滤波连接器用小尺寸高精度陶瓷滤波管芯

发布时间：2018-07-03 11:46

本文选题：滤波连接器 + 管式陶瓷　；参考：《电子科技大学》2014年硕士论文

【摘要】：随着科学技术的发展,滤波连接器得到了越来越广泛的应用。管式陶瓷电容因其优良的电性能和内外电极结构带来的完美的安装方式而被滤波连接器广泛采用,随着滤波连接器应用领域不断拓展,各种应用环境对产品质量要求不断提升,在尺寸精度、瓷件抗环境应力等方面对滤波连接器用管式陶瓷电容提出了更高的要求。同时随着市场需求量的不断增加,现有的生产工艺在生产周期和产能方面已不能满足要求。国内管式陶瓷电容器成型主要采用挤制法,该法生产周期长、产能不高,陶瓷件强度相对偏低,且在产品尺寸精度上存在椭圆、弯曲、斜头等诸多问题。本论文针对上述问题,在分析对比各种陶瓷成型方法的基础上,提出了将干压成型法用于管式陶瓷电容器成型,该法生产周期短、产能高、尺寸精度高、质量一致性好。本课题主要研究管式陶瓷电容器干压成型工艺,主要内容包括:1.研究对比了各种陶瓷成型方式,不同干压成型方式的影响。研究结果认为,与传统的挤制成型法相比,干压模具法成型工艺具有尺寸精度高、坯体强度高、电性能好、生产周期短、效率高、资金投入少等优势。2.研究了陶瓷粉料特性对陶瓷滤波管芯性能的影响。主要包括粉料颗粒形貌与松装密度及流动性的关系、成型压力与生坯密度的关系、成型生坯密度对陶瓷滤波管芯性能的影响等。研究发现颗粒形貌呈小苹果状的粉料具有较大的松装密度,确定了粉料的最佳成型密度在4.14g/cm3左右。3.研究了成型模具对产品的影响。包括成型模具光洁度的影响、模具材料的选择。研究认为模具成型腔的粗糙度对产品的尺寸精度具有较大的影响。
[Abstract]:With the development of science and technology, filter connectors are more and more widely used. Tubular ceramic capacitors are widely used in filter connectors because of their excellent electrical properties and perfect installation mode brought by internal and external electrode structure. With the continuous expansion of the application field of filter connectors, various application environments are constantly improving the product quality requirements. Higher requirements for tubular ceramic capacitors for filter connectors are put forward in terms of dimensional accuracy and environmental stress resistance of porcelain parts. At the same time, with the increasing market demand, the existing production process can not meet the requirements in terms of production cycle and production capacity. Extruding is the main method for forming tubular ceramic capacitors in China. This method has long production cycle, low production capacity, relatively low strength of ceramic parts and many problems in dimensional accuracy of products such as ellipse, bending and skew head. In order to solve the above problems, based on the analysis and comparison of various ceramic forming methods, this paper puts forward the method of dry pressing forming for tubular ceramic capacitors. The method has the advantages of short production period, high productivity, high dimensional precision and good quality consistency. This paper mainly studies the dry compression molding technology of tubular ceramic capacitor, the main content of which includes: 1. The effects of various ceramic molding methods and different dry pressing methods were studied and compared. The results show that compared with the traditional extrusion molding process, the dry pressing molding process has the advantages of high dimensional precision, high strength of the billet, good electrical properties, short production cycle, high efficiency and less investment. The effect of ceramic powder characteristics on the core properties of ceramic filter tube was studied. It mainly includes the relationship between powder particle morphology and loose packing density and fluidity, the relationship between molding pressure and green density, and the influence of forming green density on the properties of ceramic filter tube core. It was found that the powder with a small apple shape had a large loose density, and the optimum forming density of the powder was determined to be about. 3. 4.14g/cm3. The influence of molding die on the product was studied. Including the impact of mold finish, mold material selection. It is considered that the roughness of die cavity has a great influence on the dimensional accuracy of the product.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM503.5

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