The impact of jaw plate material selection on crusher performance
Release time:
2025-05-27 08:08
In Jaw Plate Material Selection In terms of jaw plate material selection, the key to wear resistance depends on the balance between hardness and toughness of the material. ① When the material hardness is too high, the material extrusion depth becomes shallower, the deformation amount decreases, and the short-range sliding and cutting effect between materials weakens; ② Materials with excellent toughness can significantly improve the anti-fracture performance, effectively avoiding brittle fracture problems during extrusion and impact, and enhancing the ability to resist fatigue deformation and cracking. Duma Machinery, a Chinese expert in jaw crusher spare parts, points out that these two performance indicators often have a contradictory relationship, and how to achieve an excellent ratio has become a technical difficulty in the industry.
For different specifications of crusher jaw plate castings the appropriate material needs to be selected according to the actual working conditions. Due to differences in size and specifications, jaw crushers face challenges with different feed particle sizes and sharpness (various shapes), resulting in significant differences in the extrusion and impact forces on the tooth plates. For large and medium-sized equipment, in addition to resisting material extrusion and sliding cutting, the impact force and bending stress must also be considered. Therefore, large equipment generally uses Mn13Cr2 modified high manganese steel as the jaw plate material.
In the research and development of jaw plate materials, the ideal material should have both high hardness (resisting extrusion and micro-chipping damage) and sufficient toughness (preventing chipping and impact fatigue). At the same time, by optimizing the jaw plate structural design, relative sliding can be effectively reduced, which not only improves equipment productivity but also significantly extends the service life of Chinese jaw crusher spare parts.
Currently, small crusher jaw plate castings mainly use high manganese steel, with low alloy cast iron used less frequently. The latter is prone to fracture problems due to insufficient toughness. However, practice has shown that due to insufficient impact force, small equipment cannot fully stimulate the quenching characteristics of high manganese steel, resulting in its excellent wear resistance not being apparent, and the jaw plate service life is usually only 200-400 hours, resulting in a large waste of high manganese steel resources. Therefore, developing new jaw plate materials to extend service life and reduce material consumption has become an important research direction in the current crusher jaw plate castings field.
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The main products of Duma Machinery include: rolling mortar wall, crushing wall and material dividing plate of cone crusher; jaw plate, side guard plate and pressing strip of jaw crusher; lining plate of ball mill, autogenous mill and other equipment; plate hammer and impact plate of impact crusher; hammer head, screen strip, lining block and other wear-resistant alloy steel parts of metal crusher.
Contact Information
Jiangxi Duma Machinery Manufacturing Co., Ltd.
Address: No.15, Jinhui Road, High-tech Zone, Yushan County, Jiangxi Province
Mobile:13957606188
Telephone:0793-2238555
Mailbox:ceo@dumajx.cn
Chinese website:Duma. Website Wear parts. Website
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