A rotary union is a sort of rotary tube joint used to admit stream or fluids from pipeline to rotating equipment. For the fluid is conveyed by rotating joint, sealing equipment achieving non-leak at revolving parts is important. Developments on high-p...
A rotary union is a sort of rotary tube joint used to admit stream or fluids from pipeline to rotating equipment. For the fluid is conveyed by rotating joint, sealing equipment achieving non-leak at revolving parts is important. Developments on high-performance rotary unions in shaft structure and wear resistant seals to maintain its degree of a vacuum and not to be damaged easily from chemical materials are necessary, especially when feeding various gases for processing simultaneously in vacuum systems or providing chemicals or medicines for a mixer or an reactor in medical, pharmaceutical and chemical fields. Further studies on a rotary union for a high-degree vacuum chemical resistance are thus needed. We report the results of ultra precision grinding experiment of tungsten carbide(WC) and ceramic coating materials for manufacturing a rotary shaft, a core part of a rotary union.