New high-efficiency wear-resistant hammer crusher hammer (bottom)

The hammer crusher is mostly used to crush limestone . When it is used to break the dolomite, the hardness of the dolomite is high, which causes the hammer to wear quickly, which seriously affects the rate of the hammer crusher . The Red Star machine shared the research on the wear of the hammer crusher hammer and the hardness and characteristics of the dolomite. It was found that the hammer head can be broken to reduce the wear of the hammer by improving the hammer head.

According to the principle of bionics, star characteristics of the operating characteristics of the machine expert hammer crusher and dolomite, design and manufacture of a composite hammer, i.e. higher hardness alloy embedded in a larger matrix toughness. The composite hammerhead should have a high toughness and hardness in the outer softness.

The composite hammerhead is made of carbon steel, and the cemented carbide blocks are spaced apart in the base body. The cemented carbide block is made of 4Cr22MoCu and has a hardness of HRC52-58. According to the hammer structure and size, the alloy blocks are combined into a desired shape according to the position and number of the alloy blocks determined by the design. Then, it is heated to a certain temperature, and placed in a cavity, and then 45# molten steel is injected in a predetermined time to fuse the molten steel and the alloy hard block interface, thereby completing the manufacture of the composite hammer.

The composite hammer head is soft and hard, the handle of the hammer head is 45# carbon steel, which has good impact toughness. During the working process, the hammer head will not break, which provides a guarantee for safe production. The working part of the composite hammer has high hardness. Good wear resistance improves the service life of the hammer and reduces production costs. The hammer crusher of the new hammer crusher improved by the Red Star machine broke the dolomite. After a period of trial operation, the average service life of the composite hammer was 3.5 times higher than that of the alloy steel hammer.

It is feasible to manufacture composite hammer head by solid-liquid compound casting process. The special composite structure makes the hammer head not fall off and break during use. The composite hammer has both toughness and hardness, high overall wear resistance and long service life. The improvement of the service life of the composite hammer head reduces the downtime maintenance time, reduces the maintenance labor intensity, improves the production efficiency, and has significant economic benefits.

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