Simulated and measured surface roughness in high-speed grinding of silicon carbide wafers

2016 ◽  
Vol 91 (1-4) ◽  
pp. 719-730 ◽  
Author(s):  
Shanshan Chen ◽  
Chifai Cheung ◽  
Chenyang Zhao ◽  
Feihu Zhang
Keyword(s):  
Surface Roughness ◽  
Silicon Carbide ◽  
High Speed ◽  
High Speed Grinding

Investigation of Surface Integrity on TC4-DT in High Speed Grinding with CBN Wheel

2014 ◽  
Vol 1027 ◽  
pp. 140-145
Author(s):  
Yao Guang Chen ◽  
Wen Zhuang Lu ◽  
Jun Xu ◽  
Yan Song Zhu ◽  
Dun Wen Zuo
Keyword(s):  
Surface Roughness ◽  
Surface Integrity ◽  
High Speed ◽  
Linear Velocity ◽  
Grinding Wheel ◽  
Cbn Wheel ◽  
Increasing Trend ◽  
High Speed Grinding ◽  
Weak Influence ◽  
Quality Surface

A series of grinding experiments were carried out with CBN wheel to focus on the surface integrity of titanium alloy TC4-DT in high speed grinding . In order to get the proper process parameters to control the surface integrity of the TC4-DT, surface roughness, subsurface morphology and microhardness variations have been studied. In addition to the use of CBN wheel, scanning electron microscopy (SEM), 3-d contour instrument and microhardness tester was applied. The results show that the surface roughness is decreased obviously when grinding wheel linear velocity rises from 60m/s to 80m/s. While the grinding speed rises from 80m/s to 100m/s, the surface roughness value increases slightly. Moreover, the surface roughness value increases with the grinding depth and the increasing trend is obvious in the process of machining. The microstructure analysis shows that during high speed grinding with CBN wheels, good quality surface with 10μm grinding depth can be obtained. Table feed rate has weak influence on the grinding surface topography. The microhardness analysis indicates that surface microhardness increases sharply with the increasing of grinding wheel linear velocity in high speed grinding.

scholarly journals Ductile grinding of Silicon carbide in high speed grinding

2016 ◽  
Vol 10 (2) ◽  
pp. JAMDSM0020-JAMDSM0020 ◽  
Author(s):  
Chongjun WU ◽  
Beizhi LI ◽  
Jingzhu PANG ◽  
Steven Y. LIANG
Keyword(s):  
Silicon Carbide ◽  
High Speed ◽  
Ductile Grinding ◽  
High Speed Grinding

Experimental Investigations on Cylindrical Grinding Temperature of Silicon Carbide

2015 ◽  
Vol 1120-1121 ◽  
pp. 1251-1256 ◽  
Author(s):  
Chong Jun Wu ◽  
Bei Zhi Li ◽  
Steven Y. Liang ◽  
Jian Guo Yang
Keyword(s):  
Silicon Carbide ◽  
High Speed ◽  
Ground Surface ◽  
High Energy ◽  
Dynamics Simulation ◽  
Distribution Model ◽  
Experimental Investigations ◽  
Grinding Temperature ◽  
Temperature Characteristics ◽  
High Speed Grinding

The grinding process requires a high energy expenditure per unit volume of material removed. The high temperature generated in abrasive processes is the main factor responsible for thermal damage to a ground surface. An investigation was undertaken to explore the temperature characteristics in high speed grinding (HSG) of silicon carbide (SiC) with a vitrified diamond wheel. A grindable thermocouople technique including a NI-DAQ device will be used to measure the grinding temperature. This paper will discuss the temperature characteristics in high speed grinding of SiC in detail and give an experiment-based temperature distribution model for SiC. A molecular dynamics simulation will be used to illustrate the effect of a high loading rate on SiC material’s mechanical property, which will further elaborate its unique HSG temperature characteristics. The experimental investigation will provide more practical application support in utilizing HSG technology in a high quality ceramic grinding.

Surface Quality of High Speed Milling of Silicon Carbide by Using Diamond Coated Tool

2013 ◽  
Vol 446-447 ◽  
pp. 275-278 ◽  
Author(s):  
Mohammad Iqbal ◽  
Mohamed Konneh ◽  
Ahmad Yasir Bin Md Said ◽  
Azri Fadhlan Bin Mohd Zaini
Keyword(s):  
Surface Roughness ◽  
Silicon Carbide ◽  
High Speed ◽  
Cutting Parameters ◽  
Machining Process ◽  
Depth Of Cut ◽  
Work Piece ◽  
Model Interaction ◽  
High Speed Milling ◽  
Coated Tool

The high speed milling of silicon carbide was discussed by using flat end-mill 2 mm in diameter diamond coated tool. Ultra-precision high speed spindle attachment was used to achieve cutting tool rotation speed as high as 50,000 rpm. Special fixture was designed to minimize the chatter on work-piece surface during the machining process. Three cutting parameters were selected as independent variables of the experiments. They were spindle speed, depth of cut and feed rate. The arithmetic mean value of roughness (Ra) was measured on the work-piece surface as the response of the experiment. Result of the experiment shows that the value of surface roughness can be achieved as low as 0.150 μm. Statistical analysis was provided to study the significant of the model, interaction among the cutting parameters and their effects to the surface roughness value.

