摘要
为研究生物质平模成型机的攫取成型机理,将棉花秸秆原料压缩成颗粒,通过场发射扫描电子显微镜对生物质平模成型机的供料区、压紧区、压实区、成型区的原料及压辊磨损前后期成型颗粒的组织进行微观形貌观察研究,对比不同阶段物料的微观形态。结果表明:随着压辊转动,散乱的物料方向变化明显,物料间相互填充,空隙减小。压实区物料主要发生弹性与塑性变形,微观结构被破坏,纤维层与层之间紧密胶合,方向形态基本稳定,以有序的排列进入成型孔。颗粒密度通过成型孔进一步增大,颗粒间结合得更加紧密。压辊磨损后期的成型颗粒纵横方向性较前期的混乱,同时生产效率降低、成型密度减小。研究结果旨在为生物质平模成型机优化设计提供理论参考。
The seizing forming mechanism of biomass flat forming machine was observed by compressing cotton stalk into particles. The micromorphology of material of biomass flat forming machine including feeding area, impacting area, compacting area, forming area and forming particle of roll wearing at earlier and later time were studied and compared by the field emission scanning electron microscope. The results showed that the direction of disordered material changes obviously and while materials fill each other and the inter-space decreases with press roll rotating.The elastic plastic deformation occured in compacting area. Microstructure was destroyed and the fibers floors tightly glued. The morphology of direction stabilizes almost meanwhile material turns ordered into forming hole. The more density of particle increaseed, the tighter particle combines through forming hole. The particle of the later abrasion of press roll in vertical and horizontal direction was more chaos than the previous. while the production efficiency reduces and forming density decreases. The results can provide important basis theory to design the biomass forming equipment.
出处
《可再生能源》
CAS
北大核心
2015年第6期921-925,共5页
Renewable Energy Resources
基金
国家科技支撑计划(2012BAD30B01)
关键词
成型
微观机理研究
攫取
平模成型机
forming
microstructure mechanism
seize
flat forming machine
作者简介
邢献军（1964-），男，安徽无为人，教授，博士生导师，主要研究方向为生物质能源工程。E—mail：xxianjun@mail．ustc．edu．cn
通讯作者：马培勇（1980-），男，山东济宁人，副教授，主要从事生物质能源研究工作。E—mail：mapeiyong@163．com
