Prediction of surface residual stress after end milling based on cutting force and temperature

2016 ◽  
Vol 235 ◽  
pp. 41-48 ◽  
Author(s):  
Yuan Ma ◽  
Pingfa Feng ◽  
Jianfu Zhang ◽  
Zhijun Wu ◽  
Dingwen Yu
Keyword(s):  
Residual Stress ◽  
Cutting Force ◽  
End Milling ◽  
Surface Residual Stress

Prediction of surface residual stress in end milling with Gaussian process regression

Measurement ◽  
2021 ◽  
pp. 109333
Author(s):  
Minghui Cheng ◽  
Li Jiao ◽  
Pei Yan ◽  
Lvchen Feng ◽  
Tianyang Qiu ◽  
...  
Keyword(s):  
Residual Stress ◽  
Gaussian Process ◽  
End Milling ◽  
Gaussian Process Regression ◽  
Surface Residual Stress

The Effect of Cutting Speed on Precision Hard Turning of Hardened Steel

2012 ◽  
Vol 723 ◽  
pp. 343-347
Author(s):  
Tao Chen ◽  
Su Yan Li ◽  
Dong Kai Jia ◽  
Hui Sun ◽  
Lei Guo
Keyword(s):  
Residual Stress ◽  
Cutting Force ◽  
Hard Turning ◽  
Cutting Temperature ◽  
Fem Simulation ◽  
Cutting Speed ◽  
Hardened Steel ◽  
Surface Residual Stress ◽  
Softening Effect ◽  
Cutting Experiment

By combining cutting experiment with finite element method (FEM) simulation, the effect of cutting speed on cutting force, cutting temperature and workpiece surface residual stress has been studied in precision hard turning of hardened steel GCr15 with PCBN. The research results indicate that with rise of cutting speed, cutting force somewhat decreases and periodically changes because of metal softening effect, while cutting temperature increases and its maximum lies near tool tip on the interface of cutting chip and cutting edge, and residual stress largely decreases in a small area under workepiece surface and distributes clearly like a spoon. FEM simulation and experimental results are in good agreement.

Study on Machinability of Hydrogenated Ti-6Al-4V Alloy

2021 ◽  
Vol 1032 ◽  
pp. 147-151
Author(s):  
Zi Xuan Ding ◽  
Jian Fei Sun ◽  
Wei Dong Zhu
Keyword(s):  
Residual Stress ◽  
Titanium Alloy ◽  
Cutting Force ◽  
Surface Hardness ◽  
Machining Process ◽  
Surface Residual Stress ◽  
Before And After ◽  
Result Show

The milling experiments were conducted carried out which Ti-6Al-4V alloys with different amount of hydrogen permeating were processed, in order to explore various problem in the machining process of hydrogenated titanium alloy. The main cutting force, microhardness and residual stress before and after milling were measured. The experiments result show that Ti-6Al-4V alloy with appropriate amount of hydrogen can effectively reduce the cutting force, improve the surface hardness and reduce the surface residual stress.

Three Dimensional Finite Element Simulation for Surface Residual Stress in End Milling Process

2013 ◽  
Vol 589-590 ◽  
pp. 28-32 ◽  
Author(s):  
Sha Liu ◽  
Ping Fa Feng ◽  
Ding Wen Yu
Keyword(s):  
Residual Stress ◽  
Stress Measurement ◽  
End Milling ◽  
Material Model ◽  
Milling Process ◽  
Combination Method ◽  
Model Parameters ◽  
Surface Residual Stress ◽  
Simulation Accuracy ◽  
End Milling Process

This paper proposes a method to simulate residual stress induced by end milling process via 3-D FEM. First, Johnson-Cook material model parameters for a Japanese type of alloy steel (SCM440H) were extracted by a combination method. With the material model parameters, symmetrical end milling process for plate of SCM440H was simulated by FE software to get the residual stress distribution in the machined workpiece. Residual stress measurement experiment was carried out after end milling process to be compared with simulation result to verify the method, which proved that high simulation accuracy can be obtained by extracted material model parameters.

A Surface Residual-Stress Model of Optimizing Milling Parameters for Milling Aluminum Alloy 6061

2012 ◽  
Vol 426 ◽  
pp. 7-10 ◽  
Author(s):  
Yu Mei Liu ◽  
Z. L. Jiang ◽  
Z. Li
Keyword(s):  
Mathematical Model ◽  
Residual Stress ◽  
Response Surface Methodology ◽  
End Milling ◽  
Cutting Parameters ◽  
Design Experiment ◽  
Stress Model ◽  
Surface Residual Stress ◽  
Milling Parameters ◽  
Alloy 6061

The residual stress is one important factor causing deformation and distortion. A mathematical model is presented. It predicts the surface residual-stress caused by end-milling. Response Surface Methodology (RSM) with the Takushi method is used to design experiment. The variance analysis (ANOVA) is conducted to determine the adequacy of the model. It is shown that the model offering good correlation between the experimental and predicted results, is useful in selecting suitable cutting parameters for milling aluminium alloy 6061.

TEM investigations of surface residual stress relaxation in A12O3 and Al2O3-SiC nanocomposite

1994 ◽  
Vol 52 ◽  
pp. 628-629
Author(s):  
J. Fang ◽  
H. M. Chan ◽  
M. P. Harmer
Keyword(s):  
Residual Stress ◽  
Single Phase ◽  
Stress Relief ◽  
Stress Recovery ◽  
Surface Residual Stress ◽  
Microscopic Mechanism ◽  
Sic Particles ◽  
Annealing Procedure ◽  
The Difference ◽  
Nano Size

It was Niihara et al. who first discovered that the fracture strength of Al2O3 can be increased by incorporating as little as 5 vol.% of nano-size SiC particles (>1000 MPa), and that the strength would be improved further by a simple annealing procedure (>1500 MPa). This discovery has stimulated intense interest on Al2O3/SiC nanocomposites. Recent indentation studies by Fang et al. have shown that residual stress relief was more difficult in the nanocomposite than in pure Al2O3. In the present work, TEM was employed to investigate the microscopic mechanism(s) for the difference in the residual stress recovery in these two materials.Bulk samples of hot-pressed single phase Al2O3, and Al2O3 containing 5 vol.% 0.15 μm SiC particles were simultaneously polished with 15 μm diamond compound. Each sample was cut into two pieces, one of which was subsequently annealed at 1300° for 2 hours in flowing argon. Disks of 3 mm in diameter were cut from bulk samples.

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