When using any cold saw machine, it is important to select the proper tooth pitch for the material being cut.
Selecting the optimal tooth pitch for your cold saw blade will depend on:
- The hardness of the material
- The size of the section
- Wall thickness
Solid sections require blades with a coarse tooth pitch, while thin-wall tubes or shapes with small cross-sections require blades with a finer pitch. If you have too many teeth in the material at one time, the result will be tearing rather than chip removal. This leads to a higher increase in shearing stress.
On the other hand, when cutting heavy walls or solids using an excessively fine tooth pitch, the chips will spiral inside the gullet. Since fine-tooth pitches have small gullets, the accumulated chips will exceed the capacity of the gullets and press against the walls of the workpieces resulting in the chips jamming and getting stuck. The cold saw blade will start to perform like it is not cutting, but that is because it can't bite with jammed gullets. If you force the blade through, you will experience poor cutting and more significant shearing stress, which ultimately could lead to your cold saw blade breaking.
Please note that while choosing the proper tooth pitch for your application is very important, it is not the only factor determining the best cold saw blade for your application. Please read our other blog posts to learn more or give us a call. We would be happy to assist over the phone!