Abstract: An upsetting press for reducing the width of rolled material, particularly for reducing the width of slabs in hot wide strip breaking-down trains. The upsetting press includes tool support members arranged on both sides of the slab. The tool support members support pressing tools which face toward each other. For providing a reduction drive, each pressing tool with the corresponding tool support member can be moved essentially in the direction of reduction by at least one rod system actuated by a crank drive. The crank drive is mounted on a crank housing. At one feeding drive acts on the tool support member essentially in the slab feeding direction.

Abstract: A method and an arrangement for controlling the thicknesses of webs and flanges of beam sections in universal rolling mill stands. A gage-meter circuit is provided for each roll of the universal rolling mill stand. In order to maintain a certain ratio of web elongation to flange elongation, the gage-meter circuits are coupled to each other for a mutual influencing. The adjustment can be effected in dependence on a rolling schedule.

Abstract: A method and an arrangement for manufacturing hot-rolled steel strip from continuously cast initial materials in continuously successive work steps, wherein the continuously cast initial material is cut after solidifying to a certain length, is heated in a soaking furnace to rolling temperature and is introduced into a finishing rolling mill train for rolling out. The continuously cast initial material is introduced after being heated to a multiple-stand, reversible finishing rolling mill train and a coilbox connected downstream to the finishing rolling mill train.

Abstract: Coking system, wherein the coking blends particularly based on hard coal, are fed batchwise to a reactor (1), which is heated indirectly by heat recovery in regenerators (I, II) or recuperators, whereby the reactor is built as a high-capacity coking reactor (100), several high-capacity coking reactors are combined to form a reactor block and the high-capacity coking reactors are built as mutually independent modules, whereby each module can be operated or optionally replaced independently of the neighboring modules, with little or no impairment of the operation of the neighboring modules. The individual reactors are independently operatable in terms of statics and heat supply. The regenerators, or recuperators (I, II, R, R') can be arranged laterally or underneath the reactor chamber. Neighboring reactors can have a common intermediate wall (2). The reactor chambers have a width of at least 0.7 m, a height of at least 8.5 m and a length of at least 18 m.

Abstract: To make hot rolled steel strap from strap like cast starting material cast pieces can be first cut from the solidfying casting after the casting process is completed. Then these cast pieces are guided to and stored in an oven where they are brought to and maintained at the rolling temperature. The cast pieces are fed in succession into the rolling mill. Then the cast pieces are stored there at the rolling temperature until the rolling process begins. A number of cast pieces are produced as raw products in our invention and stored until the rolling of these individual cast pieces starts. the casting is continuous and occurs also during the rolling operation. Because of the intermediate storage provided by the oven significant differences can exist between the casting time and the rolling time. Assembly and maintenance of the rolling mill, e.g. roll changing, can be performed in a pause of the roll cycle which includes the rolling time.

Abstract: A process and apparatus for making hot-rolled steel strip from a striplike continuously cast starting material uses successive processing steps in which the striplike cast starting material after solidification is brought to the hot rolling temperature and fed to a multi-stand rolling mill for rolling to the finished rolled product. A continuous casting unit supplies the multi-stand rolling mill. The rolling to the finished rolled product occurs continuously in three or four roll stands to achieve the largest possible reduction per pass. The first two roll stands operate with an approximately maximum rolling moment and a large working roll diameter.

Abstract: A method of and an apparatus for producing wide strip at increased production rates connects the individual lengths of rough-rolled or continuously caused rough strip end to end to form a continuous band which is passed at constant speed through the working rolls of a hot-rolling finishing line. Downstream of the hot-rolling stands, the wide hot-rolling band is subdivided into lengths of wide strip which can be coiled on separate coilers.

Abstract: A metallic strip is hot-rolled in a succession of roll stands arranged in a row by passing the strip longitudinally in a travel direction through the stands. The strip is then compressed in the upstream stands to substantially reduce its thickness measured perpendicular to the travel direction and parallel to the strip while substantially increasing its width measured perpendicular to the travel direction and transverse to the strip. Then in the downstream stands it is compressed and tensioned without substantially increasing its width to level it and stretch it longitudinally in the travel direction. With standard steel strip this critical thickness is about 12 mm. The local band thickness is measured downstream of the upstream roll stands and the furthest downstream stand of the upstream stands is operated to eliminate any nonuniformities in thickness thus detected. The nonuniformities are detected by comparing the local band thicknesses detected with standard set-point thicknesses.

Abstract: Glowing coke descending through a cooling duct in a coking plant is quenched by two gas flows respectively traversing an upper compartment and a lower compartment of the duct, the two compartments meeting at a restricted gate for the passage of the coke. At least the lower gas flow, passing in countercurrent to the descending coke charge, is also circulated through a drying and preheating oven for coal to be fed to a coke-oven battery of the plant, thus containing some water vapor. When the upper flow is also constituted by coal-drying gas, it is passed downward through the upper compartment in order to reduce the height of a high-temperature zone in which combustion and thus loss of coke could occur. The coke gate is formed by a funnel-shaped upper partition and an upwardly pointing conical lower partition between which a scavenger gas passes in cross-flow.

Abstract: A method and an apparatus are disclosed for drying and preheating coking coal particles of mixed sizes in a flight stream tube. A stream of hot gas in which different-size particle fractions are entrained, is advanced through the tube. At one or more locations it is split up into two flows, one containing the smaller fractions and the other containing the coarser fractions. The coarser fractions are slowed and readmitted into the flow having the smaller fractions, counter to the direction of advancement of this flow.

