【作者】 沈洋；

【导师】 邢英杰；

【作者基本信息】 大连理工大学 ， 机械设计及理论， 2010， 硕士

【摘要】 等离子体清洗作为一种新兴清洗技术,在满足金属零件清洗的需要,代表清洗技术高效、无污染、低能耗等发展趋势的同时,又具有自身的特点和优势,从而越来越受到国内外学者的高度重视。等离子体清洗是一种利用等离子弧能量将表面的污垢去除的绿色清洗方法。橡胶模具是橡胶硫化过程中所使用的重要工具,它的优劣直接影响橡胶制品外在质量甚至使用寿命及安全性。为了保证橡胶制品的外观质量,必须对结垢的模具定期清洗。因此等离子体清洗技术可望在模具行业中发挥重要作用。本文介绍了等离子体清洗技术的国内外发展现状,等离子体清洗模具的原理,将等离子体清洗方法与传统清洗方法和其它清洗方法进行比较。针对模具表面污染物种类以及分布方式的不同,针对橡胶模具表面污染物种类以及分布方式的不同,分别对其进行有限元热-应力耦合分析,利用ANSYS有限元软件模拟了等离子体清洗橡胶模具Q235表面的温度场和应力场,建立了等离子体与橡胶模具间的三维热力耦合模型,并计算了模具表面清洗力,清洗应变和表面温度。通过分析,得到了工艺参量对表面温度、清洗力、清洗应变的影响规律,为等离子体清洗橡胶模具实验参数的合理选择提供了理论依据。分别对模具表面的斑状颗粒和层状致密污染物的等离子体清洗技术进行了研究,通过ANSYS软件模拟结果,分别对斑状颗粒和层状致密污染物基体表面不同节点的界面温度、界面清洗力、清洗应变进行分析,揭示了弧功率、扫描速度、基体厚度、污染物厚度等工艺参量对斑状颗粒污染物的界面温度、界面清洗力、清洗应变的影响规律。对等离子体清洗橡胶制品模具技术进行了工艺研究。构建等离子体清洗实验装置系统和建立清洗质量的评价方法。通过实验,测量得到的清洗效果与通过界面清洗力、界面温度有限元分析得到的清洗效果是基本吻合,验证了本文对斑状颗粒污染物清洗时能量耦合有限元分析的有效性。更多还原

【Abstract】 As a new cleaning technology, plasma cleaning can meet needs of metal parts cleaning and development trend of cleaning technology, such as high-performance, non-polluting, low energy consumption and etc. Furthermore, plasma cleaning technology has attracted increasing attention of domestic and foreign scholars. Plasma cleaning is a new type of industrial cleaning technology, which uses plasma energy to remove the dirt on the mold surface, reaching the purpose of green cleaning. Mould is an important tool in the rubber vulcanization process, it directly influences the superiority of rubber product external quality even service life and security. So in order to guarantee the rubber product outward appearance quality, it is necessary to scaling mould regular cleaning; therefore, plasma arc cleaning technology will play an important role in mould industry. This paper introduces the plasma arc cleaning technology developing situation of domestic and foreign, the principle of plasma arc cleaning mould, compare the plasma cleaning method with traditional cleaning methods and other new cleaning methods.According to substrate surface for the types of pollutants, as well as the characteristics of distribution, energy coupling mechanism of plasma cleaning speckle particle pollutants and layered dense pollutants have been studied respectively. According to rubber mould substrate surface for the types of pollutants, carried on the finite element hot-stress coupling analysis respectively, using the ANSYS finite element software to simulate the temperature field and stress field on the surface of the plasma cleaning rubber mould Q235, established the 3d coupled model between the plasma and rubber mould, And calculate the surface cleaning force, cleaning strain and surface temperatures of rubber mould. Through the analysis, the influence rule of interface temperature, interface cleaning force and cleaning strain has been revealed, for providing theoretical basis on the choice of parameters during the process of plasma cleaning rubber mould.This paper focus on research the process of plasma cleaning rubber mold technology. Construct the plasma cleaning experimental facility system and establish the evaluation methods of cleaning quality. Through experimentation, the cleaning effect Measured by the Experiments to be identical with effect get through the interface clean force, interface temperature finite element analysis.The plasma cleaning speckle particle pollutants and layered dense pollutants in mould have been studied respectively in this paper. Through ANSYS software simulation results, analyses the different nodes’interface temperature, interface cleaning force and cleaning strain on speckle particle pollutants and layered dense pollutants substrate surface respectively. The effect of process parameters such as plasma arc power, scanning speed, substrate thickness and contaminant thickness on the interface temperature, interface cleaning force and cleaning strain has been revealed again. Plasma cleaning technology as a new process method has a good application prospect and potential predominance especially in mould cleaning field.更多还原