Method and device for testing the parameters of the wire from NiTi alloy in the high-temperature manufacturing process with use an inert gas

摘要

NiTi alloy is a shape memory alloy that can be applied in various fields of science and technology. The use of NiTi alloy wires in the design of the engine reduces energy consumption to drive the engine mechanisms and improve economic efficiency in general. In this paper, we propose a method and improved design of an optical device to check the diameter and temperature of the surface of the NiTi wire at high temperature during its manufacture in an inert atmosphere. Brief information about high-temperature manufacturing processes of extended cylindrical products is given. The monitoring algorithm for both parameters of the wire was proposed and the main errors was deduced. The required temperature range for the NiTi alloy at a wire die-less drawing is determined.