Meaning
Cobalt-alloyed high-speed steel provides the high wear resistance and hot hardness required for demanding industrial cutting applications in battery production lines. This alloy, designated as AISI M35, contains approximately five percent cobalt to increase thermal stability during continuous high-speed operation. It maintains sharp cutting edges when machining hard electrode materials and coated metal foils.
Alloy Performance
The addition of cobalt increases the tempering resistance and secondary hardening response during heat treatment of the metal. Slitting cathode foils coated with abrasive lithium transition metal oxides requires blades that do not dull or chip easily. This material withstands the severe frictional heat generated during high-frequency shearing operations, preventing burr formation on the electrode edges.
Sourcing Selection
Sourcing specifications for roll-slitting blades require tool steels with uniform carbide distribution to avoid micro-chipping. Blade suppliers must guarantee a minimum hardness of sixty-four on the Rockwell C scale after heat treatment. This ensures that tool wear remains minimal over millions of shear cycles, which reduces the downtime required for blade replacements in the production facility.
Mechanical Hardness
Coarse carbide clusters can reduce the impact toughness of the cutting tool under heavy shock loads. Shock loading must be avoided by maintaining precise alignment of the cutting assembly.
