scholarly journals Modification of cast alloys nanostructured material

2021 ◽  
pp. 37-41
Author(s):  
P. A. Vitiaz ◽  
N. A. Svidunovich ◽  
D. V. Kuis ◽  
Yu. A. Nikalaichyk ◽  
S. L. Rovin
Keyword(s):  
Cast Iron ◽  
Composite Materials ◽  
High Speed ◽  
Materials Science ◽  
Gray Cast Iron ◽  
Nanostructured Material ◽  
Ferrous Alloys ◽  
State Technological ◽  
Cast Alloys ◽  
Technological University

The third article of the series devoted to the application of nanomaterials and nanotechnologies in industry in general and, first of all, in metallurgy, materials science and foundry is presented. This article deals with the use of nanomaterials for the improvement of ferrous and non-ferrous alloys by micro-alloying and modifying methods, as well as the synthesis of new composite materials. The results of research on C-B-Fe composites obtained at the Belarusian State Technological University, a method for modifying gray cast iron with micro-additives of abrasive slurries of high-speed steels, proposed by specialists of BNTU and OJSC «MTW», and aluminum alloys modified with nanostructured carbideand nitride-containing powders developed by Belarusian, Bulgarian and Russian scientists are presented.

Surface Integrity of a High Speed Milling FC300 Gray Cast Iron

2013 ◽  
Vol 465-466 ◽  
pp. 642-646 ◽  
Author(s):  
Abu Bakar Mohd Hadzley ◽  
Mohamad Raffi Nurul Fatin ◽  
Raja Abdullah Raja Izamshah ◽  
Nur Izan Syahriah Hussein ◽  
Ahmad Siti Sarah ◽  
...  
Keyword(s):  
Cast Iron ◽  
Automotive Industry ◽  
High Speed ◽  
Gray Cast Iron ◽  
Gray Cast ◽  
Surface Finishing ◽  
High Speed Machining ◽  
High Productivity ◽  
Die Surface ◽  
End Mills

The high speed machining (HSM) of gray cast iron for manufacture mold and dies involve many different cutting tool from deep hole drills to smallest ball nose end mills [. Due to the demand of fast and high productivity, high speed machining (HSM) has been increasingly used to produce mold and dies that are mostly used in automotive industry especially for stamping dies components. The process of HSM sometimes combined together with manual polishing to enhance the die surface into fine mirror finish. Although the manual polishing strongly depends by experience and skill of workers, this technique is the preferable option for polishing of moulds and dies. However, such extensive manual polishing will provide some drawback because of many human factors such as pressure and technique of polishing individual person uses. Therefore, the application high speed machining in manufacturing is still demanding as it can improve surface finishing by reducing manual polishing, reportedly account for up to 30% of the total time [2].

Machinability by Milling of Gray Cast Iron

2014 ◽  
Vol 657 ◽  
pp. 88-92
Author(s):  
Traian Grămescu ◽  
Constantin Cărăușu
Keyword(s):  
Cast Iron ◽  
High Speed ◽  
Gray Cast Iron ◽  
Cutting Speed ◽  
High Speed Steel ◽  
Empirical Models ◽  
Major Influence ◽  
Iron Castings ◽  
Milling Tool ◽  
Grey Iron

In the laboratory of cutting machining technologies from the “Gheorghe Asachi” Technical University of Iaşi, a series of investigations on the machinability of cast iron samples having various structures were designed and developed. The aim of the research was to know and to explain the way in which various constituents of some iron castings exert influence on the degree of wear of a milling tool made of high speed steel. Within this research, mathematical empirical models were determined, in order to calculate the cutting speed v60, considered as an indicator for the evaluation of machinability. The research allowed establishing the factors able to have a major influence on tool wear phenomenon and obtaining thus a more complete image concerning the machinability of grey iron used for castings.

