A productive and cost-effective CBN hard milling-based fabrication method of hardened sliding guideways made of refined cast iron

2013 ◽  
Vol 70 (5-8) ◽  
pp. 911-917 ◽  
Author(s):  
Masakazu Soshi ◽  
Eisaku Ueda ◽  
Masahiko Mori
Keyword(s):  
Cast Iron ◽  
Cost Effective ◽  
Fabrication Method ◽  
Hard Milling ◽  
Sliding Guideways

A Simplified Fabrication Method of Dielectrophoresis Chip Using Au Thin-Film and Box Cutter

2014 ◽  
Vol 909 ◽  
pp. 58-62 ◽  
Author(s):  
Kyohei Nishimoto ◽  
Kozo Taguchi
Keyword(s):  
Thin Film ◽  
Frequency Dependence ◽  
Cost Effective ◽  
Sine Wave ◽  
Yeast Cells ◽  
Fabrication Method ◽  
Syringe Pump ◽  
Ac Electric Field ◽  
Viable Cells ◽  
Au Thin Film

We propose fabrication method of a planar quadrupole microelectrode for dielectrophoresis (DEP), which is fabricated by Au thin-film, ion coater and box cutter. This method is more cost effective and simpler than previous existing methods. We conducted two experiments for confirming usefulness of the Au DEP chip. Those are separation of yeast cells and trap force of DEP. To separate yeast cells, we used viable and non-viable cells. DEP force arises when an inhomogeneous AC electric field and sine wave frequency were applied to microelectrode. The Au DEP chip is able to distinguish between viable and non-viable cells and separate them by frequency dependence and the flow with Syringe pump. The chip can obtain viable cells which were trapped without contact to the microelectrode. The viable cells can use for fusion or cell culture. Furthermore, we carried out another experiment to investigate the trap force. The trap force of Negative-DEP becomes gradually weak when the frequency increases with 0.1, 0.5 and 1MHz. We were able to confirm relation between trap force and frequency by the Au DEP chip. The trap force has frequency dependence. Through the two experiments, we have established usefulness of the Au DEP chip.

scholarly journals ВПЛИВ УМОВ ІЗОТЕРМІЧНОГО ГАРТУВАННЯ НА ПСЕВДОПРУЖНУ ПОВЕДІНКУ БЕЙНІТНОГО ЧАВУНУ

World Science ◽  
2019 ◽  
Vol 1 (1(41)) ◽  
pp. 15-23
Author(s):  
Подрезов Ю. М. ◽  
Романко П. М. ◽  
Холявко В. В. ◽  
Марченко Н. М.
Keyword(s):  
Mechanical Properties ◽  
Cast Iron ◽  
Cost Effective ◽  
Ductile Cast Iron ◽  
Machine Building ◽  
Isothermal Quenching ◽  
Clear Understanding ◽  
Tempering Temperature ◽  
Theoretical Concepts ◽  
Damping Behavior

Application of ductile cast iron ADI is feasible and cost-effective, provided that there is a clear understanding of the mechanisms for the formation of their high complex mechanical properties. The use of such materials for the production of variable parts of machinery, or in other units of automobile and machine building will significantly extend the life of the equipment. It is established that the level of mechanical characteristics of the ADI cast iron varies in full accordance with the theoretical concepts of the influence of the tempering temperature on the formation of mechanical properties of such materials. The previous plastic deformation does not affect the mechanism of formation of pseudo-elasticity. The tendency to dampening increases with an increase in the temperature of isothermal quenching. The damping behavior of a material is a consequence of the formation of pseudo-elastic twins in the structure of the transformed martensite.

scholarly journals Impact Resistant Cast iron for Grinding Bodies

2020 ◽  
pp. 65-72
Author(s):  
Viktor Lomakin ◽  
◽  
Lyudmyla Molokost ◽  
Keyword(s):  
Cast Iron ◽  
Mass Fraction ◽  
Chromium Content ◽  
Impact Resistance ◽  
Dynamic Strength ◽  
Cost Effective ◽  
Low Carbon ◽  
Starting Point ◽  
The Impact ◽  
Chromium Cast Iron

