| 摘要 |
<p>A refining disc assembly for wood pulp or the like, particularly including a rotor disc and an intermediate disc of a coaxial assembly of three refining discs, comprises a hub having two or more radial peripheral fins, interconnected by an outer ring having spaced perforations for attachment thereto of a refining disc. The refining disc is formed of a carbon-steel, iron or stainless-steel frame and comprises two concentric rings, interconnected by radial rods. The internal ring contains perforations matching those of the hub. The refining disc receives on both faces thereof, a plurality of trapezoidal stainless-steel plates, attached thereto by welding, and with intermediate gaps which are filled with weld beads, the internal and external contours thereof being machined on a lathe, after which both faces of the so-obtained disc receive refining blades, attached by welding.</p> |
