scholarly journals A study of the cutting temperature during turning of hardened steels used for the manufacture of marine parts

2021 ◽  
pp. 42-46
Author(s):  
А.И. Пронин ◽  
В.В. Мыльников ◽  
Д.А. Валько ◽  
И.С. Синицын
Keyword(s):  
Cutting Force ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Radial Component ◽  
Hardened Steel ◽  
Cutting Ceramics ◽  
Two Factors ◽  
Optimization Parameters ◽  
Microsoft Office ◽  
Marine Vessels

В статье представлено решение задачи исследования температуры резания соответствующей оптимальным режимам твердого точения конструкционной легированной закаленной стали 15Х (HRC 55) применяемой для изготовления деталей машин входящих в конструкцию морских судов. В качестве параметра оптимизации принята радиальная составляющей силы резания и температура резания при обработке закаленной стали режущей керамикой. Исследовали влияние двух факторов скорости резания и подачи на оборот. Представлена методика проведения эксперимента и его результаты. На основе полученных экспериментальным путем зависимостей с помощью программы «Microsoft Office Excel» по зависимости силы резания и температуры резания от скорости резания представлены эмпирические зависимости радиальной составляющей силы резания и температуры резания от скорости резания и подачи на оборот. Определен характер влияния каждого фактора на параметр оптимизации. В итоге были определены оптимальные значения факторов, соответствующие минимальному значению радиальной составляющей силы и соответствующую этому значению температуру резания. The article presents a solution to the problem of studying the cutting temperature corresponding to the optimal modes of solid turning of structural alloy hardened steel 15KH (HRC 55) used for the manufacture of machine parts included in the design of marine vessels. The radial component of the cutting force and the cutting temperature when processing hardened steel with cutting ceramics are used as optimization parameters. The influence of two factors of cutting speed and feed rate on the turnover was investigated. The method of the experiment and its results are presented. The empirical dependences of the radial component of the cutting force and the cutting temperature on the cutting speed are presented on the basis of the experimental dependences obtained with the help of the program "Microsoft Office Excel" on the dependence of the cutting force and the cutting temperature on the cutting speed and feed per revolution. The nature of the influence of each factor on the optimization parameter is determined. As a result, the optimal values of the factors corresponding to the minimum value of the radial component of the force and the corresponding cutting temperature were determined.

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.

Cutting Temperature and Cutting Forces Investigation Based on the Taguchi Design Method when High-Speed Milling of Titanium Matrix Composites with PCD Tool

2016 ◽  
Vol 836-837 ◽  
pp. 168-174 ◽  
Author(s):  
Ying Fei Ge ◽  
Hai Xiang Huan ◽  
Jiu Hua Xu
Keyword(s):  
Cutting Force ◽  
Feed Rate ◽  
Cutting Forces ◽  
High Speed ◽  
Volume Fraction ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Depth Of Cut ◽  
High Speed Milling ◽  
Radial Depth

High-speed milling tests were performed on vol. (5%-8%) TiCp/TC4 composite in the speed range of 50-250 m/min using PCD tools to nvestigate the cutting temperature and the cutting forces. The results showed that radial depth of cut and cutting speed were the two significant influences that affected the cutting forces based on the Taguchi prediction. Increasing radial depth of cut and feed rate will increase the cutting force while increasing cutting speed will decrease the cutting force. Cutting force increased less than 5% when the reinforcement volume fraction in the composites increased from 0% to 8%. Radial depth of cut was the only significant influence factor on the cutting temperature. Cutting temperature increased with the increasing radial depth of cut, feed rate or cutting speed. The cutting temperature for the titanium composites was 40-90 °C higher than that for the TC4 matrix. However, the cutting temperature decreased by 4% when the reinforcement's volume fraction increased from 5% to 8%.

scholarly journals Analytical, FEA, And Experimental Research of 2D-Vibration Assisted Cutting ( 2D-VAC) In Titanium Alloy Ti6Al4V

2021 ◽  
Author(s):  
Rendi Kurniawan ◽  
Farooq Ahmed ◽  
Gun Chul Park ◽  
Tae Jo Ko
Keyword(s):  
Residual Stress ◽  
Plastic Strain ◽  
Cutting Force ◽  
Frequency Modulation ◽  
High Frequency ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Von Mises Stress ◽  
Micro Hardness ◽  
Micro Structure

