摘要
在分析消失模铸造模样成型工艺过程的基础上,讨论了共聚物珠粒经预发泡后的模样成型过程,配置了消失模模样成型机控制系统的硬件组成,系统以西门子S7-200PLC为控制核心,选择MCGS TPC1262K的触摸屏作为上位机,进行参数设置。该控制系统在软件设计时,将模具型腔射料、蒸汽加热二次发泡、喷水冷却、负压干燥等成形工艺结合起来,使消失模样成型过程实现自动化,同时可以进行手动单工序操作。最后对成型阶段中模具型腔温度过热导致模样密度和强度过低的情况进行了分析讨论。
Based on the analysis of the EPC pattern forming process, the pattern forming process after the pre-expanded copolymer beads was discussed. The control system hardware was configured in weld mold pattern forming machine. Taking siemens S7-200PLC as control center, MCGS TPC1262K display as the parameter setting tool, the control system software was designed. The mold cavity emitting materials, steam heating secondary foam, spray cold and vacuum drying process engineering were put together in the systrm, the automation of foam pattern forming process can be realized with manual single step operation. Finally, in order to prevent overheating patten with low density and strength, the closed-loop control of complementary double solenoid valve to regulate the temperature was proposed.
作者
朱黎丽
武艳
张福庆
ZHU Lili WU Yan ZHANG Fuqing(School of Electrical Engineering, Chongqing Vocational Institute of Engineering, Chongqing 402260, China School of Material Engineering, Changzhou University, Changzhou 213016, China)
出处
《铸造技术》
CAS
北大核心
2017年第4期938-941,共4页
Foundry Technology
