Method and apparatus for the continuous quality control of a shape memory alloy wire

摘要

Being the method quality of controlling the form memory alloy wire or similar ones continually, the process which calculates the hiss tele cis curved line of the above-mentioned material where a) it supplies the wire inside the device, the temperature which covers the range which includes each transition temperature which is peculiar to the material of the said wire history process and b which inside the said device are made the said wire) at each specified place of the said device which corresponds to various known temperatures, in every place, temperature - extends the extension of the said wire directly or making use of process, c) temperature and the data of the extension which are measured indirectly with the inline, in the diagramThe method of including. It is desirable, supplies the wire with known speed, and fixed tension it does measurement of the above-mentioned extension, with the supposition of speed of the wire. Being the device which does the above-mentioned method, although the wire (F) you adjust tension and supply speed, the supply unit which is suited (B and B', V, V'), the wire (F) passes, without sliding the idle pulley (M) the consecutive constant temperature oven which it includes (T) the said pulley (M) it is coiled round, for example the said pulley (M) rotary speed it is possible to measure by the high resolution encoder.