Heat Cutting for Remanufacture Hardness Deposited Materials

2011 ◽  
Vol 101-102 ◽  
pp. 978-981
Author(s):  
Zhi Yuan Wu ◽  
Xiao Jun Shi ◽  
Xin Li Tian ◽  
Xiu Jian Tang ◽  
Shu Zhang
Keyword(s):  
Heating Temperature ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Test Results ◽  
Ceramic Tool ◽  
Cutting Depth ◽  
Si3n4 Ceramic ◽  
Importance Factor ◽  
Red Hardness ◽  
Better Than

Three cutting tools, YG610, Si3N4 ceramic tool and CBN were adopted for heat cutting deposited materials. The test results show that though the impacts to the tools reducing, the CBN still break seriously. The condition by Si3N4 ceramic tool is better than CBN, whose types of tool failure change from breakage to wear. The YG610 is best material for heat cutting, whose minimum VB value is only 0.3mm. In the experiment, the wear increase with the increasing of heating temperature, cutting speed, cutting depth. But it decreased with feed rate. The analysis results show that the red-hardness is most importance factor for wears of YG610.

Cutting Performance and Wear Mechanism of Si3N4-Based Nanocomposite Ceramic Tool

2010 ◽  
Vol 443 ◽  
pp. 324-329 ◽  
Author(s):  
Bin Zou ◽  
Chuan Zhen Huang ◽  
Han Lian Liu ◽  
Jin Peng Song
Keyword(s):  
Wear Resistance ◽  
Wear Mechanism ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Cutting Performance ◽  
Nano Particles ◽  
Ceramic Tool ◽  
Tool Materials ◽  
High Cutting Speed ◽  
The Matrix

Si3N4/TiN nanocomposite tool and Si3N4/Ti(C7N3) nanocomposite tool were prepared. The cutting performance and wear mechanism of Si3N4-based nanocomposite ceramic tool was investigated by comparison with a commercial sialon ceramic tool in machining of 45 steel. Si3N4-based nanocomposite ceramic tool exhibits the better wear resistance than sialon at the relatively high cutting speed. The increased cutting performance of Si3N4-based nanocomposite ceramic tool is ascribed to the higher mechanical properties. Nano-particles can refine the matrix grains and improve the bonding strength among the matrix grains of Si3N4-based nanocomposite ceramic tool materials. It contributes to an improved wear resistance of the cutting tools during machining.

The Application of FEA in High-Speed Cutting

2011 ◽  
Vol 287-290 ◽  
pp. 104-107
Author(s):  
Lian Qing Ji ◽  
Kun Liu
Keyword(s):  
High Speed ◽  
Feeding Rate ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Material Model ◽  
Friction Model ◽  
Cutting Depth ◽  
High Speed Cutting ◽  
Key Technologies

The history and application of the FEA are briefly presented in this paper. Several key technologies such as the building of material model, the establishment of the chip - tool friction model as well as meshing are described. Taking the high-speed cutting of titanium alloy (Ti - 10V - 2Fe - 3Al) as an example , reasonable cutting tools and cutting parameters are determinted by simulating the influences of cutting speed, cutting depth and feeding rate on the cutting parameters using FEA.

scholarly journals Experiments in the Machining of Ice at Negative Rake Angles

1984 ◽  
Vol 30 (104) ◽  
pp. 77-81 ◽  
Author(s):  
D.K. Lieu ◽  
C.D. Mote
Keyword(s):  
Cutting Force ◽  
Chip Formation ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Rake Angle ◽  
Cutting Depth ◽  
Orthogonal Machining ◽  
Cutting Force Components ◽  
Force Components

AbstractThe cutting force components and the cutting moment on the cutting tool were measured during the orthogonal machining of ice with cutting tools inclined at negative rake angles. The variables included the cutting depth (< 1 mm), the cutting speed (0.01 ms−1to 1 ms−1), and the rake angles (–15° to –60°). Results of the experiments showed that the cutting force components were approximately independent of cutting speed. The resultant cutting force on the tool was in a direction approximately normal to the cutting face of the tool. The magnitude of the resultant force increased with the negative rake angle. Photographs of ice-chip formation revealed continuous and segmented chips at different cutting depths.

