Abstract: An electrical steel strip or sheet with at least one thermo-hardenable, water-based hot-melt adhesive varnish layer provided on one of its flat sides, a method for producing such an electric steel strip or sheet, and a lamination stack made therefrom are disclosed. In order to be able to have an increased melt viscosity during the baking process, it is proposed that the thermo-hardenable, water-based hot-melt adhesive varnish layer also have a pre-cross-linking agent that bonds with the epoxy resin or with a mixture of epoxy resins, the pre-cross-linking agent being an organic amine with three amino groups, namely an organic triamine or a mixture of such organic amines.

Abstract: A method for producing thermomechanically produced hot strip products having improved mechanical properties is provided. A steel alloy is melted and adjusted so that a recrystallization during hot rolling at greater than 800° C. is suppressed. The melted steel alloy is cast into slab ingots and after being heated to a temperature above Ac3, the slab ingots are hot rolled until they reach a desired degree of deformation and strip thickness. The strip is then cooled to room temperature and is hardened by briefly reheating to a temperature above Ac3 and cooling again. The reheating takes place with a rapid temperature increase of more than 5 K/s and is maintained at the targeted temperature for a period of 0.5 to 60 seconds before cooling to yield the improved mechanical properties.

Abstract: An explosion-protected housing having a housing body, a frame part and at least two separate covers. The housing body delimits an interior space which is open at one side by means of a housing opening. The frame part has a circumferential web surrounding the housing opening. Extending within the circumferential web is a central web of the frame part that divides the housing opening into at least two opening portions. A cover abutment surface is formed, against which the covers bear in their closed position. An encirclingly closed flameproof gap is formed between each cover and the cover abutment surface when the cover is situated in the closed position and is detachably fastened by means of one or more connecting units to the frame part.

Abstract: An embodiment of the present invention relates to a composite structure with one or several polyurethane layers, which is substantially free of volatile organic compounds (VOC). In addition, the invention relates to the method of manufacturing such composite structure. Further, the invention relates to the use of such composite structure, in particular as artificial leather.

Abstract: A protective housing in explosion-protection-type pressure-proof encapsulation. At least one device for reducing explosive pressure is associated with the housing. The housing includes a first housing part having a first sealing surface and a second housing part having a second sealing surface, wherein, when the housing is in the closed pressure-proof state, a resilient seal is held between the first sealing surface and the second sealing surface so as to be elastically deformed, and, as a result, closes the space between the first sealing surface and the second sealing surface in a flame-proof manner in the event of an explosion inside the housing. The flame-proof arrangement can replace a planar gap between, for example, a surface of a cover and a surface of a housing part, which gap requires conformity to relatively narrow manufacturing tolerances.

Abstract: A tap hole filling device for an electric arc furnace (1) includes a pivot arm (30) pivotable between a parking position and an operating position, a pivot arm actuator (40), an actuator link mechanism (50), and a refractory filling material dispenser (60) attached to an end portion (31) of the pivot arm to dispense refractory filling material (S) from a dispensing opening thereof while the pivot arm is in the operating position. The actuator link mechanism includes a connector (51) that is moveable between a connecting position, where the connector connects the pivot arm and the pivot arm actuator such that the pivot arm actuator (40) can pivot the pivot arm between the parking position and the operating position in an automatic operation mode, and a disconnected position, where the connector does not connect the pivot arm and the pivot arm actuator, to enable a manual operation mode.

Abstract: A flame trap filter including a grid structure, wherein the grid structure determines grid openings which are bordered by intersecting strip sections, and/or wherein the grid structure is formed by a laid scrim. A method for producing a grid structure of a flame trap filter includes the step of allowing a substance to solidify on a substrate, in order to form at least one strip section of the grid structure. Alternatively or in addition, the method includes the step of compressing a material for the flame trap filter or a semi-finished product of the flame trap filter at points, e.g. by mechanically deforming the material or the semi-finished product, in order to form at least one strip section of the grid structure.

Abstract: A housing that can be provided on the inside with a lining, made of an open-pore material and preferably covering at least two sides of the housing, for the reduction of internal explosion pressure. In addition, or alternatively, a molded body made of the open-pore material, in particular a bonded fiber material, can be arranged in the housing. Methods are used to provide an assembly of an open-pore material and a flameproof body in order to create an assembly that has a higher temperature class and/or a higher flameproofing class than those for which the flameproof body is designed.

Abstract: A lower mandrel for a cap logo applicator includes a structure having a curved surface and a first end and a second end, an extension extending from the first end to the second end, and a first pad positioned on an upper surface of the structure. The first pad extends radially beyond both the first end and the second end and below a lower surface of the structure.