Abstract In the 2D-Vibration Assisted Cutting (2D-VAC) method, the cutting tool shakes in a 2-dimensional approach because of superimposed high-frequency modulation. This high-frequency modulation effect creates a displacement at a tiny scale of micrometers and causes an escalation in the resultant cutting speed. Consequently, 2D-VAC has superior advantages compared to traditional cutting (TC). This manuscript describes research on 2D-VAC that focuses on modeling cutting forces (mathematical model) and finite element analysis (FEA) results. The FEA results are focused on the von Mises stress, plastic strain, cutting force, cutting temperature, and residual stress. In addition, an experiment for the chip formation, micro-structure layer, and micro-hardness was also analyzed in this study. According to the modeling results, the cutting force has a comparable pattern to the FEA results. The stress contour result confirms that the 2D-VAC method has lower stress than that in the TC method during tool retraction mode. Additionally, the plastic strain in the 2D-VAC method can be higher than that in the TC method. According to the temperature results, the peak temperature in the 2D-VAC could be higher than that in the TC method. The residual stress shows that there is a compressive effect. Thus, the compressive stress is higher than that in the TC method. Micro-hardness results confirmed that there is not too much change from the original surface in the 2D-VAC method. The result of micro-structure morphology also confirmed that there is a significant shear deformation flow in case of the TC method, although less occurs in the 2D-VAC method.

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.

scholarly journals Cutting Performance Evaluation of the Coated Tools in High-Speed Milling of AISI 4340 Steel

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3266 ◽  
Author(s):  
Yuan Li ◽  
Guangming Zheng ◽  
Xiang Cheng ◽  
Xianhai Yang ◽  
Rufeng Xu ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Cutting Force ◽  
High Speed ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Cutting Performance ◽  
High Speed Milling ◽  
Coated Tools ◽  
Coated Tool ◽  
Aisi 4340

The cutting performance of cutting tools in high-speed machining (HSM) is an important factor restricting the machined surface integrity of the workpiece. The HSM of AISI 4340 is carried out by using coated tools with TiN/TiCN/TiAlN multi-coating, TiAlN + TiN coating, TiCN + NbC coating, and AlTiN coating, respectively. The cutting performance evaluation of the coated tools is revealed by the chip morphology, cutting force, cutting temperature, and tool wear. The results show that the serration and shear slip of the chips become more clear with the cutting speed. The lower cutting force and cutting temperature are achieved by the TiN/TiCN/TiAlN multi-coated tool. The flank wear was the dominant wear form in the milling process of AISI 4340. The dominant wear mechanisms of the coated tools include the crater wear, coating chipping, adhesion, abrasion, and diffusion. In general, a TiN/TiCN/TiAlN multi-coated tool is the most suitable tool for high-speed milling of AISI 4340, due to the lower cutting force, the lower cutting temperature, and the high resistance of the element diffusion.

Cutting Performance and Failure Mechanisms of Coated Carbide Tools in Face Milling Powder Metallurgy Nickel-Based Superalloy

2012 ◽  
Vol 497 ◽  
pp. 94-98
Author(s):  
Yang Qiao ◽  
Xiu Li Fu ◽  
Xue Feng Yang
Keyword(s):  
Cutting Force ◽  
Feed Rate ◽  
Failure Mechanisms ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Face Milling ◽  
Nickel Based Superalloy ◽  
Coated Carbide ◽  
Coated Carbide Tools

Powder metallurgy (PM) nickel-based superalloy is regarded as one of the most important aerospace industry materials, which has been widely used in advanced turbo-engines. This work presents an orthogonal design experiments to study the cutting force and cutting temperature variations in the face milling of PM nickel-based superalloy with PVD coated carbide tools. Experimental results show that with the increase of feed rate and depth of cut, there is a growing tendency in cutting force, with the increase of cutting speed, cutting force decreases. Among the cutting parameters, feed rate has the greatest influence on cutting force, especially when cutting speed exceeds 60m/min. With the increase of all the cutting parameters, cutting temperature increases. However the cutting temperature increases slightly as the increasing of feed rate. Tool failure mechanisms in face milling of PM nickel-based superalloy are analyzed. It is shown that the breakage and spalling on the cutting edge are the most dominate failure mechanisms, which dominates the deterioration and final failure of the coated carbide tools.

