scholarly journals Definition of cutting force constituents at turning depending on stress-strain properties of material worked

2016 ◽  
Vol 1 (11) ◽  
pp. 31-36
Author(s):  
Артём Чуприков ◽  
Artem Chuprikov ◽  
Александр Ямников ◽  
Aleksandr Yamnikov ◽  
Александр Харьков ◽  
...  
Keyword(s):  
Yield Strength ◽  
Tool Wear ◽  
Cutting Force ◽  
Experimental Verification ◽  
Rear Surface ◽  
Radius Of Curvature ◽  
New Materials ◽  
Shrinkage Factor ◽  
Actual Yield ◽  
Definition Of

Cited in the reference literature, empirical formula is usually acceptable for standard materials processed. When new materials have to repeat the experiments again. The article presents the analytical relationships derived from the generalization of the work of Russian and American scientists, in particular: VF Bobrov, NI Lvov, VS Kushner, a Merchant ME, Astakhov, V.P. These relationships relate the values of the components of the cutting force with time and the actual yield strength of the material being processed, making it much easier to calculate the components of the experiment of cutting force in turning based on the radius of curvature of the cutting edge and tool wear on the rear surface. Shrinkage factor chips taken approximately equal to one. Experimental verification showed acceptability found dependences for practical use, particularly important in the processing of materials of new brands.

scholarly journals Cutting force and tool wear in cutting Ti-6Al-4V using microstructure-based PCD turning tools

Procedia CIRP ◽  
2020 ◽  
Vol 95 ◽  
pp. 572-577
Author(s):  
Kai Jiang ◽  
Xiaoyu Wu ◽  
Jianguo Lei ◽  
Bin Xu ◽  
Likuan Zhu ◽  
...  
Keyword(s):  
Tool Wear ◽  
Cutting Force

Modeling of elastic-plastic deformation of the ring parts as applied to the analysis of the results of testing the material of the fuel-element cladding

2021 ◽  
Vol 87 (7) ◽  
pp. 67-75
Author(s):  
V. M. Markochev
Keyword(s):  
Yield Strength ◽  
Fuel Element ◽  
Yield Stress ◽  
Test Procedure ◽  
Analytical Formula ◽  
Residual Deformation ◽  
Pure Bending ◽  
Fuel Element Cladding ◽  
Current Form ◽  
Actual Yield

An analytical formula for a smooth description of the tension diagram of EK-181 steel and a method for rearranging the diagram when changing the direction of deformation are proposed for the first time. The process of straightening a quarter of an annular sample and further stretching is numerically modeled. It is shown that the conditional yield strength of the material of the straightened sample is 7.5% less than the actual conditional yield strength of steel. It is shown that the test for pure bending of a cantilever sample in the form of a semicircle with the processing of the bending diagram (by analogy with GOST 3565–80 for torsion) provides an estimate of the conditional yield strength which is 32% higher than the actual yield strength. The possibility of numerical reconstruction of the tension diagram from the diagram of pure bending of a cantilevered semi-ring sample is proved. It is shown that this procedure really gives the value of the conditional yield strength of steel EK-181 with a tolerance for the residual deformation of 0.2%. The analysis of the test procedure for the rings of fuel element cladding and the proposed algorithm for determination of the conditional yield stress of the ring material is carried out. Attention is drawn to the arbitrariness of the choice of the designed load on the two-stage diagram of the diametrical tension of the ring and to the lack of scientific substantiation of the possibility of determining the yield stress on the second part of the diagram. It is shown that this method in the current form contradicts GOST for tensile testing due to the absence of a base with a uniform stress state on the ring. Therefore, the considered method is not recommended for determining the values of the conditional yield strength suitable for strength calculations.

Dry Machining of Inconel 825 Superalloys

2021 ◽  
Vol 11 (4) ◽  
pp. 26-39
Author(s):  
Kshitij Pandey ◽  
Saurav Datta
Keyword(s):  
Tool Wear ◽  
Surface Morphology ◽  
Cutting Force ◽  
Carbide Tool ◽  
Dry Machining ◽  
Machining Performance ◽  
Force Magnitude ◽  
Wear Pattern ◽  
Inconel 825

