煤炭工程 ›› 2026, Vol. 58 ›› Issue (3): 79-84.doi: 10.11799/ce202603010

• 设计技术 • 上一篇    下一篇

预应力复合衬板在大型筒仓耐磨层中的应用研究

尚 奇,罗 新,袁 泉   

  1. 1. 中煤西安设计工程有限责任公司,陕西 西安 710000

    2. 煤炭无人化开采数智技术全国重点实验室,北京 100120

  • 收稿日期:2025-02-28 修回日期:2025-08-27 出版日期:2026-03-10 发布日期:2026-04-14
  • 通讯作者: 尚奇 E-mail:shangqi9875@163.com

Application of prestressed composite liner plates in wear-resistant linings of large silos

  • Received:2025-02-28 Revised:2025-08-27 Online:2026-03-10 Published:2026-04-14

摘要:

为解决大型筒仓耐磨层在高能冲击下的失效问题,提出一种预应力金属微晶陶瓷复合衬板创新方案。该衬板基于消失模铸造工艺,通过精确控制冷却过程,利用材料热膨胀系数差异在陶瓷相中产生10~20MPa预压应力,显著提升了材料抗冲击及耐磨性能。创新设计了分料梁顶部“凹槽-拱面”复合结构,通过滞留细颗粒物料形成自缓冲层,优化了冲击力传递路径。工程应用表明,该衬板在高强度冲击、腐蚀和高湿环境等复杂工况下表现优异,有效解决了冲击破碎、腐蚀脱落及连接件剪切等技术难题,为筒仓耐磨防护提供了有效的解决方案。

关键词:

筒仓防护, 预应力金属微晶陶瓷, 抗冲击耐磨衬板, 分料梁, 凹槽结构

Abstract:

To address the failure of wear-resistant linings in large silos under high-energy impact, this paper proposes an innovative prestressed metal-microcrystalline ceramic composite liner. Utilizing the lost-foam casting process, a compressive prestress of 10–20 MPa is generated within the ceramic phase through precisely controlled cooling and differential thermal expansion between materials, significantly enhancing impact resistance and wear performance. An innovative "groove-arch" composite structure was designed for the top of the distribution beam, which retains fine particles to form a self-buffering layer and optimizes impact force transmission. Engineering applications demonstrate excellent performance of the liner under complex conditions including high-intensity impact, corrosion, and high-humidity environments, effectively resolving technical issues such as impact-induced fragmentation, corrosion spalling, and connector shear failure, providing an effective solution for silo wear protection.

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