材料成型及控制工程专业的专业英语翻译

polystyrene (PS) 聚苯乙烯;poly-tetra-fluoro-ethylene (PTFE)聚四氟乙烯;vacuum forming吸塑;ram injection moulding machine柱塞式注射成型机;计算机辅助设计computer aided design;热塑性塑料thermoplastics;ram injection moulding machines;模具维持费用 ;聚合物分子的几何形状the geometrical form of polymer molecule;模具设计die design;注射成型机injection moulding;热处理heart treatment;抗拉强度tensile serength;对焊buttwelding;自由锻open die forging;粉末冶金powder metalurgy;注射模塑injection molding;线状聚合物linear polymer;球化spheroidzing;正火normalizing;回火tempering;临界温度critical temperature。

1. The time has probably come to adapt a new name more worthy of the exciting range of polymer materials with many different properties which are available to engineers.

目前塑料定义已可能迎来新的术语,以阐述具有不同属性可用于工程领域的聚合物材料。

2.It should be noticed that compression moulding would be impracticable for thermoplastics which have no curing stage during which a chemical reaction take place; because the mould would require cooling each cycle in order to allow the component to harden sufficiently for extraction. 需要指出的是,热塑性塑料压缩成型是不可行的。因热塑性塑料没有发生化学反应的固化阶段,为使塑料足够硬化以便脱模,模具每个工作循环都需要冷却。 3.To sum up there is a complex time- temperature-stress-strain relationship which affects the mechanical behavior of all plastics, and

much more data is required by the designer than at present exists 总之存在着复杂的影响所有塑料力学性能的时间温度和应力应变的关系,对设计者而言,需要比目前更多的资料和数据。

4.Heat treatment is thermal cycling involving one or more reheating and cooling operations after forging for the purpose of obtaining desired microstructures and mechanical properties in a forging.

热处理锻后进行一次或多次重新加热和冷却操作的热循环过程,以便使锻件获得所需的显微组织和机械性能。

5.During curing all the small molecules are chemically linked together to form one giant network molecule. Hence they are distinguished from the linear polymer (thermoplastics)by being called network polymers. 固化时所有小分子通过化学反应连接起来形成巨大的网状分子。因此它们区别于线状聚合物(热塑性塑料) 而正如其名———网状聚合物。

原材料单体是由聚合物构成的。他们在生产过程中通过各种各样的技术以液体、板料、颗粒和粉末的形式补充进来, 其中压缩成型、传递成型和注射成型广泛用于工程构件。

压缩成型主要用于热固性塑料的生产,采用一系列的模具设计来抵消工艺过程中固有的许多问题。主要问题是聚合物在型腔内的流动性差,尽管可以通过执行上述方法在一定程度上减少,但它仍然是主要缺点。

传递成型通过在模腔外部塑化聚合物,然后迫使以更好的流动性通过转变外口来克服这缺点,这使自身引起一个问题,然而,随着热固性塑料在外口固化的

同时模具也塑化。这残料废品必须除去和抛弃,延长了生产时间和增加了成本。 注塑成型与热塑性塑料的工艺非常相似。然而,可以通过保持注塑喷嘴短和回收物料是它不遭受同样的问题。螺杆挤压机比柱塞注射机用得更加广泛并和适合连续生产技术。

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