Flowing deviation behavior of plastic melt during micro injection molding process

GUO Youdan; CHENG Xiaonong

doi:10.11949/j.issn.0438-1157.20141214

您当前的位置：

首页 >

文章列表页 >

Flowing deviation behavior of plastic melt during micro injection molding process

更新时间：2025-12-10

- Flowing deviation behavior of plastic melt during micro injection molding process
- CIESC Journal Issue 6, Pages: 2329-2335(2015)
- 作者机构：
  
  1. 集美大学机械与能源工程学院,福建,厦门,361021
  2. 江苏大学材料科学与工程学院,江苏,镇江,212013
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141214
  CLC： Q320
- Online First：25 March 2015，
  
  Published：25 March 2015
- 稿件说明：
移动端阅览
GUO Youdan, CHENG Xiaonong. Flowing deviation behavior of plastic melt during micro injection molding process[J]. CIESC Journal, 2015, (6): 2329-2335.
DOI：

GUO Youdan, CHENG Xiaonong. Flowing deviation behavior of plastic melt during micro injection molding process[J]. CIESC Journal, 2015, (6): 2329-2335. DOI： 10.11949/j.issn.0438-1157.20141214.

摘要

采用集成式热电偶传感器温度测量系统和可视化全息示踪技术

对多型腔微注塑成型过程熔体流动前沿在型腔内的偏移现象进行观察和分析。结果表明

当注射速度为140~220 mm·s-1时

主流道内的塑料熔体前沿呈“U型流”状态分布

分流道内塑料熔体前沿向上侧偏移;当注射速度为10~70 mm·s-1时

主流道塑料熔体前沿呈“喷泉流”状态分布

分流道熔体前沿向下侧偏移;当注射速度为80~120 mm·s-1时

主流道和分流道熔体前沿均没有明显的偏移。说明微注塑时注射速度不同

产生的剪切热也不同

熔体前沿偏移情况也不同。为此

引入非平衡流动系数λ

来判断熔体前沿的流动和偏移情况。

Abstract

The migration phenomenon of the melt flow front of multi-cavity micro injection molding process within the cavity is observed and analyzed using temperature measuring system equipped of integration of thermocouple sensor and visualization holographic tracer technique. The experimental results show that in the injection rate of 140-220 mm·s-1

the plastic melt front in the main runner is“U flow state”

while it is upper offset within secondary runner; in the injection rate of 10-70 mm·s-1

the plastic melt front in the main runner is“fountain” flow state

while it is down offset within secondary runner; and in the injection rate of 80-120 mm·s-1

the plastic melt fronts within both main and secondary runners have no obvious offset. The results indicate that the injection speed is different during the micro injection molding

leading to various shear heat and also melt front offset. Therefore

a nonequilibrium flow coefficient λ is introduced to determine the flow of the melt front and offset.

关键词

Keywords

references

Views

286

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Experimental study of heat transfer enhancement by pressure waves in cross flow tube bundles

Controlled synthesis of Bi2MoO6/MoO3 composite fibers via in-situ hydrothermal method and their high-efficiency photocatalytic hydrogen production performance

Research progress of ionic liquids in separation of aromatics/alkanes and olefins/alkanes

Thermo-gas-elastic coupling performance analysis of high-speed and high-temperature foil face seals

Thermo-oxidative degradation characteristics of TPT backsheet from end-of-life photovoltaic modules

Related Author

No data

Related Institution

No data

⁰