Experimental and Numerical Study of the Cutting Temperature during the Turning of the C45 Steel

2016 ◽  
Vol 823 ◽  
pp. 507-512
Author(s):  
Mourad Abdelkrim ◽  
Mourad Brioua ◽  
Abderrahim Belloufi ◽  
Abdelhafid Gherfi
Keyword(s):  
Numerical Study ◽  
Digital Simulation ◽  
Cutting Temperature ◽  
Medium Carbon Steel ◽  
Simulation Software ◽  
Interface Temperature ◽  
Work Piece ◽  
Turning Process

In machining operation, the quality of surface finish is an important requirement for many turned work pieces. cutting temperature is one of the most important parameters in determining the cutting performance and tool life. the objective for this work is to estimate the cutting temperature in 3D model on tool-chip interface and the interface temperature during turning process, using the digital simulation software COMSOL Multiphysics.The tool–chip interface temperature results obtained from experimental results by using C45 medium carbon steel work piece with natural contact tools, without the application of cooling and lubricating agents and a K type thermocouple technique was used for estimating cutting temperatures in a turning operation.This procedure facilitates the determination of the temperature at tool-chip interface in dry turning process, which is still a challenge for existing experimental and numerical methods.

scholarly journals Determination of the Optimal Parameters in Brass Turning Process by Taguchi method

2021 ◽  
Vol 9 (7) ◽  
pp. 929-936
Keyword(s):  
Taguchi Method ◽  
Feed Rate ◽  
Material Removal ◽  
Depth Of Cut ◽  
Optimal Parameters ◽  
Turning Process ◽  
Control Factors ◽  
Variable Control

This research is a study of the turning process by testing with brass material. There are three control factors: spindle of speed, feed rate, and depth of cut respectively. The turning process requires variable control,affect the quality of production productivity and production costplanning an experiment with the Taguchi Method help in theexperiment the analysis of variance, orthogonal array, and signal and noise ratios were considered as an experiment and survey of brass turning characteristics to determine the lowest material removal rate.The results obtained from the experiment were used to repeat the experiment for confirmation. This requires the turning process to be reliable and optimized

Determination of Turning Knife Thermal Stress during Longitudinal Turning

2016 ◽  
Vol 821 ◽  
pp. 649-654
Author(s):  
Marek Stránský ◽  
Jaroslav Horský
Keyword(s):  
Machine Tools ◽  
Inverse Relationship ◽  
Work Piece ◽  
Machined Surface ◽  
One Dimensional ◽  
Friction Heat ◽  
Longitudinal Turning ◽  
New Machine

A turning knife contacts a work piece during turning. Due to friction, heat is produced proportionally to the turning speed. The resulting temperature influences the quality of the machined surface and wear of the knife. Thus, new machine tools must be developed that minimize the production of unwanted heat. To accomplish this task, a new experimental knife was prepared with thermocouples both built into it and welded to its surface. The measurement process was supplemented by thermovision. Heat flux and surface temperatures were computed from subsurface data using a one-dimensional inverse relationship. The detailed temperature distribution on the surface of the turning knife was determined using a combination of these methods.

Modelling and Optimization of Tool Chip Interface Temperature and Surface Roughness in CNC Dry Turning of EN 24 Steel

2016 ◽  
Vol 16 ◽  
pp. 7-15 ◽  
Author(s):  
Nirmal Kumar Mandal ◽  
Tanmoy Roy
Keyword(s):  
Surface Roughness ◽  
Cutting Tool ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Minimum Quantity Lubrication ◽  
Machining Process ◽  
Interface Temperature ◽  
Depth Of Cut ◽  
Work Piece ◽  
Substantial Impact

Abstract. Kinetic energy of a machining process is converted into heat energy. The generated heat at cutting tool and work piece interface has substantial impact on cutting tool life and quality of the work piece. On the other hand, development of advanced cutting tool materials, coatings and designs, along with a variety of strategies for lubrication, cooling and chip removal, make it possible to achieve the same or better surface quality with dry or Minimum Quantity Lubrication (MQL) machining than traditional wet machining. In addition, dry and MQL machining is more economical and environment friendly. In this work, 20 no. of experiments were carried out under dry machining conditions with different combinations of cutting speed, feed rate and depth of cut and corresponding cutting temperature and surface roughness are measured. The no. of experiments is determined through Design of Experiments (DOE). Nonlinear regression methodology is used to model the process using Response Surface Methodology (RSM). Multi-objective optimization is carried using Genetic Algorithm which ensures high productivity with good product quality.

The Coupling Thermal and Mechanical Analysis of Machining Aluminum Alloy Work-Piece Based on FEM

2013 ◽  
Vol 468 ◽  
pp. 20-23
Author(s):  
Mu Lan Wang ◽  
Jun Ming Hou ◽  
Bao Sheng Wang
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Cutting Force ◽  
Digital Simulation ◽  
Three Dimensional ◽  
Cutting Temperature ◽  
Element Model ◽  
Depth Of Cut ◽  
Work Piece ◽  
Cutting Model

The Cutting force and cutting temperature are the important factors which can affect the quality and accuracy of the aluminum alloy work-pieces. Based on the theoretical analysis of the cutting force and cutting temperature, the three-dimensional Finite Element Model (FEM) with the overall tool is established. The corresponding results of the digital simulation were researched, and the cutting force and cutting temperature were analyzed. The cutting temperature and cutting force changes were compared by altering the axial depth of cut and the feed rate. Keywords: Oblique cutting model, Finite Element Method (FEM), Cutting temperature, Cutting force, Aluminum alloy work-piece

Determination of Optimal Working Parameters of the Combined Burnishing - Turning Process by Applying the Method of Response Surfaces

