Abstract: The invention is concerned with a compression molding device (1) with a tool (3) generating at least a part of the work-piece geometry. At least one pressure measuring means (5) and/or at least one pressure space (4) is located directly below the work-piece associated surface (3.3) of the tool (3). Besides this, the work piece (3) selectively exhibits at least one first part (3.1) which is a tool template generating the shape of the work piece and a second part (3.2) forming the base body, wherein a measuring strip (6) is provided between the tool template (3.1) and the base body (3.2). As an optional refinement, the measuring strip (6) is an elastic intermediate layer with a smaller modulus of elasticity than the base body (3.2).

Abstract: Processes for manufacture of metal components with high hardness and plasticity by deforming with high degree of deformation of metals, in particular steels, of which the deformation leads to a hardening by TWIP (Twinning Induced Plasticity) or SIP (Shearband Induced Plasticity) Effect, wherein the metal after the final step of annealing or crystallization annealing is deformed in at least one step into a semi finished product or the finished metal component, wherein the total elongation is in the range of 10 to 70%, as well as semi finished products, in particular continuous sheets, of steel with TWIP (Twinning Induced Plasticity) or SIP (Shearband Induced Plasticity) Effect, wherein the semi finished product exhibits a tensile strength of greater than 800 MPa and an elongation of greater than 35%.

Abstract: The invention relates to an electric arc wire burner for spraying an electric arc, comprising at least two burner tubes (3) for feeding electrodes which are embodied in the form of wire (5). Said electrodes are guided through the burner tube (3) in the direction of the surface of the object which is to be coated. The wire (5) is guided by a deflection device (7) comprising a number of rotationally mounted guiding elements and/or sliding elements (8) and the wire (5) is deformed in an elastic area.

Abstract: Deforming tool and process for manufacturing thereof in the deformation of work pieces the outer force acts on the deforming tool and/or the work piece, which causes a flow of the work piece material and its plastic deformation into a shape determined by the tool shape. Therein the tool is subjected to high friction wear forces. In the framework of the ever shorter production cycles it is also necessary that deforming tools must be produced ever more rapidly, wherein their friction wear resistance must be maintained to the greatest extent possible. The inventive deforming tool includes a lower and an upper tool, wherein lower and/or upper tool include a shape determining shell and a backfill for supporting thereof, wherein lower and/or upper tool are comprised at least in part of laminated material layers or powder particles joined to each other, wherein the deforming tool includes an elastic intermediate layer between lower and/or upper tool (backfill) and the shape determining shell.

Abstract: Hard mechanical coatings applied by thermal spray application onto softer surfaces frequently exhibit insufficient adhesion, so that undesired defoliations occur. It is the task of the present invention to provide a coating with optimal mechanical load bearing capacity and adhesion, as well as a simplified process for production thereof. The task is solved in that a gradient layer is applied by arc wire spraying upon a surface, wherein during the spray application at least one of the process parameters (a) current strength or voltage of the arc or (b) gas pressure of the carrier gas is varied.

Abstract: A motor vehicle having a stainless supporting frame structure or a stainless body-in-white, including a supporting frame structure and flat body components mounted thereon, the supporting frame structure being formed of rust-resistant steels as well as light metal alloys and/or plastics and the flat body components being formed of rust-resistant steels, light metal alloys and/or plastics, the surface of the supporting frame structure or the body-in-white being free of anti-corrosion coating or anti-corrosion painting. In addition, a method for manufacturing a motor vehicle having a corrosion-resistant body-in-white includes the steps of: manufacturing a supporting frame structure by joining and/or welding together rust-resistant steels; and mounting flat body components and/or body panels made of light metals, plastics, or rust-resistant steels, thereby forming the body-in-white.

Abstract: The invention is concerned with a compression molding device (1) with a tool (3) generating at least a part of the work-piece geometry. At least one pressure measuring means (5) and/or at least one pressure space (4) is located directly below the work-piece associated surface (3.3) of the tool (3). Besides this, the work piece (3) selectively exhibits at least one first part (3.1) which is a tool template generating the shape of the work piece and a second part (3.2) forming the base body, wherein a measuring strip (6) is provided between the tool template (3.1) and the base body (3.2). As an optional refinement, the measuring strip (6) is an elastic intermediate layer with a smaller modulus of elasticity than the base body (3.2).

Abstract: A melt-infiltrated, fiber-reinforced composite ceramic containing high-temperature-resistant fibers, in particular fibers based on Si/C/B/N, which are reaction-bonded to a matrix based on Si and also a process for producing such a composite ceramic are described. The silicon melt which is used for the melt infiltration contains additions of iron, chromium, titanium, molybdenum, nickel or aluminum, with particular preference being given to a silicon melt containing from about 5 to 50% by weight of iron and from about 1 to 10% by weight of chromium. This gives a simplified production process compared with conventional silicon melt infiltration and improved properties of the composite ceramic (FIG. 1).

Abstract: The invention relates to a process for producing a fiber composite material containing fibers with a high hot strength, in particular based on carbon, silicon, boron and/or nitrogen, a pressing compound being produced from fibers, a binder and, if appropriate, fillers and/or additives, which is then pressed in a press mold to form a green body. Various pressing compounds are produced, which contain fibers of different qualities and/or in different proportions, and the press mold is filled with the various pressing compounds in a number of successive steps. The invention also relates to a fiber composite material of this nature.

