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| Number | Title | Issue Date |
| 7200935 | Work roll Improved work roll, particularly for use in closed gap rolling, has a composite structure comprising a cylindrical outer layer (14) made of steel, and providing the work surface of the roll, separated from a steel core (12) by an intermediate layer ( | 04/10/2007 |
| 6773383 | Vibration damping roll A vibration damping roll is provided for rolling contact with a vibrating structure. The vibration damping roll incorporates a wave guide consisting of radially alternating rigid and flexible material having at least two rigid elements disposed adjacent to flexible ... | 08/10/2004 |
| 6685076 | Roller for nipped applications and method of making roller A roller including an inner tubing and an outer tubing which is fixed relative to the inner tubing by welding the outer tubing to the inner tubing. The roller with weldments is particularly suitably for a nipped application.... | 02/03/2004 |
| 6513699 | Process for the production of metal pipes A process for the production of metal pipes is described in which a thin-walled metal band inclined toward cold spots is gradually formed into a slotted pipe, the longitudinal edges lying flush against one another are welded to one another, and the welded... | 02/04/2003 |
| 6374494 | Compound roll for thin cold rolled steel strip and method of manufacturing same The present invention provides a composite roll for cold rolling capable of rolling a cold-rolled steel strip having little edge drop, a cold-rolled stainless steel strip or a bright finish steel strip having excellent surface brightness or a silicon stee... | 04/23/2002 |
| 6110084 | Combined roll having excellent resistance to thermal shock A combined roll is provided which offers excellent resistance to thermal shock. In this combined roll, an external ring portion is formed of a cemented carbide, and an internal ring portion is formed of a ductile iron metallurgically bonded to the externa... | 08/29/2000 |
| 5839495 | Method of manufacturing roll for hot rolling A roll outer layer material for hot rolling includes, as analyzed in weight percent, of 2.5-4.0% C, 6.0-20% Cr, 3.0-10.0% V, 0.6-5.0% Nb, 2.0-15% Mo, 3.0% or below Si, 3.0% or below Mn, C, V, Nb and Cr satisfying a following formula (1), 10.5(%)ࣘ6.5.C(%... | 11/24/1998 |
| 5823926 | Caster roll core and shell assembly and method of manufacturing the same An improved caster roll core and shell assembly includes two overlays of stainless steel of different hardness which are deposited on the surface of the roll core, thus prolonging the life of the roll. The method for manufacturing the roll is also describ... | 10/20/1998 |
| 5674171 | Roll outer layer material for hot rolling and method of manufacturing roll for hot rolling A roll outer layer material for hot rolling consists essentially, as analyzed in weight percent, of 2.5-4.0% C, 6.0-20% Cr, 3.0-10.0% V, 0.6-5.0% Nb, 2.0-15% Mo, 3.0% or below Si, 3.0% or below Mn, C, V, Nb and Cr satisfying a formula where 10.5ࣘ6.... | 10/07/1997 |
| 5419973 | Composite roll for rolling and process for producing the same A composite roll for hot rolling wherein the outer layer portion of a composite roll comprises a steel comprised of, in terms of % by weight, 1.5 to 2.4% of C, 3 to 6% of V and 10 to 20% of at least one element selected from the group consisting of Cr, Mo... | 05/30/1995 |
| 5380264 | Roller for use in molten metal bath A molten metal plating apparatus includes a roller rotatably supported by a bearing in a molten metal bath, the roller having a shaft sliding portion, the bearing having a sliding portion, both the shaft sliding portion and the sliding portion being made ... | 01/10/1995 |
| 5167067 | Method of making a roll with a composite roll ring of cemented carbide and cast iron The present invention discloses a roll for hot and/or cold rolling. The rolling track comprises one or several cemented carbide rings, which are cast into a casing made by an iron alloy. The cast alloy comprises a materially graphitic cast iron, which aft... | 12/01/1992 |
| 5154074 | Roll with width adjusting function A rolling apparatus having a width adjustment function includes a horizontal sleeve roll divided into two rolls in the axial direction and shrink-fitted over an arbor. Internal threads are formed in the inner circumference of one of the divided sleeve rol... | 10/13/1992 |
