INDUCTION WELDING PROCESS AND DEVICE FOR PARTS MADE OF COMPOSITE MATERIALS

摘要

A device comprising at least one pressure generation unit and a heating unit, the heating unit comprising a two-sided inductor and being configured to generate a uniform alternating magnetic field in an assembly comprising two parts made of composite materials comprising carbon fibers embedded in a resin and a field absorber. The field absorber is configured to absorb the magnetic field and comprising a ferromagnetic material. The field absorber is arranged at the contact walls of the two parts, so as to heat them to at least a transformation temperature of the resin.

主权项

1. An induction welding process for at least two parts made of composite materials comprising carbon fibers embedded in a resin and oriented in a main direction belonging to a principal plane, said process comprising the following steps:
forming at least one field absorber configured to absorb a magnetic field and comprising a ferromagnetic material; forming an assembly comprising the parts to be welded and the at least one field absorber arranged at contact walls of the parts; generating, over a predefined period, a uniform alternating magnetic field in the assembly with the help of a two-sided inductor, in a direction of incidence, so as to heat the contact walls of the assembly up to a temperature referred to as the process temperature; and tilting at least one of the following elements: the assembly and the two-sided inductor, so as to orient the direction of incidence of the magnetic field in relation to the principal plane at an angle other than 90° and other than zero.