A method for forming and for the treatment of an open coil with gas as well as open metal strip coil

摘要

Process and means are disclosed for forming an open coil of strip metal, such as steel strip, in which the convolutions of the coil are spaced apart to permit passage of treating gases through the spaces for treating the material of the strip. A spacer band or web is interwound with the strip as it is wound into a coil to achieve the desired spacing of the convolutions, the spacer being substantially the same width as the strip and having elongated members extending transversely of the strip which are stiff enough to restrict undesirable bending of the strip across its width. The spacer also includes elongated members that extend generally longitudinally of the strip and that are flexible enough to form the coil. The spacer band acts as a structural member that supports the metal strip during forming and handling of the open coil and during treating of the strip, and thus promotes the successful formation, handling, and treatment of open coils of very thin metal, for example steel strip as thin as 0.003 inch in thickness.