Use of copper@-titanium@ alloy - to mfr. wires or profiles for parts of spectacles

摘要

Use of a Cu-Ti-X alloy to mfr. wires or profiles for parts of spectacles is claimed. The alloy comprises 2.0-3.5% Ti, X= 0.1-1.0% Fe, or 0.05-0.5% Zr, or 0.5-1.5% Mg, a balance of Cu and usual impurities. The vacuum-cast and extruded alloy has a hardness of at least 200 HV10 after cold forming; homogenising annealing between 850-1000 deg C for 10 mins.-10hrs. rapid cooling at 20 deg C/S-150 deg C/s, and cold forming between 50 and 90% degree of forming. Amt. of Fe present is 0.3-0.6%, Zr is 0.1-0.5% and Mg is 0.8-1.2%. Subsequent cold forming of at least 20% is carried out. ADVANTAGE - The alloy has suitable, mechanical strength.