A study of the dynamic strength (impact resistance) of grinding bodies cast from low-chromium cast iron in a multi-seat chill mold depending on the chromium content in the alloy is carried out. As a starting point, cast iron of the following composition was used: carbon – 3,0%, silicon – 1,6%, manganese – 0,4%, sulfur – 0,05%, phosphorus – 0,06%. For the study, several batches of balls with a diameter of 60 mm were cast with different chromium content in cast iron, from 0 to 1%. Cast iron was smelted in a medium-frequency induction furnace, such as IChT, with the main lining on a charge of pure pig iron and steel low-carbon scrap. The temperature of cast iron production was 1500 °C. Liquid cast iron was subjected to alloying with medium carbon ferrochrome. Balls were cast in multi-seat chill molds. When tested for impact resistance, the grinding ball received a striking blow of mass 50 kg, falling from a height of 0,5 m. The frequency of application of dynamic loads was 10 beats per minute. Impact resistance was determined by the average number of impacts sustained by the grinding body prior to destruction. An increase in the impact resistance of ball castings has been established with an increase in the mass fraction of chromium in cast iron up to 1%. Moreover, the greatest increase in dynamic strength is observed with an increase in the mass fraction of chromium from 0,3% to 0,5%. With a further increase in the chromium content, the impact resistance of white low-alloy cast iron increases less noticeably, and in the presence of chromium 0,7-0,8% reaches a maximum. The difference in hardness from the surface (~ 52 HRC) to the center of the ball (~ 42 HRC) is a value of about 10 units. The established impact resistance of grinding bodies made it possible to conclude: when grinding solid rocks with high content of solid quartz, the use of low chromium cast iron as a material for grinding media is the most effective, as in terms of achieve high impact resistance, and to ensure cost-effective performance.

scholarly journals Fabrication of High-Strength Gray Cast Iron Using Permanent Magnet Scrap

2017 ◽  
Vol 62 (2) ◽  
pp. 1113-1117
Author(s):  
Seung-Yeon Park ◽  
J.H. Kim ◽  
S.J. Seo ◽  
J.S. On ◽  
K.M. Lim
Keyword(s):  
Tensile Strength ◽  
Cast Iron ◽  
Permanent Magnet ◽  
High Performance ◽  
Gray Cast Iron ◽  
High Strength ◽  
Cost Effective ◽  
Gray Cast ◽  
Cast Irons ◽  
Cast Specimen

AbstractIn this study, we have developed the manufacturing technology for high strength gray cast irons by using the spent permanent magnet scraps. The cast specimen inoculated by using a spent magnet scraps showed the excellent tensile strength up to 306MPa. This tensile strength value is 50MPa higher than that of the specimen cast without inoculation, and is similar to that of the specimen inoculated by using the expensive misch-metal. These superior mechanical properties are attributed to complex sulfides created during solidification that promote the formation and growth of Type-A graphite. It is therefore concluded that spent magnets scrap can provide an efficient and cost-effective inoculation agent for the fabrication of high-performance gray cast iron.

Cost effective fabrication method for large sapphire sensor windows

2013 ◽  
Author(s):  
Mark Walters ◽  
Alan Gould ◽  
Kevin Bartlett ◽  
Matthew R. Brophy ◽  
Jessica DeGroote Nelson
Keyword(s):  
Cost Effective ◽  
Fabrication Method

scholarly journals Determination of low alloying element concentrations in cast iron by laser induced breakdown spectroscopy based on TEA CO2 laser system

2017 ◽  
Vol 82 (10) ◽  
pp. 1135-1145 ◽  
Author(s):  
Jelena Savovic ◽  
Sanja Zivkovic ◽  
Milos Momcilovic ◽  
Milan Trtica ◽  
Milovan Stoiljkovic ◽  
...  
Keyword(s):  
Cast Iron ◽  
Co2 Laser ◽  
Inductively Coupled Plasma ◽  
Laser System ◽  
Emission Spectra ◽  
Correlation Coefficients ◽  
Cost Effective ◽  
Linear Calibration ◽  
Fast Analysis ◽  
Breakdown Spectroscopy

The analytical capability of laser-produced plasma for the analysis of low alloying elements in cast iron samples has been investigated. The plasma was induced by irradiation of a sample in air at atmospheric pressure using an infrared CO2 laser. Emission spectra were recorded by time-integrated spatially- resolved measurement technique. A set of ten cast iron samples in a powder or particulate form were provided by BAM (Bundesanstalt f?r Material Forschung und Pr?fung, Deutschland), seven of which were used for calibration, and three were treated as unknowns. Linear calibration curves were obtained for copper, chromium, and nickel, with correlation coefficients above 0.99. Precision and accuracy of the LIBS method was evaluated and compared to those obtained by the inductively coupled plasma (ICP) analysis of the same samples. Detection limits for Cu, Cr and Ni were close to those reported in the literature for other comparable iron-based alloys obtained using different LIBS systems. Analytical figures of merit of the studied LIBS system may be considered as satisfying, especially in the light of other advantages of the method, like cost effective and fast analysis with no sample preparation, and with a possibility for real-time on-site analysis.

