Method and apparatus for measuring the mechanical properties of a long mechanical product, production method of this product and the product itself

摘要

let's get the product (2) through at least one electromagnetic coil (14) powered variable, is measured continuously, and the impedance of the electromagnetic coil is used to determine the mechanical characteristic of product or its variations by comparing the impu00e9da this is measured with at least one predetermined impedance value.the process can be used, in particular, to control a process for the production of a thread is the hypertrempu00e9 austenitic steel with martensite (. alpha.) by drawing the yarn in successive courses (3).we can measure the impedance of the coil (14) in which the wire (2) at the outlet of at least one channel (3), so that at least one of the parameters, the temperature of the die and wire (2), and the speed of the wire.