New processing technology -- superhard CBN inserts help the rapid development of wind power bearings in the wind power industry
Wind power bearing is a special kind of bearing, which is used in harsh environment, high maintenance cost and requires long life. Bearings for wind turbines mainly include: yaw bearing assembly, blade main shaft bearing, transmission bearing, generator bearing, etc. (mentioned in related technical articles). The structure of the bearing mainly includes four-point contact ball bearings, crossed rollers Bearings, cylindrical roller bearings, spherical roller bearings, deep groove ball bearings, etc.
Processing technology of fan bearing
Pitch bearing
Inner ring - rough turning → quenching and tempering → semi-finishing turning → channel soft grinding → channel quenching → fine turning, rough grinding → hole machining, gear machining → gear quenching → final grinding, fine grinding;
Outer ring - rough turning → quenching and tempering → semi-finishing turning → channel soft grinding → channel quenching → fine turning, rough grinding → hole machining → final grinding, fine grinding.
Yaw bearing
Inner ring - rough turning → quenching and tempering → semi-finishing turning → channel soft grinding → channel quenching → finishing turning, rough grinding → hole machining → final grinding, fine grinding;
Outer ring - rough turning → quenching and tempering → semi-finishing turning → channel soft grinding → channel quenching → finishing turning, rough grinding → hole machining, gear machining → gear quenching → final grinding, fine grinding.
Part of Bearing and suitbale Tools
Slewing ring bearings and wind power bearings are large bearings with a diameter of more than 1 meter or even nearly 3 meters. --PCBN tools bring great challenges.
The hard turning parts of wind power bearings and slewing ring bearings are mainly the outer raceway, inner raceway and ribs. The common materials are BN-H200 RCMX, RCGW, RNGN , RCGO types, Full Face composite PCBN tool, Solid CBN Inserts with hole. Our inserts not only large cutting allowance, but also can withstand fracture Continuous cutting can effectively meet the needs of manufacturers to reduce costs and increase efficiency.
What are the advantages of Halnn BN-H200?
BN-H200 is mainly used in the fields of large slewing ring bearings and wind power bearings. BN-H200 material has both excellent wear resistance and impact toughness. It can be cut with a large margin during rough machining, and does not chip in intermittent working conditions. During finishing, the roughness and dimensional accuracy within Ra1.6 can be obtained, and dry cutting is possible. It can also be wet-cut, air-cooled, etc., the cutting performance is extremely stable, and it can advantageously replace imported tools and homogeneous PCBN tools.