Research on Grinding Surface Roughness of Nanoceramic Coatings

2013 ◽  
Vol 709 ◽  
pp. 127-130 ◽  
Author(s):  
Wei Xiang Liu ◽  
Zhong Yu Zhou
Keyword(s):  
Surface Roughness ◽  
Grain Size ◽  
Ceramic Coatings ◽  
Wheel Speed ◽  
Grinding Wheel ◽  
Wheel Surface ◽  
Bond Type ◽  
Roughness Surface

Surface roughness of ceramic coatings are effected on grinding wheel grain size, bond type and grinding wheel surface roughness. Surface roughness increases with the increase of grinding depth and workpiece speed, and it decreases with the increase of wheel speed. grinding smoothly can reduce the surface roughness.

Particle detachment due to wheel rotation

2020 ◽  
pp. 1420326X2093516
Author(s):  
Jinwei Song ◽  
Hua Qian ◽  
Xiaohong Zheng
Keyword(s):  
Surface Roughness ◽  
Silicon Dioxide ◽  
Adhesion Force ◽  
Aluminium Oxide ◽  
Theoretical Models ◽  
Wheel Speed ◽  
Spherical Particles ◽  
Wheel Surface ◽  
Particle Detachment ◽  
Oxide Particles

Particle detachment induced by a rotating wheel was investigated theoretically and experimentally. The developed theoretical models were used to reveal how the particle detaches from a wheel surface to the surrounding air. The corresponding experiments were carried out to validate proposed models. Two groups of spherical particles were considered, i.e. silicon dioxide and aluminium oxide particles. Different forces and force moments acting on individual particles were analysed. The criteria for the rolling detachment of particles were considered. The detachment diameters under various conditions were calculated. The results show that the particle detachment was dominated by the removal and resistant forces acting on particles, including the gravity force, adhesion force, hydrodynamic force and centrifugal force. Different relevant parameters can affect particle detachment through these forces, including surface roughness, wheel speed, particle size and properties. A higher wheel speed, larger particle sizes and higher wheel surface roughness were shown to have a conducive influence on particle detachment. The resistant and removal force moments could be affected by the particle properties at the same time; therefore, the detachment diameters of the aluminium oxide particles are similar to those of silicon dioxide. This study can contribute towards the estimation of particle emissions from vehicles.

Study on the Simulation of Grinding Based on Virtual Reality Technology

2007 ◽  
Vol 561-565 ◽  
pp. 1887-1890
Author(s):  
Tian Biao Yu ◽  
Jian Yu Yang ◽  
Ya Dong Gong ◽  
F. Xu ◽  
F. Liang ◽  
...  
Keyword(s):  
Grain Size ◽  
Virtual Reality ◽  
Wheel Speed ◽  
Grinding Wheel ◽  
Feed Speed ◽  
Processing Quality ◽  
Virtual Reality Technology ◽  
Forming Mechanism ◽  
Wheel Model ◽  
Grain Distribution

For properly choosing grinding parameters, predicting probable faults and processing quality, simulation of grinding based on virtual reality technology was study. Physiognomy forming mechanism of grinding wheel was analyzed and a 3D virtual grinding wheel models was built. Effects to grinding wheel physiognomy by grain size and organization number were analyzed and grain distribution was visually represented. Effect to processing quality by grinding wheel granularity, dressing parameters, grinding wheel speed, feed speed and grinding depth was simulated. And experiments were carried out for comparative analyzing. Experiments result proved the reliability and practicality of the virtual grinding wheel model.

Study on the Grinding Process of Ceramic Zirconia Oxide Rod

2014 ◽  
Vol 575 ◽  
pp. 121-127
Author(s):  
Shinn Liang Chang ◽  
Dai Jia Juan ◽  
Bean Yin Lee ◽  
You Jhih Lin
Keyword(s):  
Surface Roughness ◽  
Grain Size ◽  
Rotation Speed ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Hard Machining ◽  
Grinding Machine ◽  
Diamond Grain ◽  
Zirconia Oxide

Grinding technology is used in this study to overcome the hard machining of ceramic with hard and brittle characteristics. The grinding machine with diamond grain size 25 and 5 , spindles speed 1720 rpm and 3450 rpm are applied. Combining the unintentional roll clamp and the grinding machine, ceramic rods can be ground to the desired size.In the research, surface profilometer is applied to measure the rod surface roughness of processing results under different conditions. The results show that the grinding wheel with finer particle, the roughness of the ground ceramic rod will be better. While the rotation speed of grinding wheel is increased, the surface roughness will have the same trend.

scholarly journals Evaluation of the Relationship Among Dressing Conditions Using Prismatic Dresser, Dressing Resistance, and Grinding Characteristics

