METHOD OF REPAIR OF THIN-WALL HOUSINGS

摘要

The present invention provides methods and materials for use in repairing a worn component having thin walls. One kind of thin wall (34) may be the wall (34) of a cylindrical portion of the component where such wall (34) has a worn inner surface (32) and an opposite outer surface (33). The method includes the steps of preparing (110) the outer surface of the component for cold spraying; cold spraying (120) material onto the outer surface so as to form a strengthening coating; reaming (140) the inner surface so as to create a repair surface with a repair diameter greater than the inner diameter; and installing (150) an insert on the repair surface. The thickness of the coating is selected so as to impart a desired degree of strength to the wall (34). The method allows the repair of expensive aluminum castings that would otherwise, because of the thin wall construction, not be suitable for repair.