Abstract: A method for manufacturing a sliding tappet of a valve train of an internal combustion engine may include the steps of: providing a main body; applying a coating at least on a contact surface of the main body configured for contacting an associated cam. The coating may include tungsten carbide and cobalt, and the coating may be applied via high velocity oxygen fuel spraying. The method may further include the step of performing a surface finishing on the coating after the coating is applied.

Abstract: A cylinder liner for an internal combustion engine may include an outer circumferential surface defined by the cylinder liner composed of a gray cast iron for integrally casting onto a cast material of an engine block. A bonding component may be included for strengthening a bond of the outer circumferential surface to the cast material of the engine block. The bonding component may include at least one of a wire mesh and a wire grid that does not melt during a casting operation of the engine block. The bonding component may be arranged at least in a predefined region on the outer circumferential surface. The bonding component may be welded at least partially to the outer circumferential surface.

Abstract: A method for manufacturing a sliding tappet of a valve train of an internal combustion engine may include the steps of: providing a main body; applying a coating at least on a contact surface of the main body configured for contacting an associated cam. The coating may include tungsten carbide and cobalt, and the coating may be applied via high velocity oxygen fuel spraying. The method may further include the step of performing a surface finishing on the coating after the coating is applied.

Abstract: A cylinder liner for an internal combustion engine may include an outer circumferential surface defined by the cylinder liner composed of a gray cast iron for integrally casting onto a cast material of an engine block. A bonding component may be included for strengthening a bond of the outer circumferential surface to the cast material of the engine block. The bonding component may include at least one of a wire mesh and a wire grid that does not melt during a casting operation of the engine block. The bonding component may be arranged at least in a predefined region on the outer circumferential surface. The bonding component may be welded at least partially to the outer circumferential surface.

Abstract: A method for making an arrangement consisting of a cast part and a cast-in component composed of a metallic material. The cast-in component is composed of a metallic material that has a galvanically applied nickel layer. The layer is applied by positioning the cast-in component in an electrolyte bath and applying the coating on at least part of the surface of the component. The cast-in component is then positioned in a casting mold and a cast part is casted around the cast-in part.

Abstract: A method for the production of a piston for an internal combustion engine, composed of at least two components, each of which has at least one corresponding joining surface, has the following method steps: a) pre-working the at least two components, at least in the region of the joining surfaces; b) covering at least a part of the surface of at least one component with at least one covering medium; c) assembling the at least two components; d) connecting the at least two components along their corresponding joining surfaces, by means of beam welding, to produce a piston blank; e) removing the at least one covering medium and any excess weld material adhering to it; and f) machining the piston blank to produce a finished piston.

Abstract: The present invention relates to a coating composed of a metallic coating material, for a cast-in component composed of a metallic material. It is provided, according to the invention, that the coating consists of galvanically applied nickel. The present invention furthermore relates to a cast-in component composed of a metallic material that is coated on at least part of its surface with a coating composed of a metallic coating material, wherein a coating in the form of a galvanically applied nickel layer is provided.

Abstract: The invention relates to a method for coating the outer surface of a cylinder bushing. A small segment of the cylinder bushing is immersed into a melt which consists of a zinc based alloy comprising alloy components of aluminium and copper and which extends in a continuous manner over the entire axial length of the cylinder bushing, after cleaning and roughening the external surface, and the cylinder bushing is rotated about the longitudinal axis thereof, until a metal layer is formed on the outer surface of the cylinder bushing, which extends in a continuous manner over the entire length thereof and which consists of a zinc based alloy. The copper prevents an oxide skin, which is difficult to remove from the metal layer, from forming and also increases rigidity in the binding layer.

Abstract: The invention relates to a method for coating a cylinder sleeve consisting of an iron-based material. A first layer and a second layer made of a zinc alloy are injected onto the outer surface using a thermal injection method. A good metallic connection between the cylinder sleeve and the cylinder crankcase, wherein the cylinder sleeve is poured, is produced by using alloyed or unalloyed copper for the first layer and by using a zinc-aluminum-alloy for the second layer.

Abstract: A method for the production of pistons having depression edge armoring for internal combustion engines, in which a more heat-resistant armoring ring, in comparison with a forged piston blank having a combustion depression, is connected with the piston blank in the region of the depression edge. The method comprises the following steps: a first piston blank is set on a projection of the armoring ring in the region of the depression edge; the armoring ring is connected with the first piston blank by friction-welding; a second piston blank is set onto the projection of the armoring ring, in such a manner that the two piston blanks do not touch; the second piston blank is connected with the armoring ring by means of friction-welding; a the armoring ring is cut between the piston blanks, and the pistons are given their final shape by a cutting work method.

Abstract: A method for the production of pistons having depression edge armoring for internal combustion engines, in which a more heat-resistant armoring ring, in comparison with a forged piston blank having a combustion depression, is connected with the piston blank in the region of the depression edge.

Abstract: A method for the production of a forged piston for an internal combustion engine, having a combustion depression provided on the piston head. The piston is formed from a first cylindrical unmachined part having at least one flat face made of oxidation-resistant steel and a second cylindrical unmachined part having at least one flat face made of hot-forgeable steel, with the same diameters (d), in each instance. The two unmachined parts are formed to produce a piston blank by means of forging, causing the combustion depression to be formed from oxidation-resistant steel. Subsequently the piston blank is finished via machining to produce a piston ready for installation in the internal combustion engine.

Abstract: A method for the production of a forged piston for an internal combustion engine, having a combustion depression provided on the piston head. The piston is formed from a first tube-shaped unmachined part made of oxidation-resistant steel, having at least one join surface, and a second cylindrical unmachined part made of hot-forgeable steel, having at least one join surface. The join surface of the first unmachined part is shrunk onto the join surface of the second unmachined part. The two unmachined parts are formed to produce a piston blank, by means of forging, causing at least the combustion depression to be formed from oxidation-resistant steel. Subsequently the piston blank is finished via machining to produce a piston ready for installation in the internal combustion engine. Simplified and cost-effective production of a piston having a reduced tendency to oxidize at the edge of the depression, and improved protection against wear caused by erosion is achieved.

Abstract: A method for the production of a forged piston for an internal combustion engine, having a combustion depression provided on the piston head. The piston is formed from a first cylindrical unmachined part having at least one flat face made of oxidation-resistant steel and a second cylindrical unmachined part having at least one flat face made of hot-forgeable steel, with the same diameters. The two unmachined parts are formed to produce a piston blank, by means of forging, causing the combustion depression to be formed from oxidation-resistant steel. The piston blank is subsequently finished via machining to produce a piston ready for installation in the internal combustion engine.