Technical Upgrade of High Manganese Chromium Steel Wear-Resistant Parts Achieves Another Breakthrough in Mining Crushing Efficiency

Recently, the wear-resistant components of ore crushers made of high-manganese chromium alloy steel have garnered widespread attention in the mining industry due to their significant performance enhancements. This novel material, which incorporates elements such as manganese, chromium, molybdenum, and rare earths, is gradually replacing traditional high-manganese steel components and has become the preferred solution for high-wear conditions

Technological breakthrough: Component optimization achieves performance leap

The newly developed ZGhMn18Cr2MoRe high manganese chromium alloy steel components have undergone compositional improvement through the utilization of abundant mineral resources in China. By adopting grain refinement and grain boundary purification techniques, the hardenability and comprehensive mechanical properties of the material have been significantly enhanced. Through actual testing, it has been found that its wear resistance is 1.5 to 2 times that of ordinary high manganese steel. In hard rock crushing scenarios such as limestone mines, a single set of components can support the production of over 1 million tons of rock slag, resulting in a significant increase in equipment operation rate

The core advantage of this material lies in its unique work-hardening characteristics: after water toughening treatment, the single-phase austenite structure formed exhibits a surface hardness increase from HB170-230 to 500~800HB under impact loading. The depth of the hardened layer reaches 10~20mm, and new hardened layers continue to form as the surface wears, achieving a cyclic strengthening effect of "the more impact, the more wear-resistant". Even in the face of chiseling wear from high-strength ores such as quartzite and basalt, it maintains excellent toughness, with impact toughness reaching up to 294J/cm²

Application implementation: significant cost reduction and efficiency improvement

In practical applications in mines across various regions, high-manganese chromium steel components have demonstrated remarkable economic value. After a large limestone mine adopted this material for hammer heads, the equipment downtime for component replacement was extended from once a week to over one and a half months, and the annual maintenance cost for a single production line was reduced by over 40%. For key equipment such as cone crushers and hammer crushers, customized components such as liners and crushing walls have further extended their service life by thickening the material in high wear areas, resulting in a 12% to 15% increase in overall equipment productivity

Addressing the previous pain points of "difficulty in processing and welding" associated with high-manganese chromium steel, the industry has achieved breakthroughs through process innovation. The accessories now support secondary processes such as cutting and drilling, accommodating the installation needs of various crusher models, and enhancing installation efficiency by over 30%

Market Trend: Continuous expansion of demand for high-performance materials

The robust growth of the global high-manganese cast steel market has provided ample opportunities for this type of components. Data indicates that the global market reached a new high in 2024, with the mining industry consuming nearly one-third of the high-manganese cast steel produced. It is expected to maintain steady growth from 2025 to 2030. As a core market, the Asia-Pacific region is driving the research and development of cutting-edge technologies such as microalloying and nanomodification, and the new generation of materials is expected to achieve a better balance between wear resistance and processability

Industry experts point out that as mineral resource development extends deeper, the demand for processing high-hardness ores has surged. High-manganese chromium steel components, which possess both high toughness and wear resistance, will become the core direction for upgrading crushing equipment. Their technological iteration will continue to drive cost reduction and efficiency improvement in the mining industry