高压气瓶收口塑性成形数值模拟与缺陷预测
发布时间：2019-02-09 14:09
【摘要】：本课题源于上海市某气瓶厂基于钢制气瓶和铝制气瓶的产品质量改进项目。 高压气瓶作为安全生产的重要组成设备,属于特种设备范畴,作为典型的储运设备,在国民经济中起到了越来越重要的作用。由于气瓶本身主要用来储存高压气体,所以生产气瓶过程中对气瓶质量的控制要求极为严格。这就要求气瓶成形过程要严格控制,保证科学性和统一性,同时也对检测设备提出了更高的要求。高压气瓶成形主要有两种方法,即挤压成形和旋压成形,这两种方法都是无切削成形,性能优于焊接气瓶。旋压成形和拉伸挤压成形占据了国内气瓶成形90%的份额,本文对两种加工气瓶的成形加工方法进行了探讨,所以对气瓶塑性成形研究具有普遍意义。 根据高压气瓶要求安全性高,成形复杂的特点,本文以在工厂实践的基础上,仔细观察气瓶生产过程,对核心工艺进行研究,分析了影响气瓶成形的主要参数。旋压成形主要参数包括旋轮轮廓,旋压温度,主轴转速,旋压进给速度,旋压道次等；拉伸挤压成型主要参数包括缩口系数,加热温度,润滑摩擦系数,挤压速度等。通过对气瓶成形特点的分析研究,初步分析了造成成形缺陷的关键因素。利用有限元数值模拟技术,对实际生产过程进行必要的简化,建立了旋压气瓶和拉伸挤压气瓶的有限元模型,利用有限元模拟分析软件Abaqus进行了旋压成形模拟,用Deform软件进行了挤压拉伸模拟,分析了成形机理和成形过程中的受力情况,提出了各参数对成形缺陷的影响,为实际生产气瓶正常成形、预防成形缺陷提出了理论支持。 对于已经成形的气瓶,缺陷检测非常重要,水压试验正是为了确保气瓶质量而设计的检测方法,并且被国家确定为气瓶出厂检测必备设备。本课题组自行设计的水压试验设备,属于国内领先的技术,可以准确检测内表面褶皱缺陷气瓶,对气瓶内部裂纹,堆叠,气孔等缺陷也可以很好的检测。
[Abstract]:This paper is based on the product quality improvement project of a gas cylinder factory in Shanghai based on steel cylinder and aluminum cylinder. As an important component equipment of safe production, high pressure gas cylinder belongs to the special equipment category. As a typical storage and transportation equipment, it plays a more and more important role in the national economy. Because the cylinder itself is mainly used to store high pressure gas, the quality control of gas cylinder is very strict. This requires the cylinder forming process to be strictly controlled, to ensure scientific and unified, but also to put forward higher requirements for testing equipment. There are two main forming methods for high pressure gas cylinder, namely, extrusion forming and spinning forming. These two methods are non-cutting forming, and the performance is better than that of welding gas cylinder. Spinning forming and drawing extrusion forming account for 90% of the domestic gas cylinder forming. In this paper, two kinds of forming methods are discussed, so it is of general significance to study the plastic forming of gas cylinder. According to the characteristics of high pressure gas cylinder which requires high safety and complex forming, based on the factory practice, the production process of gas cylinder is observed carefully, the core process is studied, and the main parameters affecting the forming of gas cylinder are analyzed. The main parameters include the profile of spinning wheel, spinning temperature, spindle speed, spinning feed speed, spinning channel, etc. The main parameters of drawing extrusion include shrinkage coefficient, heating temperature, lubricating friction coefficient, extrusion speed and so on. By analyzing the forming characteristics of gas cylinder, the key factors of forming defects are analyzed. The finite element simulation technology is used to simplify the actual production process, and the finite element models of spinning gas cylinder and tensile extruding gas cylinder are established, and the spinning forming simulation is carried out by using the finite element simulation software Abaqus. The extrusion and drawing simulation was carried out with Deform software. The forming mechanism and the stress during the forming process were analyzed. The influence of various parameters on the forming defects was put forward. The theoretical support was put forward for the actual production of gas cylinders in normal forming and the prevention of forming defects. For the gas cylinders that have been formed, the defect detection is very important. The water pressure test is designed to ensure the quality of the gas cylinders, and is determined by the state as the necessary equipment for the inspection of gas cylinders out of the factory. The water pressure test equipment designed by our team belongs to the leading technology in our country. It can accurately detect the inner surface wrinkle defect gas cylinder, and also can detect the gas cylinder internal crack, stacking, porosity and so on.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH49
本文编号：2419034
[Abstract]:This paper is based on the product quality improvement project of a gas cylinder factory in Shanghai based on steel cylinder and aluminum cylinder. As an important component equipment of safe production, high pressure gas cylinder belongs to the special equipment category. As a typical storage and transportation equipment, it plays a more and more important role in the national economy. Because the cylinder itself is mainly used to store high pressure gas, the quality control of gas cylinder is very strict. This requires the cylinder forming process to be strictly controlled, to ensure scientific and unified, but also to put forward higher requirements for testing equipment. There are two main forming methods for high pressure gas cylinder, namely, extrusion forming and spinning forming. These two methods are non-cutting forming, and the performance is better than that of welding gas cylinder. Spinning forming and drawing extrusion forming account for 90% of the domestic gas cylinder forming. In this paper, two kinds of forming methods are discussed, so it is of general significance to study the plastic forming of gas cylinder. According to the characteristics of high pressure gas cylinder which requires high safety and complex forming, based on the factory practice, the production process of gas cylinder is observed carefully, the core process is studied, and the main parameters affecting the forming of gas cylinder are analyzed. The main parameters include the profile of spinning wheel, spinning temperature, spindle speed, spinning feed speed, spinning channel, etc. The main parameters of drawing extrusion include shrinkage coefficient, heating temperature, lubricating friction coefficient, extrusion speed and so on. By analyzing the forming characteristics of gas cylinder, the key factors of forming defects are analyzed. The finite element simulation technology is used to simplify the actual production process, and the finite element models of spinning gas cylinder and tensile extruding gas cylinder are established, and the spinning forming simulation is carried out by using the finite element simulation software Abaqus. The extrusion and drawing simulation was carried out with Deform software. The forming mechanism and the stress during the forming process were analyzed. The influence of various parameters on the forming defects was put forward. The theoretical support was put forward for the actual production of gas cylinders in normal forming and the prevention of forming defects. For the gas cylinders that have been formed, the defect detection is very important. The water pressure test is designed to ensure the quality of the gas cylinders, and is determined by the state as the necessary equipment for the inspection of gas cylinders out of the factory. The water pressure test equipment designed by our team belongs to the leading technology in our country. It can accurately detect the inner surface wrinkle defect gas cylinder, and also can detect the gas cylinder internal crack, stacking, porosity and so on.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH49
【引证文献】
相关硕士学位论文 前1条
1 甘平燕;带缺陷的CNG-2气瓶安全评估与分析[D];华南理工大学;2013年
，本文编号：2419034
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