玻璃纤维增强制件注射成型过程的模具磨损原因及规律

doi:10.19491/j.issn.1001-9278.2020.08.007

中国塑料 ›› 2020, Vol. 34 ›› Issue (8): 44-49.DOI: 10.19491/j.issn.1001-9278.2020.08.007

玻璃纤维增强制件注射成型过程的模具磨损原因及规律

高易仁, 王敏杰(), 李红霞

大连理工大学机械工程学院，辽宁大连 116024

收稿日期:2020-03-06 出版日期:2020-08-26 发布日期:2020-08-26

Reason and Regularity of Injection Mold Wear for Glass⁃fiber⁃reinforced Part

Yiren GAO, Minjie WANG(), Hongxia LI

School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China

Received:2020-03-06 Online:2020-08-26 Published:2020-08-26
Contact: Minjie WANG E-mail:mjwang@dlut.edu.cn

摘要/Abstract

摘要：

玻璃纤维增强聚醚酰亚胺（PEI）薄壁制件注射成型过程中，易对模具型芯产生磨损，从而严重影响制件成型品质。以某型号手机听筒薄壁制件为例，根据生产实践分析了型芯表面的微观磨损特性，采用数值计算方法研究了型腔近壁面的熔体流动行为以及型芯表面材料的冲蚀破坏形式与磨损规律。结果表明，注塑过程中型芯表面材料发生冲蚀磨损形成月牙形凹槽，型腔近壁面上的熔体流速决定了月牙形凹槽的形貌和尺寸，玻璃纤维粒子的入射角和倾角决定了型芯表面材料的冲蚀破坏形式，冲蚀磨损量随着玻璃纤维粒子侧倾角的增大不断增加，随着入射速度的增大呈指数型增加。

关键词: 玻璃纤维增强聚醚酰亚胺, 薄壁制件, 注射成型过程, 模具型芯, 冲蚀磨损

Abstract:

In the injection molding process of the thin-walled part based on glass-fiber-reinforced polyetherimide, the core of the mold is easily worn, which seriously affects the quality of the part. Taking the thin-walled part of certain mobile phone as an example, and the micro wear characteristics of the core surface were analyzed in view of the practical production, and the melt flow behavior near the wall of the cavity and the erosion failure form and wear law of the surface material of the core were studied by a numerical method. The results indicated that during the injection process, the surface material of the core was eroded to form a crescent shaped groove, and the melt velocity near the wall of the cavity determined the shape and size of the crescent shaped groove. The incidence angle and dip angle of the glass fiber particles determined the erosion failure form of the material on the surface of the core. The wear amount increased with an increase of the roll angle of glass fiber particles, and the increment was exponential with an increase of the incidence speed.

Key words: glass-fiber-reinforced polyetherimide, thin-walled part, injection molding process, mold core, erosion wear

中图分类号:

TQ320.66⁺2

高易仁, 王敏杰, 李红霞. 玻璃纤维增强制件注射成型过程的模具磨损原因及规律[J]. 中国塑料, 2020, 34(8): 44-49.

Yiren GAO, Minjie WANG, Hongxia LI. Reason and Regularity of Injection Mold Wear for Glass⁃fiber⁃reinforced Part[J]. China Plastics, 2020, 34(8): 44-49.

图/表 13

图1 模具型芯受冲蚀区域及表面微观磨损形貌

Fig.1 Erosion area and surface micro wear morphology of the mould core

图2 模具型芯表面形成的变形唇

Fig.2 Deformed lip formed on the surface of the mould core

图3 型芯磨损引起的薄壁制件缺陷

Fig.3 Defect of the thin?walled part caused by core wear

图4 模具浇注系统的网格划分

Fig.4 Grid generation of the mould gating system

图5 模具浇口附近的局部图

Fig.5 Local graph near the mould gate

图6 浇口附近的熔体流动情况

Fig.6 Flow condition of melt near the mould gate

图7 型腔近壁面多场分布云图及玻璃纤维粒子取向

Fig.7 Multi field cloud pattern in the cavity near the wall and orientation of glass fiber particles

图8 浇口附近的熔体流速矢量图

Fig.8 Vector graph of melt velocity near the mould gate

图9 型腔近壁面1的熔体流速分布情况

Fig.9 Melt velocity distribution near the wall 1 of the cavity

图10 玻璃纤维粒子对模具表面的冲蚀示意图

Fig.10 Erosion diagram of glass fiber particle on the mould surface

图11 冲蚀过程物理模型的网格划分

Fig.11 Grid generation of physical model in erosion process

图12 不同入射角下模具靶材冲蚀情况（H13模具钢）

Fig.12 Erosion of mould target material at different incident angles (H13 mould steel)

图13 不同入射条件对模具靶材冲蚀量的影响

Fig.13 Influence of different incident conditions on erosion amount of the mould target material