| 5104458 | Method for manufacture of a roll ring comprising cemented carbide and cast iron The present invention discloses a roll ring for hot and/or cold rolling. The rolling track comprises one or several cemented carbide rings, which are cast into a casing made by an iron alloy. The cast alloy comprising a materially graphitic cast iron, whi... | 04/14/1992 |
| 5081760 | Work roll for metal rolling A compound roll for a metal rolling mill having both excellent resistance to a thermal shock crack and excellent wear resistance includes a core shaft made of low alloy steel and an outer layer consisting of high speed tool steel having a composition, by ... | 01/21/1992 |
| 5053284 | Wear-resistant compound roll A wear-resistant compound roll having a shell portion produced by sintering a uniform mixture of alloy powder consisting essentially, by weight, of 1.2-3.5% of C, 2% or less of Si, 2% or less of Mn, 10% or less of Cr, 3-35%, as W+2Mo, of one or two of W a... | 10/01/1991 |
| 5044056 | Roll ring comprising a ring of cemented carbide metallurgically bonded to a cast iron body A roll ring for hot and/or cold rolling. The rolling track comprises one or several cemented carbide rings, which are cast into a casing made by an iron alloy. The cast alloy comprises a materially graphitic cast iron, which, after casting, contains resid... | 09/03/1991 |
| 5040398 | Ceramic sleeve incorporated rolling roll A rolling roll comprises a metal rolling roll body, a ceramic sleeve into which the roll body is inserted with a gap therebetween, thereby providing a working surface of ceramics at an outer periphery thereof, fasteners provided on the roll body at both s... | 08/20/1991 |
| 4958422 | Wear-resistant compound roll A wear-resistant compound roll comprising an outer layer made of an iron-base alloy containing such components as to precipitate at least one of carbides of W, V, Nb, Ti, Ta, Zr and Hf from an alloy melt in a solidification process thereof, and a steel sh... | 09/25/1990 |
| 4941251 | Rollers for rolling mills A roller for rolling mill comprising an entirely non-metallic sintered body composed principally of at least one material selected from silicon carbide, silicon nitride, sialon, alumina and zirconia and having a relative density which is at least 96% of t... | 07/17/1990 |
| 4924688 | Mill roll A mill roll with a ceramic working surface comprises an annular ceramic formation sleeved upon a hub. In preferred embodiments the ceramic formation is clamped to the hub at angled edge walls so that the formation is held under compression.... | 05/15/1990 |
| 4912835 | Cermet sprayed coating roll with selected porosity and surface roughness A roll for use in rolling process is disclosed. The roll is provided with a sprayed coating of cermet in such a way that a porosity of the sprayed coating of for example a compound of tungsten carbide and cobalt and nickel-chromium cermet is selected less... | 04/03/1990 |
| 4909059 | Metal tubing bender A metal tubing bender forms arcs into metal tubing by engaging a swing-arm mounted roller against a clamped tubing section and rotating the roller through an arc necessary to place the desired degrees of bend into the tubing. The tubing is clamped against... | 03/20/1990 |
| 4876875 | Supported ceramic guide roller A supported ceramic roller and a method for production and use thereof is provided, particularly as a guide roller in a non-ferrous rolling mill. A ceramic roller member is attached to a backing member, preferably metallic, by an adhesive which has the ch... | 10/31/1989 |
| 4866968 | High strength cemented carbide dies and mandrels for a pilgering machine Pilger tooling for use in a pilgering machine includes an elongated stationary mandrel for supporting a tube thereon in position for cold reduction, and a pair of roller dies positioned along opposing sides of the mandrel and in oppositely-facing relation... | 09/19/1989 |
| 4819471 | Pilger die for tubing production A pilgering die for use in cold forming of tubular members is in the shape of a ring member having a groove in the outer periphery thereof and a bore therethrough, the die composed of at least two different alloy sections. The case or outer region of the ... | 04/11/1989 |
