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Online since: May 2009
Authors: Zhan Qiang Liu, S.J. Zhang
Heat Conduction Analysis of Coated Cutting Tools with
Temperature-dependent Properties
S.J.Zhang
a
and Z.Q.Liub
School of Mechanical Engineering, Shandong University, Jinan 250061, PR China
a
zhangsj.2007@mail.sdu.edu.cn,
b
melius@sdu.edu.cn
Key words: Temperature-dependent properties, Thermal conductivity, Coated cutting tools, Cutting
temperature.
Material property of coated tools is one of the most important factors effecting heat conduction and temperature on the rake face of coated tools.
To find the action of thermal properties of coated cutting tools on cutting temperature, the temperature distributions were obtained with temperature-dependent properties and temperature-independent properties of coated tools using numerical method.
Among them, thermophysical properties of tool and workpiece material used are decisive factors in the distribution of temperature fields and heat dissipation [1].
This paper focuses on the influence of temperature-dependent properties of different coatings.
Material property of coated tools is one of the most important factors effecting heat conduction and temperature on the rake face of coated tools.
To find the action of thermal properties of coated cutting tools on cutting temperature, the temperature distributions were obtained with temperature-dependent properties and temperature-independent properties of coated tools using numerical method.
Among them, thermophysical properties of tool and workpiece material used are decisive factors in the distribution of temperature fields and heat dissipation [1].
This paper focuses on the influence of temperature-dependent properties of different coatings.
Online since: December 2009
Authors: Yan He, Lian Xiang Ma, Zhong Yin, Jun Ping Song
How to obtain favorable mechanical properties, thermal properties and electrical conductivity seems
especially important.
In these thermal properties, thermal conductivity is one of the important factors.
The results show that the particle size of carbon black affects some of the mechanical properties of carbon black-filled nature rubber.
From the table 2, The mechanical properties of carbon black- filled nature rubber are: Shore A hardness 54~75degrees ,elongation at break 490.6%~781.3% and 300% modulus 4.6~17.12MPa.
(2)Particle size and the structure of carbon black also affect the mechanical properties of carbon black-filled nature rubber, the smaller carbon black Particle size and the higher structure of carbon black could improve tensile strength more.
In these thermal properties, thermal conductivity is one of the important factors.
The results show that the particle size of carbon black affects some of the mechanical properties of carbon black-filled nature rubber.
From the table 2, The mechanical properties of carbon black- filled nature rubber are: Shore A hardness 54~75degrees ,elongation at break 490.6%~781.3% and 300% modulus 4.6~17.12MPa.
(2)Particle size and the structure of carbon black also affect the mechanical properties of carbon black-filled nature rubber, the smaller carbon black Particle size and the higher structure of carbon black could improve tensile strength more.
Online since: April 2012
Authors: Li Jun Qiu, Su Ying Xu
Fit Clearance of Impeller to Turbocharger Performance Influence with Mechanics Properties
Suying Xu 1, a Lijun Qiu 2,b
1 Liaodong University Mechanical and Electrical College, Dandong 118003, liaoning,China
aXusuying0002@163.com, bqlj7710@163.com,
Keywords: Impeller shaft structure, impeller. gap, sports performance
Abstract: The fit clearance between the impeller and the impeller shell directly affect the characteristics of the turbocharger.
Raise power of engine, mechanical efficiency, emission of engine exhaust gas concentration reduced.
The impeller shaft component can be seen the impeller is the main factor affecting shaft dynamic balance.
The impeller and the shell space is determined the main factors affecting the efficiency of turbine supercharger.
Reference [1]Lijun Qiu, Restruction of Turbosupercharger's design exploration,Advanced Materials Research Vols(2010)102-104p60-63 [2] Northwestern Polytechnical University, mechanical principles and teaching and research compiled mechanical parts, Mechanical design, People's Education Press ,1979.9,491-492 (in chinese) [3] Urbocharger Co., Ltd. of Liaoning.
Raise power of engine, mechanical efficiency, emission of engine exhaust gas concentration reduced.
The impeller shaft component can be seen the impeller is the main factor affecting shaft dynamic balance.
The impeller and the shell space is determined the main factors affecting the efficiency of turbine supercharger.
