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US 5,702,338 AGranted
Heat treating, annealing and tunnel furnace rolls
OwnerJorge A. Morandoinventor
Life of this patent
Estimating the term…
Abstract
A furnace roll for transferring steel strips from an annealing furnace has several spaced rings along the body of the roll. The rings have a width and diameter chosen such that the load on each ring is optimized depending upon the material of the strip and the ring material. The selected ring material is relatively insoluble with the strip material.
Claims20
A roll for transporting a heated, metal strip material comprising:
- an elongated roll body;
- and
- a plurality of generally circumferential wear rings encircling said roll body,
- wherein each of said wear rings has a radius extending greater than the radial dimension of said roll,
- said wear rings having an outer surface adapted for contacting and supporting said metal strip material during transport thereof,
- and wherein said outer surface is composed of a metal or metal alloy whose constituent metals have low coefficients of adhesion in compression with respect to said strip material being transported and supported by said rolls.
3 more elements
A roll for transferring a flat, heated strip of a first steel alloy from an annealing furnace, comprising:
- an elongated tubular body having a longitudinal axis;
- shaft means attached to opposite ends of the body for supporting the body for rotation about the axis;
- and
- structure integrally disposed on said body forming a discontinuous surface for contacting and supporting the flat heated strip on the tubular body as the tubular body is being rotated, said structure being formed of a second steel alloy that is relatively insoluble with respect to the first steel alloy of the heated strip, said structure having a material chemical composition limits of:
- ______________________________________ % % ______________________________________ 10.0 <N.sub.i <30.0 20.0 <C.sub.R <40.0 0.4 <C <1.8 2.0 <W <10.0 0.5 <M.sub.O <1.5 4.0 <C.sub.O <30.0 0.8 <S.sub.i <2.5 1.0 <Mn <2.0 0.0 <V <10.0 ______________________________________
2 more elements
A roll for transferring a flat heated strip of a first steel alloy from an annealing furnace, comprising:
- an elongated tubular body having a longitudinal axis;
- shaft means attached to opposite ends of the body for supposing the body for rotation about said axis;
- integral structure of a second steel alloy forming longitudinally spaced enlargements on the tubular body for contacting and supporting the flat steel strip as the tubular body is being rotated;
- the enlargements having a surface area contacting the steel strip, the surface area being capable of minimizing either removal of the second steel alloy from said integral structure by the heated strip, or removal of the first steel alloy from the heated strip by the integral body structure.
1 more element
A roll for transferring a flat, heated strip of a steel alloy from an annealing furnace, comprising:
- an elongated tubular body having a longitudinal axis, and adapted to be supported with said axis in a horizontal position;
- shaft means attached to opposite ends of the body for supporting the body for rotation about said axis;
- a plurality of annular members disposed in longitudinally spaced positions along the tubular body and about the longitudinal axis thereof, each annular member having an annular surface for contacting and supporting the heated strip for horizontal motion;
- and
- each of said annular members being integrally attached to the body to prevent motion of the annular member with respect to the tubular body.
2 more elements
A roll for transferring a heated strip of a first steel alloy, comprising:
- an elongated tubular body having a longitudinal axis;
- shaft means attached to opposite ends of the body for supporting the body for rotation about the axis;
- and
- structure integrally disposed on said body for contacting and supporting the heated strip on the tubular body as the tubular body is being rotated, said structure being formed of a second steel alloy that is relatively insoluble with respect to the first steel alloy of the heated strip, said structure having a material chemical composition limits of:
- ______________________________________ % % ______________________________________ 10.0 <N.sub.i <30.0 20.0 <C.sub.R <40.0 0.4 <C <1.8 2.0 <W <10.0 0.5 <M.sub.O <1.5 4.0 <C.sub.O <30.0 0.8 <S.sub.i <2.5 1.0 <Mn <2.0 0.0 <V <10.0 ______________________________________
2 more elements
Dependencies are inferred from the claim text.