宜兴市工程塑料设备厂

宜兴市工程塑料设备厂是硫磷中心和中国硫磷协会定点企业,中国发酵行业会员单位,专业生产耐腐耐磨化工泵——工程塑料泵,该系列泵过流部件采用超高分子量聚乙烯（UHMWPE）制作,其耐腐蚀性能优良,耐磨性能优异（居各种塑料之首）耐冲击抗结晶性能强。我厂又在此基础上,通过进一步改性,使     

叩响汽车材料的发展脉搏——专访帝斯曼工程塑料亚太区汽车ADTS经理Marc Huisman博士

塑料对当今的汽车行业有着重大的贡献,作为专业的汽车材料开发商供应商,帝斯曼工程塑料拥有种类齐全的热塑性工程塑料组合,可以满足多种汽车领域的先进应用。从塑料加工过程中降低系统成本到实现替换金属以提高生产力,帝斯曼向汽车工业提供工程塑料指导,为汽车产品创造更多价值。     

ABS塑料合金在机械设计中的应用

通过对ABS工程塑料的剖析,提出了ABS工程塑料通过与其它工程塑料共混、采用多元共聚、改善材料性能的途径,使ABS塑料合金兼有多种优良性能,增加品种,以满足各种不同使用性能的需要.     

2020年全球工程塑料市场将近900亿美元

近几年来，工程塑料的市场需求增长率一直高于标准型塑料。因其物理和化学性能优势，目前诸多工业、电子电气部件及日用品均由工程塑料制成。未来，这一趋势将继续增强。据市场调查研究机构ceresana预计，至2020年，     

塑料电镀

随着国民经济的发展,对塑料制品的应用提出了越来越新的要求。但是塑料本身具有不导热、不导电、静电现象严重、受潮易变形和缺乏金属光泽等缺点,使之大量应用工程塑料遇到的一些困难。塑料电镀是当前扩大工程塑料应用范围的一项有效措施。塑料制品经电镀后,不仅使塑料制品具有各种色彩的金属光泽,而且也可以改善其物理化学性能。如增加了表面硬度,提     

轿车车门铰链自动装配线的方案设计

作为汽车安全领域的重要部件,车门铰链的自动化装配对于保证它们性能的一致性、提高生产率和降低成本有重要的意义.自动线工艺方案的制定应以手工工艺路线为基础进行修改.从自动装配要求出发,对铰链提出结构工艺性要求及附加质量要求.主要运动:两点运动采用气缸实现,多点运动采用伺服电机实现.信号处理采用传感器及工控机实现.生产节拍以时间消耗最长的工位计算出来.     

某乘用车备胎仓轻量化设计研究

以某乘用车备胎仓为分析对象,基于三维CAD软件对该备胎仓进行轻量化设计,主要包括对备胎仓进行拓扑优化及材料替换。接着采用有限元分析软件Hypermesh对两种轻量化方案的备胎仓进行有限元静力分析。在保证原有强度及刚度的前提下,通过拓扑优化后的备胎仓质量减轻了6.6%,通过材料替换后的备胎仓质量减轻了55.7%。通过综合对比,采取材料替换的轻量化设计方法综合性能优于拓扑优化。将替换材料后的备胎仓进行装车路试,进一步验证了有限元分析结果的准确性。实现了备胎仓的轻量化设计,为后续的备胎仓轻量化设计提供了新的设计思路。     

陶瓷电主轴空载电磁振动试验的研究

近年来,对高速高刚度数控机床用电主轴的需求日益紧迫。采用陶瓷材料设计电主轴主要旋转部件可以提高电主轴极限转速及刚度。但由于陶瓷材料导热、导磁及导电及机械性能与金属材料差别较大,因此陶瓷电主轴电磁振动与金属电主轴有所不同。研究陶瓷电主轴电磁振动有利于实现电主轴的低噪声低振动优化设计。本文通过实验研究了陶瓷电主轴的电磁振动特性。     

高速轴承保持架用聚醚醚酮复合材料性能及应用

介绍聚醚醚酮的化学结构及材料性能,与其他工程塑料的性能对比,及其在国内外轴承领域的应用情况.     

