模口的形状决定了挤出塑料产品的型状，如制尼龙绳用的纤维丝或塑料管。
The shape of the die decides the shape of the extruded plastic-a fibre, perhaps, for use in nylon thread, or a tube.
采用人工神经网络方法预测了受模口温度和挤出流率影响的型坯成型阶段的膨胀。
Neural network method was used to investigate the parison swell affected by the die temperature and extrusion flow rate.
模口的形状决定了挤出塑料产品的型状，如制尼龙绳用的纤维丝或塑料管。
The shape of the die decides the shape of the extruded plastic-a fibre, perhaps, for use in nylon thread, or a tube .
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.
应用熔体流动速率仪考察了口模半径、载荷及温度对聚全氟乙丙烯（FEP）流动性能的影响。
The influences of die radius, load and temperature on the flow properties of FEP melt were investigated by using a melt flow indexer.
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.
上模为中部开有锥形焊口的铜制模块，焊口位置与底模熔池对应。
The copper-made die block in which a conical welding opening is bored is arranged on the middle part of the upper die.
结果表明，圆锥短口模挤出过程中，熔体在收敛流道受到拉伸流变，导致强烈的入口弹性效应，表现为熔体在短口模挤出时显著的挤出胀大。
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.
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.
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.
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).
一些类型的口模积料会很快氧化并变成棕色或者黑色。
Some types of die buildup oxidize quickly and turn brown or black.
清除积料后在口模出料口使用脱模剂或者硅酮可以减轻积料程度并延长两次清除之间的时间。
Applying mold release or silicone to the die exit area after cleaning can reduce the rate of buildup and extend the time between cleanings.
例如，高度不相容的聚合物熔融掺混时，常常出现极度的口模积料。
For example, extreme die buildup often occurs when highly incompatible polymers are melt blended.
改变挤出物的牵引角度，就可以改变挤出物在口模上的堆积位置，这样就容易清除积料了。
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.
深入讨论了聚合物熔体在不同长径比、不同角度圆锥口模的挤出胀大现象及机理。
Discussed thoroughly the extrusion swell phenomenon and mechanism of polymer melts in conical die with different entrance angles and different ratios of length to diameter.
与传统的拉伸辊牵伸、静压挤出及柱塞式挤出工艺相比，口模牵伸具有明显的优越性和发展潜力。
Compared with conventional tensile drawing and hydrostatic or ram extrusion, die drawing process has considerable advantages and developing potentials.
对刚塑性有限元计算的结果与试验结果进行比较，并提出缩口的最佳模角。
The theoretically calculating results are compared with those of experiment and the optimum die Angle in nosing process is proposed.
MF R采用的数值是在一定的条件下通过口模的聚合物熔体的重量，所以MF R越大，熔体粘度越低，而材料的流动性就越好。
The quoted MFR value is the weight of polymer melt flowing through an orifice in specified conditions, so the higher the MFR value, the lower the melt viscosity and the easier the material will flow.
介绍了导管弯曲扩口模的结构特点及模具工作过程。
The structural feature and working process of the bending flaring die for conduct pipe was introduced.
通过对异型材截面形状及原材料挤出成型性能分析，设计了正确的口模形状及合理的流线形流道；
The feeding head shape of a die and a streamlined sprue runner were designed after an analysis on the cross sectional shape and the extrusion forming ability of PA66 material.
深入讨论了聚合物熔体在不同长径比、不同角度圆锥口模的挤出胀大现象及机理。
This paper discusses thoroughly the extrusion swell phenomenon and mechanism of polymer melts in conical die with different entrance angles and different ratio of length to diameter.
入口形状为圆弧的整形模其入口曲率半径R的选择和入口形状为锥度的整形模其入口角度的选择，以及精整中消除喇叭口的措施。
The determination of entrance angle of both R coining dies and conical coining dies and the approach to eliminating bell shapes during sizing have been outlined.
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.
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.
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.
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.
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.
研究了可膨胀石墨含量和温度对复合保护渣导热系数的影响规律。研究结果可用于：计算钢锭模帽口散热及帽口内钢水凝固时间；
The effect of expanding graphite content and temperature on the thermal conductivity of compound mold flux is studied through laboratorial measures.
研究了可膨胀石墨含量和温度对复合保护渣导热系数的影响规律。研究结果可用于：计算钢锭模帽口散热及帽口内钢水凝固时间；
The effect of expanding graphite content and temperature on the thermal conductivity of compound mold flux is studied through laboratorial measures.
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