Experimental Evaluations of High/Ultra-High Speed Grinding of Tungsten Carbide

2014 ◽  
Vol 575 ◽  
pp. 350-354
Author(s):  
Zhen Tao Shang ◽  
Ying Jia
Keyword(s):  
Surface Roughness ◽  
Process Parameters ◽  
High Speed ◽  
Chip Thickness ◽  
Cemented Carbides ◽  
Grinding Process ◽  
Grinding Forces ◽  
Undeformed Chip Thickness ◽  
High Speed Grinding ◽  
Experimental Researches

According to broken edges and cracks emerging in traditionally machining cemented carbides (CP1) materials, this paper carried out some experimental researches on high and ultra-high grinding process for these materials, and considered the effect of process parameters on grinding forces, surface roughness, surface quality; discusses the calculation of the single grinding average normals force and relationship with maximum undeformed chip thickness and theoretical critical normal loads; probes the removal mechanisms of cemented carbide in high/ultra-high grinding process.

Experimental Investigation on High-Speed Grinding of 40Cr Steel with Vitrified CBN Grinding Wheel

2010 ◽  
Vol 126-128 ◽  
pp. 154-158 ◽  
Author(s):  
Jian Wu Yu ◽  
Tao Chen ◽  
Zhen Tao Shang ◽  
Xiao Min Sheng ◽  
Gui Zhi Xie
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Feed Rate ◽  
High Speed ◽  
Grinding Force ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
High Speed Grinding ◽  
Cbn Grinding Wheel ◽  
Vitrified Cbn

This paper focuses on experimental investigation on high speed grinding of 40 Cr steel with vitrified CBN grinding wheel, the effect of grinding process parameters, such as grinding speed, depth of cut, and feed rate, on the grinding force and surface roughness are analyzed The experimental results reveal that the grinding force decreases with higher grinding speed and increases with the addition of depth of cut or feed rate, and the surface roughness is satisfactory in high speed grinding.

A Study of Machining Characteristics of YG8 in High Speed Grinding

2011 ◽  
Vol 487 ◽  
pp. 108-112 ◽  
Author(s):  
Jian Wu Yu ◽  
M. Cheng ◽  
Shao Hui Yin ◽  
G.Z. Xie ◽  
X.L. Zhou
Keyword(s):  
Surface Roughness ◽  
High Speed ◽  
Surface Characteristics ◽  
Grinding Force ◽  
Good Surface ◽  
High Speed Grinding ◽  
Grinding Conditions ◽  
Good Surface Roughness ◽  
Material Removal Mode ◽  
Machining Characteristics

The machining characteristics of cemented carbide YG8 under high speed grinding conditions are reported in this paper. The experimental investigation focused on the grinding force, surface roughness and surface characteristics influenced by various wheel speeds, feed rates and depths of cut. Surface roughness was slightly improved by increasing of wheel speed, and the increase in hmax generated bigger grinding force and decreased specific energy, which could be explained by material removal mode and SEM micrographs of surface. The results revealed that high machining efficiency was achieved and relatively good surface roughness was obtained simultaneously.

Research on Surface Quality for CBN Grinding Wheel Based on “Speed Effect”

2015 ◽  
Vol 667 ◽  
pp. 130-135
Author(s):  
Xue Sun ◽  
Tian Biao Yu ◽  
Wan Shan Wang
Keyword(s):  
Surface Roughness ◽  
Surface Quality ◽  
High Speed ◽  
Grinding Wheel ◽  
Grinding Speed ◽  
High Speed Grinding ◽  
Metal Materials ◽  
Speed Effect ◽  
Cbn Grinding Wheel

In order to study the influence of grinding surface quality affected by grinding speed for CBN grinding wheel, the method of simulation and experimentation used to study grinding surface quality of CBN grinding wheel. First, on the basis of grinding wheel topography, the influence of grinding surface quality affected by grinding speed was analyzed by adopting motion simulation method. Then, high-speed grinding experiment was carried out to three kinds of metal materials, and machined surface roughness and surface hardness after processing are measured and researched. Test shows that “speed effect” is remarkable in grinding metal materials. As the grinding speed increases, the grinding surface quality of workpiece is gradually improved. With the speed increasing, surface roughness of workpiecedecreases, and at lower speeds the surface roughness dropped more obvious. With grinding speed increases further, the change of roughness tends to be slow, and the bending point appears at about 100m/s.Surface hardening degree decreases with grinding speed increasing, when grinding speed up to high-speed grinding stage, the degree of hardening of the workpiece is more soothing.

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