Convective cooling and heat partitioning to grinding chips in high speed grinding of a nickel based superalloy

2021 ◽  
Author(s):  
Keli Peng ◽  
Pan Lu ◽  
Feihong Lin ◽  
Tan Jin ◽  
Wencheng Bao ◽  
...  
Keyword(s):  
High Speed ◽  
Convective Cooling ◽  
Nickel Based Superalloy ◽  
High Speed Grinding ◽  
Heat Partitioning

Forces and Chip Morphology of Nickel-Based Superalloy Inconel 718 during High Speed Grinding with Single Grain

2013 ◽  
Vol 589-590 ◽  
pp. 209-214 ◽  
Author(s):  
Jia Yan Zhao ◽  
Yu Can Fu ◽  
Jiu Hua Xu ◽  
Lin Tian ◽  
Lu Yang
Keyword(s):  
Inconel 718 ◽  
High Speed ◽  
Chip Thickness ◽  
Chip Morphology ◽  
Groove Surface ◽  
Nickel Based Superalloy ◽  
High Speed Grinding ◽  
Grinding Mechanism ◽  
Single Grain ◽  
Diamond Grain

Single-grain grinding test plays an important part in studying the high speed grinding mechanism of materials. In this paper, a new experimental system for high speed grinding test with single diamond grain is presented. The differences of surface topography and chip morphology of Inconel 718 machined by single diamond grain and single CBN grain were evaluated. The grinding forces and corresponding maximum undeformed chip thickness were measured under different grinding speeds. The chips, characterized by crack and segment band feature like the cutting segmented chips, were collected to study the high speed grinding mechanism of nickel-based superalloy. The results show that the grinding speed has an important effect on the forces and chip formation, partly due to the temperature variation. As the speed increases, the groove surface becomes smoother.

High Speed Grinding of Nickel-Based Superalloy with Single Diamond Grit

2011 ◽  
Vol 325 ◽  
pp. 140-146 ◽  
Author(s):  
Z.Z. Chen ◽  
Jiu Hua Xu ◽  
W.F. Ding ◽  
Z. Cheng ◽  
Y.C. Fu
Keyword(s):  
High Speed ◽  
Chip Thickness ◽  
Diamond Grit ◽  
Nickel Based Superalloy ◽  
Grinding Speed ◽  
High Speed Grinding ◽  
Grinding Mechanism ◽  
Set Up ◽  
Serrated Chips ◽  
Single Grit Grinding

Nickel-based superalloy plays an extremely important role in gas turbine engines in aerospace industry. To understand the high and super high speed grinding mechanism of nickel-based superalloy, the single-grit grinding mechanism is needed to be investigated. Previous studies on single grit were all carried out by mean of cutting or scratching. In this work, a novel experimental set-up of single-grit grinding had been developed to meet the reality of the complex kinematic grinding process. Grooves and collected chips were investigated in grinding of a typical nickel-based alloy GH4169 with wheel speed up to 150 m/s. The groove integrity is improved by increasing the grinding speed even though the chip thickness is kept constant. The typical serrated chips were observed and the frequency of chip segmentation increases linearly with the increasing of the grinding speed. Under high and super high grinding, the thermal softening due to the high temperature in adiabatic shear zone contributes to accelerate the chip formation and leads to decrease the grinding force.

Chip formation of nickel-based superalloy in high speed grinding with single diamond grit

2012 ◽  
Vol 5 (2) ◽  
pp. 93 ◽  
Author(s):  
Zhenzhen Chen ◽  
Lin Tian ◽  
Yucan Fu ◽  
Jiuhua Xu ◽  
Wenfeng Ding ◽  
...  
Keyword(s):  
Chip Formation ◽  
High Speed ◽  
Diamond Grit ◽  
Nickel Based Superalloy ◽  
High Speed Grinding

Residual Stresses in High Speed Turning of Nickel-Based Superalloy*

2014 ◽  
Vol 69 (1) ◽  
pp. 46-53 ◽  
Author(s):  
R. L. Peng ◽  
J.-M. Zhou ◽  
S. Johansson ◽  
A. Bellinius ◽  
V. Bushlya ◽  
...  
Keyword(s):  
Residual Stresses ◽  
High Speed ◽  
High Speed Turning ◽  
Nickel Based Superalloy

Simulation and Experiment on the Residual Stress in Super-High Speed Grinding

2010 ◽  
Vol 135 ◽  
pp. 238-242
Author(s):  
Yue Ming Liu ◽  
Ya Dong Gong ◽  
Wei Ding ◽  
Ting Chao Han
Keyword(s):  
Residual Stress ◽  
High Speed ◽  
Element Model ◽  
Residual Stress Distribution ◽  
X Ray Diffraction ◽  
Machined Surface ◽  
X Ray ◽  
High Speed Grinding ◽  
Simulation And Experiment ◽  
Cylindrical Workpiece

In this paper, effective finite element model have been developed to simulation the plastic deformation cutting in the process for a single particle via the software of ABAQUS, observing the residual stress distribution in the machined surface, the experiment of grinding cylindrical workpiece has been brought in the test of super-high speed grinding, researching the residual stress under the machined surface by the method of X-ray diffraction, which can explore the different stresses from different super-high speed in actual, and help to analyze the means of reducing the residual stresses in theory.

Explosion accident analysis of ultra-high-speed grinding wheel

2020 ◽  
pp. 105209
Author(s):  
Yao Wu ◽  
Pan Lu ◽  
Feihong Lin ◽  
Wencheng Bao ◽  
Meina Qu ◽  
...  
Keyword(s):  
High Speed ◽  
Grinding Wheel ◽  
Accident Analysis ◽  
Ultra High Speed ◽  
High Speed Grinding
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