In support of the developing "Wind Power" market, the requirement for larger and larger turbines has emerged. With that comes the need to effectively heat treat larger and larger transmission drive components including bearings and gears.
These transmission components will require heat treating equipment approaching 10 feet in diameter and larger. Individual part weights of 20,000 pounds will become commonplace, with multipart loads exceeding 50,000 pounds.
Virtually all components of this size will require thermal processing in atmosphere pit type furnace equipment. Two primary concepts are utilized in pit furnace construction – muffle design and baffle design.
Conventional atmosphere processing results in the formation of intergranular oxidation on the surface of the components. It has been suggested that a muffle design (retort) is required to reduce the formation of intergranular oxidation, which therefore should result in a superior metallurgical part.
Metallurgical data from components processed in both designs – suggested muffle and conventional baffle - will be evaluated with respect to final part quality.
Specific furnace design, including atmosphere recirculation, heating systems, and proper refractories will be reviewed.
Quench systems, including media, agitation, heating and cooling will be discussed.
If you are currently active in the "Wind Power" large gear market segment or contemplating entry into this market, please plan on attending.
