The use of industrial robots for grinding CFRP is a green processing method. This method not only allows in-situ repair to reduce unnecessary waste of resources, but also produces no excessive contaminants. The effect of various process parameters, including grinding directions, the mesh size of grinding heads and rotating speed, on …
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In this study, effects of the grinding process on the porosity content, residual stress, microhardness, and adhesion and cohesion strength of the high-velocity oxy-fuel WC–10Co–4Cr coatings are investigated. For this purpose, the grinding experiments have been performed on a surface grinder using a diamond wheel (resin …
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1. Introduction. Grinding is a finishing process (Pawlus et al., 2023), which holds a pivotal and widespread position across various domains (Satyanarayana and …
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The quality of a workpiece resulting from a grinding process is strongly influenced by the static and dynamic behavior of the mechanical system, composed by machine tool, wheel, fixture and workpiece.
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In order to explore the influence of the grinding process parameters on the surface roughness and surface layer residual stress of 18CrNiMo7–6 steel, the cylindrical longitudinal grinding experiment was carried out by using an end cylindrical grinder. With using the workpiece speed n w, grinding depth a p and longitudinal feed speed …
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DOI: 10.1016/j.jmapro.2024.01.026 Corpus ID: 267270862; Effect of different grinding strategies on subsequent polishing processes of sapphire @article{Wang2024EffectOD, title={Effect of different grinding strategies on subsequent polishing processes of sapphire}, author={Sheng Wang and Guipeng Tie and Feng Shi and Ye Tian and …
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In the first dry grinding process, 4 g of the materials (PTFE and salt additive mixture) were ground in air. In the second washing step, 2 g of the ground sample was placed in a capped Erlenmeyer flask filled with 300 mL of water/ethane (50/50) solution and stirred for 4 h at room temperature on a magnetic stirring apparatus (524G, Meiyingpu ...
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Conventional cutting fluids are widely employed globally as coolants and lubricants in grinding operations. However, these fluids pose significant environmental and biological risks. To mitigate these adverse effects, a shift towards sustainable machining techniques is imperative. Sustainable approaches involve minimal cutting fluid usage, …
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The excessive residual stresses caused by heat treatment and grinding processes is one of the main challenges for Cam manufacturing, because they will lead to delayed cracks and reduce the fatigue life of Cam. Experimental studies are one of the essential ways to keep residual stresses at a reasonable value. Thus, orthogonal and …
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1. Introduction. Hard and brittle materials are widely used in aerospace, semiconductor, modern defense and other fields due to their high strength, high …
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The second part presents the effects of grinding processes and conditions on enzymatic hydrolysis kinetics; and third, their effects on the hydrolysis extent. The fourth part concerns the measurements on crystallinity to help understanding the previously presented results. Finally, the discussion section expresses the general effects of ...
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The aim of this study was to optimize the grinding process parameters (mesh size of grinder sieve (X1), the peripheral velocity of the grinding wheels (X2)), and the storage time (X3) of ground ginger rhizome and nutmeg to obtain ethanol and ethanol-water extracts with improved antioxidant properties. The optimal conditions were …
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The grinding debris is observed to reveal the material removal mechanism during the grinding processes. Fig. 5 shows the grinding debris mainly composed of banded debris, pieces of binding agent and broken abrasives, etc. The pieces of binder agent and broken abrasives are pulled out from the GWs during the grinding process.
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As a finishing process, grinding has also been attempted to improve surface integrity of various hard coatings. [7, 8] While the grinding increases hardness, it can deteriorate surface topography by increasing microcracks due to the co-existence of brittle fracture and ductile flow, which consequently compromises corrosion and fatigue …
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The effects of grinding (medium-coarse) and extraction time (14–22 h) on the physicochemical and sensorial properties of cold brew coffee produced using two types of Colombian specialty coffees ...
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Fundamentals of grinding mechanism. As a material removal process, grinding process is similar to other cutting processes in many respects, such as …
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Grinding process control balances these three interactions to achieve the desired parameters. These interactions feed into three major commercial grinding processes: rough grinding, precision grinding …
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Effect of grinding on the roundness and roughness of coal samples as a function of grinding time (2 min, 4 min and 16 min (from left to right)). ... In this paper, conventional grinding process was used to change the shape of coal particles. All experimental studies were performed under constant powder/grinding media volume in …
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The effect of ultra-fine milling of wheat straw was investigated on biogas production. Particles classes from 759 to 48 μm were obtained. Anaerobic biodegradability tests revealed that grinding has no effect on the total methane potential values but influences the methane production kinetics, particularly for particle sizes lower than 200 μm
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The machining quality of the blade tip has a great influence on the service performance and life of the aero-engine blade. The recent paper investigates the effect of vibration during the grinding process of the GH4169 nickel-based superalloy blade tip. Moreover, this paper proposes a theoretical model to link the unbalance of the grinding …
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Request PDF | Effect of grinding processes on enzymatic degradation of wheat straw | The effectiveness of wheat straw fine to ultra-fine grindings at pilot scale was studied. The produced powders ...
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Abstract. Grinding is a manufacturing process which signi ficantly contributes in producing high precision and durable components. required in numerous applications such as aerospace, defence and ...
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During the grinding process, each unit of material consumes a large amount of energy, and most of this energy will be converted into heat, thus increasing the temperature in the grinding area. ... Effect of grinding depth. The depth of grinding is an important processing parameter in nano-grinding, and a reasonable grinding …
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The reason for this phenomenon may be that under the action of the grinding force, the abrasive grains in the grinding wheel carry out sliding, plowing, and cutting movements on the workpiece surface along the grinding direction during the grinding process, resulting in the extrusion effect along the grinding direction . …
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To determine if bean origin has an effect on particle size distribution after grinding, beans were tested from four countries: Guatemala, El Salvador, Tanzania, and Ethiopia.
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Freeze-drying is an important processing unit operation in food powder production. It offers dehydrated products with extended shelf life and high quality. Unfortunately, food quality attributes and grinding characteristics are affected significantly during the drying process due to the glass transition temperature (during drying …
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25 rows4.1.3 Grinding. Grinding is a machining process that used grinding wheels as the cutting tool. The heat generation in grinding is significant high as there are a lot of …
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Effect of the grinding process on the surface quality of ultrafine cemented carbide with different Co content. December 2022; Advances in Mechanical Engineering 14(12):168781322211445;
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However, in the practical grinding process, considering the normal stock, gear and grinding worm are actually in surface contact rather than point contact. As is shown in Fig. 7, the macro-chip in CGG can be characterized by four parameters ... Effect of grinding parameters on tooth surface waviness.
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Back grinding of wafer with outer rim (BGWOR) is a new method for carrier-less thinning of silicon wafers. At present, the effects of process parameters on the grinding force remain debatable. Therefore, a BGWOR normal grinding force model based on grain depth-of-cut was established, and the relationship between grinding …
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