Machine and method for obtaining a bi-material part, method for manufacturing the machine

A machine for obtaining a bi-material part, comprising:

• a mold delimiting an over-molding housing configured to receive a hollow part of the bi-material part;
• a cooler arranged along the over-molding housing (20);
• at least one core, at least one part of which is positionable within the hollow part when the hollow part is received within the over-molding housing, wherein the at least one core comprises a heater for heating the machine, wherein the heater brings the at least one core to a heating temperature greater than 150° C.;
• and
• an injector configured to inject an over-molding material into the over-moulding housing via said mold when the over-molding material is in an injectable state, such that the over-molding material enters the over-molding housing to be shaped radially inward by said at least one core and radially outward by the hollow part, so as to form an inner part of the bi-material part over-molded over the inside of the hollow part, wherein said cooler keeps the over-molding housing at a cooling temperature of less than 110° C., while said at least one core is brought to the heating temperature by said heater in order to transition the over-molding material from the injectable state to a crosslinked state when the over-molding material has been injected into the over-molding housing by the injector.