• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>2001 Global Powertrain Congress on Advanced Engine Design amp; Performance Vol.17, Jun 5-7, 2001, Detroit, Michigan USA >Mechanical Performance of Knit Lines and Welded Butt Joints - A Key Factor in Designing of Multiple Gated Injection Molded and Subsequent Welded Thermoplastic Components
【24h】

Mechanical Performance of Knit Lines and Welded Butt Joints - A Key Factor in Designing of Multiple Gated Injection Molded and Subsequent Welded Thermoplastic Components

机译：编织线和焊接对接接头的机械性能-设计多浇口注塑和随后焊接的热塑性零件的关键因素

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Previously we reported to Antec'96, GPC'99 and GPC2000 our studies on the effects of various welding technologies (linear vibration, orbital vibration, hot plate, infra-red/laser and ultrasonic) on the mechanical performance of welded thermoplastics. Mechanical performance of the welded joints depends on key welding processing parameters, such as weld-melt temperature, clamp and hold pressure, melt-down (melt collapse), hold/cooling time, and thickness of inter-phase. The mechanical properties of the injection-molded thermoplastic components depend on the part and the molding tool design, and utilized molding processing parameters such as melt and mold temperatures, molding pressure, injection rate, cooling time, etc. For injection molding of various welded thermoplastic parts, a complex of multiple gating injection molding tools was used. Both the design of these welded parts and the molding tool design are very important to get optimum flow patterns and to predict the locations of stress-bearing areas and knit (molding) and weld (joining) lines (planes). A recent SAE paper discusses the importance of the knit lines in multiple gated rotating plastic part design. In this study, we discuss the mechanical properties in local (knit lines and welds) and bulk (molded part) areas, with the influence of molding and welding conditions. It has been found that, for non-reinforced and reinforced nylon, the mechanical performance in both the knit planes and weld areas is approximately equal to the mechanical performance of the resin used (nylon/polyamide). The results from this study will help designers to accurately interpret the results of structural analysis of welded parts and complex tensile (as basic) properties, such as strength, deformation and fatigue of nylon based plastics and to utilize these important material parameters at end-use conditions for a part life assessment.
机译：之前，我们曾向Antec'96，GPC'99和GPC2000报告了我们对各种焊接技术（线性振动，轨道振动，热板，红外/激光和超声波）对焊接热塑性塑料机械性能影响的研究。焊接接头的机械性能取决于关键的焊接工艺参数，例如焊接温度，夹紧和保持压力，熔化（熔化塌陷），保持/冷却时间以及相间厚度。注射成型的热塑性塑料部件的机械性能取决于零件和成型工具的设计，并利用成型加工参数，例如熔体和模具温度，成型压力，注射速率，冷却时间等。用于各种焊接热塑性塑料的注射成型零件，使用了多个浇口注塑工具的复合体。这些焊接零件的设计和成型工具的设计对于获得最佳流动模式以及预测承压区域以及编织（成型）和焊接（接合）线（平面）的位置都非常重要。最近的SAE论文讨论了编织线在多门旋转塑料零件设计中的重要性。在这项研究中，我们讨论了局部（编织线和焊缝）和整体（成型零件）区域的机械性能，以及成型和焊接条件的影响。已经发现，对于非增强尼龙和增强尼龙，在编织平面和焊接区域中的机械性能都大约等于所用树脂（尼龙/聚酰胺）的机械性能。这项研究的结果将帮助设计人员准确解释焊接零件的结构分析结果和复杂的拉伸（基本）性能，例如尼龙基塑料的强度，变形和疲劳度，并在最终使用时利用这些重要的材料参数零件寿命评估的条件。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号