Back material of bi-metal band saw blade and band saw blade made of back material

Abstract

The invention discloses a back material of a bi-metal band saw blade, which comprises the following alloy ingredients: 0.32 percent of C, 0.25 percent of Si, 0.85 percent of Mn, 0.002 percent of Nb, 0.001 percent of B, 1.12 percent of Mo, 1.2 percent of Cr, 0.31 percent of V, 0.015 percent of Al, 0.012 percent of N, 0.66 percent of Ni, 0.003 percent of S, 0.011 percent of P, 0.24 percent of RE, and the balance of Fe. The band saw blade is made of the back material, sawteeth without teeth tops are arranged at the back of the saw blade, saw blade teeth tips are welded at the tops of the sawteeth, the rake angle gamma of the sawteeth of the saw blade teeth tops is equal to 10 degrees, the relief angle alpha of the sawteeth is equal to 30 degrees, the deviation angle phi of the sawteeth is equal to 10 degrees, and the deviation amount lambda of the sawteeth is equal to 0.6 mm. The back material and the band saw blade have the advantages that the mechanical property of back material steel improved, the cutting efficiency of the saw blade is high, the consumption of the saw blade is low, and the service life of a saw band is prolonged effectively.

Description

technical field [0001] The invention relates to a band saw blade for cutting metal materials, in particular to the back material of a bimetallic band saw blade. The invention also relates to a band saw blade made of the back material. Background technique [0002] Bimetal band saw blade mainly refers to the metal cutting band saw blade whose tooth tip material is high-speed steel or other high-performance steel, and the back material (saw band material) is alloy spring steel. It is made of high-speed steel and alloy spring steel by vacuum electron beam welding. Finally, it is manufactured through a series of cold and hot processing processes. Bi-metallic band saw blades are versatile and can be used with any type of band sawing machine, suitable for continuous sawing of almost all types of metals, such as: structural steel, weathering steel, alloy steel, bearing steel, stainless steel, heat-resistant steel, aluminum alloy , Die steel, etc. [0003] Compared with tradition...

AI Technical Summary

Problems solved by technology

When the rake angle is too large, although the "ploughing" effect of the cutter on the steel makes the friction between the contact points smaller, and the cutting force of the cutter on the steel is reduced, but at the blade, due to the relatively concentrated force, there will still be more Large equivalent stress, which affects the strength of the tool

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