Method and apparatus for preheating, tent- covering of in the centrifuge - composite casting, prevent the casting mold bodies ends bearings

摘要

In the process, before pouring the bearing molten metal into the bearing body (1) rotating about the axis of the bearing bore, said rotating bearing body (1), preheated from the outside, is heated up from the inside, in an inductive manner, to the composite casting temperature. In this manner, the heat content of the bearing body (1) itself can be kept low, with the result that the sliding metal which has been poured in solidifies rapidly and the desired finely crystalline structure is obtained and segregation is largely avoided. The apparatus for carrying out the process has a heating device which comprises an induction internal heating device (6) which can be pushed into the bearing body (1). IMAGE