青砖茶模内蒸制工艺负载特性分析  

Loading characteristics of in-mould steaming process for dark-green brick tea

作　　者：滕靖[1,2] 郑鹏程[1] 刘盼盼[1] TENG Jing;ZHENG Pengcheng;LIU Panpan(Fruit and Tea Research Institute of Hubei Academy of Agricultural Sciences,Wuhan 430064,China;Key Laboratory of Digital Manufacturing in Hubei Province(Wuhan University of Technology),Wuhan 430070,China)

机构地区：[1]湖北省农业科学院果树茶叶研究所,湖北武汉430064 [2]数字制造湖北省重点实验室(武汉理工大学),湖北武汉430070

出　　处：《武汉工程大学学报》2025年第2期218-223,共6页Journal of Wuhan Institute of Technology

基　　金：国家现代农业产业技术体系建设专项(CARS-19);国家重点研发计划(2021YFD1601103)。

摘　　要：为进一步优化青砖茶模内蒸制工艺的参数,通过试验数据拟合压制过程中的等效负载,结合AMESim和MATLAB软件平台搭建青砖茶压制联合仿真模型。仿真结果表明:高品质青砖茶的压制时间为5.5 s,比空载过程增加了1.5 s,单运行周期为116.8 s;采用无限位柱结构的模具,以单次单片、双片、三片和四片模式生产成品砖的厚度最大为11.0 mm,最小为10.6 mm,通过降低泵转速至工频值的40%,将成品砖的厚度偏差控制在0.2 mm,而压制过程增加0.5 s;高品质青砖茶压制过程主缸最大压力达到19.5 MPa,且压降比老青砖更快。压制试验结果表明:青砖茶成品砖初次压制后的厚度与仿真结果一致,产能略低于理论值。该仿真模型计算速度快,参数修改方便,有效缩短了青砖茶模具的开发周期,为建立青砖茶专家生产系统奠定了理论基础。To further optimize the parameters of the in-mould steaming process for dark-green brick tea,we fit the equivalent load in the suppression process using experimental data and established a model based on the AMESim and MATLAB software platforms.The simulation results indicated that the pressing process of highquality dark-green brick tea takes 5.5 s,an increase of 1.5 s compared to the unloaded process,with a single cycle time of 116.8 s;in a mould with a structure of infinite number of columns,the maximum and minimum thickness of the finished tea bricks produced in single,double,triple,and quadruple pieces modes is 11.0 and 10.6 mm,respectively.By reducing the pump speed to 40%of the power frequency,the thickness deviation can be controlled within 0.2 mm,while the pressing process increases by 0.5 s.The maximum pressure during the pressing process of high-quality dark-green brick tea reaches 19.5 MPa,and the its pressure drop is faster than that of the old dark-green brick tea.Experimental verification showed that the thickness of the finished dark-green tea bricks is consistent with the simulation results,and the production capacity is slightly lower than the theoretical value.This fast simulation model with easily modifiable parameters effectively shortens the development cycle of the dark-green brick mould and lays a theoretical foundation for the establishment of a dark-green brick tea expert production system.

关 键 词：青砖茶 模内蒸制 负载特性 液压机 液压系统 

分 类 号：TG315.4[金属学及工艺—金属压力加工]