Numerical studies of temperature effect on the extrusion fracture and swell of plastic micro-pipe

2017 International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Ren, Zhong^1 ; Huang, Xingyuan^2 ; Xiong, Zhihua^1

Key Lab. of Optical-electronics and Communication, Jiangxi Science and Technology Normal University, Nan Chang, China^1

School of Mechanical and Electrical Engineering, Nanchang University, Nan Chang, China^2

关键词: Effect of temperature;    Extrusion forming;    Extrusion swell;    Flow volumes;    Key factors;    Numerical results;    Stress values;    Swelling ratio;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/322/2/022036/pdf
DOI  :  10.1088/1757-899X/322/2/022036

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Temperature is a key factor that impacts extrusion forming quality of plastic micro-pipe. In this study, the effect of temperature on extrusion fracture and swell of plastic micro-pipe was investigated by numerical method. Under a certain of the melt's flow volume, the extrusion pattern, extrusion swelling ratio of melt are obtained under different temperatures. Results show that the extrusion swelling ratio of plastic micro-pipe decreases with increasing of temperature. In order to study the reason of temperature effect, the physical distributions of plastic micro-pipe are gotten. Numerical results show that the viscosity, pressure, stress value of melt are all decreased with the increasing of temperature, which leads to decrease the extrusion swell and fracture phenomenon for the plastic micro-pipe.