| Study on Extrusion Stability of L-type Wide Extrusion Die |
| Received:June 16, 2020 Revised:June 16, 2020 |
| DOI：10.12136/j.issn.1000-890X.2021.09.0682 |
| Key Words: L-type wide extrusion die；polymer sheet；extrusion stability；non-isothermal flow field； wall temperature；feed port pressure；damping width；damping height |
| Author Name | Affiliation | E-mail | | JIAO Dongmei | Qingdao University of Science and Technology | jiaodongmei@gmail.com | | YUAN Shishuai* | Qingdao University of Science and Technology | | | ZHANG Tao | Qingdao Hanhe Cable Co.，Ltd | | | GUO Chao | Qingdao University of Science and Technology | | | LI Dongyan | Qingdao University of Science and Technology | |
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| Abstract: |
| Numerical simulation of the three-dimensional non-isothermal flow field in the flow channel of the L-type wide extrusion die was carried out through ANSYS software，the flow field law of polymer material in the non-isothermal extrusion process was analyzed，and the influence of parameters such as the wall temperature of the die flow channel，feed port pressure，damping width and damping height on the material flow in the die channel was discussed. The results showed that the damping width had a significant pressure regulating effect on the material；the parameters of the flow channel die had different influences on the extrusion pressure and uniformity of the material. When the wall temperature was 338 ～ 343 K，the feed port pressure was 15. 0～19. 6 MPa，the damping width was 8 mm and the damping height was 3 mm，the uniformity and stability of the material extrusion were better，and the extrusion quality and output of the polymer sheet could be balanced. |
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