METHOD TO OBTAIN VIBRATIONS IN THE WALLS OF THE CRYSTALLIZER OF AN INGOT MOULD BY MEANS OF ACTUATORS AND THE RELATIVE DEVICE

摘要

Method to obtain vibrations in the walls of the crystalliser (11) in an ingot mould (10) by means of actuators, the ingot mould (10) including channel means (13) for the circulation of cooling liquid, the ingot mould (10) being associated with a conventional system of oscillation, there being induced on the crystalliser (13) vibrations of small amplitude and high frequency and acceleration obtained by means of exciting an actuator (16) comprising an element in magnetostrictive alloy (18) arranged in cooperation with at least one face of the crystalliser (11) itself, the element in magnetostrictive alloy (18) being associated with means (19) to generate an electromagnetic field. Device to obtain vibrations in the walls of the crystalliser (11) of an ingot mould (10) by means of actuators, the ingot mould (10) including at least a channel (13) for the circulation of cooling liquid defined between an intermediate wall (12) and the outer face of the crystalliser (11), the ingot mould (10) being associated with a conventional system of vertical oscillation, in cooperation with at least one wall of the crystalliser (11), there being included at least one actuator (16) comprising an element (18) made of magnetostrictive alloy associated with means (19) to generate a magnetic field.