0086-21-58386256
Bian et al. [ 14] established a non-local constitutive model under one-dimensional ultrasonic vibration and studied the grinding process of nanocomposite ceramics. The results showed that ultrasonic vibration can greatly reduce the grinding force and improve the grinding surface quality.
Ultrasonic batch mixing is a reliable, rapid method for liquid mixing, dispersing and dissolving. ... hydration, homogenization, grinding, dispersion, emulsification and dissolving are common applications for …
Ultrasonic machining is a specialized technology used for machining difficult-to-process materials such as hard brittle materials, composite materials, and challenging metal materials. It has significant …
Owing to their convenient manufacture, transportation, low energy consumption, and environmental impacts, lightweight cement composites have been applied as building and construction materials. However, its decreased density is associated with a reduction in mechanical strength. In most existing investigations, attempts have been made to …
Ultrasonic grinding and dispersing is often the only method to process nano particles efficiently in order to obtain primary particles. A small primary particle size results in a large surface area and correlates with the expression of unique particle …
The experiments were conducted in the traditional grinding (TG) mode and tangential ultrasonic vibration grinding (TUAG) mode. The results show that the unit grinding force in TUAG is lower than that in TG in the same machining condition; the grinding force ratio is decreased due to the tangential ultrasonic vibration of the workpiece.
This study aimed to explore the evolution of surface properties of nanocomposite ceramics during ultrasonic vibration-assisted electrolytic in-process dressing (UVA-ELID) grinding. First, the trajectory of the grain was analyzed, and the motion was simulated using MATLAB to demonstrate the mechanism of UVA-ELID …
Since ultrasonicators provide extraordinarily high, yet precisely controllable shear forces, ultrasound cavitation is the preferred technique for the reliable production of nano-dispersion and nano-emulsions in lab (R&D), pilot, and industrial setups.
Ultrasonic grinding and dispersing is often the only method to process nano particles efficiently in order to obtain primary particles. A small primary particle size results in a large surface area and correlates with the expression of unique particle …
Adopting ultrasonic composite processing we describe the influence of different processing parameters and grain size of diamond wheel on the grinding forces …
Nanostructured abrasive grits manufactured by hybrid fusion processes and by sintering/extrusion/ processes are found to reduce pitting quite significantly. The phenomenon of wheel collapse is increasing and cycle times developed during the grinding of aerospace alloys are much smaller compared to using conventional materials.
Ultrasonic-assisted forming grinding is a composite machining method that combines ultrasonic vibration with traditional grinding [2,3]. Ultrasonic-assisted grinding …
Ultrasonic-assisted machining, as an effective processing method applicable to various materials, can reduce the cutting forces, prolong the tool's service life, enhance the machining accuracy, and improve surface topography, wear resistance, and corrosion resistance [ 6, 7, 8, 9 ].
With the amplitude with loaded, the surface topography and roughness are gained with the axial ultrasonic assisted face grinding metal surface topography and roughness prediction model. Finally, accuracy of the prediction model is verified via axial ultrasonic assisted face grinding experiments.
In addition, under the same grinding parameters, the surface residual stress on two-dimensional ultrasonic vibration grinding is larger than that on ordinary grinding, and if other...
Ultrasonic vibration grinding improves the surface quality and processing efficiency of sapphire machining compared with conventional grinding, but its nano-scale deformation mechanism is still ...
The grinder has a rotational speed up to 4000 r/min. Resin-based diamond grinding wheels with mesh sizes of 1500, 2000 and 4000 were used to grind the (100) plane of YAG wafers whose size are Φ20 mm × 1 mm. The concentration of the grinding wheel is . The diameter and width of the grinding wheel are 125 Conclusions
Ultrasonic-assisted grinding promoted the removal of carbon fibers in nano-scale brittle fractures by reducing the maximum undeformed chip thicknesses, thereby improving the quality of the …
The results indicate that, in the same parameters, ultrasonic normal grinding force is about 65 to 85 percents of the ordinary grinding condition, and the surface quality is better than that...
This paper presents an ultrasonic assisted electrochemical drill-grinding (UAECDG) method in which rotating ultrasonic vibration is employed with ECG for the fabrication of small holes with efficiency and precision. In this paper, an UAECDG experimental set-up is established and a ball-end abrasive electrode is designed as tool …
Conventional grinding beads have an average size between 1,500 mm – 35,000 mm. Another problem is the contamination by wear and tear of the milling medium. ... Mohammad Mohsen Modarres-Gheisari, Roghayeh Gavagsaz-Ghoachani, Massoud Malaki, Pedram Safarpour, Majid Zandi (2019): Ultrasonic nano-emulsification – A review. Ultrasonics ...
Ultrasonic Vibration Assisted Grinding In this paper, the characteristic of grinding force in two-dimensional ultrasonic vibration assisted grinding nano-ceramic was studied by experiment based on indentation fracture mechanics, and mathematical model of grinding force was established.
Zhao B et al. researched ultrasonic assisted elliptical vibration grinding of Nano-ZrO 2 ceramics, and the results showed that the ultrasonic assisted grinding could reduce the surface roughness by …
In this paper, the characteristic of grinding force in two-dimensional ultrasonic vibration assisted grinding nano-ceramic was studied by experiment based on indentation fracture …
Based on nonlocal theory, The effects of ultrasonic frequencies on the grinding force and nonlocal decay rate are obtained through the experimental study of material properties …
Ultrasonic Vibration Grinding Test of Composite Ceramics Based on the Nonlocal Theory Abstract: The effects of ultrasonic frequency on the grinding force and surface quality were analyzed from the grinding experiment on ZTA nano-composite ceramics.
AUAG is a machining method with a large tangential force and a small normal force, which can promote the removal of hard-brittle materials and reduce the …