Reference [1]Lijun Qiu, Restruction of Turbosupercharger's design exploration,Advanced Materials Research Vols(2010)102-104p60-63 [2] Northwestern Polytechnical University, mechanical principles and teaching and research compiled mechanical parts, Mechanical design, People's Education Press ,1979.9,491-492 (in chinese) [3] Urbocharger Co., Ltd. of Liaoning.
Online since: June 2015
Authors: Oscar Rubem Klegues Montedo, Flávia Dagostim Minatto, Agenor de Noni Jr., Pâmela Milak, Cristian Faller
Effect of dopants
The mechanical properties of alumina are influenced for the selection of additives [13,18-20] and dopants [15,21-25] utilized in sintering, that affect the distribution of grain size and the phases formed in the grain boundary.
It is known that the utilization of rare earths influences the mechanical properties, including fluency, fracture toughness and strength, among others, although it is unclear that the mechanism of the properties modification [24].
Taking into account that the rate of alumina wear is dependent of grain size [12] and the fracture toughness is affected by impurities, it is possible to establish the relation among mechanical, microstructural and tribological properties, considering on the information of average grain size and dopant concentration in the grain boundary [25].
The changes of the grain size and the presence of dopants in the grain boundary produced measurable changes in the mechanical properties and in the tribological behavior; however, those changes were smaller in magnitude [26].
However, in specific cases, the influence of the grain size of alumina on the mechanical properties interferes less than the formed intergranular phases, as shown by the results using Ti.
It is known that the utilization of rare earths influences the mechanical properties, including fluency, fracture toughness and strength, among others, although it is unclear that the mechanism of the properties modification [24].
Taking into account that the rate of alumina wear is dependent of grain size [12] and the fracture toughness is affected by impurities, it is possible to establish the relation among mechanical, microstructural and tribological properties, considering on the information of average grain size and dopant concentration in the grain boundary [25].
The changes of the grain size and the presence of dopants in the grain boundary produced measurable changes in the mechanical properties and in the tribological behavior; however, those changes were smaller in magnitude [26].
However, in specific cases, the influence of the grain size of alumina on the mechanical properties interferes less than the formed intergranular phases, as shown by the results using Ti.
Online since: June 2014
Authors: Yi Qun Huang, Ke Qiang Lai, Shuai Peng, Li Hong Niu
The present study was to investigate the film forming properties of tilapia skin gelatin as affected by the addition of 2%, 5% Arabic gum or pectin (g/g gelatin), as well as 1%, 2% glutaraldehyde (GTA) (g/g gelatin) in an attempt to improve gelatin film properties.
Determination of mechanical properties.
Results and Discussions Mechanical properties of gelatin films.
The test results of mechanical properties of gelatin film and gelatin-polysaccharides composite films were shown in Table 1.
These conclusions were in coincidence with the test results of film mechanical properties.
Determination of mechanical properties.
Results and Discussions Mechanical properties of gelatin films.
The test results of mechanical properties of gelatin film and gelatin-polysaccharides composite films were shown in Table 1.
These conclusions were in coincidence with the test results of film mechanical properties.
Online since: May 2011
Authors: Feng Xing, Xu Ming Mi
The change of each factor will inevitably affect the selection of technology.
It is very complex issue of changes of structure and properties of reinforced concrete.
Therefore, the durability of the structure and properties is not obvious.
According to the existing research analysis on the characteristics of steel corrosion, rust did not change significantly the mechanical properties of steel early.
The change of each factor will inevitably affect the selection of technology.
It is very complex issue of changes of structure and properties of reinforced concrete.
Therefore, the durability of the structure and properties is not obvious.
According to the existing research analysis on the characteristics of steel corrosion, rust did not change significantly the mechanical properties of steel early.
The change of each factor will inevitably affect the selection of technology.
Online since: May 2014
Authors: Lyudmila M. Kaputkina, Gwenola Herman, Evgueni I. Poliak, Artem Marmulev
Effects of Thermomechanical Processing on Uniformity of Microstructure and Properties of AHSS
Artem V.
Introduction For manufacturing of advanced high strength steel (AHSS) sheet products for automotive applications it is imperative to produce hot rolled bands with predefined microstructure and mechanical properties optimal for downstream processing.
Factors Responsible for Non-Uniformity of Hot Band Microstructure If the phase transformation of austenite on the run-out table is incomplete, it continues after the hot band coil has been made.
These two factors increase the extent of phase transformation on run-out table and consequently less transformation takes place in the coil.
