The roughness of parts will be less than Ra 0.1
The hardness will be increased to 15-30%
The wear resistance will be increased by 15%
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Rotary broach tool can make internal hex, square, spline.
Material: high speed steel, it can process more than 3000 pcs parts.
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Roller burnishing tool can improve the roughness of surface.
It's suit to process the parts hardness less than HRC30.
With high speed steel material, it will be more durable.
Roughness is about 0.2 um.