Finishing Engine Block with Halnn BN-S300 Solid cbn inserts

Finishing Engine Block with Halnn BN-S300 Solid cbn inserts Automobile Engine Block are made of gray cast iron, in order to ensure the finish of the engine block, Halnn Superhard research BN-S300 solid cbn inserts materials, mainly used in finishing process. The advantage of finishing Pulley with BN-S300 Solid CBN inserts 1. Obtain good roughness, 2. Avoid the reduction of the tool life because of adding metal adhesive, 3. Improve inserts durability and reduce cutter costs, 4