Method and device for the treatment, with an annealing under tension, of an alloy ferromagnetic amorphous, and the corresponding product.

摘要

The device proposed for the treatment of a material of the amorphous ferromagnetic alloy type is based on a rotating tool of chosen general shape (3), over which a thin ribbon of the material to be treated is passed by driving means (1 to 8) while being subjected to a controlled traction of servo-controlled chosen intensity (2, 7). Means of heating are defined by two electrically and thermally conductive bodies (41, 42; 43, 44) forming a heat well, coming into contact with the said material as it passes upstream and downstream over the tool, and which are used in combination with means for supplying electricity (52) to these bodies to produce a servo-controlled self-heating of the conductive ribbon by the Joule effect. Means of cooling (6) act on these two bodies themselves. IMAGE