Abstract: A method for manufacturing a crankshaft for motor vehicles with passages being provided in the crankshaft for receiving lubricant. Prior to the casting process, place holders, which may include formed parts having cavities alone and/or together with a core, are inserted into the mold to form passages for receiving lubricant.

Abstract: A reinforcing fiber, in particular for fiber composite materials, has a core which is provided with a layer of a pyrolysable binder. A coating of pyrolytic carbon or sugar is provided between the core and the layer fiber strands are provided with reinforcing fibers of this type and fiber strands are coated in this way. Fiber composite materials can be prepared with these reinforcing fibers. Processes for producing reinforcing fibers and composite materials involve coating fiber strands.

Abstract: A method for surface working a tribological coating of a supereutectic aluminum-silicon alloy or an aluminum-silicon composite material with a coating structure includes machining the surface dry, without lubricant, in a one-step process, with a cutting tool having a cutting material containing diamond. The surface treating may be followed by a one-step finish honing or one-step texturing process.

Abstract: A melt-infiltrated, fiber-reinforced composite ceramic containing high-temperature-resistant fibers, in particular fibers based on Si/C/B/N, which are reaction-bonded to a matrix based on Si and also a process for producing such a composite ceramic are described. The silicon melt which is used for the melt infiltration contains additions of iron, chromium, titanium, molybdenum, nickel or aluminum, with particular preference being given to a silicon melt containing from about 5 to 50 % by weight of iron and from about 1 to 10% by weight of chromium. This gives a simplified production process compared with conventional silicon melt infiltration and improved properties of the composite ceramic.

Abstract: A material wire for producing wear-resistant and tribologically favorable surface coatings from a supereutectic Al/Si alloy by thermal spraying. The material wire is a filling wire that has a sheath made of metallic aluminum and a filling made of one or more additional alloy components.

Abstract: A material wire for producing wear-resistant and tribologically favorable surface coatings from a supereutectic Al/Si alloy by thermal spraying. The material wire is a filling wire that has a sheath made of metallic aluminum and a filling made of one or more additional alloy components.

Abstract: The invention relates to a process for producing a component from an Al2O3/titanium aluminide composite material. To produce the component, a shaped body is pressed from a starting mix of titanium, in particular as an oxide, carbon and/or its precursors, fillers and binders. At a conversion temperature, the shaped body is subjected to a heat treatment in order to form a pressure-stable sacrificial body. In the process, the filler and, if appropriate, the binder is/are also removed by thermal means. The sacrificial body is filled with aluminum and/or an aluminum alloy under pressure. The filling takes place at a filling temperature which is above the conversion temperature. Then, the temperature is reduced to a transformation temperature, the materials of the filled sacrificial body and the aluminum reacting through a solid-state reaction, below the filling temperature, to form an Al2O3/titanium aluminide composite body.

Abstract: A component is made, in regions, of a ceramic-metal composite material. A porous sacrificial body produced from ceramic precursors is filled with softened metal and/or a metallic alloy at a predeterminable filling temperature at or above the softening temperature of the filling metal and under superatmospheric pressure. The filled sacrificial body is heated to or above a reaction temperature which is higher than the filling temperature, where a reaction between the filling metal (FMe) and the metal of the ceramic of the sacrificial body (CMe) is carried out, forming the ceramic-metal composite material comprising a ceramic phase and a metallic phase. The ceramic phase comprises CMemBx and/or CMenCy and/or CMeoCN and FMepO3, and the metallic phase comprises an intermetallic compound of a metal of the ceramic (CMe) and a filling metal (FMe). The sacrificial body is filled with the filling metal (FMe) during pressure casting of the component.

Abstract: The present invention relates to a method for the surface working of a tribological coating of a supereutectic aluminum-silicon alloy or an aluminum-silicon composite material with a coating structure, wherein the surface is reworked after the production of the coating. Provision is made according to the invention that the surface is machined dry, without lubricant, in a one-step process, a cutting tool with a cutting material containing diamond being used. This can be followed by an additional working process. Preferably a combination process of dry machining and one-step finish honing or one-step texturing by radiation is provided.

Abstract: A method for manufacturing a brake rotor which includes a disc-shaped carrier and friction rings arranged on or on top of the carrier, so that the friction rings and carrier form a single piece construction. The carrier and friction ring(s) are separately molded into pre-forms, subsequently joined and finished formed in a press tool. The carrier and friction rings are made from carbon/carbon materials and ceramic materials respectively. The carrier has a hat-shaped cross-sectional shape with a flanged outer edge and the friction rings are attached to each side of the flanged edge of the carrier. The brake rotor may be directly mounted onto the wheel flange via the carrier using bolts.

Abstract: A process for producing a ceramic-metal composite, includes (1) mixing TiO2, and optionally Ti, with at least one of a boron-containing or carbon-containing material to give a green body mix; (2) heat treating the green body mix to a temperature from 900° C. to 1900° C. and below a temperature which leads to an autocatalytic reaction; (3) carrying out an exchange reaction between the material and the TiO2 to give a reaction product comprising at least one of TiBx and TiCy, wherein 0≦x 23 2 and 0≦y≦1; (4) producing a porous green body from the reaction product; (5) filling the porous green body with liquid aluminum after the exchange reaction; and (6) carrying out a reaction between the reaction product in the green body and the aluminum to form the ceramic-metal composite comprising a ceramic phase selected from the group consisting of TiBx-, TiCy-, TiCN- and Al2O3 and a comprising a metallic phase comprising an intermetallic compound of Ti and Al.