The present work investigates application feasibility of PVD TiN/TiCN/TiN coated cermet and CVD Al2O3/TiCN coated SiAlON for dry machining of Inconel 825 superalloy. Machining performance is interpreted through cutting force magnitude, tool-tip temperature, and mechanisms of tool wear. Results are compared to that of CVD multi-layer TiN/TiCN/Al2O3/TiN coated WC-Co tool. It is evidenced that SiAlON tool generates lower cutting force but experiences higher tool-tip temperature than other two counterparts. Apart from abrasion and adhesion, carbide tool witnesses coating peeling and ploughing. In contrast, SiAlON tool suffers from inexorable chipping and notching. Wear pattern of cermet tool seems less severe than carbide and SiAlON. Chip's underside surface morphology appears relatively better in case of cermet tool.

scholarly journals A fuzzy set model for assessment of a perspectives level for integration of new materials in industrial enterprise processes

2018 ◽  
Vol 44 ◽  
pp. 00045
Author(s):  
Elena Kasianenko ◽  
Evgenii Konnikov ◽  
Nikita Lukashevich
Keyword(s):  
Risk Process ◽  
Industrial Enterprise ◽  
New Materials ◽  
Process Systems ◽  
Industrial Enterprises ◽  
Definition Of ◽  
Effective Models ◽  
Further Development ◽  
Qualitative Changes

The definition of effective improvement vectors is currently one of the most pressing challenges facing the industry representatives. The transition to the sixth technological mode effectively contributes to competition intensification in all markets of industrial products. This is largely due to the fact that existing process systems are at the peak of their effectiveness. Further development requires qualitative changes. However, the principal improvement is a long-term and high-risk process. For this reason the issue of creating effective models for assessment of the strategic lines of processes improvement becomes increasingly important for industrial enterprises. This article considers in details the vector of industrial enterprise processes improvement based on the integration of new materials. As a result, a model allowing to assess a perspectives level for integration of new materials in industrial enterprise processes is created.

Study of the Effect of Tool Wear on Cutting Ti6Al4V Process

2013 ◽  
Vol 690-693 ◽  
pp. 2030-2035
Author(s):  
Shu Bao Yang ◽  
Hong Chao Ni ◽  
Guo Hui Zhu
Keyword(s):  
Tool Wear ◽  
Cutting Force ◽  
Cutting Temperature ◽  
Chip Morphology ◽  
Key Factors ◽  
Serrated Chip ◽  
Comprehensive Properties ◽  
Commercial Applications ◽  
On Chip ◽  
Rapid Tool

Ti6Al4V alloy is widely used in the aircraft industry, marine and the commercial applications due to its excellent comprehensive properties. However, its poor machinability prevents it from application widely, and the rapid tool wear is one of the key factors. The FEM models of cutting titanium alloy are established. The effect of tool wear on chip morphology, cutting temperature and cutting force are studied. The simulation results show that: the cutting force and cutting temperature will rise with the increase of tool wear. Furthermore, the degree of chip deformation will improve, but the frequency of serrated chip tooth occurred will decrease.

Influence of cutting speed on cutting force, flank temperature, and tool wear in end milling of Ti-6Al-4V alloy

2013 ◽  
Vol 70 (9-12) ◽  
pp. 1835-1845 ◽  
Author(s):  
Junzhan Hou ◽  
Wei Zhou ◽  
Hongjian Duan ◽  
Guang Yang ◽  
Hongwei Xu ◽  
...  
Keyword(s):  
Tool Wear ◽  
Cutting Force ◽  
End Milling ◽  
Cutting Speed

Experimental Investigation of Mechanical-Thermal Characteristics in High Efficiency Turning Titanium Alloy Ti6Al4V

2016 ◽  
Vol 836-837 ◽  
pp. 20-28
Author(s):  
Li Min Shi ◽  
Cheng Yang ◽  
Qi Jun Li
Keyword(s):  
Titanium Alloy ◽  
Tool Wear ◽  
Cutting Force ◽  
High Efficiency ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Thermal Characteristics ◽  
Tool Failure ◽  
Minimal Quantity Lubrication ◽  
Titanium Alloy Ti6al4v

Titanium alloy Ti6Al4V has poor machinability, which leads to high unit cutting force and cutting temperature, rapid tool failure. In this study, the effect of the cutting speed, feed rate and cooling condition on cutting force and cutting temperature is critically analysed by turning experiment. At the same time, the relationship is established among tool wear, cutting force and cutting temperature. This investigation has shown that cutting speed is the decisive factor which increasing cutting force and cutting temperature. In the process of turning, tool wear results in high amounts of heat and mechanical stress, which leads to serious tool wear. The Minimal Quantity Lubrication reduces the frictional condition at the chip-tool, decreases cutting force and cutting temperature, and delays the tool failure.

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