Evaluation of effectiveness of cutting fluids for belt grinding of long-length products of titanium alloys

2020 ◽  
Author(s):  
Sergey Bratan ◽  
Tatiana Stadnik ◽  
Vasiliy Golovin
Keyword(s):  
Titanium Alloys ◽  
Cutting Fluids ◽  
Belt Grinding

scholarly journals Formulation of Sustainable Water-Based Cutting Fluids with Polyol Esters for Machining Titanium Alloys

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 773
Author(s):  
Elisabet Benedicto ◽  
Eva María Rubio ◽  
Laurent Aubouy ◽  
María Ana Sáenz-Nuño
Keyword(s):  
Molecular Structure ◽  
Tool Wear ◽  
Titanium Alloys ◽  
Film Formation ◽  
Cutting Fluid ◽  
Cutting Fluids ◽  
Lubricating Film ◽  
Wear Protection ◽  
Oil In Water ◽  
Polyol Esters

The machinability of titanium alloys still represents a demanding challenge and the development of new clean technologies to lubricate and cool is greatly needed. As a sustainable alternative to mineral oil, esters have shown excellent performance during machining. Herein, the aim of this work is to investigate the influence of esters’ molecular structure in oil-in-water emulsions and their interaction with the surface to form a lubricating film, thus improving the efficiency of the cutting fluid. The lubricity performance and tool wear protection are studied through film formation analysis and the tapping process on Ti6Al4V. The results show that the lubricity performance is improved by increasing the formation of the organic film on the metal surface, which depends on the ester’s molecular structure and its ability to adsorb on the surface against other surface-active compounds. Among the cutting fluids, noteworthy results are obtained using trimethylolpropane trioleate, which increases the lubricating film formation (containing 62% ester), thus improving the lubricity by up to 12% and reducing the torque increase due to tool wear by 26.8%. This work could be very useful for fields where often use difficult-to-machine materials—such as Ti6Al4V or γ-TiAl – which require large amounts of cutting fluids, since the formulation developed will allow the processes to be more efficient and sustainable.

On energetic assessment of cutting mechanisms in robot-assisted belt grinding of titanium alloys

2015 ◽  
Vol 90 ◽  
pp. 55-59 ◽  
Author(s):  
Dahu Zhu ◽  
Shiyuan Luo ◽  
Long Yang ◽  
Wei Chen ◽  
Sijie Yan ◽  
...  
Keyword(s):  
Titanium Alloys ◽  
Robot Assisted ◽  
Belt Grinding ◽  
Cutting Mechanisms

A Review on the Performance of Tribological Properties of Cutting Fluids

2015 ◽  
Vol 812 ◽  
pp. 102-106
Author(s):  
S. Ganesh ◽  
Jamaludeen Umar Mohamed ◽  
C. Rajaganapathy ◽  
V. Saravanakumar
Keyword(s):  
Titanium Alloys ◽  
Metal Removal ◽  
Mineral Oil ◽  
Industrial Sector ◽  
Cutting Fluid ◽  
Cutting Fluids ◽  
Mechanical Field ◽  
Major Application ◽  
Machining Operations

Tribology deals with friction, wear and lubricants. It plays an important role in mechanical field. It finds its major application in industrial and automotive sector, in which this thesis considered the tribology in metal removal industrial sector. In that application, the role of cutting fluid in lathe machining operations have been chosen. One of the most important challenging cases is to minimize the friction in machining of titanium alloys. While machining, the heat should be minimized as low as possible. This thesis deals with the study of cutting fluids in machining of titanium alloys. The problem occurs while using mineral oil as a cutting fluid in machining that it is non-biodegradable in nature and affects the environment while disposing it. This thesis aims to identify the alternate cutting fluids instead of mineral oil, which is to be effective cooling and non-toxic to environment. For that, Machining condition should be controllable by using some grammar rule without affecting the Productivity.

Application of cutting fluids in machining of titanium alloys—a review

2017 ◽  
Vol 91 (5-8) ◽  
pp. 2477-2498 ◽  
Author(s):  
Rukmini Srikant Revuru ◽  
Nageswara Rao Posinasetti ◽  
Venkata Ramana VSN ◽  
Amrita M
Keyword(s):  
Titanium Alloys ◽  
Cutting Fluids

Experimental Studies on Chemical Reactivity and Dimensional Growth in Machining of Titanium Alloys

1984 ◽  
Author(s):  
B. K. Subhas ◽  
R. A. Katti
Keyword(s):  
Heat Treatment ◽  
Titanium Alloys ◽  
Gas Turbine ◽  
Chemical Reaction ◽  
Chemical Reactivity ◽  
Experimental Studies ◽  
The Other ◽  
Cutting Fluids ◽  
Machining Parameters ◽  
Dimensional Growth

Machining of aero-gas turbine components made of titanium alloys, using different combination of tools, cutting fluids and machining parameters revealed two important characteristics namely, chemical reactivity and dimensional growth. The former is pronounced when machined with carbide tools using Sulphur based cutting oils. The reactivity was not noticeable when machined either with CBN or ceremet tools, contrary to the reports in the literature. This mechanism of chemical reaction has been studied including the development of microcracks at 400°F. The other phenomenon of dimensional growth is also anlysed in detail and machining parameters to reduce this growth are arrived at. The heat treatment is also envisaged to help in depriving of this detrimental dimensional growth by relieving the machining stresses. Also the scope for further research in this area is clearly defined.