2014 ◽  
Vol 657 ◽  
pp. 98-102
Author(s):  
Bogdan Chirita ◽  
Gheorghe Brabie ◽  
Gheorghe Mustea
Keyword(s):  
Experimental Tests ◽  
Response Surfaces ◽  
Hybrid Process ◽  
Turning Process ◽  
High Quality ◽  
Combined Process ◽  
Working Parameters ◽  
Machining Operations

The turning followed by burnishing is used like a combined process by using a combined tool having incorporated a turning tool and a burnishing system. This process is applied after different machining operations in a single hybrid process and can lead to the following advantages: the improvement of the part surfaces quality and to an important reduction of the costs and manufacturing times. The part surfaces quality obtained by applying the above mentioned process is influenced by a lot of factors, the most important among these being the working parameters. In the present paper there are presented the results concerning the determination of the optimal working parameters in order to obtain a high quality of the machined surfaces by applying the Response Surfaces method. The obtained results were verified by experimental tests and confirmed the efficacy of the method applied to optimize the results of the burnishing-turning combined process.

Analysis of Cutting Tools Durability Importance in Turning Process of Steel C60

2015 ◽  
Vol 669 ◽  
pp. 319-326 ◽  
Author(s):  
Ján Duplák ◽  
Michal Hatala ◽  
František Botko ◽  
Miroslav Kormoš
Keyword(s):  
Wide Spectrum ◽  
Cutting Tools ◽  
Cutting Conditions ◽  
Cutting Process ◽  
Work Piece ◽  
Turning Process ◽  
Taylor Rules ◽  
Cutting Insert ◽  
Quality Of Products

Durability of cutting tools consists form several partial sections. Determination of durability for each specific turning knife, milling head or cutting insert is very complicated. Wide spectrum of factors affects durability of cutting tools, which is important to study and analyze to point out the differences in this process. Major factor influencing cutting process is technological system, which consists of machine, toll, work piece and cutting conditions. In addition to used cutting material there are more parameters affecting cutting process. Properly selected cutting conditions and coating of cutting tool can accelerate production process, improve quality of products or vice versa economically disadvantages. Article deal with analyze of durability of selected cutting materials and compares results of experiment with F.W. Taylor rules and standard ISO 3685. Article highlights on differences developed due to different technological systems in turning process of steel C60. The article also describes process how to define and analytically expressT-vcdependence.

Multivariate Optimization of the Cutting Parameters when Turning Slender Components

2012 ◽  
Vol 2 (4) ◽  
pp. 12-31 ◽  
Author(s):  
A.R. Silva Filho ◽  
A.M. Abrão ◽  
A.P. Paiva ◽  
J.R. Ferreira
Keyword(s):  
Surface Roughness ◽  
Slenderness Ratio ◽  
Cutting Speed ◽  
Principal Component ◽  
Cutting Parameters ◽  
Medium Carbon Steel ◽  
Depth Of Cut ◽  
Work Piece ◽  
Multivariate Optimization

The geometric features of the work piece and the cutting parameters considerably affect the quality of a finished part subjected to any machining operation owing to the imposed elastic and plastic deformations, especially when slender components are produced. This work is focused on the influence of the work piece slenderness ratio and cutting parameters on the quality of the machined part, assessed in terms of surface roughness and both geometric (run-out) and dimensional (diameter) deviations. Turning tests with coated tungsten carbide tools were performed using AISI 1045 medium carbon steel as work material. Differently from the published literature, a statistical analysis based on the multivariate one-way analysis of variance (MANOVA) was applied to the data obtained using a Box-Behnken experimental design. In order to identify the combination of parameters (slenderness ratio, cutting speed, feed rate and depth of cut) levels which simultaneously optimize the responses of interest (surface roughness, run-out and diameter deviation), a multivariate optimization method based on principal component analysis (PCA) and generalized reduced gradient (GRG) was employed.

Tingkat Pemahaman Kompetensi Guru Pada Mahasiswa Pendidikan Geografi Sebagai Calon Guru Geografi

2020 ◽  
Vol 21 (1) ◽  
pp. 102-117
Author(s):  
Novia Zalmita ◽  
Muhajirah Muhajirah ◽  
Abdul Wahab Abdi
Keyword(s):  
Prospective Teachers ◽  
Prospective Teacher ◽  
Quantitative Description ◽  
Population Data ◽  
Geography Education ◽  
Teacher Competence ◽  
Education Department ◽  
Long Time

One that influences human resource indicators is education. The teacher is a profession as a job of academic specialization in a relatively long time in college. Understanding related to teacher competence is very important to have by a prospective teacher because it can affect the quality of performance as a professional teacher. The teacher's competence is known as pedagogic, professional, social and personality competencies. The issue in this study is how the competency of the teacher of the Department of Geography Education FKIP Unsyiah as a prospective teacher of geography? The purpose of this study was to determine the competence of teachers in the Department of Geography Education FKIP Unsyiah as prospective geography teachers. Quantitative description approach is used in this study to find answers to the issue. The population in this study were students of the Department of Geography Education FKIP Unsyiah class of 2015 and 2016 who had been declared to have passed the Micro Teaching and Magang Kependidikan 3 course totaling 50 people. Because the population is small and can be reached, the determination of the sample using total sampling techniques so that the sample in this study is the whole population. Data collection is done by distributing test questions to respondents. The data was analyzed using the descriptive statistics percentage formula. The results of the study indicate that the level of teacher competence of Geography Education Department students as prospective teachers is in the moderate category, namely as many as 22 respondents (44%). A total of 12 respondents (24%) were in the high category, 15 respondents (30%) were in the low category and 1 respondent (2%) were in the very low category.

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