The paper initially reviews research relating to ultrasonic (US) assisted grinding of various workpiece materials. Results from experimental trials to evaluate the influence of applying US vibration when creep feed grinding Inconel 718 with an open structured, alumina based grinding wheel (POROS 2) are then presented.
The ultrasonic grinding experiment of the ZrO2 ceramic ball valves was carried out. The results showed that ultrasonic grinding reduced the maximum height difference of the workpiece surface, reduced by 28% compared with conventional grinding (CG). The surface roughness was reduced to meet the actual processing requirements.
IET Electric Power Applications is a fully open access journal covering influential research on a wide range of applications and apparatus in the power field. ... vibration and heat. However, in rotary ultrasonic grinding, the varieties of temperature and mechanical load will greatly impact the transmission performance of the contactless …
We specialize in custom applications of Ultrasonic machining as a solution for hard, brittle, and specialty materials. How Ultrasonic Machining Works. In simple terms, UM combines two main elements: A tool of the desired end shape, and; A high-power sine wave generator + transducer induces the necessary ultrasonic frequency, 15-30 kHz.
Ultrasonic-assisted grinding, a promising processing technique for machining hard and brittle materials, is already quite extensively employed in manufacturing industries. However, the material removal mechanism in ultrasonic-assisted grinding is not yet fully understood, which hinders its further application. This study investigates …
Gamma titanium-aluminum intermetallic compounds (γ-TiAl) have an important application significance in the field of aero-engines owing to their excellent mechanical properties (e.g., high-temperature resistance and high toughness). Grinding as an important method was used to realize the high efficiency and precise machining for …
Longitudinal-torsional composite ultrasonic vibration has been widely used in grinding. This paper aims to solve the problem that the resonance frequency deviates greatly from the theoretical design frequency and the vibration mode is poor when the horn is matched with a larger tool head. This paper presents how the longitudinal-torsional …
The following Ultrasonic Machining applications are: Ultrasonic Machining is used for the Machining of non-conductive ceramics. Material that has a high scrap rate means fragile material can be machined by this process very effectively. Machining of dies for wire drawing, punching, and blanking operations.
This study used a forming grinding wheel to machine an involute spur gear with ultrasonic vibration applied to the gear in order to improve the gear processing technology and enhance the gear processing effect. Conventional grinding and ultrasonic vibration-assisted forming grinding gear (TUVA-FGG) tests were carried out. The …
The Ti6Al4V alloy has been widely used in aerospace equipment and medical devices. However, the poor wear resistance of the Ti6Al4V alloy hinders its further engineering application. In this study, the ultrasonic strengthening grinding process (USGP) and laser texturing process were employed to enhance the wear resistance of …
DOI: 10.1016/0020-7357(68)90004-8 Corpus ID: 109399680; Application of ultrasonic technique in grinding processes @article{Kaliszer1968ApplicationOU, title={Application of ultrasonic technique in grinding processes}, author={H. Kaliszer and M. E. Limb}, journal={International Journal of Machine Tool Design and Research}, year={1968}, …
Application of horizontal ultrasonic vibration in dry grinding shows 37% normal force and 21% in tangential force reduction. When nanofluid is added, the grinding forces were reduced by up to 61% in normal grinding force and up to 58% in tangential forces for concentration paraffin-based nanofluid.
Ultrasonic-assisted grinding (UAG) is a hybrid machining method and is generally considered as an effective machining solution for hard and brittle materials. ... The results demonstrated that the application of ultrasonic vibration was beneficial to improve the material removal rate and to increase the critical depth of brittle-to-ductile ...
The mechanism of ultrasonic dispersers for milling, grinding, deagglomeration and dispersion applications is mainly based on the shear principle generated by ultrasonic cavitation. The cavitational shear …
This paper deals with the development of an extremely high frequency ultrasonic transducer of magnetostrictive type with vibration frequency of up to 400kHz, and its application to ultrasonic grinding. This transducer provides longitudinal, torsional and complex modes of vibration. The application of this transducer to grinding or …
Below, you will learn all about typical ultrasonic applications and processes. ... Ultrasonic Wet-Milling and Grinding. Ultrasonication is an efficient means for the wet-milling and micro-grinding of particles. In particular for the manufacturing of superfine-size slurries, ultrasound has many advantages. ...
A possible strategy to increase the engagement of contacting grains in the grinding zone is to impose a high frequency (>16 kHz) and low amplitude (2–30 μm) …
Ceramics are finding widespread application in the fabrication of several components for engineering applications, because of the low cost of the raw material and the attractive properties associated with them. This paper investigates the application of rotary ultrasonic grinding for grinding of ceramic substrates (canasite) for computer hard ...
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 manufacturing of superfine-size slurries, ultrasound has many advantages, when compared with common size reduction …
Different from side grinding, the application of ultrasonic vibration reduces the F n in all parameters of V f to a similar extent. However, the application of ultrasonic vibration does not reduce the F t. Moreover, when the V f is 65 mm/min, the values of F n and F t are the greatest which are 2.48 N and 1.62 N.
Additionally, the introduction of ultrasonic vibrations with the SiO2 nanofluid in MQL system was found to reduce the specific grinding energy, normal grinding forces, tangential grinding forces, and surface roughness by 65%, 57%, 65%, and 18% respectively. Finally, regression analysis was used to obtain an optimum parameter …
A Micro Ultrasonic Grinding Device with Very High Frequency and its Application p.45. Computer Simulations of Cylindrical Plunge Grinding - Influence of Work Stiffness on Grinding Accuracy - p.51. Study on the Formation of …
In order to improve the machinability and application of SiCp/Al composites, the rotary ultrasonic face grinding experiments of SiCp/Al composites reinforced with 45% volume SiC particles were carried out to investigate cutting force, surface quality, tool wear, and abrasive chip shapes.
In order to improve the machining process of advanced ceramics grinding can be combined with ultrasonic vibrations at high frequencies of about 22 kHz and low amplitudes between 4 and 15 μm. This report is dealing with investigations on ultrasonic assisted creep feed grinding of sintered silicon nitride and alumina. ... applications for ...
Madarkar et al. (2018) concluded that combined application of Ultrasonic Assisted Grinding (UAG) and MQL with vegetable oil reduces the cutting forces up to 38% in the tangential direction and 32% ...
Application of the UVAG on other micro-structured surfaces. The grinding of a micro V-grooves array and a micro pyramid array (with 120° V-shape) on binderless WC and SiC ceramic was conducted with the V-shaped diamond wheel using the developed UVAG. The adopted grinding parameters have been investigated and selected in …
The term ultrasonic is used to describe a vibratory wave of the frequency, that is above the upper-frequency limit of the human ear, i.e. above 16 kHz.. The device for converting any type of energy into ultrasonic waves is the ultrasonic transducer.. This electrical energy is converted into mechanical vibrations.
Since glass and ceramic materials have beneficial properties, they have gained more importance in numerous technical applications during the last 30 years. For example, nowadays, ceramics are used as artificial hip joints or as mechanical seals for highest relative speeds. Glass components are used for multitude of optical …
In 1964, the British scholar Legge proposed an ultrasonic machining method without abrasive slurry, which combined traditional ultrasonic machining with grinding machining; this method proved efficient and improved the material removal rate over traditional ultrasonic machining, 3 as shown in Figure 1.When the cutting tool for …
پست الکترونیک: [email protected]
نشانی: شماره 1688، جاده شرقی گاوک، منطقه جدید پودونگ، شانگهای، چین.
کپی رایت © 2024.cryptod تمامی حقوق محفوظ است.نقشه سایت