Abstract: A module for producing a housing, in particular a housing of the ‘flameproof enclosure’ protection type, is provided, wherein the housing surrounds an interior space suitable for accommodating components that can form ignition sources. The module establishes at least one module interior space, which is fluidically connected to the interior space of the housing via a connection opening. The module can be used to produce vented housings having different interior volumes.

Abstract: The present invention relates to a device for storing or conducting hydrogen, in particular a hydrogen tank or hydrogen line, wherein the device is constructed in multiple layers from an inner side oriented toward the hydrogen to an outer side, wherein a layer located further inside has a lower diffusion coefficient (D) for hydrogen than the respective subsequent layer Dinside<D2< . . . <Dn.

Abstract: The invention relates to an explosion-proof arrangement (10) with an explosion-proof housing (11) which has a wall opening (23) in a housing wall (12). The wall thickness (d) of the housing wall (12) is so small that it is not possible to form a thread there in order to screw in a connecting body (15) for a line to pass through or for receiving an assembly so as to ensure protection against flame transmission. According to the invention, a connecting body (25), which has a flange (38) with a flange face (39), is inserted into the wall opening (23). The flange face (39) delimits a flameproof gap (58) by way of the housing wall (12). The dimensions of a gap or intermediate space between the connecting body (25) and a boundary face (24) of the housing wall (12), which boundary face delimits the wall opening (23), are not important. The protection against flame transmission can be provided solely by the flameproof gap (58) between the flange face (39) and the housing wall (12).

Abstract: A cap logo applicator, and method of fabricating, includes a first mandrel having a front and a back, the first mandrel having a curved, non-cylindrical surface, and a relief space in the back such that when a cap is positioned on the first mandrel, a front of the cap is in contact with the non-cylindrical surface and a top of the cap extends over the relief space, and a second mandrel opposing the first mandrel and configured to apply pressure to the first mandrel. At least one of the first mandrel and the second mandrel includes a heater.

Abstract: An explosion-proof housing having a cover arrangement which includes two or more covers. The covers are adjacent to a flameproof gap in the housing body (11). A flameproof gap is likewise arranged between the individual covers. Special seals, more particularly in the form of a butt joint closure, are arranged on the remaining butt joints or other gaps and through-holes.

Abstract: An explosion-proof apparatus with an explosion-proof housing and a cooling device. The explosion-proof housing has a plurality of outer walls enclosing a housing interior. A pressure-relief arrangement of the cooling device has at least one pressure relief opening with at least one gas-permeable, flameproof pressure-relief body. The pressure-relief opening passes through at least one of the outer walls. The cooling device also has at least one heat sink which forms at least one heat sink wall part of one the outer walls and which, as a heat sink wall part of this outer wall, directly borders, on its outer face, the surrounding area and directly borders, on its inner face, the housing interior.

Abstract: A pressure relief device including a gas-permeable body to which a membrane adheres that is preferably impermeable to moisture. The membrane can be a rubber membrane that is formed by applying liquid rubber to the pressure relief body and, optionally, a component which supports the liquid rubber and surrounds the pressure relief body.

Abstract: A process for producing a coated electrical steel strip includes application of a pretreatment layer over a first flat side of a rolled electrical steel strip. The layer thickness of the pretreatment layer is in the range from 10 nm to 100 nm, in particular from 20 nm to 50 nm. The rolled electrical steel strip which has been coated with the pretreatment layer is then coated with an insulating lacquer layer over the pretreatment layer. The insulating lacquer layer is applied by roll application using a roll and no deliberate drying and/or crosslinking of the pretreatment layer is carried out after application of the pretreatment layer and before coating with the insulating lacquer layer.

Abstract: A high strength cold rolled steel sheet has a composition consisting of the following elements (in wt. %):C 0.08-0.14, Mn 2.5-3.0, Si 0.7-1.1, Cr 0.05-0.4, optionally Al?0.2, Nb?0.1, Mo?0.1, V?0.1, Ti?0.1, Ca?0.05, Cu?0.1, Ni?0.2, B?0.005, balance Fe apart from impurities. The steel has a yield ratio ?0.72 and a bendability (Ri/t) is ?2.0. A method of manufacturing the steel sheet and an automotive structural part comprising the steel sheet also is provided.

Abstract: A method for producing an ultra-high-strength hot-rolled structural steel includes producing a steel alloy with a carbon content not greater than 0.2%, avoiding a diffusive transformation of the austenite by achieving a transformation delay through the addition of manganese, chromium, and boron, and casting the steel alloy. The cast steel alloy is heated and hot rolled to form a steel strip which is then immediately hardened and mechanically straightened to produce mobile dislocations, wherein the boron, manganese and chromium delay diffusive transformation from an austenite structure to achieve formation of a martensite structure during the hardening. The steel strip is then annealed at a temperature between 100 and 200° C.