高温超导微纳粒子制备设备研制
发布时间：2018-11-18 14:07
【摘要】：超导材料和纳米材料因其特性和其潜在应用前景引起人们的广泛关注,成为了世界性的研究热点,因此超导材料的粉碎至关重要。振动磨是由电机通过挠性联轴器,带动主轴回转,轴带动轴上偏心块回转,从而产生激振力,利用弹簧使筒体产生振动,从而使筒内物料和磨介相互冲击、碰撞、击碎和粉磨物料。振动磨工作筒高频振动造成工作介质对物料的冲击速度快、且工作介质多而使得冲击频率高,可实现物料的微米纳米级粉碎;由于其可通过调节控制振动的频率、振幅、介质尺寸等参数来控制工艺工程,从而可实现对物料粉碎粒度的调节与控制;其结构相对简单,便于实现微小型化。本论文首先利用粉碎理论计算出铋系铜氧化物高温超导材料粉碎到微米级粒度所需的振动强度,振幅和所需电机转速,并对振动磨进行振动分析,得出所需的偏心距,以及隔振设计计算出弹簧的具体参数,从而完成振动磨的整体设计。其次利用Solidworks软件对振动磨零件进行三维实体建模,生成参数化的零部件并进行装配;对振动磨进行运动仿真,得出振动磨的振幅、研磨球运动轨迹等性能参数,初步检验设计的合理性;同时对关键零件轴的强度进行有限元分析,得到应力分布和危险部位,并确认设计的安全性。最后完成设计、绘制CAD图纸、加工制造实体振动磨各零件,并进行组装调试。经检验合格后,对铋系铜氧化物高温超导材料进行振动粉碎实验,经过粉碎、干燥、筛分后在hirox RH-7700的浩视显微镜中观察粉碎后的物料粒度并与预想值对比分析,并不断地调试振动磨参数重复实验,最终得到比较理想的实验效果满足微米级粒度要求。
[Abstract]:Superconducting materials and nanomaterials have attracted wide attention due to their properties and potential applications, and have become a worldwide research hotspot. Therefore, the comminution of superconducting materials is very important. The vibration mill is driven by the motor through the flexible coupling to drive the spindle to rotate, the shaft to drive the eccentric block on the shaft to rotate, so as to produce the exciting force, and the spring is used to make the cylinder body vibrate, thus making the material in the cylinder and the grinding medium colliding with each other. Crushing and grinding materials. The high frequency vibration of the working cylinder of the vibration mill results in the high impact speed of the working medium on the material and the high impact frequency of the working medium, which can realize the crushing of the material at the micron and nanometer level. Because it can control the process engineering by adjusting the frequency, amplitude and medium size of the vibration control, it can adjust and control the particle size of the material comminuted, and its structure is relatively simple, and it is easy to realize micro-miniaturization. In this paper, the vibration intensity, amplitude and motor speed needed to comminute to micron particle size of bismuth system copper oxide high temperature superconducting material are calculated by using comminution theory, and vibration analysis of vibration mill is carried out, and the required eccentricity is obtained. And the vibration isolation design calculated the specific parameters of the spring, so as to complete the overall design of the vibration mill. Secondly, Solidworks software is used to build 3D solid model of vibration grinding parts, to generate parameterized parts and assemble them. The motion simulation of the vibration mill is carried out, the amplitude of the vibration mill and the motion track of the ball are obtained, and the rationality of the design is preliminarily verified. At the same time, the strength of the key parts shaft is analyzed by finite element method, the stress distribution and dangerous position are obtained, and the safety of the design is confirmed. The final design, drawing CAD drawings, machining and manufacturing entities vibration grinding parts, and assembly debugging. After passing the test, the vibration comminution experiment of bismuth based copper oxide high temperature superconducting material was carried out. After grinding, drying and screening, the particle size of the comminuted material was observed and compared with the expected value in the hirox RH-7700 microscope. Repeated experiments of vibration mill parameters were carried out and the satisfactory experimental results were obtained to meet the requirement of micron particle size.
【学位授予单位】：辽宁科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB383.1;TM26
本文编号：2340248
[Abstract]:Superconducting materials and nanomaterials have attracted wide attention due to their properties and potential applications, and have become a worldwide research hotspot. Therefore, the comminution of superconducting materials is very important. The vibration mill is driven by the motor through the flexible coupling to drive the spindle to rotate, the shaft to drive the eccentric block on the shaft to rotate, so as to produce the exciting force, and the spring is used to make the cylinder body vibrate, thus making the material in the cylinder and the grinding medium colliding with each other. Crushing and grinding materials. The high frequency vibration of the working cylinder of the vibration mill results in the high impact speed of the working medium on the material and the high impact frequency of the working medium, which can realize the crushing of the material at the micron and nanometer level. Because it can control the process engineering by adjusting the frequency, amplitude and medium size of the vibration control, it can adjust and control the particle size of the material comminuted, and its structure is relatively simple, and it is easy to realize micro-miniaturization. In this paper, the vibration intensity, amplitude and motor speed needed to comminute to micron particle size of bismuth system copper oxide high temperature superconducting material are calculated by using comminution theory, and vibration analysis of vibration mill is carried out, and the required eccentricity is obtained. And the vibration isolation design calculated the specific parameters of the spring, so as to complete the overall design of the vibration mill. Secondly, Solidworks software is used to build 3D solid model of vibration grinding parts, to generate parameterized parts and assemble them. The motion simulation of the vibration mill is carried out, the amplitude of the vibration mill and the motion track of the ball are obtained, and the rationality of the design is preliminarily verified. At the same time, the strength of the key parts shaft is analyzed by finite element method, the stress distribution and dangerous position are obtained, and the safety of the design is confirmed. The final design, drawing CAD drawings, machining and manufacturing entities vibration grinding parts, and assembly debugging. After passing the test, the vibration comminution experiment of bismuth based copper oxide high temperature superconducting material was carried out. After grinding, drying and screening, the particle size of the comminuted material was observed and compared with the expected value in the hirox RH-7700 microscope. Repeated experiments of vibration mill parameters were carried out and the satisfactory experimental results were obtained to meet the requirement of micron particle size.
【学位授予单位】：辽宁科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB383.1;TM26
【参考文献】
相关期刊论文 前1条
1 刘政,吴照胜;振动磨机介质的运动规律及工作参数的算法[J];矿业工程;2005年05期
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