• 形状决定挤出塑料产品的型状,如制尼龙绳纤维丝塑料管

    The shape of the die decides the shape of the extruded plastic-a fibre, perhaps, for use in nylon thread, or a tube.

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  • 形状决定挤出塑料产品的型状,如制尼龙绳纤维丝塑料管

    The shape of the die decides the shape of the extruded plastic-a fibre, perhaps, for use in nylon thread, or a tube .

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  • 采用人工神经网络方法预测了受模口温度挤出影响的型成型阶段的膨胀

    Neural network method was used to investigate the parison swell affected by the die temperature and extrusion flow rate.

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  • 本文分析了异型(圆环矩形组合)材成型塑料熔体中的流动机理给出了模口成型长度的设计方法

    While profile, the cross section was composed of annulus and rectangle, was extruded, the flow mechanism the plastic melt in the die was analyzed and the design method of die land was given.

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  • 空气清扫装置可以任何烟雾物质可压缩物

    The air sweep can direct any smoke and condensables away from the die.

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  • 否则也可以使用一个较大的减少应力然后挤出物拉细需要的尺寸

    Or you can use a larger die opening to reduce die-exit stress, and then draw the extrudate down to the desired size.

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  • 进行空气帮助减少控制积料

    Air sweeps pointed at the die exit can help reduce and control buildup.

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  • 一些类型积料会很快氧化变成棕色或者黑色

    Some types of die buildup oxidize quickly and turn brown or black.

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  • 有时较低温度表面生成一个冷却树脂这个树脂层慢慢地移出然后本体料分离从而引起积料

    Sometimes lower die temperatures can create a cool layer of resin on the inner surface of the die that creeps slowly to the die exit and then separates from the bulk flow, causing buildup.

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  • 要设法表面热电偶检查温度

    Try checking the die exit temperature with a surface thermocouple.

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  • 确定真正熔体温度开始,然后按照这个温度设定的温度。

    Start by determining the true melt temperature and set the die body to that temperature.

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  • 较高熔体温度减少应力一种方法

    Higher die and melt temperatures are one way to reduce die-exit stress.

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  • 清除后在出料使用或者硅酮可以减轻积料程度延长清除之间时间。

    Applying mold release or silicone to the die exit area after cleaning can reduce the rate of buildup and extend the time between cleanings.

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  • 解决方法要么减少应力,要么是减少组分熔体分离倾向。

    Solutions are either to reduce die-exit stress or to reduce the tendency for components to separate from the melt.

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  • 可以添加少量氟聚合物加工助剂减轻应力

    Fluoropolymer processing AIDS can also be added in small amounts to reduce stress at the die exit.

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  • 对于简单形状,可以在线运行进行积料清除

    Simple die shapes allow for cleaning while the line is running.

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  • 例如高度不相容聚合物熔融掺混时,常常出现极度积料。

    For example, extreme die buildup often occurs when highly incompatible polymers are melt blended.

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  • 此外表面可能本身冷很多

    Also, the die exit surface can be significantly cooler than the die itself.

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  • 如果发生积料,尝试使用别的供应商的类似牌号

    If die buildup occurs, try a similar grade from another supplier.

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  • 修改据称可以减少积料包括一种方形形陡出、弧形过渡形出、外扩台阶出、内扩台阶出、外展形出()。

    Modified die exits that claim to decrease die buildup include a sharp square exit, sharp pointed exit, radiused exit, outward-stepped exit, inward-stepped exit, and outward-flared exit (see diagram).

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  • 改变挤出牵引角度,就可以改变挤出物上的堆积位置这样容易清除积料了。

    Changing the Angle at which the extrudate is drawn away from the die can change the placement of buildup on the die and make it easier to clean.

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  • 料与应力有关

    Die buildup is related to stress at the die exit.

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  • 结果表明不同角度圆锥挤出过程中,熔体收敛流道受到拉伸流变,导致强烈的弹性效应,表现出熔体在不同角度圆锥挤出时有不同的挤出胀大比。

    The results show that the extensional flow of melt in convergent die results in intense entrance elastic effect and distinct extrusion swell in conical die with different angles.

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  • 结合不同工艺原理分析指出了机头结构特点设计要点

    With different process principle, given the structure property and key design point of die mold of the head.

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  • 应用熔体流动速率仪考察了半径载荷温度聚全氟乙丙烯(FEP)流动性能影响

    The influences of die radius, load and temperature on the flow properties of FEP melt were investigated by using a melt flow indexer.

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  • 其原因包括喂料加热时间过渡熔融太慢混合不良、在存在过多热量损失

    Causes include heating too quickly in the feed zone, melting too slowly in the transition zone, insufficient mixing, and excessive heat loss in the adapters or die.

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  • -流动成功用于研究处出现应力,以及评价-出几何变化

    Die-flow modeling has also been used successfully to study the stresses occurring at the die exit and to evaluate changes in die-exit geometry.

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  • -流动成功用于研究处出现应力,以及评价-出几何变化

    Die-flow modeling has also been used successfully to study the stresses occurring at the die exit and to evaluate changes in die-exit geometry.

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