Jun Cheng, Zhaozhi Guo, Chuang Zhang, Jingyu Li, Kefeng Song
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引用次数: 0
Abstract
Ultra-precision machining technology received relatively little attention in the machining of key components for semiconductor equipment, such as the seal surfaces of mass flow controller (MFC). The machining quality of these features is vital to the corrosion resistance of MFC valve body. Currently, the processing of these features still relies on conventional manual polishing, which will lead to uncertainty in surface quality. Therefore, this article employs a special fabricated sinter pouring polyurethane (SPPU) grind-polishing tool to conduct two-dimensional ultrasonic vibration-assisted polishing experiments, with a focus on the tool's performance. The machining mechanism of the tool was analyzed. Taking into account the ultrasonic cavitation effect, the penetration depth of a single grain was calculated, and established a surface roughness model. Through experiments, it was found that as the amplitude increased, the surface roughness showed a decreasing trend, reaching as low as 0.003 μm, but the change in polishing force exhibited an opposite trend. Additionally, the material removal efficiency significantly improves with the increase of amplitude. The processed surface had a reduced carbon content and no oxygen element, indicating the stable machining performance of the tool. This article provides effective reference for the automated processing of MFC valve body features.
期刊介绍:
The word ‘particuology’ was coined to parallel the discipline for the science and technology of particles.
Particuology is an interdisciplinary journal that publishes frontier research articles and critical reviews on the discovery, formulation and engineering of particulate materials, processes and systems. It especially welcomes contributions utilising advanced theoretical, modelling and measurement methods to enable the discovery and creation of new particulate materials, and the manufacturing of functional particulate-based products, such as sensors.
Papers are handled by Thematic Editors who oversee contributions from specific subject fields. These fields are classified into: Particle Synthesis and Modification; Particle Characterization and Measurement; Granular Systems and Bulk Solids Technology; Fluidization and Particle-Fluid Systems; Aerosols; and Applications of Particle Technology.
Key topics concerning the creation and processing of particulates include:
-Modelling and simulation of particle formation, collective behaviour of particles and systems for particle production over a broad spectrum of length scales
-Mining of experimental data for particle synthesis and surface properties to facilitate the creation of new materials and processes
-Particle design and preparation including controlled response and sensing functionalities in formation, delivery systems and biological systems, etc.
-Experimental and computational methods for visualization and analysis of particulate system.
These topics are broadly relevant to the production of materials, pharmaceuticals and food, and to the conversion of energy resources to fuels and protection of the environment.