Class 72/221 - Plural passes spaced along axis of one roller of tool-couple

Subclass of Class 72 - Metal deforming
Definition: Subject matter including at least two groups of cooperating
No. of patents: 26
Last issue date: 08/07/2007

Number	Title	Issue Date
7251890	Method for producing wheel pans A method for producing a wheel pan includes cold-rolling a rectangular metal strip of a given uniform thickness by conical rolls into a semicircular ring, such that the thickness reduction on the outer edge of the curved strip is at least 20%, and the circumference ...	08/07/2007
7251978	Roll stand for producing plane roll strips having a desired strip profile superelevation The aim of the invention is to improve known roll stands (10) which are characterized by working rolls (1,2) of various diameters, in such a way that a strip is obtained which is largely free of tensions and undulations, has a desired strip profile sup...	08/07/2007
6647604	Continuous casting and rolling of multiple rods A rolling system has a die having a row of separate throughgoing passages for producing a plurality of continuously advancing and parallel hot metal strands and a plurality of pinch rollers for pulling the strands out of the die and moving them in a direc...	11/18/2003
6564608	Rolling method and line for rails or other sections Rolling method and line for rails or other sections starting from a steel bar, including a roughing step and a finishing step. The roughing step provides use of a two-high reversible roughing stand, or BDM (Break-Down Mill), associated with a reversible e...	05/20/2003
4779439	Method to roll multiple sections A method to roll multiple sections starting from a single round section, comprising the steps of: (a) passing the single round section between the rolls of a rolling mill to obtain a single bar including two substantially elliptical, united, twin sections...	10/25/1988
4720989	Method of and apparatus for rolling an I-beam blank An I-beam blank is rolled from a bloom by rolling into opposite edges of the bloom respective central triangular section notches of predetermined apex angle, apex radius of curvature, width, and height in a succession of roll passes. According to this inv...	01/26/1988
4494395	Hot-rolling plant A hot-rolling plant comprises forward and rear reversible coilers, a reversible finishing stand disposed between the coilers, and crop shears including upper and lower cutter cylinders. To permit trimming of the stock to be rolled between finishing passes...	01/22/1985
4471642	Replacement stand for rolling mill A rod, bar or section mill has a train of rolling mill stands, each of which is attached to a bed plate with which the stand is introduced into, and withdrawn from, the mill. The bed plate carries pedestals on which are secured guides; those guides can be...	09/18/1984
4457154	Control method for multi-strand rolling mill When two strand workpieces pass through a roll opening between two grooved working rolls on a roll stand so as to be rolled, the trailing end of one of them may leave the rolls and cause change in the roll separation. At that time mating bilateral screw-d...	07/03/1984
4420961	Method for producing beam blank for universal beam A rough rolling process for forming a beam blank for a universal beam from a flat slab, comprises the steps of making a triangular slit of a predetermined apical angle in each of longitudinal side edges of said flat slab and gradually deepening said slit ...	12/20/1983
4408475	Rolling mill rolls The present invention discloses an arrangement of grooves on the rolls of a rolling mill stand intended particularly for the rolling of beams, rails, channels, squares, diamonds, rounds, tie plates, joint bars and similar shapes wherein a plurality of gro...	10/11/1983
4404834	Rod shaped metal rolling apparatus and method A rod-shaped material is reciprocated along a conveyance line while being supported by a plurality of rollers. The material is allowed to pass through a rolling device disposed in the middle of the conveyance line a number of times for rolling operation d...	09/20/1983
4402206	Method of rolling slabs for the manufacture of beam blanks and a roll to be used therefor A method of rolling raw materials inclusive of slabs for the manufacture of beam blanks, and a roll to be used therefor, are disclosed. This method includes the steps of (a) subjecting a raw material, whose section consists of a web portion and a flange p...	09/06/1983
4393680	Method for rolling rails A method for rolling rails is provided wherein the final rolling operation includes processing of a rail blank in a leader pass universal mill stand and in a finishing pass universal mill stand. Both mill stands have horizontal rolls that form two roll pa...	07/19/1983
4393679	Method for producing blank for wide flange beam A blank for a wide flange beam is produced by feeding a flat slab to a break-down mill in which a box caliber, one or more forming calibers and a sizing caliber are formed by a pair of rolls, and rolling the material in a former stage of the rolling proce...	07/19/1983
4380916	Rolling apparatus for sequential rolling A material is allowed to reciprocate along a conveyance line by conveyance systems. During reciprocation, the material is allowed to pass through different shape apertures provided by a rolling mechanism in the direction perpendicular to the conveyance li...	04/26/1983
4362041	Method of forming beam blank A method of forming a beam blank, wherein: said method comprises: a process in which a plate-shaped slab is reduction-rolled in the widthwise direction by means of working rolls having box calibers each formed at the center thereof with a belly, whereby side s...	12/07/1982
4357819	Method and apparatus for simultaneously forming three uniform metal rounds Method and apparatus for splitting a single metal rod into three equal cross-section areas by passing the rod through pairs of rollers to form three connected equal areas, but not identically shaped strands, then applying a separating force to separate th...	11/09/1982
4314469	Rolling mill A rolling mill comprising a roll stand which supports rolls provided with roll passes for rolling a blank to be rolled which is fed along a rolling line, the roll stand being supported on a stationary base so as to move in axial directions of the rolls pe...	02/09/1982
4268948	Parting device A tool for forming parting grooves in a flat, plastically deformable workpiece, especially a continuously cast steel slab in a manner which seals the internal porosity of the slab in the regions which become exposed upon division, has a working portion in...	05/26/1981
4204416	Method of rolling section billets The invention relates to a method of rolling section billets in which billets interconnected by bridges are successively formed from a slab in a number of grooves defined by a plurality of transversely juxtaposed passes, with subsequent separation of bill...	05/27/1980
4201075	Method of rolling section billets A method of rolling section billets wherein a plurality of billets transversely interconnected by bridges are successively simultaneously formed from a slab in a number of grooves defined by a plurality of transversely juxtaposed grooves. The forming is e...	05/06/1980
4199970	Method and mill rolls for metal bar rolling The present invention relates to plastic working of metals and the reducing of a workpiece along its axis by a pair of shaped rolls with formation in the workpiece of a transitional length whose cross section gradually changes from a starting one to sever...	04/29/1980
4193283	Method of slitting a double or triple stranded bar In the high speed production of elongated metal bars, a method of slitting a double or triple stranded bar interconnected at a continuous node or nodes, in which the bar is rolled to reduce the cross-section of each strand equally, the compressive working...	03/18/1980
4184353	Rolling mill A rolling mill having a roll stand with back-up rolls and two cylindrical work rolls. The work rolls have roll-pass grooves associated in pairs with different roll-pass areas. The driving mechanism of the rolling mill is coupled to the back-up rolls which...	01/22/1980
3996781	Rolling mills A rolling mill is provided for rolling wire, light sections and tubular products having a fixed rolling axis and a plurality of roll stands arranged directly one behind the other and each of which has two driven work rolls extending parallel to one anothe...	12/14/1976

PatentStorm

Quotables

PatentStorm News

Class 72/221 - Plural passes spaced along axis of one roller of tool-couple