When cutting alloy steel, bearing steel and spring steel bars, many metal processors face tooth chipping, premature wear and unexpected blade breakage, which raise production downtime and tool replacement costs. Proper parameter matching and running‑in procedure greatly improve total cutting area and blade service life.
Follow the three tooth principle: keep at least 3‑12 teeth engaged into workpiece. Too few teeth cause tooth stripping; excessive teeth lead to chip clogging and overheating. For hard alloy steels such as 42CrMo, GCr15 and 65Mn, reduce band speed and feed per tooth value properly, while maintaining stable coolant supply to dissipate cutting heat efficiently. New bi‑metal blades require low load running in before full load production, to protect cutting edges from micro cracks.
M42 bi‑metal blades fit general carbon steel and low alloy steel. M51 high cobalt blades deliver superior heat resistance for continuous heavy duty sawing of high hardness workpieces. Machine rigidity also matters; adjust speed feed settings according to actual cutting sound and chip shape.
JINBIRD from Hangzhou Jinzhi Steel provides optimized saw blade solutions and free cutting parameter support for global metal working factories.
Visit www.jinzhi‑steel.com to explore full range bi metal, carbide tipped saw blades and OEM service.
