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介绍多组分注射成型工艺技术等混合注射技术,目前已被越来越多的塑料制品生产厂家采用,可生产出多种符合时代要求的塑料制品,如汽车零部件以及电子通讯产品部件等.混合注射成型技术将成为最重要的塑料制品加工工艺之一. 相似文献
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介绍多组分注射成型工艺技术等混合注射技术,目前已被越来越多的塑料制品生产厂家采用,可生产出多种符合时代要求的塑料制品.如汽车零部件以及电子通汛产品部件等。混合注射成型技术将成为最重要的塑料制品加工工艺之一。 相似文献
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随着人们对塑料制品品质要求的提高、应用领域的不断扩展,新的塑料制品成型技术不断涌现,本文综述了近年被进一步研发的动态注射成型、流体辅助注射成型(GAIM和WAIM)、微孔发泡注射成型、高速低压注射成型、交变注射成型、熔芯注射成型、旋转成型及反应挤出成型技术,简介了吹塑技术和模压技术的发展,并描述了其各自的特点.塑料制品的成型技术仍有厂阔的发展空间,能更进一步地提高制品各种性能、制造成本,并拓宽应用领域. 相似文献
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浅析我国塑料成型技术的发展 总被引:2,自引:0,他引:2
随着人们对塑料制品品质要求的提高、应用领域的不断扩展,新的塑料制品成型技术不断涌现,本文综述了近年被进一步研发的动态注射成型、流体辅助注射成型(GAIM和WAIM)、微孔发泡注射成型、高速低压注射成型、交变注射成型、熔芯注射成型、旋转成型及反应挤出成型技术,简介了吹塑技术和模压技术的发展,并描述了其各自的特点。塑料制品的成型技术仍有广阔的发展空间,能更进一步地提高制品各种性能、制造成本,并拓宽应用领域。 相似文献
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介绍了光学塑料制品在注塑成型过程中的主要特点和难点,以及作者在德马格注塑机上实施的为解决光学塑料制品注塑成型问题的技术方案,包含螺杆表面PVD多层CrN镀膜技术,新型止回阀结构设计的螺杆头四件套以及低压注塑(或注射压缩)成型技术等。 相似文献
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《中国塑料》2011,(7)
随着塑料在精密仪器制造行业,特别是在电子、电器、仪表等行业中的广泛应用,对注射成型制品的尺寸精确性、尺寸随时间的变化等提出了更加严格的要求。塑料成型收缩率既是决定塑料制品尺寸精确性的主要因素,又是影响塑料制品表面精度的关键问题。因此,注射成型塑料制品的收缩问题已经引起人们的高度重视,尤其在精密注射成型过程中必须对塑料成型收缩率进行深入细致的研究。同时,在挤出成型过程中也存在尺寸不稳定的问题,尤其是电线电缆的挤出成型。论坛里面的很多坛友对注射成型塑料制品的成型收缩以及挤出成型塑料制品的尺寸不稳定性问题进行了深入的讨论,现将一部分帖子整理如下,供读者参考。我刊今后将不定期将中塑互联,http://bbs.ourplas.cn上优秀的帖子整理刊发,敬请读者关注。 相似文献
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阐述了微注射成型技术的研究进展,比较了微注射成型技术与传统注射成型技术的不同要求,重点分析了微注射成型工艺及其装备的主要特点及研究现状,并基于熔体微分原理,提出了具有自主知识产权的微分注射成型技术及装备。发现采用微分注射成型创新技术,可以用1台微分注射成型装备达到多台微型注塑机的效果,最终实现微塑料制品高效率、低成本、大批量的生产。 相似文献
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微型注塑(Micro-InectionMoulding)一般是指用来成型尺寸为微米级、质量为毫克级的制品的注塑方法。微型系统制品市场在过去短短几年有了很大的发展。本文对微型注塑技术的工艺和应用以及对设备和塑料的要求作了扼要介绍。 相似文献
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Antonio Magurno 《大分子材料与工程》1999,272(1):99-107
This paper gives a brief status of the state of the art of the use of plastic/vegetable fibre composite materials for interior car parts and the technologies to realise such parts (injection moulding, low pressure injection moulding, thermoforming, thermocompression and co-injection moulding). The development activity on composite plastic-wood materials to be used in the automotive sector performed by J.C.A. is also presented, in particular the research lines performed on several kinds of vegetable fibres (eucalyptus, jute, flax, kenaf) to be applied on semi-finished products: granules (short vegetable fibre) for injection moulding, and extruded sheets (long and short vegetable fibre) for thermoforming. 相似文献
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《Journal of the European Ceramic Society》2020,40(4):1057-1066
For the production of C/C-SiC brake discs via the liquid silicon infiltration method (LSI), the hot pressing process is the state of art technique for the moulding of the CFRP composites. This technique consists of several manual steps which increase production cost. The overall cost can be reduced by implementing injection moulding process.In this paper the influence of the moulding process (hot pressing, injection moulding) on the properties of semi-finished and final products during the production of short-fibre-reinforced C/C-SiC composites by means of the LSI process are examined. The starting polymer is chemically characterised. Carbon-fibre-reinforced plastic (CFRP) composites are fabricated by hot pressing, as well as injection moulding process. The CFRP composites are converted into porous C/C composites by pyrolysis. Liquid silicon is infiltrated to form dense C/C-SiC composites, which are further investigated during the course of this paper. Significant differences in properties of the composites are discussed. 相似文献
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介绍以UG中MoldWizard模块作为模具开发平台开发注塑模具的过程,探讨了注塑模具快速高效设计方法,缩短产品开发时间,解决塑料模具设计过程中的一些难点,实现了一模多腔,降低了生产成本。 相似文献
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本文叙述了注塑成型工艺对液压系统的要求,注塑机液压系统的分类和比较;并着重论述了具有八十年代世界先进水平的二通插装比例问的结构和特点及其在注塑机中的应用。 相似文献
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《塑料、橡胶和复合材料》2013,42(1):36-41
AbstractGas assisted injection moulding has become one of the most important methods for the manufacture of plastic products. However, there are several unsolved problems that confound the overall success of this technique. The weldline caused by the flow lead effect in the polymer melt is one of them. In this report, an L′18 orthogonal array design based on the Taguchi method has been conducted to investigate the flow lead induced weldlines in gas assisted injection moulded parts. A plate cavity with a gas channel on the side was used for moulding. Experiments were carried out on an 80 t reciprocating screw injection moulding machine equipped with a high pressure gas injection unit. After moulding, the depth of the weldline was measured. For the factors selected in the main experiments, melt injection temperature and mould temperature were found to be the principal factors affecting the weldline depth of gas assisted injection moulded parts. Experimental investigation of a gas assisted injection moulding problem can help in better understanding the weldlines caused by flow lead effects, so that steps can be taken to optimise the surface quality of moulded parts. PRC/1755 相似文献
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介绍加工助剂LA-D在注塑管件加工中的应用,并从加工工艺的调节角度进行模拟试验。研究表明,LA-D加工助剂能改进加工成型时的塑化均匀性、流动性,降低加工温度,提高制品的质量。 相似文献