[2] Marmulev A.V., Herman G., Poliak E.I., Kaputkina L.M., Factors Affecting Gauge Uniformity of Flat Cold Rolled AHSS, Proceeding of Materials Science and Technology (MS&T- 2011) International Conference, October 16-20, 2011, Columbus, Ohio, USA, p. 470 – 476.
Introduction For manufacturing of advanced high strength steel (AHSS) sheet products for automotive applications it is imperative to produce hot rolled bands with predefined microstructure and mechanical properties optimal for downstream processing.
Factors Responsible for Non-Uniformity of Hot Band Microstructure If the phase transformation of austenite on the run-out table is incomplete, it continues after the hot band coil has been made.
These two factors increase the extent of phase transformation on run-out table and consequently less transformation takes place in the coil.
[2] Marmulev A.V., Herman G., Poliak E.I., Kaputkina L.M., Factors Affecting Gauge Uniformity of Flat Cold Rolled AHSS, Proceeding of Materials Science and Technology (MS&T- 2011) International Conference, October 16-20, 2011, Columbus, Ohio, USA, p. 470 – 476.
Online since: September 2014
Authors: Artem Marmulev, Didier Huin, Eliette Mathey, Ronan Jacolot
Growing expectations of customers regarding the quality of hot rolled products is a driving force for a better understanding and control of the different factors responsible for this non uniform process and its impact on the final properties.
Impact of coil cooling conditions on properties Several authors have reported data showing the influence of coil cooling conditions on mechanical properties [5, 7].
Typically, for CMn and HSLA steels, pearlite softening and precipitation strengthening occur during coil cooling and affect the homogeneity of final properties.
It allows assessing the final microstructure and mechanical properties from the process parameters.
Indeed, one can see a slight decrease of mechanical properties at both extremities of the coil.
Impact of coil cooling conditions on properties Several authors have reported data showing the influence of coil cooling conditions on mechanical properties [5, 7].
Typically, for CMn and HSLA steels, pearlite softening and precipitation strengthening occur during coil cooling and affect the homogeneity of final properties.
It allows assessing the final microstructure and mechanical properties from the process parameters.
Indeed, one can see a slight decrease of mechanical properties at both extremities of the coil.
Online since: November 2006
Authors: Marcin Adamiak, Leszek Adam Dobrzański, Anna Włodarczyk-Fligier
Powder metallurgy makes materials properties relatively easy to control by mixing
materials with different properties in various proportion.
Deformation behaviour at extrusion temperature is dependant on many metallurgical and technological factors, e.g: temperature, flow rate, and extrusion ratio [3].
The goal of the work is to investigate the structure and selected mechanical properties of the composite materials with the EN AW-Al Cu4Mg1(A) aluminum alloy based matrix reinforced with the ceramic particles of the Ti(C,N) phase with various weight ratios.
Addition of Ti(C,N) decreases the tensile properties.
The biggest concentration of reinforcing particles, the lowest are properties.
Deformation behaviour at extrusion temperature is dependant on many metallurgical and technological factors, e.g: temperature, flow rate, and extrusion ratio [3].
The goal of the work is to investigate the structure and selected mechanical properties of the composite materials with the EN AW-Al Cu4Mg1(A) aluminum alloy based matrix reinforced with the ceramic particles of the Ti(C,N) phase with various weight ratios.
Addition of Ti(C,N) decreases the tensile properties.
The biggest concentration of reinforcing particles, the lowest are properties.
Online since: August 2021
Authors: Anastasia A. Yuzhakova, Dmitrii D. Salimgareev, Liya V. Zhukova
Zhukova1,c*
1Ural Federal University, Ekaterinburg, Russia
aa.a.lashova@ufru.ru, bd.d.salimgareev@urfu.ru, cl.v.zhukova@urfu.ru
Keywords: silver halides, thallium halides, optical properties, mechanical properties, electrical properties.
The authors have developed methods for studying the optical, mechanical and electrical properties of materials.
Analysis Methods and Formulas for Calculating Properties Methods for Measuring Optical Properties.
The analysis of mechanical properties is necessary for calculating the loads on the device during its design.
Methods for Measuring Electrical Properties.
The authors have developed methods for studying the optical, mechanical and electrical properties of materials.
Analysis Methods and Formulas for Calculating Properties Methods for Measuring Optical Properties.
The analysis of mechanical properties is necessary for calculating the loads on the device during its design.
Methods for Measuring Electrical Properties.