The new product of Beijing porcelain company, the brand is CA4120, CA4115, what basically be used at the material such as nodular cast iron is efficient treatment, bit material matrix is fine grain hard alloy, via CVD coating processing, coating is imperceptible and columnar structure, the crack resistance that this kind of structure can improve bit greatly can, the wearability of bit and sex of the blade that fight collapse are improved apparently, treatment efficiency can raise 2 times. Already stabilized now those who be used at material of nodular cast iron is successive machine with interrupted cutting. CNC MillingCNC Machining