Abstract: A tiltable metallurgical vessel arrangement, in particular a steel making plant converter, has carrying trunnions arranged in bearings, one of the bearings being a fixed bearing and one being an expansion bearing, and bearing housings for the bearings; the bearing housings have supporting faces which rest on counter-supporting faces of a base-supported supporting construction; at least one of the bearing housings has two supporting faces arranged at a distance from each other and a strain measuring means connected to the bearing housing between the supporting faces thereof to indicate a sagging of said bearing housing under load.

Abstract: A plate mould for continuously casting steel has a carrying frame, and side and end walls with cooling devices. At least one side wall is movable transversely relative to the mould by separate apparatus. The end walls are each comprised of a holding plate, a supporting plate and a cooled copper plate and can be clamped between the side walls by spring clamping elements. Wedge-shaped noses are provided on the upper and lower edges of the supporting plate for engagement with a wedge-shaped groove in the pertaining holding plate and with a clamping piece, respectively.

Abstract: A dividing cutting machine includes a cutter boom pivotable about a horizontal axis, at least one cutter head disposed on the cutter boom, a loader deck hingedly connected to the frame of the dividing cutting machine pivotable about a horizontal axis and provided with movable gathering arms for continuously sweeping the mined material upwardly over the loader deck to conveying means. Stops mounted on the cutter boom and on the loader deck at locations spaced from their respective horizontal pivot axes have a height which precludes physical contact between the cutter boom and the gathering arms in each mutual pivotal position.

Abstract: A plant for the continuous surface treatment of work pieces comprises a plurality of treatment chambers arranged one behind the other and tightly connected to one another; each treatment chamber is movable transversely to the direction of transportation of the work pieces and at least part of the internal equipment provided in the treatment chambers is removable in longitudinal direction, i.e. parallel relative to the direction of transportation of the work pieces.

Abstract: A pickling hook arrangement for pickling bundled material has a first leg and a second leg to give it a U-like shape and a suspension device to which the first leg is secured. The second leg serves as support for the bundled material. At least the first leg is downwardly inclined for guiding off liquid. Connection devices are provided to connect the first leg with the suspension device, and covering devices are provided on the first leg and on the connection devices to protrude beyond the cross-section thereof to prevent liquid from dripping onto the bundled material.

Abstract: In a method of and an apparatus for treating metal melts with flush gas during continuous casting, the molten metal is led from a tundish having an outflow opening into a mold, while inert flush gas is supplied above the outflow opening of the tundish at a rate of between 30 and 300 Nl per minute, so that the upwardly rising gas bubbles prevent slag particles present on the surface of the metal bath in the tundish from being sucked into the metal stream.

Abstract: A tiltable-converter supporting mechanism with drawing hooks which engage with bearing bushing bolting pieces and are actuated by pressure medium cylinder means has self-locking bracing means holding the engaging drawing hooks in a locked position.

Abstract: A supporting and guiding arc for a cast strand has roller-carrying arcuate longitudinal carriers arranged in a stationary framework, which carriers support the strand at opposite sides. At least the roller-carrying arcuate longitudinal carriers arranged at one side of the strand are braceable relative to the framework under elastic deformation for adjustment to various strand thicknesses. All of the longitudinal carriers arranged at one side of the strand are connected to transverse carriers which are movably guided on drawing anchors secured to the framework, and the transverse carriers are fixable relative to the drawing anchors.

Abstract: In a method of continuously casting steel strands in continuous casting plants, casting powder admixed with at least one alloying component is continuously supplied to the casting level in the mould so that the alloying component is taken up by the strand surface.

Abstract: A driven roller assembly to be used for a continuously cast strand has a drive unit detachably connected to one end of the roller, and a holding means journaled on a strand guide stand and movable perpendicularly to the roller axis supports the drive unit, the roller being removable from the strand guide stand independently of the drive unit.

Abstract: A roller stand to be used in continuous casting plants comprises two strand guide parts arranged opposite each other so as to guide the strand between them, which strand guide parts are held together by drawing anchors. The roller carrying means of one of the strand guide parts are movable relative to the strand by piston driving means. Overload protection means are provided within the area of the piston driving means and spacers maintain the distance between the opposing rollers.

