Machining Performance of TiAlN-Coated Cemented Carbide Tools with Chip Groove in Machining Titanium Alloy Ti-6Al-0.6Cr-0.4Fe-0.4Si-0.01B

Ren, Zhaojun; Qu, Shengguan; Zhang, Yalong; Li, Xiaoqiang; Chao, Yang

doi:10.3390/met8100850

Cited by 14 publications

(9 citation statements)

References 51 publications

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“…Da Silva et al [ 6 ] showed that adhesion and attrition are dominant wear mechanisms in the machining of a Ti–6Al–4V alloy with PCD (Polycrystalline Diamond) tools with a high pressure coolant. Similar conclusions can be drawn from research conveyed by Ren et al [ 8 ] regarding machining with TiAlN-coated cemented carbide tools with chip groove. In turn, tool life improvement can be obtained from machining with cooling fluids.…”

Section: Introductionsupporting

confidence: 87%

“…During machining, the main problems are high temperature and concentration of stresses on the cutting edge, which causes the accelerated tool wear [ 6 , 7 , 8 ]. This is partly due to the poor thermal conductivity of titanium alloys.…”

Section: Introductionmentioning

confidence: 99%

“…Surface roughness and chip breakability were selected as optimization criteria due to their importance for the finishing turning process. Several studies that used the same approach can be found in the literature [ 3 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

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Turning Titanium Alloy, Grade 5 ELI, With the Implementation of High Pressure Coolant

2019

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In the machining of difficult-to-cut alloys, such as titanium-based alloys, the delivery of a cutting fluid with high pressure can increase machining efficiency and improve process stability through more efficient chip breaking and removing. Proper selection of machining conditions can increase the productivity of the process while minimizing production costs. To present the influence of cutting fluid pressure and chip breaker geometry on the chip breaking process for various chip cross-sections Grade 5 ELI titanium alloy turning tests were carried out using carbide tools, H13A grade, with a -SF chip breaker geometry under the cutting fluid pressure of 70 bar. Measurements of the total cutting force components for different cutting speeds, feeds, and cutting depth in finishing turning were carried out. The analysis of the obtained chips forms and the application area of the chip breaker have been presented. It was proved that for small depth of cut (leading to small chip cross-section) the cutting fluid pressure is the main cause of the chip breakage, since the insert chip breaker does not work. On the other hand, for bigger depths of cut where the chip breaker goes in action, the cutting fluid pressure only supports this process. For medium values of depths of cut the strength of chip is high enough so that the pressure of the cutting fluid cannot cause chip breaking. A chip groove is not filled completely so the chip breaker cannot play its role.

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Section: Introductionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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Turning Titanium Alloy, Grade 5 ELI, With the Implementation of High Pressure Coolant

2019

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“…The factors associated with the cutting tool can also affect the chip forming and breaking process. For example, the authors of [39] and Ren et al [40] presented the results of tests that concerned the impact of chip breaker geometry or protective coating on the cutting insert rake face. In turn, Pusavec et al [41] and Yi et al [42] discussed issues related to the optimization of machining of difficult-to-cut materials on CNC machine tools, due to carbon emissions.…”

Section: Chip Breakability Descriptionmentioning

confidence: 99%

Reduction of Power Consumption by Chip Breakability Control in Ti6Al4V Titanium Alloy Turning

2020

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The paper concerns the problem of energy savings in turning of titanium alloy Ti6Al4V. Since this alloy belongs to difficult to cut materials, there is a problem with chip forming and breaking. The turning process is often supported by implementing a high-pressure cooling (HPC) system. Based on the observations and the adopted chip classification method, the authors proved that it is not necessary to use this method in roughing operations, however it helps with the chips breaking process in finishing operations. A general algorithm for machining optimization due to the chip geometry is presented and described. In the presented case, it was shown that the acceptable chip geometry could be obtained with a reduced power consumption by approximately Pc = 0.5 kW. The authors concluded that it was not necessary to apply cutting data and a coolant system to achieve perfect chip geometry. An acceptable form was often sufficient, while requiring less energy. An additional factor resulting from the operation of systems supporting the cutting process, such as an HPC device, should be taken into account in the formula concerning the energy consumption (EC) of a computerized numerical control (CNC) machine tool.

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“…In recent years, carbide composite tools have been highly sought after by the industry for their excellent cutting performance and widely used for machining titanium alloys [ 1 ], bearing steel [ 2 ] and other materials [ 3 , 4 ]. In contrast, carbide tools suffer from severe tool wear, short service life and poor machining quality when used for difficult-to-cut materials such as printed circuit boards and ceramic-based composites [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Optimization of AlCrSiWN Coating Process Parameters and Performance Study by the Matrix Analysis Method

et al. 2022

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An AlCrSiWN coating was prepared on a cemented carbide substrate by the arc ion plating technology. The optimization of the coating process was carried out by matrix analysis of orthogonal experiments to calculate the influence of the process parameters on the hardness, bonding and roughness indexes of the coating, determine the optimal coating process parameters, and focus on the influence of the bias voltage on the microscopic morphology, mechanical properties and friction properties of the coating. The results showed that the influence of the process parameters on the indexes of the orthogonal experiments was in the following order: bias voltage > arc current > N2 flow rate. The optimal solution was achieved with an arc current of 160 A, a bias voltage of −80 V, and a N2 flow rate of 600 sccm. Properly increasing the bias voltage improved the microscopic morphology, mechanical properties and wear resistance of the coating. When the bias voltage was −80 V, the coating surface presented fewer large particles with a less uniform size and no obvious crater defects; in addition, the cross-sectional structure changed from grape-like to columnar, and the coating had higher hardness, lower roughness and better bond strength. In the friction performance test, coating at a −80 V bias voltage showed better wear resistance, which was reflected in lower friction coefficient and wear, and the wear mechanism mainly consisted of adhesion and oxidation wear.

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Machining Performance of TiAlN-Coated Cemented Carbide Tools with Chip Groove in Machining Titanium Alloy Ti-6Al-0.6Cr-0.4Fe-0.4Si-0.01B

Cited by 14 publications

References 51 publications

Turning Titanium Alloy, Grade 5 ELI, With the Implementation of High Pressure Coolant

Turning Titanium Alloy, Grade 5 ELI, With the Implementation of High Pressure Coolant

Reduction of Power Consumption by Chip Breakability Control in Ti6Al4V Titanium Alloy Turning

Optimization of AlCrSiWN Coating Process Parameters and Performance Study by the Matrix Analysis Method

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