A method for machining a workpiece for a high-pressure fuel reservoir and the workpiece for the application of the process

摘要

A method for processing a, a hardening, ferritic - pearlitic steel, tubular, which workpiece– for a high-pressure fuel reservoir (rail) of a common - rail - fuel injection system (system) is determined by internal combustion engines,– an axial inner space (1) and from the periphery of the rail running transverse bores (2) with intersections (3) to the inner space (1) and– at the axial connecting points and peripheral connecting points (2.3) of the rail is equipped with connection means to the system, in order to reduce the dynamic load and to increase the fatigue strength of the rail, characterized bya) deformation of the workpiece around a mandrel at temperatures of up to about 300°C. for the consolidation of the material and for shaping of the inner space (1), wherein– the strength of the material in a function of the temperature and the degree of deformation is purposefully adjusted,– the cross section of the inner space (1) to a contour with a variable continuous curvature (1.1) is formed and– in the contour (1.1) at least one region with..