The high quality Disston line of hot & friction saw blades are made from special alloy steels. Our saw blades give more cuts between sharpenings, retain their sharp edge on even the toughest applications, and resist cracking due to the precise control of chemistry, extremely clean melting practices and precision heat treating.
Hot Saw Blade – in stock & custom made
- Diameter – 16″ to 96″
- Thickness – .25″ to .625″ or up to 2000 lbs
- Hardness – 28HRc to 44HRc
Friction Saw Blade – in stock & custom made
- Diameter – 16″ to 96″
- Thickness – .25″ to .625″ or up to 2000 lbs
- Hardness – 28HRc to 44HRc
Disston friction saw blades range from 16” to 96” in diameter and are designed to cut structural and tubular steels. These metal cutting circular saw blades work at speeds of 18,000 to 26,000 surface feet a minute (SFM ). To insure top performance, Disston uses low stress milling cutters to form the tooth profile; thus ensuring tooth configuration uniformity and a smooth surface in the gullet (root) area to reduce cracking.
A circular friction saw blade is often used to cut structural beams and other steel products, tubular and pipe products, steel grating, culvert pipe, and other steel shapes and configurations.
What is friction cutting?
In friction cutting, a very high-speed circular blade containing a flat toothed edge imparts heat through friction at the very small tangential point of contact faster than the product can absorb heat. When the force of friction created by the rubbing of the teeth exceeds the strength of the heated material, a chip is torn away and the process is repeated on a continuous basis.
What is hot saw cutting?
Hot sawing is friction cutting while the work piece is red-hot (i.e. 1600 Deg. F to 2000 Deg F). Hot sawing is a much less severe application than cold sawing and requires only a fraction of the energy required to cut cold. As the point of contact heats up from the rubbing of the flat (land) of the tooth against the product, the force of friction tears away a small chip approximately .0001” in thickness.