Abstract: A bearing component such as a bearing ring includes a metallic base body and at least one alloy steel coating on the base body, the coating being applied to the base body by deposition welding. The base body is preferably non-alloy steel or cast iron, and the alloy includes at least one carbide-forming transition metal such as niobium, tantalum, zirconium, titanium, hafnium, tungsten, molybdenum, vanadium, or manganese. The coating can form a raceway of the bearing component or a structural element such as a flange. Also a method of forming such a bearing component is provided.

Abstract: A bearing component such as a bearing ring includes a metallic base body and at least one alloy steel coating on the base body, the coating being applied to the base body by deposition welding. The base body is preferably non-alloy steel or cast iron, and the alloy includes at least one carbide-forming transition metal such as niobium, tantalum, zirconium, titanium, hafnium, tungsten, molybdenum, vanadium, or manganese. The coating can form a raceway of the bearing component or a structural element such as a flange. Also a method of forming such a bearing component is provided.

Abstract: A production method produces a precision rail having a raceway region. The material for producing at least one part of the raceway region is deposited onto a component by laser beam build-up welding and/or electron beam build-up welding. The methods results in short processing times being achieved when the precision rails concerned are produced.

Abstract: A bearing component such as a bearing ring includes a metallic base body and at least one alloy steel coating on the base body, the coating being applied to the base body by deposition welding. The base body is preferably non-alloy steel or cast iron, and the alloy includes at least one carbide-forming transition metal such as niobium, tantalum, zirconium, titanium, hafnium, tungsten, molybdenum, vanadium, or manganese. The coating can form a raceway of the bearing component or a structural element such as a flange. Also a method of forming such a bearing component is provided.

Abstract: A rolling-element bearing includes an inner ring made of steel and having an inner-ring raceway, an outer ring having an outer ring raceway, and ceramic rolling elements which roll on the inner-ring raceway and on the outer-ring raceway. The inner ring has been subjected to a heat treatment to harden it. The heat treatment is concluded with the performance of a final heat-treatment step at a predetermined temperature. In the inner ring, compressive residual stresses are formed in an outer layer by cold working in the region of the inner-ring raceway. The inner ring also has been subjected to a bluing treatment.

Abstract: A method for manufacturing a raceway element of a bearing assembly includes hardening a raceway element having a raceway surface by at least partially heating the raceway element, deep rolling the raceway surface using a first rolling element, and then deep rolling the raceway surface using a second rolling element. The first rolling element has at least one different dimension than the second rolling element. In the resulting raceway element, compressive residual stresses of at least 400 MPa are present at a depth from the raceway surface of 200 ?m or less, and between the raceway surface and a depth of 100 ?m from the raceway surface, the amount of the compressive residual stresses changes by 500 MPa or less.

Abstract: A method for manufacturing a raceway element of a bearing assembly includes hardening a raceway element having a raceway surface by at least partially heating the raceway element, deep rolling the raceway surface using a first rolling element, and then deep rolling the raceway surface using a second rolling element. The first rolling element has at least one different dimension than the second rolling element. In the resulting raceway element, compressive residual stresses of at least 400 MPa are present at a depth from the raceway surface of 200 ?m or less, and between the raceway surface and a depth of 100 ?mm from the raceway surface, the amount of the compressive residual stresses changes by 500 MPa or less.

Abstract: A method for increasing the resistance of a blued layer of a component includes partially or completely immersing a component having the blued layer into a solution containing potassium dichromate. An increase of the resistance of the blued layer of the component to chemical corrosion and/or mechanical loads results therefrom.

Abstract: A method for manufacturing a rolling-element bearing includes forming an inner ring from a steel having a sulfur content of 0.002 to 0.015 mass % and an oxygen content of less than 15 ppm, subjecting the inner ring to a hardening heat treatment that ends by performing a final heat treatment step at a predetermined temperature, cold working the inner-ring raceway to generate compressive residual stresses at least in a surface layer of the inner-ring raceway, subjecting the inner ring to a bluing treatment and subjecting the blued inner ring to a thermal post-treatment process at a temperature below the predetermined temperature of the final hardening heat treatment step. The resulting rolling-element bearing may exhibit compressive residual stresses having an absolute value of at least 200 MPa at 0.1 mm beneath the outer surface of the inner-ring raceway and a maximum value of 1500 MPa or less throughout the inner ring.

