Causes of ineffectiveness of plastics extruder screw due to cracking are analysed, briefly intro - duces renovation by welding.
对塑料挤出机螺杆失效断裂原因进行分析，简要介绍了焊接修复情况。
According to the feature of the polypropylene plastics, the technical characteristics and the optimum process parameters in the process of the plastics equipment formation and welding are discussed.
根据聚丙烯塑料的特性，论述了塑料设备成型及焊接制作的工艺特点和最佳工艺参数。
It has been proven that laser welding is not only a viable, but also a better plastics welding method.
证实了激光焊接是一种可行的、更佳的塑料焊接方法。
The welding quality test and performance assessment for pipes become more and more important with the application of engineering plastics pipe.
随着工程塑料管道应用的不断深入，管道的焊接质量检测及其性能评定成了一个重要的问题。
The several main methods of the plastics welding were discussed in details, and its application in the medical product was also introduced.
并简要介绍了塑料焊接技术在医用塑料制品中的应用及发展前景。
The weathering quality of plastics pipe is a valued question, which is relative with welding quality and mechanical fracture.
塑料管的耐老化性能及焊接质量与力学破坏有关，是需要重视的问题。
Acetylene (ethyne) Simplest alkyne, C2H2. A colourless, flammable, explosive gas, it is used as a fuel in welding and cutting metals and as a raw material for many organic compounds and plastics.
乙炔：最简单的炔(C2H2)，无色可燃气体，广泛用作金属焰焊接和切割的燃料，也是合成许多有机化学品和塑料的原料。
The influence of laser transmission welding parameters for polypropylene (PP) plastics on welding quality is investigated by orthogonal design method.
利用正交实验方法，研究了聚丙烯(PP)塑料的激光透射焊接工艺参数对焊接质量的影响。
It has been proven that laser welding is not only a viable, but also a better alternative to other plastics welding methods.
证实了激光焊接是一种可行的、更佳的塑料焊接方法。
Manufacture of car and motorcycle moulds including strike mould, plastics filling mould, mould-pressing mould, etc. and clippers welding clipper, testing clipper, etc.
汽车、摩托车模具(含冲模、注塑模、模压模等)夹具(焊装夹具、检验夹具等)制造。
The applied tests in water by the lance at ice-out and-breaking, plastics-welding and gas-freeing of liquid demonstrated that the cavitation field lance is available for above processes.
试验表明，它用于水下破解冰冻物品、高分子板材焊接和瓶装液体除气方面是可行的。
The applied tests in water by the lance at ice-out and-breaking, plastics-welding and gas-freeing of liquid demonstrated that the cavitation field lance is available for above processes.
试验表明，它用于水下破解冰冻物品、高分子板材焊接和瓶装液体除气方面是可行的。
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