Characterization of Cast Iron Scrap Chips toward β-FeSi2 Thermoelectric Materials

2014 ◽  
Vol 804 ◽  
pp. 3-6 ◽  
Author(s):  
Assayidatul Laila ◽  
Makoto Nanko
Keyword(s):  
Electrical Conductivity ◽  
Cast Iron ◽  
Seebeck Coefficient ◽  
Power Factor ◽  
Thermoelectric Materials ◽  
Cost Effective ◽  
Recycling Process ◽  
Thermoelectric Power Factor ◽  
Iron Scrap

The upgrade recycling process of cast-iron scrap chips toward β-FeSi2 is regarded as an eco-friendly and cost-effective production process. It is useful for reducing the material cost in fabricating β-FeSi2 by utilizing the waste that is obtained from the manufacturing process of cast-iron components. In this research, β-FeSi2 was successfully obtained from cast iron bscrap chips and showed good thermoelectric performance in Seebeck coefficient and electrical conductivity which is around 70% to almost 100% compared to β-FeSi2 that was prepared from pure Fe and other publications. The thermoelectric power factor was achieved 90% performance compared to other literatures and β-FeSi2 prepared from pure Fe.

Effective Parameters of Terahertz Metamaterials Fabricated with Microfluidic-Jet Technique

2010 ◽  
Vol 1248 ◽  
Author(s):  
Zsolt Szabó ◽  
Yew Li Hor ◽  
Er Ping Li ◽  
Wolfgang J. R. Hoefer
Keyword(s):  
Mechanical Properties ◽  
Extraction Procedure ◽  
Cost Effective ◽  
Parameter Extraction ◽  
Fabrication Method ◽  
Effective Parameters ◽  
Terahertz Applications ◽  
Kronig Relation ◽  
Terahertz Metamaterials

AbstractA cost-effective fabrication method to engineer metamaterial structures with micrometersize features and novel mechanical properties, which are suitable for terahertz applications, is reported herein. The effective metamaterial parameter extraction procedure is employed with the Kramers-Kronig relation to analyze the effective parameters of single- and multilayer metamaterial structures.

scholarly journals Research on Cost-effective New Alloy Cast Iron

2019 ◽  
Vol 585 ◽  
pp. 012025
Author(s):  
Dong Sun ◽  
Lingfeng Zhang ◽  
Yi Xiong ◽  
Fengzhang Ren
Keyword(s):  
Cast Iron ◽  
Cost Effective ◽  
Alloy Cast Iron ◽  
Alloy Cast

A Simplified Fabrication Method of Dielectrophoresis Chip Using Au Thin-Film and Box Cutter

2014 ◽  
Vol 595 ◽  
pp. 65-69
Author(s):  
Kyohei Nishimoto ◽  
Kozo Taguchi
Keyword(s):  
Thin Film ◽  
Frequency Dependence ◽  
Cost Effective ◽  
Sine Wave ◽  
Yeast Cells ◽  
Fabrication Method ◽  
Syringe Pump ◽  
Ac Electric Field ◽  
Viable Cells ◽  
Au Thin Film

We propose fabrication method of a planar quadrupole microelectrode for dielectrophoresis (DEP), which is fabricated by Au thin-film, ion coater and box cutter. This method is more cost effective and simpler than previous existing methods. We conducted two experiments for confirming usefulness of the Au DEP chip. Those are separation of yeast cells and trap force of DEP. To separate yeast cells, we used viable and non-viable cells. DEP force arises when an inhomogeneous AC electric field and sine wave frequency were applied to microelectrode. The Au DEP chip is able to distinguish between viable and non-viable cells and separate them by frequency dependence and the flow with Syringe pump. The chip can obtain viable cells which were trapped without contact to the microelectrode. The viable cells can use for fusion or cell culture. Furthermore, we carried out another experiment to investigate the trap force. The trap force of Negative-DEP becomes gradually weak when the frequency increases with 0.1, 0.5 and 1MHz. We were able to confirm relation between trap force and frequency by the Au DEP chip. The trap force has frequency dependence. Through the two experiments, we have established usefulness of the Au DEP chip.

Sign in / Sign up

Export Citation Format

Share Document