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Ultrasonic vibration-assisted grinding (UAG) is a non-conventional machining process, in which ultrasonic vibration is imposed on the grinding wheel or workpiece [].The superimposition of ultrasonic vibration can improve the grinding performance and the surface quality such as: reducing surface roughness [] and grinding force [] as well as the grinding …
Ultrasonic vibration assisted micro end grinding (UAMEG) is a promising processing method for micro parts made of hard and brittle materials. First, the influence of ultrasonic assistance on the mechanism of this processing technology is theoretically analyzed. Then, in order to reveal the effects of ultrasonic vibration and grinding parameters on grinding forces and surface quality, …
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The ultrasonic grinding surface of the ceramic plate is discussed in this paper by dividing regionally. Concentrating on how the edge quality affects the surface topography, the white-light interference measuring techniques is used to …
PDF | Ultrasonic vibration assisted grinding (UAG) has proven to lower the forces and improve the ground surface quality while shaping difficult to... | Find, read and cite all the research you ...
Ultrasonic assisted grinding (UAG) is one of the most suitable methods for the processing of hard and brittle materials such as silicon carbide (SiC). During UAG of SiC, the machining quality is directly determined by the material removal mechanism. However, the research on the material removal mechanism for UAG of SiC is still not sufficiently developed. …
The actual vibration amplitude (AVA) during ultrasonic vibration-assisted face grinding (UVAFG) is an essential parameter that affects grinding force and surface quality. However, an effective method for the real-time measurement of AVA during grinding remains unavailable, hindering research on UVAFG.
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Ultrasonic Testing involves utilization of ultrasonic sound waves to detect defects inside a material.The Ultrasonic testing of weld joints. Toggle navigation ... There are many best NDT training institute for NDT certifications, one among them is AQC – Advanced Quality Centre. How to scan a weld Joint ? Initially Select the appropriate probe ...
In this study, ultrasonic assisted internal grinding... | Grinding, Ultrasonics and Ceramics | ResearchGate, the professional network for scientists. FIGURE 11 - uploaded by Jianguo Cao.
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Abstract: The ultrasonic-assisted single-grit grinding device is designed which can be used to efficiently simulate grinding process, and the comparative tests of single-grit ultrasonic grinding are carried out between Nano-ZrO 2 ceramics and ZTA ceramics under different grinding depth. The experimental results show that the bigger the scratch depth was, the greater damage …
Research on the Relation Between Ultrasonic Grinding Frequencies and Surface Quality for Al2O3-ZrO2 Nano-Composite Ceramics MA Hui1,ZHAO Bo2,XIE Ping2 (1.School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China;
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Ultrasonication is an efficient means for the wet-milling and micro-grinding of particles. Besides dispersing and deagglomerating, the wet milling is an important application of Hielscher ultrasonic devices.. In particular for the …
Axial ultrasonic vibration–assisted grinding has been widely proved to be effective on the ground quality as well as efficiency for hard and brittle materials. However, the deference of two typical modes, axial ultrasonic vibration–assisted peripheral grinding (AUPG, vibration directions are parallel to the ground surface) and axial ultrasonic vibration–assisted end …
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where # is grinding force per unit grinding area, which depends on material properties, ( ) is the grinding cross-sectionalarea, and is the coe cient of friction. Grinding cross-sectional area ( ) is proportional to ; that is, ( ) $ . er efore, assisted ultrasonic vibration, which leads to low average value of,istocutdownthe
Ultrasonic-assisted grinding processing can effectively reduce the surface roughness and enhance the processing efficiency in the processing of hard and brittle materials. However, the most common ultrasonic assisted grinding is a type of contact ultrasonic grinding where the grinding tool directly contacts the workpiece, which means that it is necessary to accurately …
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Abstract: The relationship between the ultrasonic grinding surface quality of Al2O3-ZrO2 nano-composite ceramics and the ultrasonic grinding frequencies was researched. Based on the ultrasonic single point scratching test, the change of material removing style illustrates the improvement of surface quality with ultrasonic grinding.
Influence of electrical parameters, ultrasonic amplitude and matching degree between electrolysis and mechanical grinding on the machining quality of small holes are discussed experimentally, which demonstrated that the small holes with the hole diameter of 1.1 ± 0.01 mm, the taper of less than 0.6 degree, the surface roughness of 0.31 μm can ...
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Ultrasonic milling has proven to be an effective technique for improving titanium, aluminum and stainless steel workability.Under the action of ultrasonic milling, it has more advantage than the traditional milling. In contrast to the effect of ultrasonic machining aluminum, steel, stainless steel, titanium four metallic materials.Improved surface quality of the most prominent is the titanium ...
Ultrasonic vibration–assisted grinding (UVAG) shows excellent performance in the machining of difficult-to-cut materials. Grinding force is one of the key factors affecting the quality of the machined surface, which has been investigated both experimentally and theoretically. However, the research on the modeling of the grinding force of the separated ultrasonic …
Hard ceramic optical materials such as sapphire, ALON, Spinel, PCA, or Silicon Carbide can present a significant challenge in manufacturing precision optical components due to their tough mechanical properties. These are also the same mechanical properties that make them desirable materials when used in harsh environments. Slow processing speeds, premature tool wear, …
The tip of the ultrasonic machining tool is called a "sonotrode" which vibrates at amplitudes of 0.05 to 0.125 mm and frequencies around 20 kHz. The vibrations of the tip transmit high velocities to fine abrasive grains between the tool and the surface of the workpiece. The tool never contacts the workpiece and therefore the grinding ...