| 4802528 | Hoops for continuous casting rolls The invention relates to hoops for rollers for the continuous casting of aluminium, characterized in that they are in the form of forged cylindrical casings which have undergone heat treatment and machining and consist of an alloy steel having the followi... | 02/07/1989 |
| 4793042 | Rolling mill roll assembly A rolling mill roll assembly comprising an inner cylindrical mandrel and an outer cylindrical sleeve bonded thereto with glue containing grit particles. Wire is spirally wound around the outside of the mandrel and secured thereto with the glue. The sleeve... | 12/27/1988 |
| 4777822 | Method of hot rolling copper The present invention relates to a method of hot rolling copper or copper alloys such as copper wires and coppr plates. The present invention has succeeded in remarkably prolonging useful life of the tools used for hot rolling, and improving the surface q... | 10/18/1988 |
| 4771524 | Roll having a hard envelope surface To increase abrasion resistance, a cast-iron roll is given a carbidic running-surface layer which has a defined depth of at least 1 mm and a fine-grained structure whose cementite dendrites have a length of at most 100 μm and a thickness of at most 20 μ... | 09/20/1988 |
| 4756180 | Method of hot rolling for iron and iron alloy rods A novel method of hot rolling iron and iron alloy rods, using a hot rolling tool comprising ଲ-Si3 N4 and a sintering aid selected from the group consisting of Al2 O3, AlN, MgO, Y2 O3 and ... | 07/12/1988 |
| 4726417 | Adamite compound roll A compound roll for rolling composed of a shell made of adamite having a carbon content of 1.4-2.5 weight % and a core made of forged or cast steel, the shell being metallurgically bonded to the core by casting an adamite melt around the already prepared ... | 02/23/1988 |
| 4698884 | Roll for hot forming steel rod Disclosed herein is a carbide roll having an improved composition for hot forming steel rod in multi-stand rolling mills. The improved composition comprises the addition of nickel as a binder material to a normal tungsten carbide-cobalt roll composition, ... | 10/13/1987 |
| 4697320 | Roll for a rolling mill, method of producing the same and the rolling mill incorporating the roll A method of producing a long-life roll for a rolling mill manufacturing a rolled sheet having brightness. At least the surface of the roll barrel is made of steel containing carbide, the average grain size of which is not greater than 0.6 μm, and the are... | 10/06/1987 |
| 4674312 | Pilgering apparatus Pilgering apparatus for reducing a tube particularly of zirconium alloy. The reduction is effected by grooved annular dies. Each die has a recess in its bore extending between the surfaces on which the die is mounted on the shaft on which it is rotated. U... | 06/23/1987 |
| 4609577 | Method of producing weld overlay of austenitic stainless steel A method of producing a weld overlay on a ferrous base metal surface, by applying to the surface by electric arc welding a plurality of layers of an austenitic stainless steel filler of specific composition, and providing a flux which produces a substanti... | 09/02/1986 |
| 4548653 | Cast cold rolling roll and its method of manufacture The composite bimetallic roll for cold rolling obtained by casting comprises a heart metal constituted by a nodular or lamellar cast iron and a case metal constituted by a steel having a chromium content of 8 to 16% and a carbon content of 0.65 to 0.95%. ... | 10/22/1985 |
| 4546527 | Composite sleeve for use in rolling rolls for H-section steel and channel steel A composite sleeve for use in a hot-rolling roll for H-section steel and channel steel comprises a working layer adapted to contact the material to be rolled and composed of two layers, i.e., a first outer layer made of one of adamite with graphite, spher... | 10/15/1985 |
| 4507366 | Rolling mill roll for a hot train of rolls The object of the invention is to improve the performance of the rolls of roughing and finishing stands of a hot strip train or mill and in particular to retard as far as possible the banding phenomenon, namely the phenomenon of the incrusting of hard oxi... | 03/26/1985 |
| 4484959 | Process for the production of a composite metal part and products thus obtained The present invention relates to the production of metal parts whose core and surface must have different characteristics. Its subject comprises firstly a process for the production of a composite metal part by coating or hard-surfacing a metal core of low-all... | 11/27/1984 |
