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1. ZCC.CT brand, 2.suitable for internal and external finishing machining for various materials such as steel and cast iron etc. - details see: https://www.machineto.com/mark-down-sale-zcc-ct-brand-tungsten-carbide-blades-10155955

1.PM: Recommended chipbreaker for semi-finishing P-kind materials

Double-side chipbreaker with M-class tolerance has higher hardness on cutting edge than chipbreaker DM, it’s suitable for semi-finishing under unsteady conditions and also for machining cast iron with low cutting force.

2. Selecting grade by workpiece material and working conditions

Prior to select grade for insert according to working condition that is suitable for

workpiece material:

A. Good working condition: machine works well and stably, higher demands for size precision of component and surface quality.

B. Normal working condition: machine works normally, size precision of component and surface quality are required to a certain extend.

C. Bad working condition: machine works with bad stability, demands for high metal removal rate.