Patent ID: 8701967

Claim:
A method for manufacturing a cooling element for a metallurgical furnace, wherein said method comprises the steps of: providing a base element that is substantially made of copper, includes a cooling water channel system in said base element, and includes a surface, and forming a metal coating on said surface of said base element by explosion welding, wherein the cooling water channel system is machined at least partly by drilling holes from outside the base element, so that there are holes on the surface of the base element, at least some of the holes are plugged at least partly by a plug, which is fitted in a hole on the level of the outer surface of the base element, so that the holes drilled in the base element form at least part of the cooling water channel system, and the base element is coated with the metal coating at the plugs by explosion welding, so that the metal coating at least partly covers the plugs fitted in the holes.