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    • 10. 发明申请
    • METHOD AND APPARATUS FOR THE CONTINUOUS QUALITY CONTROL OF A SHAPE MEMORY ALLOY WIRE
    • 形状记忆合金线连续质量控制的方法与装置
    • WO2005106441A1
    • 2005-11-10
    • PCT/IT2005/000244
    • 2005-04-28
    • SAES GETTERS S.p.A.SALVAGO, GiovanniTOIA, Luca
    • SALVAGO, GiovanniTOIA, Luca
    • G01N25/16
    • G01N25/16
    • A method for the continuous quality control of a wire of shape memory alloy comprises: a) supplying the wire through a plurality of controlled temperature areas suitable for reproducing a temperature profile encompassing the characteristic transition temperatures of the material the wire is made of; b) measuring the elongation of the wire at each area at controlled temperature; c) using the data of temperature and elongation to obtain by points the hysteresis curve of the material in the temperature-elongation diagram. Preferably the wire is supplied at a known velocity and with a constant tension, and the measurement of the elongation is obtained by measuring the velocity of the wire. An apparatus carrying out the method comprises supplying units (B, B', V, V') suitable for adjusting the tension and the supplying velocity of the wire (F) through a series of thermostatic chambers (T) containing idle pulleys (M) whereon the wire (F} is wound without sliding, whose rotational velocity can be measured for example by high-definition encoders.
    • 一种用于形状记忆合金线材的连续质量控制的方法包括:a)通过适于再现温度曲线的多个受控温度区域来供应导线,该温度曲线包括由导线制成的材料的特征转变温度; b)在受控温度下测量每个区域的导线的伸长率; c)使用温度和伸长率的数据,通过点获得材料在温度 - 伸长率图中的滞后曲线。 优选地,线以已知的速度和恒定的张力供应,并且通过测量线的速度来获得伸长的测量。 实施该方法的装置包括通过一系列含有空载滑轮(M)的恒温室(T)供应适合于调节线材(F)的张力和供应速度的单元(B,B',V,V'), 其中线(F)不滑动地卷绕,其旋转速度可以例如由高清晰度编码器测量。