English
Toughness of high speed tool steel,bending easily damaged,broken replace expensive saw blade,increasing production costs.Repair broken damaged saw blade has a higher value.High speed tool steel with high carbon content,containing tungsten,chromium,molybdenum and vanadium and other alloying elements,its poor weldability,after easily quenched,quenching of the resulting in a brittle,causing crack on weld seam and heat-affected zone.