2022 ◽  
Vol 16 (1) ◽  
pp. 12-20
Author(s):  
Gen Uchida ◽  
Takazo Yamada ◽  
Kouichi Ichihara ◽  
Makoto Harada ◽  
Tatsuya Kohara ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Surface Condition ◽  
Ground Surface ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Practical Application ◽  
Wheel Surface ◽  
The Difference ◽  
Ground Surface Roughness ◽  
The Relationship

In the grinding process, the grinding wheel surface condition changes depending on the dressing conditions, which affects the ground surface roughness and grinding resistance. Several studies have been reported on the practical application of dressing using prismatic dressers in recent years. However, only a few studies that quantitatively evaluate the effects of differences in dressing conditions using prismatic dresser on the ground surface roughness and grinding resistance have been reported. Thus, this study aims to evaluate quantitatively the effect of the difference in dressing conditions using the prismatic dresser on the ground surface roughness and grinding resistance by focusing on the dressing resistance. In the experiment, dressing is performed by changing the dressing lead and the depth of dressing cut with a prismatic dresser, and the ground surface roughness and grinding resistance are measured. Consequently, by increasing the dressing lead and the depth of dressing cut, the ground surface roughness increased, and the grinding resistance decreased. This phenomenon was caused by the increase in dressing resistance when the dressing lead and the depth of dressing cut were increased, which caused a change in the grinding wheel surface condition. Furthermore, the influence of the difference in dressing conditions using the prismatic dresser on the ground surface roughness and grinding resistance can be quantitatively evaluated by using the dressing resistance.

scholarly journals Research on selection of abrasive grain size and cutting parameters when grinding of interrupted surface using aluminum oxide grinding wheel with ceramic binder

2022 ◽  
pp. 93-102
Author(s):  
Do Duc Trung ◽  
Le Dang Ha
Keyword(s):  
Surface Roughness ◽  
Grain Size ◽  
Aluminum Oxide ◽  
Feed Rate ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Testing Sample ◽  
Abrasive Grain ◽  
Ceramic Binder

In this article, a study on intermittent surface grinding using aluminum oxide grinding wheel with ceramic binder is presented. The testing material is 20XH3A steel (GOST standard – Russian Federation). The testing sample has been sawn 6 grooves, with the width of each groove of 10 mm, the grooves are evenly distributed on the circumference of sample. The testing sample resembles a splined shaft. An experimental matrix of nine experiments has been built by Taguchi method, in which abrasive grain size, workpiece speed, feed rate and depth of cut were selected as input variables. At each experiment, surface roughness (Ra) and roundness error (RE) have been measured. Experimental results show that the aluminum oxide and ceramic binder grinding wheels are perfectly suitable for grinding intermittent surface of 20XH3A steel. Data Envelopment Analysis based Ranking (DEAR) method has been used to solve the multi-objective optimization problem. The results also showed that in order to simultaneously ensure minimum surface roughness and RE, abrasive grain size is 80 mesh, workpiece speed is 910 rpm, feed rate is 0.05 mm/rev and depth of cut is 0.01 mm. If evaluating the grinding process through two criteria including surface roughness and RE, depth of cut is the parameter having the greatest effect on the grinding process, followed by the influence of feed rate, workpiece speed, and abrasive grain is the parameter having the least effect on the grinding process. In addition, the effect of each input parameter on each output parameter has also been analyzed, and orientations for further works have also been recommended in this article

Analysis and Simulation of Grinding Wheel Surface Topography

2007 ◽  
Vol 359-360 ◽  
pp. 509-512
Author(s):  
Bin Lin ◽  
Xin Yan Huang
Keyword(s):  
Surface Roughness ◽  
Distribution Function ◽  
Statistical Analysis ◽  
Surface Topography ◽  
Grinding Wheel ◽  
Wheel Surface ◽  
Wheel Topography ◽  
Finished Surface ◽  
Grinding Wheel Topography

The topography of the grinding wheel has a profound effect in analysis and predicting the finished surface roughness. In this paper, the statistical analysis is applied to establish a distribution function of the grain protrusion heights, and the 3-D simulating topography of grinding wheel will be identified. Through experiments, the generated grinding wheel topography is effective in predicting the finished surface roughness.

