Hammer plate! What is the feature of the wear-resistant hammer when Cement Crush limestone?
The content level of Silicon in the Limestone is a direct reason for the life of the hammer plate, the higher the silicon content, the shorter the life, the suitable content is less than 2% in the limestone. On the other hand, the level of compressive strength of limestone is also closely related to life. The higher the compressive strength, fragility worse, the shorter the life of the hammer. In the past years, the cement industry who have hammer crushers always choose the high manganese steel casting, Called ZGMn13Cr2, its hardness can reach HRC 23 after heat treatment. However, Most limestones have a high silicon content, so the hammer working life is very short, such as the type 2022 hammer plate, which maybe can not crush 10,0000 tons of material.
As new technologies improve, Now we choose the ultra-high manganese steel hammer or double composite wear-resistant alloy to casting hammer plate. The so-called ultra-high manganese steel, ZGMn18Cr2MoRe, compare with ZGMn13Cr2 improves the content of manganese which aims to improve the hammering heat treatment hardness, improved wear resistance, and working life. However, the manganese content and the alloying elements within certain limits, because when increasing the hardness, wear resistance will also decrease its toughness.
Double composite wear-resistant alloy hammer, which is the best choice.
- the work surface surfacing layer of hard alloy to improve abrasion resistance;
- improve the working part of hammer alloy (main chromium) content when casting:
- in the hammer work site, inlaid carbide rods or alloy ingot.
The quality of the hammer is mainly affected by the geometry of the alloy composition, content, and heat treatment. hardness depth and other factors. Surely, the crushing situation, limestone particle size; limestone water content; crusher discharge clogged grate slits times and time after plugging continue operations length, and so on.
Qiming Casting has enough experience to manufacture the perfect products which you want, if you have an inquiry, contact us freely.