航空发动机部件激光冲击强化研究进展与展望

航空发动机部件服役环境恶劣、工作载荷复杂,容易发生高周疲劳断裂,严重影响发动机安全可靠性.激光冲击强化是一种新兴的表面塑性强化技术,可通过残余压应力预制和微观组织改善显著提升金属材料高周疲劳性能,已在航空发动机部件生产和修理中实现了批量化应用.将深入讨论风扇/压气机叶片、涡轮叶片、涡轮盘、机匣、作动筒、导管、齿轮等部件激光冲击强化研究进展和应用情况及有待解决的问题,分析总结近年来航空发动机部件激光冲击强化研究历程及特点,并就未来设备、机理、工艺和应用等方面研究进行展望,希望通过全行业、全技术链的力量创新协同,推动激光冲击强化技术在我国航空发动机部件上的规模化工业应用.     

工程塑料表面金属覆层的激光定域精细去除

结合激光刻蚀手段与数控加工技术,提出了一种基于数控激光铣削的工程塑料表面金属覆层定域精细去除方法。考虑不同位置的零件对加工质量的要求不同,通过激光烧蚀实验结果得到了保证图形边缘质量的精密切边加工工艺并确定了相应的工艺参数。开发了基于实际进给速度自适应调整激光能量的覆层金属定厚度高效去除技术,完成了图形内部余量的去除,解决了机床实际进给速度受动态性能限制无法达到预设值而导致的目标材料过烧蚀问题。最后,以典型零件复合式三维信号发送/接收器为例,通过对工件图形分区域变参数加工验证了所提出的方法的可行性。实验结果表明:采用基于数控激光铣削的金属覆层定域精细去除技术能够完成典型样件的精密加工,加工的三维金属图形衔接精准,边缘光顺整齐,热影响区范围小,能够满足该类零件高质高效的制造要求。     

Influence of electrical discharge machining parameters on cutting parameters of carbon fiber-reinforced plastic

Today the use of high-strength carbon fiber-reinforced plastics (CFRP) composite as a material for many engineering applications is showing an increasing demand in the industry. These composites are replacing the traditional use of steel because they offer many advantages such as very light weight, high strength, and high stiffness associated with good corrosion-resistant properties. Unfortunately, there is little technological knowledge on the electrical discharge machining (EDM) process of high-strength composite materials, especially about the CFRP. In this work, a study has made into the possibility of using EDM process as a means of machining CFRP composite. Various cutting conditions such as peak current, pulse-on time, pulse-off time and open-circuit voltage were selected to perform electrical discharge machining. The effect of electrode rotation was also studied. Optimum cutting conditions and machine settings for EDM were chosen for machining CFRP composites.     

喷射成形铝硅材料的不含氟镀前处理工艺研究

喷射成形铝硅材料具有良好的热膨胀系数、高热导率及轻质低密度特性,在航空航天领域逐步成为专用电子封装材料.铝硅材料中硅的含量很高,传统电镀前处理工艺中使用含氟的盐或酸,而含氟的盐或酸对人体和环境有较大伤害.镀前处理工艺是决定铝硅材料上镀层结合力好坏的关键.文中提出采用微喷砂方法对铝硅材料基体表面进行处理,替代含氟的镀前处理工艺.通过控制微喷砂的压力和时间、选择一定粒径的玻璃微珠可以得到均匀的表面.比较铝硅材料电镀金后的外观、镀层结合力和低温钎焊性能,最终得出最佳微喷砂工艺参数.     

Effect of the specimen geometry on wear - combination of polyacetal (POM) and carbon steel for machine structures

Engineering plastics which have been shown to have good mechanical properties are now frequently used as materials for various machine elements. Engineering plastics are combined with other engineering plastics and metallic materials for machine construction. These machine elements are fabricated with contact surface forms, such as convex, concave, and plane surfaces. Therefore, when designing machines with a combination of materials containing engineering plastics, it is useful to know the wear and friction characteristics for various contact surface forms. In the present research, polyacetal (POM), an engineering plastic, and carbon steel, a metal often used for machine structures, were chosen as materials to study wear and friction. Wear tests were performed in the combination of a convex surface and a plane, and in the combination of a plane and a plane. As a result, some features of the wear and friction characteristic are clarified. (1) The worn mass when the flat specimen made of POM is rubbed by the POM pin specimen is larger than when with the pin specimen made of carbon steel. (2) When the flat specimen made of POM is rubbed by the POM or the carbon steel pin specimen, the same grade of wear is observed regardless of the pin specimen material. (3) The worn length of the steel spherical pin specimen on the steel flat specimen becomes close to the initial radius of the curvature of the pin specimen when the sliding distance is large. The initial condition of the spherical tip pin specimen on the flat specimen evolves toward a condition of the flat tip pin specimen on the flat specimen. So, the comparison between the two geometries is non-relevant. Such problem did not occur in POM pin specimen.     