Surface Layer Damage of Quartz Glass Induced by Ultra-Precision Grinding with Different Grit Size

2017 ◽  
Vol 872 ◽  
pp. 19-24
Author(s):  
Zong Chao Geng ◽  
Shang Gao ◽  
Ren Ke Kang ◽  
Zhi Gang Dong
Keyword(s):  
Surface Roughness ◽  
Quartz Glass ◽  
Subsurface Damage ◽  
Grinding Wheel ◽  
Precision Grinding ◽  
Diamond Grinding Wheel ◽  
Diamond Grinding ◽  
Roughness Surface ◽  
Ultra Precision ◽  
Damage Depth

Quartz glass is a typical hard and brittle material. During the manufacturing process of quartz glass components, ultra-precision grinding is widely used due to its high throughput and good dimensional accuracies. However, grinding will unavoidably induce large surface and subsurface damage. In this study, the surface and subsurface damage characteristics of quartz glass substrates ground by diamond wheels with different grit sizes were investigated in terms of surface roughness, surface topography, subsurface microcrack characteristic, and subsurface damage depth. Discussion was also provided to explore corresponding reasons of surface and subsurface damage induced by diamond grinding wheels with different grit sizes of #1500 and #2000. The experiment results showed that the surface roughness, surface damage, and subsurface damage depth induced by #2000 quartz glass was ground by #1500 diamond grinding wheel, and in ductile mode when ground by #2000 diamond grinding wheel.

Manufacturing Porous Diamond with Skeleton Structure from PCD by EDM and its Application to Grinding Tools

2007 ◽  
Vol 329 ◽  
pp. 471-476 ◽  
Author(s):  
Kiyoshi Suzuki ◽  
Danyang Zhang ◽  
Yoichi Shiraishi ◽  
Manabu Iwai ◽  
Tetsutaro Uematsu ◽  
...  
Keyword(s):  
Grain Size ◽  
Surface Finish ◽  
Polycrystalline Diamond ◽  
Diamond Wheel ◽  
Copper Electrode ◽  
Grinding Wheel ◽  
Not Given ◽  
Wheel Surface ◽  
Porous Skeleton ◽  
Skeleton Structure

This paper proposes a new PCD (polycrystalline diamond) wheel with porous skeleton structure realized by removing the cobalt binder from PCD by EDM (electrodischarge machining), and investigates the grinding characteristics of the wheel. The pores are made successfully on PCD by adopting appropriate EDM conditions. The efficiency of making the pores is found to be higher, when the size of the diamond grains in the PCD material is small, and jumping motion to the copper electrode is not given during the EDM. A porous PCD grinding wheel made by this method using a rotating circular PCD (grain size of 10'm) disc of 20mm diameter has a good skeleton structure with sufficient projections on the wheel surface. A satisfactory grinding characteristics with a surface finish of Ra=0.02'm in grinding on a tungsten carbide work is achieved.

Research on the Influence of NС Quick-Point Grinding Parameters to Complex Rotator Surface Roughness

2014 ◽  
Vol 556-562 ◽  
pp. 1083-1086
Author(s):  
Kai Wang ◽  
Wan Chen Sun ◽  
Feng Ming Nie ◽  
Qing Tang Wu ◽  
Huan Wu ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Rotational Speed ◽  
Wheel Speed ◽  
Grinding Wheel ◽  
Test Results ◽  
Shaft Speed ◽  
Linear Speed ◽  
Grinding Parameters ◽  
Grinding Machine ◽  
The Relationship

It studies the influence of linear speed of grinding wheel and rotational speed of workpiece to complex rotator surface roughness. Using self-designed NC quick-point grinding machine do the grinding test at different linear speeds of grinding wheel and different rotational speeds of workpiece, gained the relationship curve between the linear speed of grinding wheel, rotational speed of workpiece and complex rotator surface roughness. The test results show that using quick-point grinding technology can grind multiple external cylindrical and cone-shaped surfaces by only one time fixing, it can get 0.025um surface roughness in a reasonable condition of the grinding parameters. During point grinding process, higher wheel speed gets better surface roughness, higher workpiece shaft speed gets worse surface roughness.

Application of Lubrication Theory to Fluid Flow in Grinding: Part II—Influence of Wheel and Workpiece Roughness

2000 ◽  
Vol 123 (1) ◽  
pp. 101-107 ◽  
Author(s):  
P. Hryniewicz ◽  
A. Z. Szeri ◽  
S. Jahanmir
Keyword(s):  
Surface Roughness ◽  
Fluid Flow ◽  
Reynolds Equation ◽  
Hydrodynamic Pressure ◽  
Laminar Flows ◽  
Grinding Wheel ◽  
Wheel Surface ◽  
Significant Discrepancy ◽  
Model Fluid ◽  
Theory And Experiment

The objective of this study is to model fluid flow in grinding with nonporous wheels. While Part I focused on the flow in a simplified smooth geometry, in this part the wheel surface roughness is introduced. The applicability of the modified Reynolds equation for laminar flows between rough surfaces is verified experimentally in terms of the developed hydrodynamic pressure, using a resin-bonded diamond grinding wheel. The experiments were performed under the spark-out condition (i.e., with the wheel just touching the workpiece) and in actual grinding. Agreement between theory and experiment is shown for Re<100, but a significant discrepancy (most likely due to turbulence) is observed for 300<Re<1500.

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