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Performance and selection of high speed steel circular blade and carbide circular blade
- Aug 02, 2018 -

The performance of the blade depends on the quality of the steel, the geometric parameters and the design of the blade structure. In the manufacturing process, the productivity and durability of the slitting blade, the edge wear and processing cost, as well as the machining accuracy and surface quality. To a large extent, it depends on the reasonable choice of blade steel. The correct choice of blade material is one of the important aspects of the design and manufacture of the "finishing blade".


The service life of the circular blade is the main condition for the selection of the blade steel. The matching of the performance of the blade and the material to be processed is an important basis for the selection of the steel. According to the steel selected from the blade steel and the mechanical and physical properties of the material to be processed, a good service life can be obtained. In the production process of slitting circular blades, the development of steel plays a decisive role in the advancement of shearing technology.


Material comparison of circular blade


High-speed steel - high-speed steel refers to high-alloy tool steel with more alloying elements such as tungsten, molybdenum, chromium and vanadium. It has high strength and toughness and has certain hardness and wear resistance. Suitable for all kinds of mechanical blades, the manufacturing process is simple, and it is easy to be processed into a sharp cutting edge. Therefore, while new tool materials continue to emerge, high-speed steel round inserts still account for a large proportion in slitting.


Tungsten carbide--a high-hardness material made of metal carbides such as WC, TiC, TaC, NbC and metal binders such as Co and Ni, which are made by powder metallurgy; metal carbides contained in cemented carbides The material has high melting point, high hardness, good chemical stability and good thermal stability. Therefore, the hardness, wear resistance and heat resistance of the hard alloy material are quite high.


The hardness of commonly used tungsten carbide is much higher than that of high-speed steel. At 800-1000 °C, the carbide circular blade can also be processed. Therefore, the cutting performance of tungsten carbide is higher than that of high-speed steel, and the durability of the blade can be It can be increased by several times to several tens of times. When the durability is the same, the cutting speed can be increased by 4 to 10 times, and the advantages are quite obvious.


Each type of mechanical blade has its specific processing range and can only be applied to specific production and processing speeds; the quality of steel is the basic factor affecting the quality, processing efficiency and service life of manufacturing blades. In the processing, the blade part of the circular blade is directly responsible for the work, so the hardness of the blade of the circular blade is very important.