Abstract: A device for opening, closing and cleaning fill holes of a coke oven comprises a self-supporting carrying frame extending above the fill holes and supporting a runway for an overhead crane and further supports spring-biased bell seals for respective fill holes; a manipulation unit is suspended on the crane and includes a vertical thrust drive and a rotary drive coupled respectively to a manipulation head which is driven into engagement with actuation means for respective bell seals to selectively open and close the bell and to rotate simultaneously cleaning knives in each fill hole.

Abstract: The gas-tight closure comprises a thin walled tubular piece projecting from a feeding duct into a filling space, a thin walled conical jacket having its larger bottom base provided with a rigid seal reinforcing member cooperating with the lower rim of the intake tubular piece. The outer periphery of the reinforcing member is slanted about a small angle to snugly fit into the tubular piece and adjust the form thereof when upward pull is exerted upon the conical jacket by means of an actuation rod passing outwardly through the wall of the feeding duct. The actuation rod has preferably the form of a hollow shaft which accommodates the manipulation rod of a scraper projecting radially below the reinforcing member into the filling space. The outside portion of the actuation rod is provided with a control device in the form of clamping plates cooperating with abutment plates resting on the guiding sleeve for the actuation rod. The clamping plates are manipulated by means of separate levers.

Abstract: Coking coal is preheated and dried by passing hot carrier gas into a generally vertical flash drying pipe, then passing comminuted coal into the same pipe, the carrier gas being blown with a flow speed to move the coal upwards in the pipe and passing at about the midpoint of the pipe a mixture of hot combustion gases and additional hot recycle gas branched off from the other hot waste gas line into the pipe so as to cause further heating and moving of the coal, the further heating being carried out in a uniform and gentle manner. At the end of the pipe the coal and carrier gas are separated and the coal is recovered while the waste gas are recycled into a blower and therefrom into the vertical flash drying pipe with a branch leading part of the recycle gas into a mixing chamber with the combustion gases so as to lower the temperature of the combustion gases when the same are passed into the pipe.

Abstract: A process and an apparatus for the drying and preheating of coking coal is described, in which a coarser grain fraction of the starting coal is separated out at least at one location in a flight stream tube through which the coal and a heat carrier gas are fed, and in which this larger grain fraction is subsequently reintroduced into the main stream containing only the finer grain fraction of the coal and the predominant portion of the heat carrier gas. The method and the apparatus through which the method may be carried out allow for a single-step process for both drying and preheating of the coal, make it possible to substantially reduce the length of the flight stream tube necessary, and increase the uniformity of the degree of pretreatment of the variously-sized fractions of the starting material.

Abstract: Method for charging a coke oven chamber. Where the chamber is charged through a single charging hole with a stream of flowable preheated particulate coal at a flow rate of between substantially 8-20 tons per minute. The coal flows sufficiently in the chamber to assure filling of the chamber to substantially 100% of the volumetric capacity of the same. Due to the flowability of the preheated coal the charge is self-leveling.

Abstract: Coal is dried by passing it successively to two tubular flow-through circulation heating elements together with a heat carrier gas, withdrawing the partially dried coal emanating from the first heating element and passing it into the inlet end of the second heating element and recovering the substantially dry coal from the gas and coal mass emanating from the second heating element, the hot vapors received from the outlet end of the first heating element being recirculated after mixing them with fresh combustion gases into the second heating element and the heat carrier gas emanating from the second heating element after separation of the coal therefrom being passed after mixing with fresh combustion gases into the first heating element.

Abstract: In a coking process wherein coal is subjected to coking in chamber furnaces by means of combustion of a fuel gas in the heat flues of the furnace and transfer of the generated heat through the walls of the furnace, the heat supply is effected, during the entire course of the coking operation, according to a preestablished programmed control scheme related to a uniform or mean rate of heat supply, the supply of heat being at a maximum at the commencement of the coking operation and being gradually reduced during the continuing coking operation.

Abstract: A cokable substance such as coal is admitted into a coking chamber. A quantity of heat which is sufficient to cause coking of the cokable substance is supplied to the chamber during preselected time intervals within the coking period in which coking of the cokable substance progresses in response to the supply of heat. On the other hand, during other time intervals within the coking period in which coking of the cokable substance is essentially unaffected by the supply of heat, the quantity of heat supplied to the chamber is reduced to a level below that required to sustain coking of the cokable substance during the preselected time intervals. In this manner, savings in energy may be realized. The supply of heat to the chamber during those time intervals in which coking of the cokable substance is unaffected by the supply of heat may be discontinued completely.

Abstract: An arrangement for regulating the introduction of substances into chambers is disclosed and is particularly well-suited for the feeding of coal into coke ovens. The arrangement includes a chamber which is to be filled to a predetermined level and a feeding device is provided for feeding material into the chamber. The feeding device has a switch which stops the introduction of the material to the chamber when the level of the material reaches the predetermined level. The switch for the feeding device is electrically connected with a differential pressure switch which is actuated upon the generating of a predetermined pressure differential across it. The requisite pressure differential is generated by introducing pressurized gas into the chamber and an air compressor may be provided for this purpose. A sensing conduit, which is connected with one terminal of the differential pressure switch, extends into the chamber and has an end positioned at the predetermined level to which the chamber is to be filled.

Abstract: A method for inhibiting dust formation while feeding coal into a coking chamber, comprising preheating coal and subsequently contacting the coal with an aqueous solution of 30-70% by weight of waste sulfite liquor in amounts of about 0.5 to 1.0 parts by weight of said solution per 1000 parts by weight of said coal.