Abstract: A rolling-element bearing includes an inner ring made of steel and having an inner-ring raceway, an outer ring having an outer ring raceway, and ceramic rolling elements which roll on the inner-ring raceway and on the outer-ring raceway. The inner ring has been subjected to a heat treatment to harden it. The heat treatment is concluded with the performance of a final heat-treatment step at a predetermined temperature. In the inner ring, compressive residual stresses are formed in an outer layer by cold working in the region of the inner-ring raceway. The inner ring also has been subjected to a bluing treatment.

Abstract: A device and method for treating a workpiece that is formed completely, or at least in a region of the surface to be treated, of a ceramic material. The device and method utilize a treatment element configured to transmit a substantially shock-free contact force to a surface of the workpiece to generate or increase compressive residual stresses in the workpiece.

Abstract: A method for manufacturing a rolling-element bearing includes forming an inner ring from a steel having a sulfur content of 0.002 to 0.015 mass % and an oxygen content of less than 15 ppm, subjecting the inner ring to a hardening heat treatment that ends by performing a final heat treatment step at a predetermined temperature, cold working the inner-ring raceway to generate compressive residual stresses at least in a surface layer of the inner-ring raceway, subjecting the inner ring to a bluing treatment and subjecting the blued inner ring to a thermal post-treatment process at a temperature below the predetermined temperature of the final hardening heat treatment step. The resulting rolling-element bearing may exhibit compressive residual stresses having an absolute value of at least 200 MPa at 0.1 mm beneath the outer surface of the inner-ring raceway and a maximum value of 1500 MPa or less throughout the inner ring.

Abstract: Disclosed is a method for detecting impurities, especially gases in a first material, particularly metallic materials. According to said method, the impurities contained in the first material are transferred into at least one second material, said impurities preferably being concentrated in the second material. The impurities are then detected, preferably quantitatively determined, in the second material. The data obtained in said manner makes it possible to draw conclusions about the presence of the impurities in the first material. Preferably, the concentration of the impurities in the first material is quantitatively determined in an arithmetic fashion.

Abstract: A process for producing ceramic bearing components in which a material mixture is produced from an organometallic compound as a preceramic precursor and from silicon in element form or in the form of an alloy as a chemically reactive filler. The material mixture is subjected to reaction pyrolysis for conversion into a ceramic material.

Abstract: The invention relates to a process for the production of ceramic bearing components in which a mixture of a metallo-organic compound and a chemically reactive filling substance is subjected to a pyrolysis reaction and the resulting product.

Abstract: A process for producing a component of metal includes a) carrying out a heat treatment to harden the component, which ends with a heating process, especially with a tempering or microstructural transformation process, at a given temperature (TE); b) carrying out at least machining of the component at room temperature (TU) in order to provide its desired geometrical shape; and c) subsequent heating of the component to a temperature (T) which is greater than room temperature (TU).

Abstract: An electrolysis apparatus for producing halogen gases from aqueous alkali halide solution, having a number of plate-like electrolysis cells which are arranged beside one another in a stack and are in electrical contact and which each have a housing comprising two half-shells of electrically conductive material with external contact strips on at least one housing rear wall, and in each case having two essentially flat electrodes (anode and cathode) and the anode and cathode being provided with apertures like venetian blinds for the electrolysis starting materials and the electrolysis products to flow through, being separated from one another by a dividing wall and arranged parallel to one another and being electrically conductively connected to the respective associated rear wall of the housing by means of metal reinforcements, is intended to provide a solution with which, even at current densities above 4 kA/m2 and correspondingly increased production of gas in the boundary layer, it is possible to operate wh

Abstract: When applied to an electrolyser for producing halogen gases from aqueous alkali halogenide solution using several plate-like electrolysis cells arranged side by side in a stack whilst electrically connected, each cell being encased in two semi-shells made from electroconductive material with contact strips on the outer side of at least one of the casing's rear walls, the anode and the cathode being separated from one another by a partition, arranged parallel to one another and electrically connected to the rear wall of the respective casing via metal reinforcements, the current-carrying surface should be as large as possible to avoid uneven current distribution. This is achieved by the fact that the metal reinforcements are in the form of solid plates (10) which are flush with the contact strips (7) and whose side edges run up the entire height of the rear wall (3A, 4A) and the anode (8) or cathode (9).