Lennartz GmbH & Co. Kg

Hot and friction circular saw blades

LENNARTZ hot and friction circular saw blades up to 2,500 mm in diameter are high-performance tools made of tried and tested special tempered steels with a strength of 850 to 950 N/mm2. Hot and friction circular saw blades are used for the cutting of slabs, billets, sheet metals, tubes and profiles. Hot circular saw blades are used for cutting material temperatures > 850°C, whereas friction circular saw blades are used for cutting material temperatures < 250°C. The fusion cutting separation principle is used for both separation processes. Thereby, frictional heat is generated in the work area of the tool, which is almost close to the melting temperature of the material. This requires a cutting speed of VC = 100-140 m/sec. A sufficient press water cooling in the tooth region must be ensured, in order to flush out residual material from the tooth base. Depending on the cutting task, a feed rate of Vf = 80-2.000 mm/min. can be achieved.