Finite Element Simulation of Hardened Steel Cutting Based on DEFORM-3D

2014 ◽  
Vol 800-801 ◽  
pp. 259-263
Author(s):  
Liang Wang ◽  
Guang Jun Chen ◽  
Ling Guo Kong
Keyword(s):  
Finite Element ◽  
Cutting Force ◽  
Equivalent Stress ◽  
Cutting Speed ◽  
Hardened Steel ◽  
Feed Processing ◽  
Stress Study ◽  
Cutting Heat ◽  
Deform 3D ◽  
Steel Cutting

In order to better study hardened steel cutting process, we should model and simulate the process of cutting hardened steel by DEFORM-3D on the basis of applying finite element method to analyze the influence of cutting speed and feed to main cutting force, cutting heat and stress. Study shows that the cutting speed and feed is an important factor to determine the main cutting force. Cutting heat affects the physical properties of metal materials as a product of the energy conversion. The distribution of equivalent stress decided to point the strength of the cutting performance in different region. Reasonable utilization of cutting speed, feed processing has important significance for practical production on the premise of to ensure good cutting tool performance.

Taguchi Method Based Experiments of Titanium TC11 Flank Milling Parameters

2009 ◽  
Vol 407-408 ◽  
pp. 608-611 ◽  
Author(s):  
Chang Yi Liu ◽  
Cheng Long Chu ◽  
Wen Hui Zhou ◽  
Jun Jie Yi
Keyword(s):  
Surface Roughness ◽  
Cutting Force ◽  
Feed Rate ◽  
High Speed ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Flank Milling ◽  
Depth Of Cut ◽  
Machining Parameters ◽  
Mill Machining

Taguchi design methodology is applied to experiments of flank mill machining parameters of titanium alloy TC11 (Ti6.5A13.5Mo2Zr0.35Si) in conventional and high speed regimes. This study includes three factors, cutting speed, feed rate and depth of cut, about two types of tools. Experimental runs are conducted using an orthogonal array of L9(33), with measurement of cutting force, cutting temperature and surface roughness. The analysis of result shows that the factors combination for good surface roughness, low cutting temperature and low resultant cutting force are high cutting speed, low feed rate and low depth of cut.

A Parametric Optimization on Cutting Force during Laser Assisted Machining of Inconel 718 Alloy

2015 ◽  
Vol 787 ◽  
pp. 460-464 ◽  
Author(s):  
M. Vignesh ◽  
K. Venkatesan ◽  
R. Ramanujam ◽  
P. Kuppan
Keyword(s):  
Cutting Force ◽  
Feed Rate ◽  
Inconel 718 ◽  
Laser Power ◽  
Laser Cutting ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Work Piece ◽  
Conventional Machining

Inconel 718, a nickel based alloys, addressed as difficult to cut material because of hard carbide particle, hardness, work hardening and low thermal conductivity. Improving the machinability characteristics of nickel based alloys is a major anxiety in aircraft, space vehicle and other manufacturing fields. This paper presents an experimental investigation in Laser assisted turning of Inconel 718 to determine the effects of laser cutting parameters on cutting temperature and cutting forces. This nickel alloy has a material hardness at 48 HRC and machined with TICN/Al2O3/TiN tool. This is employed for the manufacture of helicopter rotor blades and cryogenic storage tanks. The experiments were conducted at One-Factor-at-a-Time.The effects of laser cutting parameters, namely cutting speed, feed rate, laser power and laser to work piece angle, on the cutting temperature and cutting force components, are critically analysed and the results are compared with unassisted machining of this alloy. The experiments are conducted by varying the cutting speed at three levels (50, 75, 100 m/min), feed rate (0.05, 0.075 0.1 mm/rev), laser power (1.25 kW, 1.5 kW, 1.75 kW) and at two level laser to work piece angle (60, 75°). At the optimal parametric combinationof laser power 1.5 kW with cutting speed of 75m/min, feed rate of 0.075 mm/min and laser to work piece angle 60°, the benefit of LAM was shown by 18%, 25% and 24% decrease in feed force (Fx), thrust force (Fy) and cutting force (Fz) as compared to those of the conventional machining. Examination of the machined surface hardness profiles showed no change under LAM and conventional machining.

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