Abstract: An improved method for the manufacture of a solid disc rotor and/or rotor segment for a single disk refiner, double disk refiner, multi-disk refiner, single cone refiner, or a double cone refiner. The invention comprises a plurality of blades spaced apart by recessed locations of a base plate. Either a water jet milling machine or a horizontal gang mill or both may be used. The blades comprise appropriately dimensioned cold rolled and cryogenically stabilized stainless steel or other appropriate stock of the appropriate hardness required by the application. The blades fit into respective locations in the base. The invention is further characterized by a continuous laser weld (85) along either side of each respective blade at its junction with the base, a variety of possible blade and base materials, and the use of one or more of cryogenic treatment, water cut jetting and water jet milling technologies.

Abstract: A variable frequency foil (VFF) box assembly and mechanisms for moving individual foils/foil beams and individual foil beam sets relative to each other to adjust the frequency of a paper making machine, and method of use are provided. The VFF box assembly allows for continuously and uniformly adjusting the pitch distances of individual foils within foil sets over a finite range, and also adjusting the distance between foil sets during the continuous operation of a paper making machine. Also provided is a variable frequency assembly comprising a combination of dewatering elements such as one or more foil elements and table rolls, a multi-surfaced foil element, and/or an adjustable angle foil element.