INSERT ELEMENT FOR A HOLLOW BODY AND METHOD FOR FITTING THE INSERT ELEMENT INTO THE HOLLOW BODY

摘要

The invention relates to an insert element comprising a carrier and an expandable material connected to the carrier, and a method for fitting said insert element into a conductive hollow body, said method comprising the following steps: the insert element is introduced into the hollow body; the insert element is positioned in the hollow body, the contact surface of the insert element coming into contact with the inner wall of the hollow body; a biasing current is injected between the insert element and the hollow body; the insert element and the hollow body are separated, forming an electric arc between the contact surface and the inner wall of the hollow body; a welding current is activated in order to form at least one melted mass on at least one side of the electric arc; the insert element and the hollow body are put together; and the insert element and the hollow body are connected by means of the melted mass located at least on one side.