Study on the Cutting Properties about Magnesium Alloy when Dry Turning with Kentanium Cutting Tools

2010 ◽  
Vol 102-104 ◽  
pp. 653-657 ◽  
Author(s):  
Xu Hong Guo ◽  
Li Jun Teng ◽  
Wei Wang ◽  
Ting Ting Chen
Keyword(s):  
Surface Roughness ◽  
Magnesium Alloy ◽  
Tool Wear ◽  
Cutting Force ◽  
Feed Rate ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Cutting Depth ◽  
Dry Turning ◽  
Main Influence

In recent years, the machinability of magnesium alloy is concerned more and more by the public. In this paper, a study on the cutting properties of magnesium alloy AZ91D when dry turning with kentanium cutting tools is presented. It shows the cutting force measured by a data acquisition system which is made up of Kistler9257B piezoelectric crystal sensor dynamometer, Kistler5070A10100 charge amplifier and computer. The effect of cutting parameters on cutting force was studied, and the experimental formula was built. The tool wear and chip characteristics were observed with KYKY-EM3200 electron scanning microscope and EDAX PV9900 alpha ray spectrometer, while the surface roughness of the workpiece was measured with 2205 profilometer. Results showed that the cutting depth was the main influence factor on cutting force, followed by feed rate and cutting speed . The main form of tool wear showed to be diffusive wear and adhesive wear. The feed rate had the main influence on chip form and the workpiece surface roughness, cutting speed was less effective, the cutting depth was the least.

scholarly journals Machinability of Luxury Vinyl Tiles during Plain Milling Using a Helical Cutter

Materials ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2174 ◽  
Author(s):  
Zhaolong Zhu ◽  
Pingxiang Cao ◽  
Xiaolei Guo ◽  
Xiaodong (Alice) Wang ◽  
Fan Zhang ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Cutting Force ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Helix Angle ◽  
Helical Milling ◽  
Tool Geometry ◽  
Cutting Depth ◽  
Diamond Cutting Tools

In order to better provide a theoretical basis for the machining of luxury vinyl tiles, a helical milling experiment was conducted by using diamond cutting tools, and special attention was given to the trends of cutting force and surface roughness in respect to tool geometry and cutting parameters. The results showed that the resultant force was negatively correlated to the helix angle and cutting speed, but positively correlated with the cutting depth. Then, that the surface roughness increased with a decrease of the helix angle and an increase of cutting depth, while as cutting speed raised, the surface roughness first declined and then increased. Thirdly, the cutting depth was shown to have the greatest influence on both cutting force and surface roughness, followed by helix angle and cutting speed. Fourth, the contribution of cutting depth only was significant to cutting force, while both the helix angle and cutting speed had insignificant influence on the cutting force and surface roughness. Finally, the optimal cutting conditions were proposed for industrial production, in which the helix angle, cutting speed and cutting depth were 70°, 2200 m/min and 0.5 mm, respectively.

Experiments in the Machining of Ice at Negative Rake Angles

1984 ◽  
Vol 30 (104) ◽  
pp. 77-81 ◽  
Author(s):  
D.K. Lieu ◽  
C.D. Mote
Keyword(s):  
Cutting Force ◽  
Chip Formation ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Rake Angle ◽  
Cutting Depth ◽  
Orthogonal Machining ◽  
Cutting Force Components ◽  
Force Components

AbstractThe cutting force components and the cutting moment on the cutting tool were measured during the orthogonal machining of ice with cutting tools inclined at negative rake angles. The variables included the cutting depth (< 1 mm), the cutting speed (0.01 ms−1 to 1 ms−1), and the rake angles (–15° to –60°). Results of the experiments showed that the cutting force components were approximately independent of cutting speed. The resultant cutting force on the tool was in a direction approximately normal to the cutting face of the tool. The magnitude of the resultant force increased with the negative rake angle. Photographs of ice-chip formation revealed continuous and segmented chips at different cutting depths.

Investigation of effects of MgO ratio on the surface quality and tool wear in turning Al–MgO composites

2017 ◽  
Vol 232 (12) ◽  
pp. 2122-2131 ◽  
Author(s):  
Muharrem Pul
Keyword(s):  
Boron Nitride ◽  
Feed Rate ◽  
Cubic Boron Nitride ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Numerical Control ◽  
Depth Of Cut ◽  
Matrix Composites ◽  
Test Results ◽  
Dry Cutting

In this study, specimens of Al–MgO metal matrix composites with reinforcement–volume ratios of 5%, 10% and 15% were produced using vacuum infiltration method. The produced specimens were then tested for machining on computer numerical control lathe using carbide, cubic boron nitride and coated cubic boron nitride cutting tools. Machining tests were performed under dry cutting conditions with three different feed rates (0.075, 0.15 and 0.225 mm/rev), four different cutting speeds (150, 200, 250 and 300 m/min) and fixed depth of cut (1 mm). The test results indicate that surface roughness (Ra) values for machined composite specimens were reduced as the cutting speed was increased, but increased as the feed rate was increased. The highest Ra values were observed at cutting speed of 150 m/min and at feed rate of 0.225 mm/rev. In general, the most stable results were achieved with C tools. The scanning electron microscope images of cutting tools suggest that the tip of tools had built-up edge and abrasive wear mechanism was effective on all of the cutting tools; and C tools, in general, provided the most stable results.