参考文献 10

1	陶国源. 聚醚酰亚胺(PEI)的性能、加工及应用[J]. 塑料制造, 2006(7):38⁃45.
	TAO G Y. Properties, Processing and Application of Polyetherimide[J]. Plastics Manufacture, 2006(7):38⁃45.
2	KIM S H, YOUM J S, LEE M S, et al. Effect of Poly (ether imide) Blends on the Physical Properties of Thermoplastic Glass Mat Composites [J]. Advanced Composite Materials, 2018, 27(6):637⁃652.
3	BREZINOVA J, GUZANOVA A. Friction Conditions During the Wear of Injection Mold Functional Parts in Contact with Polymer Composites [J]. Journal of Reinforced Plastics and Composites, 2010, 29(11):1 712⁃1 726.
4	BLUTMAGER A, VARGA M, SCHMIDT T, et al. Abrasive/Erosive Wear on MMCs in Plastic Molds as a Function of Volumetric Flow Rates and Glass Fiber Distribution [J]. Polymer Engineering and Science, 2019, 59(1):302⁃311.
5	GIUSTI R, VEZZU S, LUCCCHETTA G. Wear⁃resistant Cobalt⁃based Coatings for Injection Moulds by Cold Spray [J]. Surface Engineering, 2016, 32(9):677⁃685.
6	NUNTHAVARAWONG P. Slurry Erosion Model for Wear Performance Prediction of Tool Steel [J]. Advanced Materials Research, 2013, 717(2):194⁃195.
7	MARTINEZ⁃MATEO I, CARRION⁃VILCHES F J, SANES J, et al. Surface Damage of Mold Steel and Its Influence on Surface Roughness of Injection Molded Plastic Parts [J]. Wear, 2011, 271(9/10):2 512⁃2 516.
8	蒋奔, 翟明, 任建行,等. 纤维增强塑料注射充模过程中纤维对模具的冲蚀磨损模拟[J]. 化工学报, 2018, 69(7):3 174⁃3 180.
	JIANG B, ZHAI M, REN J X, et al. Simulation of Fiber Erosion on Mold During Filling Process of Fiber Reinforced Plastic Injection Molding [J]. CIESC Journal, 2018, 69(7):3 174⁃3 180.
9	WANG Y, YANG Z. Finite Element Model of Erosive Wear on Ductile and Brittle Materials[J]. Wear, 2008, 265(5/6):871⁃878.
10	林福严, 曲敬信, 陈华辉. 磨损理论与抗磨技术[M]. 北京: 科学出版社, 1993:64⁃69.

[1]	李正典, 宋乐, 李明昊, 何雪涛, 谢鹏程, 杨卫民. 注射成型柔性制造模具系统的设计与实验研究[J]. 中国塑料, 2022, 36(7): 104-108.
[2]	王晓东, 王权, 陈拓, 郑悦. 基于灰色关联分析和熵权法的双色注塑多目标参数优化[J]. 中国塑料, 2022, 36(7): 115-120.
[3]	胥永林, 张维合, 冯国树, 宋东阳, 杜海, 王靖, 魏海涛. 智能热水壶主体复杂抽芯及随形水路注塑模设计[J]. 中国塑料, 2022, 36(6): 137-141.
[4]	欧阳宇, 刘泓滨. 基于主成分分析结合灰色关联度的PPO/PA翼子板注射成型研究[J]. 中国塑料, 2022, 36(5): 99-103.
[5]	翟玉娇, 信春玲, 何亚东, 闫宝瑞, 乔林军. 聚丙烯/超临界氮气微孔注塑充模过程工艺参数研究[J]. 中国塑料, 2022, 36(3): 69-74.
[6]	任立辉, 李富柱, 王匀, 戴亚春, 杨辉, 许桢英. 基于优劣解距离法⁃灰色关联分析的注射成型质量多目标优化[J]. 中国塑料, 2022, 36(2): 96-102.
[7]	张维合, 冯国树, 朱晓敏, 吴梓纯, 叶明山, 杜海, 宋东阳, 王靖. 汽车右后门板顺序阀热流道大型薄壁注塑模具设计[J]. 中国塑料, 2022, 36(1): 166-171.
[8]	郑方莉, 傅南红, 焦晓龙, 杨卫民, 谢鹏程. 人工智能在注射成型参数设置及优化中的研究进展[J]. 中国塑料, 2022, 36(1): 84-91.
[9]	吴俊超. 基于Moldflow的汽车仪表板大型塑件注塑模工艺优化[J]. 中国塑料, 2021, 35(12): 121-128.
[10]	孙令真, 叶烁. 分体空调底盘注塑模具设计[J]. 中国塑料, 2021, 35(12): 129-136.
[11]	于盛睿, 邹佳勇, 骆杰, 曾义和, 刘广, 凌妍, 王云明, 韩文, 周华民. 非对称温度场下微孔发泡模内表面装饰复合成型工艺的翘曲变形[J]. 中国塑料, 2021, 35(12): 63-69.
[12]	孙霖杰, 张经伟, 陈树山, 赖焕生, 魏作友. 高密度聚乙烯管耐氯氧化试验系统设计[J]. 中国塑料, 2021, 35(12): 70-75.
[13]	薛茂远, 梅益, 罗宁康, 唐芳艳, 肖展开. 基于模糊集的车用升降器开关面板注射成型保压曲线优化研究[J]. 中国塑料, 2021, 35(10): 76-82.
[14]	厉邵, 王小新, 周乐辉, 傅诺锋, 钟建权. 塑料黏度和制品壁厚对夹芯注射芯层穿透效果的影响研究[J]. 中国塑料, 2021, 35(10): 83-87.
[15]	王彦卿, 匡唐清, 赖家美, 柳和生, 刘天. 气体⁃水辅助注塑技术的初步研究[J]. 中国塑料, 2021, 35(7): 69-73.

玻璃纤维增强制件注射成型过程的模具磨损原因及规律

Reason and Regularity of Injection Mold Wear for Glass⁃fiber⁃reinforced Part

RichHTML

PDF

可视化

摘要/Abstract

引用本文

使用本文

图/表 13

参考文献 10

相关文章 15

编辑推荐

Metrics

本文评价