Wear-resistant grinding drum for employment in roller machines, particularly in high-pressure roll presses
AssigneeKloeckner-Humboldt-Deutz AG
InventorsGustav Buchholtz, Guenter Keller
Life of this patent
Estimating the term…
Abstract
An improved roll for a roller press capable of withstanding very high nip forces in a press nip for interparticle crushing including embedding a plurality of spaced wear-resistant surface members in the pressing surface of the roll which are of a material harder than the material of the roll surface surrounding the inserts and by varying the size and number and material properties of the embedded pieces, the wear of the press roll is matched to the materials to be comminuted to minimize wear and to match the wear profile along the roll with extended pressing use.
Claims20
A roll for a roller press capable of withstanding very high nip forces in a press nip for interparticle crushing, comprising in combination:
- a cylindrical press roll having an outer cylindrical pressing surface for use with an opposing roll in an interparticle crushing pressing nip;
- and a plurality of wear-resistant surface insert members embedded in the pressing surface of the roll being harder than the material of the roll surrounding said members;
- wherein the insert members project radially into the surface of the roll and the outer ends are truncated cone shaped for being firmly supported in the roll surface.
A roll for a roller press capable of withstanding very high nip forces in a press nip for interparticle crushing comprising in combination:
- a cylinder press roll having an outer cylindrical pressing surface for use with an opposing roll in an interparticle crushing pressing nip;
- and a plurality of wear-resistant surface insert members embedded in the pressing surface of the roll being harder than the material of the roll surrounding said members;
- and
- an annular binding ring surrounding the press roll and detachably secured to the outer surface thereof with said insert members supported in the binding ring.
A roll for a roller press capable of withstanding very high nip forces in a press nip for interparticle crushing comprising in combination:
- a cylinder press roll having an outer cylindrical pressing surface for use with an opposing roll in an interparticle crushing pressing nip;
- and a plurality of wear-resistant surface insert members embedded in the pressing surface of the roll being harder than the material of the roll surrounding said members;
- wherein inserts having a first surface area are provided intermediate the ends of the press roll;
- and inserts of a second exposed area are provided adjacent the ends of the roll.
The method of manufacturing a roll for a roller press capable of withstanding very high nip forces in a press nip for interparticle crushing comprising the steps:
- forming a cylindrical press roll having an outer cylindrical pressing surface for use with an opposing roll in an interparticle crushing press nip;
- inserting a plurality of inserts into the roll surface at spaced intervals having a hardness greater than the roll surface;
- and
- including shrinking a binding ring onto the outer surface of the cylindrical press roll aiding in supporting the inserts in the roll surface.
The method of manufacturing a roll for a roller press capable of withstanding very high nip forces in a press nip for interparticle crushing comprising the steps:
- forming a cylindrical press roll having an outer cylindrical pressing surface for use with an opposing roll in an interparticle crushing press nip;
- inserting a plurality of inserts into the roll surface at spaced intervals having a hardness greater than the roll surface;
- and
- including casting said cylindrical press roll and positioning said plurality of inserts into the casting mold at spaced intervals to be held in the surface of the roll as the cast roll cools.
Dependencies are inferred from the claim text.