A viscose short fiber cutting knife manufactured by powder metallurgy method of mixing pure powder

Abstract

The invention relates to manufacture of a viscose staple fiber chemical fiber cutter. The manufacture comprises the following steps that at least nine kinds of pure powder such as Co, Cr, Cr3C2, W, WC, Ni, Mo, Cu and NbC is mixed, then the powder mixture is pressed into a knife-shaped pressed blank, sintering is conducted in a vacuumfurnace in 1200-1300 DEG C, and sintered blank is machined to the size required by a drawing. The chemical fiber cutter has the advantages that the chemicalfiber cutter produced by using a powder metallurgical method is more uniform in texture, texture defects of a casting part does not exist, new components such as columbiumcarbide and copper are added in a traditional formula, the service life is longer, and by adjusting the carbide content, the cutter hardness being needed by users can be manufactured.

Description

technical field [0001] The invention belongs to the technical field of manufacturing non-ferrous metal alloys, especially the manufacturing of cobalt-based powder metallurgy chemical fiber cutting knives, and particularly relates to manufacturing by powder metallurgy, which has the characteristics of uniform structure and no defects, and the addition of niobium carbide to its traditional components increases the composition. The wear resistance of the knife, adding copper to increase the corrosion resistance of the material, so that it has a longer service life is a viscose staple fiber cutting knife made by powder metallurgy mixed with pure powder. Background technique [0002] The chemical fiber cutting knife is a key part of chemical fiber production, and it is also a wearing part used in large quantities in the chemical fiber industry. In the prior art, there are two production methods of viscose staple fiber chemical fiber cutting knives: one is the cobalt-based chemica...

AI Technical Summary

Problems solved by technology

In the prior art, there are two production methods of viscose staple fiber chemical fiber cutting knives: one is the cobalt-based chemical fiber cutting knives produced by the casting process, and inclusions, pores, and shrinkage porosity will inevitably appear in the structure of the chemical fiber cutting knives manufactured by the casting process. , component segregation and other casting structure defects, especially for thin-walled parts such as chemical fiber cutting knives, are more likely to appear, which will lead to wire scraping and edge jumping during use.

Due to the coarse grains of the casting structure, the wear resistance of the tool is not good enough, and the service life is not ideal

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