Preparation Methods and Performance of Brazed Diamond Wire Saws

Spring steel 65Mn wire with the diameter of 0.2 mm was selected as the wire saw matrix.The brazed diamond wire saws were prepared by brazing process in a vacuum furnace using nickel-based alloy powder solder and in a tube furnace using Ag-Cu-Ti alloy powder solder.Their surface morphology,matrix microstructure, mechanical properties and fatigue properties were investigated comparatively.The results indicate that the diamond wire saw prepared using Ag-Cu-Ti alloy powder as solder had better properties,whose tensile strength was 1 132 MPa,elongation was 3.27%, fatigue life was 12 h,and matrix microstructure was tempering sorbite.