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Introduction
Published in Zainul Huda, Metallurgy for Physicists and Engineers, 2020
Surface Engineering. Surface engineering, also called surface finishing/coating, aims at achieving excellent surface finish and/or characteristics by use of either finish grinding operations or by plating and surface coatings to finish part surfaces. Applied as thin films, these surface coatings ensure corrosion resistance, wear resistance, durability, and/or decoration to part surfaces. The most common plating and surface coating technologies in use include: (a) painting, (b) electroplating, (c) electroless plating, (d) conversion coating, (e) hot dipping, and (f) porcelain enameling. Surface engineering is discussed in detail in Chapter 16.
Application Topics
Published in Q. Jane Wang, Dong Zhu, Interfacial Mechanics, 2019
Surface topography and texture design is an important part of surface engineering. Creating surfaces with controlled micro geometry may be an effective way leading to improved performance and reliability of tribological interface systems. Commonly used surface finishing processes, such as turning, milling, shaving, grounding, honing, polishing, and dimpling, generate surfaces with specific topography and textures. Figure 2.4 presents eight examples of finished surfaces, in which a few commonly used statistical parameters, including Ra, Rq, and Rt, are given for each surface. Refer to Section 2.2.2 for the definitions of these parameters.
Abrasive Applications of Diamond
Published in Mark A. Prelas, Galina Popovici, Louis K. Bigelow, Handbook of Industrial Diamonds and Diamond Films, 2018
K. Subramanian, V. R. Shanbhag
Fine surface finishing processes such as lapping, honing, and polishing also use fine-grit diamond abrasives in loose abrasive form, such as powders, compounds and slurries. Constant effort is being made by researchers to improve productivity, surface quality or both. As these results come into use, new abrasive finishing processes are established. These emerging technologies are shown in Figure 13.
A review on the state-of-the-art of surface finishing processes and related ISO/ASTM standards for metal additive manufactured components
Published in Virtual and Physical Prototyping, 2021
Jian-Yuan Lee, Arun Prasanth Nagalingam, S. H. Yeo
Surface finishing is a vital post-processing step in manufacturing. Surface finishing is crucial for both external and internal surfaces. Each component is surface finished towards the end of the manufacturing cycle – to enhance the surface integrity. The surface quality affects the fits and tolerances during assembly, flow characteristics during fluid transportation, and structural integrity during load-bearing applications. Surface finishing is usually achieved through controlled material removal, inducing plastic deformation, or deposition of new material on the existing surface. This review focuses only on plastic deformation and material removal approaches – as most PBF components require only either deformation or material removal.
Analysis of particles in magnetorheological polishing fluid for finishing of ferromagnetic cylindrical workpiece
Published in Particulate Science and Technology, 2018
Vishwas Grover, Anant Kumar Singh
In present days, surface finishing is most required and exorbitant process in industry (Zhong 2008). For achieving surface finishing, various traditional processes have been developed. But these traditional processes used for surface finishing require a lot of time and labor (Bedi and Singh 2016). Due to the rigid tools, these processes may cause destruction to the workpiece surface during the finishing operation (Hoshino et al. 2001). These processes are not capable to superfinish the workpiece surface without any defect (Lawrence and Ramamoorthy 2011). Moreover, the traditional finishing processes are not much specific for workpiece material used because of less control over finishing forces (Shaw 1996). Traditional finishing processes such as lapping, honing, grinding, etc. are generally used for surface finishing in industries. A lot of heat gets generated during grinding process which may cause thermal stresses or microstructural defects to the workpiece surface. Due to the limitations of these traditional finishing processes, various magnetorheological (MR) fluid-based finishing processes have been developed. These MR fluid-based finishing processes have precise control over the finishing forces and are used for fine finishing of workpiece surfaces. There are many developed MR fluid-based processes for nanofinishing of workpiece surfaces like ball-end MR finishing process (Singh, Jha, and Pandey 2011), chemo-mechanical MR finishing process (Jain et al. 2010), MR abrasive flow finishing process (Jha and Jain 2004), etc. Comparison has also been performed between the results obtained from monodisperse and bi-disperse MR polishing fluid in ball end MR finishing process (Niranjan and Jha 2014) for mild steel. Day by day, several advancements are also being incorporated in MR finishing processes to improve the percentage reduction in surface roughness and surface quality (Niranjan and Jha 2015). Due to magnetic field, the carbonyl iron (CI) particles present in MR polishing fluid align to form chains in direction of magnetic field lines and grip the nonmagnetic abrasives onto the workpiece surface. CI particles present in MR polishing fluid are acted by magnetic normal force due to the magnetic field. Intensity of magnetic normal force acting on CI particles depends on the gradient of magnetic field in the working gap. CI particles exert repulsive force on nonmagnetic silicon carbide (SiC) abrasive particles and make them to indent into the workpiece surface. Due to relative motion between tool and workpiece surface, gripped indented SiC particles also move and remove the peaks of roughness from the workpiece surface. Therefore, it is very important to understand the distribution of magnetic flux density and magnitude of indentation force acting on an active SiC abrasive particle to study the in-depth mechanism of material removal in MR fluid-based finishing processes. Indentation force analysis for various MR finishing processes such as MR abrasive flow finishing (Jha and Jain 2006), MR abrasive honing (Sadiq and Shunmugam 2009), and rotational abrasive flow finishing (Sankar, Jain, and Ramkumar 2010) has already been studied earlier.