The silicon composition in Limestone chemical can impact the life of the hammer directly, the higher silicon content, the shorter the life of the hammer, the best situation is limestone silicon content of less than 2%. On the other hand the level of compressive strength in limestone is closely related to the life and hammer. The higher the compressive strength, fragility worse, the shorter the life of the hammer. Hammer selection and manufacturing quality of life has a very important effect: before the cement industry with the hammer crusher material, mostly high manganese steel, good one is ZGMn13Cr2, its hardness will be HRc23 after heat treatment. This limestone hammer in case of a high silicon content and high strength, if the job situation coupled with the adverse effects, life is very short. A pair of hammer 2022, may not yield more than 100,000 tons.
        As new technologies continue to emerge hammer, he has appeared in the ultra-high manganese steel hammer and double composite wear-resistant alloy hammer. The ultra-high manganese steel is ZGMn18Cr2MoRe, it improve the content of manganese than ZGMn13Cr2. It aims to improve the hammer heat treatment hardness, improved wear resistance and prolong life. However, the manganese content and improve the alloying elements within certain limits, because they increase the hardness, wear resistance will also decrease in toughness, so the impact is very large, not the best. Double composite wear-resistant alloy hammer, usually three forms: One is that the work surface surfacing layer of hard alloy hammer, hammer improve abrasion resistance; the other is to be controlled during casting, improve the working part of hammer alloy (mainly chromium) content: Third, in the hammer work site, inlaid carbide rods or alloy ingot manufacturing quality hammer is mainly affected by the geometry of the alloy composition, content and heat treatment. hardness depth and other factors. Secondly, crushing situation also has a great impact on the life hammer: limestone particle size has a great influence on the service life of the hammer; limestone water content has great influence on the life of the hammer;crusher discharge clogged grate slits times and time after plugging continue operations length, has a great influence on the service life of the hammer; limestone raw materials contain impurities. The impact of these factors on the hammer wear life is very important.