退火后线径变细：铜线在硬态时，出口模就是定径模，张力大小不至于把线径拉丝。
When annealed wire diameter necking: copper wire in hard state, export module is sizing die, tension size not the wire diameter wire drawing.
由实验证明胶丝挤出口模圆锥形通道比圆柱形通道能改善挤出条件，提高挤出质量。
The experiment has proved that mucilage at the extrude die with conicylindricalpassage is better than that with cylindrical passage in extruding condition and production.
根据流变学理论设计出口模的初始口型曲线尺寸，并进行试挤以修正模头各流道及口型曲线尺寸。
The starting curve and size of the die were already designed according to the rheological theory and then corrected with the extruding experiments.
主要采用一种具有复合应力场的挤出口模，通过固态挤出茂金属线性低密度聚乙烯获得双向自增强片材。
Biaxial self-reinforced metallocene linear low density polyethylene sheet was prepared by the die with complex stress field in solid state.
对着口模出口进行空气吹扫能帮助减少和控制积料。
Air sweeps pointed at the die exit can help reduce and control buildup.
有时，较低的口模温度会在口模内表面上生成一个冷却的树脂层，这个树脂层慢慢地移出到口模出口，然后与本体料流分离，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.
否则，你也可以使用一个较大的口模开口，以减少口模出口应力，然后把挤出物拉细到所需要的尺寸。
Or you can use a larger die opening to reduce die-exit stress, and then draw the extrudate down to the desired size.
较高的口模和熔体温度是减少口模出口应力的一种方法。
Higher die and melt temperatures are one way to reduce die-exit stress.
也可以添加少量的氟聚合物加工助剂来减轻口模出口的应力。
Fluoropolymer processing AIDS can also be added in small amounts to reduce stress at the die exit.
解决方法要么是减少口模出口应力，要么是减少组分从熔体中分离的倾向。
Solutions are either to reduce die-exit stress or to reduce the tendency for components to separate from the melt.
修改的口模出口据称可以减少口模积料，包括一种方形陡出口、尖形陡出口、弧形过渡形出口、外扩台阶出口、内扩台阶出口、外展形出口(见图)。
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).
更有效的方法是将加有氟聚合物的金属涂层施予口模内部，以减少口模出口的应力。
More effective is application of metallic coatings that incorporate fluoropolymers to the inside of the die to reduce stress at the die exit.
通过算例表明，应用该法进行口模优化设计可以减小压力降和口模出口速率变化率。
An example shows that using this method can obtain a uniform velocity profile across the die and minimize pressure drop.
口模-流动模拟也被成功用于研究口模出口处出现的应力，以及评价口模-出口几何的变化。
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.
提出一种新型的能够保证熔体在口模出口处速度及压力均匀分布的片材机头。
A new type sheeting die which can guarantee the polymer fluid get the even velocity and pressure distribution at the mold export was put forward.
具有窄分子量分布的树脂会有低的出口膨胀，但这不意味着它一定有较少的口模积料。
Resins with narrow molecular-weight distribution can have lower die swell, but this doesn't necessarily mean less buildup.
这些影响因素使得口模出口处压力、法向速度和剪切速率均不为零，从而引发离模膨胀等问题。
These factors make the die exit pressure, normal velocity and shear rate not to be zero, thus lead to problems including die swell and etc.
适当增加流道的长度，可以减小胶料出口处的速度场、剪切速率场的集中程度并使之趋于均匀，能够有效降低挤出胀大和模外熔体偏转流动现象。
The velocity field and shear rate distribution are reduced and uniform along with the proper increase of slip length. The die swell and the interface deflexion phenomenon will be reduced effectively.
适当增加流道的长度，可以减小胶料出口处的速度场、剪切速率场的集中程度并使之趋于均匀，能够有效降低挤出胀大和模外熔体偏转流动现象。
The velocity field and shear rate distribution are reduced and uniform along with the proper increase of slip length. The die swell and the interface deflexion phenomenon will be reduced effectively.
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