The Finite Element Analysis of Surface Temperature on Dry Belt Grinding for Titanium Alloys

2008 ◽  
Vol 53-54 ◽  
pp. 219-224 ◽  
Author(s):  
Wen Guo Huo ◽  
Jiu Hua Xu ◽  
Yu Can Fu
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Titanium Alloys ◽  
Element Model ◽  
Grinding Temperature ◽  
Belt Grinding ◽  
Element Analysis ◽  
Line Heat Source ◽  
Variation Characteristics ◽  
Grinding Temperature Field

This paper studies the grinding temperature field of dry belt grinding titanium alloys using finite simulation and experiments. A reasonable finite element model of dry belt grinding temperature field is established on the basis of ANSYS. And three kinds of boundary conditions are loaded on the element of a moving line heat source. The corresponding computer program is designed to calculate the temperature field for different grinding parameters, and the experiment results show that the simulated temperature have good agreement with the measuring ones. The model could be utilized to forecast the distribution and variation characteristics of the grinding temperature field under different conditions.

Direct Observation of the Diffusionless β → β + ω Transformation in Titanium Alloys

1971 ◽  
Vol 29 ◽  
pp. 122-123
Author(s):  
N. E. Paton ◽  
D. de Fontaine ◽  
J. C. Williams
Keyword(s):  
Electron Microscope ◽  
Titanium Alloys ◽  
Direct Observation ◽  
Dark Field ◽  
X Ray Diffraction ◽  
Resistivity Measurements ◽  
Selected Area Electron Diffraction ◽  
Ti Alloys ◽  
Thin Foils ◽  
Field Device

The electron microscope has been used to study the diffusionless β → β + ω transformation occurring in certain titanium alloys at low temperatures. Evidence for such a transformation was obtained by Cometto et al by means of x-ray diffraction and resistivity measurements on a Ti-Nb alloy. The present work shows that this type of transformation can occur in several Ti alloys of suitable composition, and some of the details of the transformation are elucidated by means of direct observation in the electron microscope.Thin foils were examined in a Philips EM-300 electron microscope equipped with a uniaxial tilt, liquid nitrogen cooled, cold stage and a high resolution dark field device. Selected area electron diffraction was used to identify the phases present and the ω-phase was imaged in dark field by using a (101)ω reflection. Alloys were water quenched from 950°C, thinned, and mounted between copper grids to minimize temperature gradients in the foil.

The Ordered Phase Formation in Ti-Al-Ga Alloys

1970 ◽  
Vol 28 ◽  
pp. 440-441
Author(s):  
Shiro Fujishiro ◽  
Harold L. Gegel
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Titanium Alloys ◽  
Growth Kinetics ◽  
Stoichiometric Composition ◽  
Good Potential ◽  
Alpha Titanium ◽  
Cold Rolled ◽  
Kinetics Of ◽  
Thermal Stability Of

Ordered-alpha titanium alloys having a DO19 type structure have good potential for high temperature (600°C) applications, due to the thermal stability of the ordered phase and the inherent resistance to recrystallization of these alloys. Five different Ti-Al-Ga alloys consisting of equal atomic percents of aluminum and gallium solute additions up to the stoichiometric composition, Ti3(Al, Ga), were used to study the growth kinetics of the ordered phase and the nature of its interface.The alloys were homogenized in the beta region in a vacuum of about 5×10-7 torr, furnace cooled; reheated in air to 50°C below the alpha transus for hot working. The alloys were subsequently acid cleaned, annealed in vacuo, and cold rolled to about. 050 inch prior to additional homogenization

TEM characterization of reaction zone in a SiC fiber-reinforced titanium alloy

1988 ◽  
Vol 46 ◽  
pp. 738-739
Author(s):  
G. Das ◽  
R. E. Omlor
Keyword(s):  
Titanium Alloys ◽  
Reaction Zone ◽  
Carbon Layer ◽  
Fiber Reinforced ◽  
Reaction Products ◽  
Sic Fibers ◽  
Sic Fiber ◽  
The Matrix ◽  
Immense Potential

Fiber reinforced titanium alloys hold immense potential for applications in the aerospace industry. However, chemical reaction between the fibers and the titanium alloys at fabrication temperatures leads to the formation of brittle reaction products which limits their development. In the present study, coated SiC fibers have been used to evaluate the effects of surface coating on the reaction zone in the SiC/IMI829 system.IMI829 (Ti-5.5A1-3.5Sn-3.0Zr-0.3Mo-1Nb-0.3Si), a near alpha alloy, in the form of PREP powder (-35 mesh), was used a茸 the matrix. CVD grown AVCO SCS-6 SiC fibers were used as discontinuous reinforcements. These fibers of 142μm diameter contained an overlayer with high Si/C ratio on top of an amorphous carbon layer, the thickness of the coating being ∽ 1μm. SCS-6 fibers, broken into ∽ 2mm lengths, were mixed with IMI829 powder (representing < 0.1vol%) and the mixture was consolidated by HIP'ing at 871°C/0. 28GPa/4h.

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