Research on Cutting Remanufacture Hardness Deposited Materials in the Impactive Condition

2010 ◽  
Vol 37-38 ◽  
pp. 998-1001
Author(s):  
Zhi Yuan Wu ◽  
Xiu Bing Liang ◽  
Xin Li Tian ◽  
Shu Zhang ◽  
Shu Hui Wang
Keyword(s):  
Feed Rate ◽  
High Performance ◽  
Cutting Tools ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Depth Of Cut ◽  
Cutting Depth ◽  
Orthogonal Experiments ◽  
Extreme Deviation ◽  
Manufacturing Productivity

High performance cemented carbide YG610 was adopted for remanufacture hardness deposited materials cutting experiment. The experiment results showed that the same conclusions can be drawn from two group orthogonal experiments. The influence order on cutting capability of cutting tools was: feed rate﹥cutting speed﹥ cutting depth. The cutting length of cutting tools increases monotonously with the feed rate decrease. And the effects by the cutting depth were comparatively small, which is almost negligible in hardness materials cutting. Therefore，low feed rate and large depth of cut are beneficial to keep cutting capability of cutting tools and improve manufacturing productivity. By the results of two orthogonal experiments and extreme deviation analysis, the optimal scheme for cutting parameters were achieved after calculating the best level of the factor.

Examining the machinability of 38MnVS6 microalloyed steel, cooled in different mediums after hot forging with the coated carbide and ceramic tool

2021 ◽  
pp. 095440622098449
Author(s):  
Barış Özlü ◽  
Halil Demir ◽  
Mustafa Türkmen ◽  
Süleyman Gündüz
Keyword(s):  
Surface Roughness ◽  
Cutting Force ◽  
Microalloyed Steel ◽  
Cutting Tools ◽  
Experimental Studies ◽  
Hot Forging ◽  
Cutting Speed ◽  
Depth Of Cut ◽  
Ceramic Tool ◽  
Coated Carbide

In this study, the effect of the microstructure, hardness, and cutting speed on main cutting force and surface roughness in medium carbon microalloyed steel cooled in different mediums after hot forging, was investigated. As-received sample, which was not hot forged, and the samples cooled in the sand, air, oil, and polymerized water after hot forging were used for the experimental studies. The machinability tests were performed via turning method by using coated carbide and coated ceramic cutting tools with five cutting speed (120, 150, 180, 210, and 240 m/min), constant feed rate (0.04 mm/rev), and constant depth of cut (0.6 mm). The microstructure examinations of the samples were carried out and their hardness values were determined. Also, the wear of cutting tools were examined with scanning electron microscope. In the experimental study, it was revealed that the microstructure, hardness and cutting speed had a significant effect on the surface roughness values of the samples cooled in dissimilar environments following forging. Moreover, the samples cooled in air and polymerized water, whose hardness increased depending on the increase in the cooling rate, had the highest cutting force after machining by using the coated carbide and ceramic tool.

Study on the Cutting Mechanism of Remanufacture Deposited Materials in the Impactive Condition

2010 ◽  
Vol 97-101 ◽  
pp. 1981-1984
Author(s):  
Zhi Yuan Wu ◽  
S.H. Wang ◽  
Xin Li Tian ◽  
Shu Zhang
Keyword(s):  
Cutting Tools ◽  
Main Role ◽  
Test Results ◽  
Cutting Mechanism ◽  
Deviation Analysis ◽  
Orthogonal Experiments ◽  
Importance Factor

Three cutting tools, YG8, YT15 and YW1, which are different in hardness and toughness, were adopted for deposited materials cutting. From the analysis of test results, it can be known that the toughness is the most importance factor for improving cutting capability when the hardness of deposited materials is low. And with the growth of hardness of workpieces, the hardness of cutting tools plays more and more important roles. When the hardness of deposited materials arrives to HRC56, the hardness of cutting tools becomes the main role for improving cutting capability. On the basis of the results of two orthogonal experiments and extremum deviation analysis, the best scheme for three deposited materials were achieved after obtaining the best level of the factor by computation.

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