Abstract: A brake drum for a vehicle includes a friction ring and a drum body. The friction ring has grooves arranged on a radial outer surface along a circumference, and a coating formed on the grooves. The drum body is cast onto the radial outer surface of the friction ring so that the grooves are filled with a material of the drum body. The grooves include first grooves and second grooves. A first axial segment is formed at the friction ring in which the first grooves are introduced so that the first grooves are inclined relative to a first axial end of the friction ring. A second axial segment is formed at the friction ring in which the second grooves are introduced so that the second grooves are inclined in a direction which is opposite to that of the first axial segment. Each of the grooves have undercuts.

Abstract: A brake drum for a vehicle includes a friction ring and a drum body. The friction ring has grooves arranged on a radial outer surface along a circumference, and a coating formed on the grooves. The drum body is cast onto the radial outer surface of the friction ring so that the grooves are filled with a material of the drum body. The grooves include first grooves and second grooves. A first axial segment is formed at the friction ring in which the first grooves are introduced so that the first grooves are inclined relative to a first axial end of the friction ring. A second axial segment is formed at the friction ring in which the second grooves are introduced so that the second grooves are inclined in a direction which is opposite to that of the first axial segment. Each of the grooves have undercuts.

Abstract: A thermal spraying method for coating an inner surface of a cylinder of an internal combustion engine or a piston engine. The method includes applying a thermal spray layer to the inner surface of the cylinder via a spray jet which is emitted by a spray torch and which includes a spray material, optically monitoring, via an optical sensor device, surroundings of the spray jet as defined by a space outside the spray jet, and assuming a coating process to be defective if the optical sensor device detects one or more particles of the spray material supplied to the spray torch in the surroundings monitored outside the spray jet and a parameter of the one or more particles exceeds a defined threshold.

Abstract: A thermal spraying method for coating an inner surface of a cylinder of an internal combustion engine or of a piston engine. The method includes applying a thermal spray layer onto the inner surface of the cylinder so as to obtain a coated inner surface, inserting an optical sensor device into the cylinder, and scanning the coated inner surface via the optical sensor device in order to detect at least one of a ridge and an indentation in the thermal spray layer. A thermal spray torch for the method includes an optical sensor device which is inserted into the cylinder and to scan the coated inner surface of the cylinder so as to detect at least one of a ridge and an indentation in the coated inner surface.

Abstract: A device for producing a cylinder crankcase using a low-pressure casting method or a gravity casting method. The device includes an outer casting mold which includes at least one mold part which, in an assembled state, forms a mold cavity that reproduces, for casting purposes, an outer contour of the cylinder crankcase. A region of the mold cavity forms a cylinder space of the cylinder crankcase. A dosing furnace contains a liquid metal. At least one gate is arranged geodetically below the mold cavity and via which the dosing furnace can be fluidically connected to the mold cavity. Sprue bushings project into the region of the mold cavity that forms the cylinder space of the cylinder crankcase. Each of the at least one gate is connected to one of the sprue bushings.

Abstract: A device for producing a cylinder crankcase using a low-pressure casting method or a gravity casting method. The device includes an outer casting mold which includes at least one mold part which, in an assembled state, forms a mold cavity that reproduces, for casting purposes, an outer contour of the cylinder crankcase. A region of the mold cavity forms a cylinder space of the cylinder crankcase. A dosing furnace contains a liquid metal. At least one gate is arranged geodetically below the mold cavity and via which the dosing furnace can be fluidically connected to the mold cavity. Sprue bushings project into the region of the mold cavity that forms the cylinder space of the cylinder crankcase. Each of the at least one gate is connected to one of the sprue bushings.

Abstract: A method for producing a cylinder running surface of a cylinder crankcase of an internal combustion engine includes thermally spraying a coating material comprising particles onto a cylinder inner wall of a cast cylinder crankcase using an inert gas as an atomizer gas so as to produce a coating. A mass feed rate of the coating material during the thermal spraying is 8 to 22.5 kg/h.