Abstract: There are provided herein a superconductive composite tape and a method of fabrication thereof: a tape having a layer made of superconductive material positioned on a substrate is etched, for example by using laser equipment, in order to obtain a plurality of grooves through the superconductive material layer and delimit a plurality of superconductive filaments, which are substantially parallel to one another and to a longitudinal axis of the tape and are spaced out from one another.

Abstract: The process serves for the preparation of tubular copper or copper alloy chills or ingot moulds for use in continuous steel casting system, including a first stage comprising the formation of an inclined shoulder on one end of a tubular blank having a rectilinear axis, by cold plastic deformation; a second stage comprising shaping the said blank in such a way as to impart to it a curved form; a third stage comprising subsequently introducing into the interior of the blank a mandrel having external shape and dimensions equal to those of the chill which it is desired to obtained; a fourth stage comprising passing the blank through a die of a drawplate having dimensions such as to deform the material of the blank to cause the internal surface of the blank to adhere strictly to the external surface of the mandrel; a fifth stage performed when the blank has traversed the die, comprising exerting a substantially axial force on the mandrel in the opposite direction from that exerted in the preceding stage, whilst on

Abstract: The process serves for the preparation of tubular copper or copper alloy chills or ingot moulds for use in continuous steel casting system, including a first stage comprising the formation of an inclined shoulder on one end of a tubular blank having a rectilinear axis, by cold plastic deformation; a second stage comprising shaping the said blank in such a way as to impart to it a curved form; a third stage comprising subsequently introducing into the interior of the blank a mandrel having external shape and dimensions equal to those of the chill which it is desired to obtained; a fourth stage comprising passing the blank through a die of a drawplate having dimensions such as to deform the material of the blank to cause the internal surface of the blank to adhere strictly to the external surface of the mandrel; a fifth stage performed when the blank has traversed the die, comprising exerting a substantially axial force on the mandrel in the opposite direction from that exerted in the preceding stage, while one

Abstract: A process comprising at least a first stage wherein a copper alloy ingot is placed against the end wall of a cavity in a mold, and at least a second stage wherein a pressure member, designed to move along the longitudinal axis of the cavity, exerts sufficient pressure on the ingot to permanently deform and spread the material of the same inside the cavity in the opposite direction to the aforementioned pressure member, so as to form an intermediate semifinished part having a side wall and an end wall which is subsequently cut off.