Abstract: A tiltable metallurgical converter arrangement, with a fixed bearing and an expansion bearing for the carrying trunnions, has bearing housings arranged on load cells that rest on a supporting construction designed as a sole plate. The bearing housings are secured relative to the supporting construction by adapted to accommodate tensile forces and connecting means arranged in a horizontal plane opposite each other. Thus a strictly vertical force impact on the load cells is guaranteed.

Abstract: A continuous casting plant has a guiding means for the strand. This guiding means, at its upper end, is provided with bolts which can be suspended in hooks on the supporting steel structure. The bolts are secured against being lifted out of the hooks by means of one or more latches which in their closed position engage with the bolts and are pivotably arranged on the supporting steel structure.

Abstract: The invention relates to a shield structure particularly adapted for longwall mining providing a protected area that effectively insures operator safety even if total collapse of the mine roof should occur. The prop supporting the load-bearing cap of the shield is inclined rearwardly with respect to the mine face, and a pair of tension links that are pivotally connected to each other and are acted upon by a hydraulic cylinder in a direction transverse to the tension links, provide a structure which will ensure a widened (though shorter) protected area in which an operator may reside even upon complete roof collapse. The widening of the area helps insure that any fallen material from the roof will not harm an operator in the protected area.

Abstract: A swing drive, in particular a reciprocating drive for moulds in continuous casting plants, has a balance beam structure with which a lifting rod actuated by an overhung crank engages. The shaft of the overhung crank is eccentrically mounted in a driving toothed wheel of the swing gear and the crank radius is equal to the distance between the axes of the driving toothed wheel and the crank shaft. The crank shaft is adjustable in the direction of the crank circle and the crank pin is pivotable relative to the axis of the driving toothed wheel.

Abstract: A strand guiding apparatus to be used in a continuous casting plant has a frame for the supporting devices of the strand, which frame is actuated by an adjustment means having a displacement ruler detachably connected to the frame by means of a quick lock. Upon release of the quick lock and retraction of the displacement ruler, the frame can be removed vertically upwardly.

Abstract: A process and an apparatus for continuously casting strands of unkilled or semi-killed steel having a product of [%C] .times. [%O] that is less than 0.002, preferably less than 0.0015 due to deoxidizing prior to casting, a carbon content of between 0.02 and 0.20%, an Al content not exceeding 0.01% and a Si content not exceeding 0.05%, wherein the steel is cast from a tundish through a casting tube that is immersed in the mould and flush gas is introduced into the casting tube and moved on together with the steel which leaves said casting tube via two lateral, upwardly inclined openings. The ascending gas bubbles are deflected by means of a guiding plate and move through a gap formed between said guiding plate and the walls of said mould, flushing out CO-bubbles forming at the front of solidification and thus providing for an edge zone that is free from blow-holes.

Abstract: A strand guiding means has at least two framing parts arranged in pairs and opposite each other, which are connected by drawing anchors. Upon each of the drawing anchors an outer and an inner bushing, having corresponding helical sliding faces and an angle of inclination that is smaller than the pertaining angle of friction, are arranged. Each one of the inner bushings is rotated relative to the outer bushing by a pressure medium cylinder, whereby one of the two framing parts is movable and the strand guiding rollers accommodated by the framing parts are brought into and out of an engagement position.

Abstract: A process for producing surface-decarburized steel sheets or plates involves the formation of a package or pile by alternately superimposing decarburizing high alloy chromium steel sheet layer(s) and the steel sheets(s) or plate(s) on each other. Edge welding seams are applied to the package or pile, which is then heated to rolling temperature and rolled, subsequently annealed in the carbide-forming range, and then separated.

Abstract: A method of reducing iron ores in a shaft furnace. The furnace has an enlarged lower portion which is joined to an upper portion by an intermediate portion of reduced cross-sectional area. Iron ores are introduced in the upper portion of the furnace without addition of fuel (such as coke), and hot reducing gases are produced outside the furnace through partial combustion. The hot reducing gases and carbon in powder form are introduced into the lower portion of the furnace in a generally downward direction toward the iron bath in the lower portion of the furnace, and heat produced by electric energy is supplied to the furnace lower portion. Exceptionally accurate control is provided of the amount of carbon to the iron ore is very rapid.