提出了一个分析浇口位置对熔接痕影响的方法。
This paper presents a method to explore the implications of gate location on weld lines.
转压点太高：产品充模不足，熔接痕，凹陷，尺寸偏小等。
Too high switch point: empty part, weld line, sink mark, and small.
试验表明，熔接痕形成的微裂纹对制品应变值的影响较大；
The experiment result shows that the strain affected by microcrack which was composed of weld 1ine seriously.
结果表明，采用阀式浇注技术对控制熔接痕取得了较好的效果。
The results show that the weld marks are well controlled by this method.
预测可能存在的熔接痕位置及锁模力的大小，确定最佳浇口位置。
In order to obtain the best gate location addition, the position of weld lines and the clamp force were forecasted.
介绍了汽车大型外观塑件的质量标准，分析了塑件熔接痕形成的原因。
The quality standard of automobile large-scale plastic outside part was summarized. The forming mechanism of weld mark was analyzed.
研究发现，熔接痕的结构与材料配方、挤出机机头模具及加工工艺参数均有关系。
The research showed that the structure of weld mark was connected with the material formulation, die mould of extrusion machine and parameters of processing technology.
分析了熔接痕CAE的特点及误差，并针对不同影响因素，给出了相应控制对策。
The peculiarity and error of CAE were analysed, and corresponding control measures for the weld line were proposed according to different affecting factors.
预测可能存在的气泡、熔接痕的位置，确定最佳浇口位置，并在此基础上设计模具。
In order to obtain the best gate location addition, the position of air bubbles and weld lines were forecasted.
②塑料件前壳试验：将两组较优浇口方案产生的熔接痕位置调整到跌落方向的最低处。
The drop simulation for the front plastic shell have been done with take the position of weld line which result from the two relatively optimal projects to the lowest location.
但是，注塑成型常常出现各种质量问题，例如，短射、飞边、翘曲、熔接痕和尺寸误差等。
But injection molding often results many product's problems such as short shots, overflow edges, warp, weld line, dimension error and so on.
通过比较分析结果，选择出填充效果均匀、熔接痕位不明显、气穴位置集中的较好成型方案。
By comparing analysis results, the best moulding project is chosen filling effect being unifor with unobvious weld line and centralizing air traps.
通过比较试验发现，顺序浇注系统能非常有效地消除熔接痕，为消除大型塑件熔接痕提供了借鉴。
Through the comparative experiment it was discovered that the sequence running system can avoid weld mask availability which provide a better way to avoid weld mask in large-scale plastic part.
利用压缩比与平直段的长度存在补偿效应的结论，从压力分布及压力降的比较中考察其对熔接痕形成的影响。
Using the theory of compensation effect between compress ratio and the length of straight section, the pressure of flow channel were mainly study according its influence on melt line.
进而应用CAE软件进行分析，通过调整浇口位置，对熔接痕的长度进行优化，使其减少到最小，结果得到实践验证。
Then using CAE analysis and through adjusting the gate position, weld lines can be optimized to the minimum length, and this result has also been identified by practice.
本文利用有限元法对塑料管材的挤出进行模拟。主要讨论了影响塑料管材挤熔接痕形成的因素，以及管子冷却过程的热传递。
This essay described the FEM simulation of plastic pipe extrusion: the factors of melt line formation and heat transfer of cooling processing were mainly discussed.
本文利用有限元法对塑料管材的挤出进行模拟。主要讨论了影响塑料管材挤熔接痕形成的因素，以及管子冷却过程的热传递。
This essay described the FEM simulation of plastic pipe extrusion: the factors of melt line formation and heat transfer of cooling processing were mainly discussed.
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