Creating internal conductivity in dry biological SEM samples by a simple vapour treatment

Internal sample conductivity in scanning electron microscopy can be a valuable alternative to metal coating. Proton conductivity may be used for this purpose. Many solid materials with active hydrogen atoms, such as hydrogen‐ and ammonium‐salts, organic acids, and even ice, are protonic conductors or semiconductors. Here we present a method to generate proton conductivity in dry biological materials. A simple treatment with hydrogen chloride gas or hydrochloric acid vapour for a few minutes provides sufficient conductivity for many samples. After a removal of excess hydrogen chloride vapour with a vacuum desiccator, the objects may be examined in the SEM without metal coating. The use of internally conductive samples extends the range of easy‐to‐perform SEM preparation techniques. It is advantageous for material contrast imaging of uncoated samples, and it can be used in combination with metal coating to enhance conductivity on difficult samples with complex overlapping surfaces, where simple metal coating does not reliably eliminate charging problems.     

玻璃钢材料在便携式安检设备中的应用及展望

论文综合评述了玻璃钢材料的性能特点,采用玻璃钢材料代替传统金属材料,采用传统的手糊成型工艺方法制作了线扫描平板便携式安检设备的机箱。实际应用表明,玻璃钢材料质量更轻、强度更高,使用寿命更长,可设计性更强,加工工艺性较好,能完全满足便携式安检设备的性能需要,采用该材料后设备体积减少约20%、质量减少约50%,提高了产品的市场竞争力。     

The tribology of plastics — an overview

With the widening use of plastics, it has become an urgent task to study their behaviour in friction systems. The present paper reviews the applications of plastics during the past decades and their function in friction systems. The paper analyses the basic differences between metals and plastics in structure and properties, and points out the limitations, or inapplicability, of using metal tribology to solve problems in plastic friction systems when even different kinds of high-molecular materials have different shapes and applications. The paper also looks at the variety of plastic surfaces, and briefly presents the mechanism, theory, and calculation of the fiction, wear, and lubrication of plastics; theories of plastic wear are summarised. Also presented are the technical functions, simple application techniques, and economic benefits of plastic friction systems.     

神经网络在注塑材料选择系统中的应用

分析了注塑制品的功能要求与注塑材料性质之间关系，提出了一种基于人工神经网络的注塑制品材料选择系统。该系统具有可扩展性，新材料可以方便地添加到选材系统中。     

军用电子设备的涂装体系概论

本文根据军用电子设备的实际使用环境条件 ,探讨了不同的基体金属表面、不同的零部件的涂装体系的构成及防护性能 ,电子设备的基本油漆涂层和终饰油漆涂层系统及选用原则 ,简要介绍了地面、舰船、机载电子设备的涂装体系。     

Manufacturing of multi-functional micro parts by two-component metal injection moulding

Several metals and alloys can be used to enhance the mechanical and physical properties of micro parts and components for micromechanical, micro-chemical or sensor applications. Such parts can be produced in series by the powder metallurgical process of micro metal injection moulding (μ-MIM). This paper describes a novel manufacturing route for metallic multi-material micro components, two-component micro metal injection moulding (2C-μ-MIM). Similar to “two-colour” injection moulding of plastics, the process allows the integration of multiple functions in a micro part by simultaneously injecting and joining two materials in one mould. Net-shape parts with solid material interfaces are obtained. In this paper, the 2C-μ-MIM process is exemplified for the combination of a non-magnetic and a ferromagnetic stainless steel (316 L and 17-4PH). It is shown that intact material interfaces of less than 500×500 μm² can be achieved by careful selection and tailoring of metal powders, injection moulding and co-sintering parameters.