The cylinder liner material produced by our factory is made of boron-containing alloy cast iron with a cylinder diameter of φ190mm. It is annealed before stress relief and has a hardness of 220~280HB. Boron alloy cast iron is formed by the reaction of boron with other elements at high temperature to form a hard point of boride, so that the material has good wear resistance and high temperature performance, but it brings great difficulty to the processing, and is refined with cemented carbide tools. The cylinder liner and the tool tip wear quickly. The tolerance of the inner hole cylindricity is 0.03mm. It is difficult to guarantee the average machining of 5 to 6 cylinder liners, which is the key to machining. After testing the AT6 ceramic blade, it achieved good results.
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NINGBO EASTKEY ILLUMINATE APPLIANCE CO.,LTD , https://www.dkledmirrorlight.com