
Dull Tools Result In More Than Poor Grind Life.
I have been told that, in addition to poor grind life, there are more problems that can be attributed to dull tools. Is that true and if so, what are they?
Dull tools certainly can cause more problems than just accelerated tool wear. Some of the additional problems associated with dull tools are as follows:
Galling: A dull punch tends to make a slightly smaller hole, which will, in turn, generate more friction (heat) as the punch passes through the hole. This condition will end up with galling and/or mis-strips.
Tip Failure: The combination of a dull punch and successive hits will often elevate the tip temperature enough to effect its heat treat and could cause it to fail altogether. Small diameter punches will often bend due to the extreme heate generated under these conditions.
Slug Pulling: A dull punch will create a burr on the slug, which will tend to increase the sealing effect between the end of the punch and the slug. The resulting suction increases the chances of slug pulling. |
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This free class provides hands-on instruction on the use and maintenance of the entire Wilson Wheel family of tooling. For more information or to register, please e-mail: marketing@wilsontool.com
Classes available on:
- August 21, 2007
- September 18, 2007

Fabtech
November 11-14
Booth #16107
McCormick Place
Chicago, IL
Metalform
April 1-3, 2008
Booth #213
Birmingham-Jefferson Convention Complex |