number of regrinds. This is one of the easiest ways to reduce cost, since
cost of a knife is almost directly proportionate to its weight.
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A
less expensive steel might provide the same or better wear resistance;
for instance, A-7 will outwear M-2 where no heat is involved, and yet reduce
the cost of a knife by 10%-20% or more.
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It
may be possible to reduce chipping and increase the life of a knife by
modifying the bevel, as seen in Fig. 2. The bevels on the right are stronger
and resist chipping.
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