Generation of Wear Protective Layer in High Speed Turning of Gray Cast Iron Containing Aluminium and Magnesium

2009 ◽  
Vol 407-408 ◽  
pp. 500-503 ◽  
Author(s):  
Satoshi Furuya ◽  
Nobuaki Ozoe ◽  
Yasuo Yamane
Keyword(s):  
Cast Iron ◽  
Tool Wear ◽  
High Speed ◽  
Gray Cast Iron ◽  
Cutting Speed ◽  
Protective Layer ◽  
Gray Cast ◽  
Nitride Ceramics ◽  
Tool Surface ◽  
Coated Carbide

This paper focuses on the influence of difference of tool materials on generation of wear protective layer when turning gray cast iron containing Al and Mg. In this experiment, the gray cast iron to which small quantities of Al and Mg was added were cut with cermet, P grade carbide (P10), silicon nitride ceramics (Si3N4), titanium nitride (TiN) coated carbide and K grade carbide (K10) at high speed. In turning gray cast iron containing Al and Mg with cermet, the tool wear was significantly reduced compared to that resulting from the cutting of conventional gray cast iron. Further, the protective layer consisting of nonmetallic inclusions in the work material was formed on the tool surface. In addition to cermet, this layer was formed on tool surface of Si3N4 and TiN coated carbide. The elements of Al and Mg added to the work materials were detected in the layers formed on these tool surfaces as well as cermet. The inhibiting effect on tool wear was also caused when turning with P10. However, P10 had much greater wear than cermet. On the other hand, in the case of turning with K10, the effect reducing wear with the addition of Al and Mg was not caused. The wear increased as cutting speed increased regardless of work materials.

scholarly journals High Speed Cutting of Gray Cast Iron and Steel with Al2O3-TiC Ceramics Tools.

1992 ◽  
Vol 39 (11) ◽  
pp. 1028-1032
Author(s):  
Toshiyuki Takahashi ◽  
Yuji Katsumura ◽  
Hirotaka Kiso ◽  
Hisashi Suzuki
Keyword(s):  
Cast Iron ◽  
High Speed ◽  
Gray Cast Iron ◽  
Gray Cast ◽  
Iron And Steel ◽  
High Speed Cutting

Surface Turbulence at Flow of Gray Cast Iron

2010 ◽  
Vol 457 ◽  
pp. 422-427 ◽  
Author(s):  
Attila Diószegi ◽  
Tobias Björklind ◽  
Zoltán Diószegi
Keyword(s):  
Cast Iron ◽  
High Speed ◽  
Gray Cast Iron ◽  
Liquid Surface ◽  
Gray Cast ◽  
Average Flow Velocity ◽  
Mould Filling ◽  
Surface Turbulence ◽  
Different Levels ◽  
Absorption Of Hydrogen

Gray cast iron has been investigated with respect to surface turbulence during mould filling. Different levels of flow velocities have been provoked in a vertically parted sand mould. The thermal resistant transparent front side of the mould permitted the observation of the flow pattern due to high speed camera registration. The registered frames including the liquid surface were investigated using image analyses. The results show good correlation between the average flow velocity and the liquid iron surface extension. Consequently it has been demonstrated that an increased absorption of hydrogen and nitrogen during mould filling is dependent on the level of liquid surface turbulence.

Diffusion Study of Alumina Gray Cast Iron Pair

2010 ◽  
Vol 660-661 ◽  
pp. 739-745 ◽  
Author(s):  
Karolina Pereira Santos Tonello ◽  
Vânia Trombini Hernandes ◽  
Ana Helena A. Bressiani ◽  
José Carlos Bressiani
Keyword(s):  
Cast Iron ◽  
High Speed ◽  
Gray Cast Iron ◽  
Chemical Properties ◽  
Gray Cast ◽  
Wear Rates ◽  
High Speed Cutting ◽  
Alumina Composite ◽  
Alumina Composites ◽  
Cutting Processes

Specific properties of structural ceramics such as their mechanical and thermal stability permit their use in high-speed cutting processes that involve deep cuts and low wear rates. The process by which wear occurs in tribological contacts is complex and cannot be explained by one simple wear mechanism. The contribution of different mechanisms to the total wear of a component is related to the mechanical and chemical properties of both the materials and the contact interface. In this investigation, diffusion tests were carried out to determine the influence of chemical interactions between alumina composite and gray cast iron, without the interference of mechanical wear mechanisms. These tests were carried out at 1100°C using static couples. The tests did not generate a strong metal–ceramic interface, indicating that the alumina composites were chemically stable under the test conditions.

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