双级真空挤出机泥料挤出质量控制  

Extrusion Quality Control of Two- stage Vacuum Extruder

作　　者：刘磊[1] 杨自栋[1] 栾新强 苏红星[1] 滕悦江 

机构地区：[1]山东理工大学农业工程与食品科学学院,淄博255049

出　　处：《农业工程》2015年第2期80-84,共5页AGRICULTURAL ENGINEERING

基　　金：山东省优秀中青年科学家基金项目(项目编号:BS2010NY014)

摘　　要：目前双级真空挤出机已经普遍用于砖瓦行业,挤出来的砖具有密度高、机械强度大、含水率适中且均匀、表面质量好等特点,成为今后挤出机研究的主要方向。通过对流变学和流体力学的研究,建立了泥料的弹-黏塑性模型,研究其应力-应变-时间关系,构建了砖瓦泥料的本构方程,并对影响泥料流变特性的因素做了具体分析。通过对挤出机工作原理与机构特点的不断总结,得出了影响挤出效果的主要因素,并给出了可行的控制方案。Nowadays, two-stage vacuum extruder has been widely used in brick and tile industry, and main direction in the fu- ture of extruder research is to squeeze out high density, high mechanical strength, moderate moisture content and uniformity, good surface quality＇s adobe. Elastic-visco plastic model of mud was established through the study of rheology and fluid mechan- ics. Constitutive equation of brick and tile mud was built through studying the relationship of stress- strain- time. Effect factors of rheological properties of mud were analyzed concretely. Main factors that affecting quality of extrusion were found through analy- sis and research of extruder structure and actual working process. Feasible control scheme was put forward.

关 键 词：挤出机 流变特性 控制 泥料 

分 类 号：TU522.05[建筑科学—建筑技术科学]