COPPER STRAND WIRE FOR HORIZONTAL WINDING OF PIANO STRING

摘要

PURPOSE:To improve tones of piano strings by forming copper strand wires for the horizontal winding of the piano strings with a wiry body solidified from a melt in the form of a single crystal. CONSTITUTION:Copper strand wires for horizontal winding of piano strings are formed with a wiry body solidified from a melt in the form of a single crystal. The pref. specific gravity of the wiry body is >=8.93. When the wiry body is worked, it is heated treated at 100-500 deg.C for <=10hr after working.