A hollow axle shaft for transmitting rotational motion from a prime mover to a wheel of a vehicle comprises an elongated member. The elongated member extends along an axis between a first end and a second end. The hollow axle shaft further comprises a flange at the first end and extending radially away from the axis for receiving the wheel. The flange is integral with the elongated member. A method of manufacturing the hollow axle shaft comprises the step of providing the elongated member comprising a material and defining a bore extending along the axis between the first and second ends, and the step of forming the flange with the material at the first end.

A method of manufacturing a light rotor shaft for eco-friendly vehicles is provided which includes cutting a pipe material in a specified length to provide a pipe blank and forming the pipe blank to provide a first form having the first segment on a first side. The method further includes, forming a second form having the second segment by inserting and rotating a first side of a mandrel into the first side of the first form and concurrently hammer-forging the second side of the first form to form the second segment. The rotor shaft includes a third segment formed by inserting and rotating the second side of the mandrel into the first side of the second form to form the third segment.

The invention relates to a method for producing a push rod (2) for a motor vehicle steering system (1), wherein a guide section (11) of the push rod (2) is formed with a non-circular and/or polygonal contour (12) for sliding guidance in the longitudinal direction of a central longitudinal axis (13) of the push rod (2) and for securing against rotation about the central longitudinal axis (13) of the push rod (2), by producing the contour (12) of the guide section (11) by means of a single manufacturing step in a provided blank. In order to enable a greater variety of contours when producing the contour (12) of the guide section (11) by means of the single manufacturing step, the method is characterized in that the contour (12) of the guide section (11) is formed by means of a warm forming or a cold hammer rolling forming.

A hollow wind turbine main shaft and a profiling forging process and a use thereof are provided. The profiling forging process includes: step S1: smelting alloying elements according to a formula to obtain a melt, casting the melt to obtain an ingot, and hot-feeding the ingot; step S2: reheating the ingot hot-fed in the step S1, followed by primary drawing-out, primary upsetting, secondary drawing-out, and secondary upsetting to obtain a forged ingot; step S3: reheating the forged ingot, followed by punching to obtain a punched forging; step S4: reheating the punched forging, and performing drawing-out and rounding on a shaft body of the punched forging to obtain a finished forging; and step S5: placing the finished forging into a thermal insulation barrel for slow cooling, and air-cooling the finished forging to a room temperature to obtain the hollow wind turbine main shaft.