Method for producing a cast component with a cast-in pipe

摘要

A method produces a cast component of an internal combustion engine with a cast-in pipe. Expendable molds and a permanent pattern, or permanent molds are used in the method. A solid core mold is mounted in a split outer mold. To solve the problem of the pipe changing its position during the casting of the component, a separate pipe holder is integrated into the outer mold or the core mold. The pipe is inserted into a retaining section of the pipe holder that is configured in such a manner that it locally surrounds the outer circumference of the pipe at least in part and with little play so that the pipe can expand in the axial direction during casting but is secured against displacements in radial directions caused by buoyancy forces of the liquid casting material. Subsequently the component is cast.