Abstract: A coater blade and backing roll combination contains a coater blade having an elastic steel blade with a wear-resistant coating formed thereon. The wear-resistant coating has a hardness greater than that of the elastic steel blade and is provided on an edge of the blade to define a coater surface for contacting with a moving surface of coated paper on the backing roll. The backing roll has a concave outer surface having a curvature corresponding to a quadratic equation and the coater surface has a concave curvature corresponding to the quadratic equation.

Abstract: A roll used for tensioning a canvas belt used to hold paper against a dryer. The roll includes a main cylindrical body formed of steel. A layer formed of a metal harder than steel is disposed over the outer surface of the main body. The metal layer is formed with a channel around its center so as to define two spaced roll end sections of a common diameter. A fluororesin layer is disposed in the metal layer channel and is shaped so as to have an outer surface of a diameter equal to that of the metal layer end sections.

Abstract: A ferrite-ceramic composite powder consisting of fine particles of a ceramic material having a ferrite coating firmly bonded to the surface thereof is molten at high temperature and then cooled to produce a material in the form of a solid solution in which the ferrite component and the ceramic component are substantially homogeneously mixed together. Also, the ferrite-ceramic composite powder is mixed with fine particles of a second ceramic material and/or particles of a metal, and the mixture is baked to produce a sintered material.

Abstract: Disclosed is a ferrite-ceramic composite powder consisting of fine particles of a ceramic material having a ferrite coating firmly bonded to the surface thereof. The ferrite-ceramic composite powder is manufactured by the steps of immersing pellets of iron in an aqueous solution of ferric chloride in the presence of a magnetic field thereby turning the ferric chloride solution into an aqueous solution of a complex salt, mixing the complex salt solution with an aqueous solution of ferric chloride containing many fine particles of a ceramic material and agitating the mixture to obtain a composite aqueous solution, mixing an aqueous solution of caustic soda with the composite aqueous solution and agitating the mixture to cause deposition of crystals of a ferrite on the surface of the fine ceramic particles, rinsing the particles, and drying the particles.

Abstract: This invention relates to a production method of a mold for continuous casting comprising the steps of: providing a cooled water path in the mold water cooling mechanism; filling the cooled water path with a wax; making the wax surface uniform; providing a copper or copper alloy stratum on the wax surface by electrolytic plating; removing wax from the cooled water path and uniting the mold water cooling mechanism with the mold as one; and comprising the additional step of providing a copper or nickel plating on the surface on which is provided the cooled water path in the mold water cooling mechanism before depositing wax in the path.