Wear Mechanism Analysis of a New Rotary Shear Biomass Comminution System
Wear Mechanism Analysis of a New Rotary Shear Biomass Comminution System
复制标题
新型旋剪生物质粉碎系统磨损机理分析
DOI：
10.1021/acssuschemeng.1c02542
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发表时间：
2021
影响因子：
8.4
通讯作者：
Jun Qu
中科院分区：
文献类型：
--
作者：
Kyungju Lee;D. Lanning;Lianshan Lin;E. Cakmak;J. Keiser;Jun Qu
为了加工燃料级生物质，开发了一种新型生物质粉碎系统--粉碎机。旋转剪切机在粉碎高水分生物质和生产具有最小细粉的更均匀颗粒方面比传统锤式粉碎机更有效。然而，研磨单元在处理脏木片时经历显著磨损。本文通过对木片中所含矿物的分析和对实际磨损部件的表征，探讨了旋转剪切系统的磨损机理。磨粒磨损被认为是主要的影响，和局部粘着磨损（材料转移），微破裂（碎裂），和塑性变形的额外影响。已取得的关键切削部件的磨损进展和生物质外源性矿物的粒度变化之间的连接。基于对磨损机理的理解，正在开发基于先进刀具材料和优化刀具几何设计的缓解措施，以提高刀具寿命和切削效率。
A new biomass comminution system, Crumbler rotary shear, was developed to process fuel-grade biomass. The rotary shear is more efficient than the traditional hammer mill in comminuting high-moisture biomass and producing more uniform particles with minimal fines. However, the milling unit experiences significant wear in processing dirty woodchips. This study investigated the wear mechanisms of the rotary shear system based on analysis of the minerals carried by woodchips and characterization of actual worn components. Abrasive wear was found to be the dominant effect, and localized adhesive wear (material transfer), microfracture (chipping), and plastic deformation were additional effects. Connections have been made between the wear progression of key cutting components and the particle size change of biomass extrinsic minerals. On the basis of the wear mechanism understanding, mitigations based on advanced tool materials and optimized tool geometric designs are being developed for improving the tool life and cutting efficiency.