Method for manufacturing cutting blade and cutting blade manufactured by the method

Abstract

The invention provides a manufacturing method of a cutting blade and a cutting blade manufactured by the same, wherein the edge part of the cutting blade has long service life and low replacing frequency; and the manufacturing cost can be reduced. The cutting blade is provided with a blade front end part protruding outwards from a fixed part; the blade front end part has a front end edge part protruding towards a rotation direction; the cutting blade with the blade front end part has a side edge part along a side shape end of the cutting blade; and the manufacturing method comprises a process of performing the prescribed chamfering of the thickness direction of the front end edge part and the shape end of the side edge part, a process of performing build-up welding with the hardening build-up welding material in the thickness direction of the cutting blade of the front end edge part, a process of realizing build-up welding with the hardening build-up welding material for the side edge part along the side shape of the cutting blade towards the front end edge part of the blade front end part, and a process of performing finish machining of the build-up welding part with a mechanical processing method to form two edge parts.

Description

technical field [0001] The present invention relates to a method of manufacturing cutting blades for shearing crushers and the like used for crushing various objects to be crushed by shearing action, and the cutting blades manufactured by the method. Background technique [0002] Conventionally, there are known shear crushers that shear and crush solid objects to be crushed, such as plastics, wood chips, paper, metal, rubber, fibers, and leather. For example, as such a shearing crusher, there is a shearing crusher that the present applicant has previously applied for (see Patent Document 1). [0003] Such as Figure 7 A top view showing the shear crusher and Figure 8 of Figure 7 As shown in the VIII-VIII sectional view, in this shearing crusher 100 , in the axial direction of the rotating shafts 101 , 102 , pads 104 are arranged alternately between a plurality of rotating blades 103 . The spacer 104 positions and fixes the rotating blade 103 in the axial direction, and i...

AI Technical Summary

Problems solved by technology

[0008] However, in order to improve the wear resistance, such cutting blades 105 are made of expensive materials such as alloy tool steel as a whole. Therefore, in the case of a shearing crusher using multiple cutting blades 105 on one crusher, the replacement of the cutting blades the cost is high

And it takes a lot of time to replace the cutting blade 105, so the operating rate of the crusher is low, the production efficiency drops, and the labor force required is also many

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