model lost used in foundry for the production of a workpiece and method of assembly of parts constituting such a model lost

摘要

The lost foam (1) comprises two assembled parts (2, 3), and a reference part (8). Each part comprises an outer surface (7) and a sealing face (5). The sealing face of one part is assembled to a corresponding sealing face of an adjacent part. The outer surface of the first type and sealing face of the second part comprises the reference part. The sealing faces of the two parts are assembled with an intermediate sealing joint. The reference part of the second type is provided in a blank zone of the sealing face and within a hollow housing. The lost foam (1) comprises two assembled parts (2, 3), and a reference part (8). Each part comprises an outer surface (7) and a sealing face (5). The sealing face of one part is assembled to a corresponding sealing face of an adjacent part. The outer surface of the first type and sealing face of the second part comprises the reference part. The sealing faces of the two parts are assembled with an intermediate sealing joint. The reference part of the second type is provided in a blank zone and within a hollow housing. The reference part of the first type is provided in a pattern on its outer side. An independent claim is included for a process for assembling two parts of a lost foam.