(1) Alloy: Spring 葆 KE13, hardness ≥ HRA86.5

(2) Knife body: high-quality alloy structural steel forging processing, hardness HRC40±2

(3) Imported wear-resistant welding wire, hardness after surfacing HRC56-60

(4) Alloy brazing: silver-based brazing, welding strength ≥ 280MPa