Exploration And Analysis Of Ultrasonic Grinding Principle

Ultrafine grinding technology is a advanced technology, which is developed rapidly in recent decades. With society developing, science and technology progressing, ultrafine grinding technology is becoming more and more indispensable in chemical industry, metallurgy, agriculture, medicine, textile, aerospace, military industry, and so on. At the same time, only after fine crushing and super fine crushing, many raw materials can use more effectively. Although ultrafine grinding technology starting late, after years of development, it has shown its unique advantages and broad prospects.Grinding is a process of high energy consumption, high steel consumption and low efficiency. General method mainly have two kinds including mechanical grinding and chemical grinding, mechanical grinding is one of the most widely used in the production and life. Traditional grinding methods mainly have two improvement ways, one is producing special equipment, the other is changing broken material structure. It provides reference opinions for ultrasonic vibration grinding subject introduced to grinding project. Ultrasonic grinding device is mainly composed of transducer, ultrasonic generator and horn. By using the existing ultrasonic generator and transducer, this paper designs appropriate horn, because the quality of horn affects the quality of ultrasonic equipment. But several kinds of traditional horn have their respective advantages and disadvantages, and their design are also difficult at the same time, so if it is needed to get the good horn meeting the application conditions, it requires a new method of design and checking.This paper explores the principle and efficiency of grinding, and analyzes the feasibility of applying ultrasonic vibration to grinding technology. Based on ultrasonic vibration grinding theory, by using finite element analysis software ANSYS, this paper carries out the simulation of horn with larger amplitude amplification ratio, then compares and analyzes the results. So, the horn parameter is optimized, and more in line with the actual application requirements. The main research contents are as follows:(1) First, it summarizes the research situation of crushing technology, then emphasises on the principleof ultrafine comminution technology and the future development trend, at last introduces ultrasonic vibration application and powders the feasibility of the research topic.(2) In the research process of ultrasonic vibration grinding technology, it studys the theory design method of the amplitude and calculates the theoretical parameters of step horn by software.(3) Based on the influence law of parameters for the vibration system, it obtains the parameters of step horn. It conducts the modal analysis by ANSYS software, that it obtains the resonant frequency of the transducer and horn of node displacement, axial vibration, longitudinal vibration and so on. Then it adds transition arc carries on step horn and simulates it, and the optimized results are obtained. It verifies the validity of the modal analysis by comparing these results.(4) This paper studies the influence of resonance frequency for horn in the ultrasonic vibration grinding equipment, and design horn bases on it. But the parameters of horn for increasing the technology of superfine comminution and crushing effect remains to be further research.(5) Basis on the studying of crushing mechanism, it establishes the grinding mathematical model and obtaines the related parameters of the model by experiments. The experimental results show that the ultrasound applied to rigid material crushing is feasible, and can efficiently shatter the materials. These provide some reference for future research.