scholarly journals Metal chips preparation for utilization using advanced reagents

2021 ◽  
Vol 938 (1) ◽  
pp. 012009
Author(s):  
A Samukov ◽  
M Cherkasova ◽  
M Kuksov ◽  
S Dmitriev
Keyword(s):  
Nickel Alloy ◽  
Point Of View ◽  
Cutting Fluid ◽  
Cutting Fluids ◽  
Express Method ◽  
Research Results ◽  
Fluid Removal ◽  
Metal Chips

Abstract The article touches upon the problems of utilization of metal chips containing residues of cutting fluids. The research results are shown for nickel alloy chips washing to remove cutting fluids with the use of various reagents available on the current market. In the course of the research, an original colorimetric express method for assessing the contamination of metal chips was developed, which allows quickly and efficiently establishing the quantitative drop in the cutting fluids content in the chips after the washing. Conclusions are made as to the most effective reagent from the point of view of economics and quality of cutting fluid removal.

Preliminary Experimental Study on Effect of Cutting Fluid on Milled Surface Quality of Iron-Base Superalloy

2014 ◽  
Vol 1077 ◽  
pp. 61-65
Author(s):  
Pei Yan ◽  
Xiang Su ◽  
Gang Wang ◽  
Yi Ming Rong
Keyword(s):  
Experimental Study ◽  
Surface Quality ◽  
High Speed ◽  
Cutting Fluid ◽  
Cutting Fluids ◽  
Machined Surface ◽  
Iron Base ◽  
Milled Surface ◽  
Base Superalloy

As the development of new materials and high speed machining, cutting fluid becomes more and more important because of its functions of cooling, lubrication, corrosion protection and cleaning. The main purposes of cutting fluid are decreasing temperature, reducing friction, extending tool life and improving machining efficiency. In precision machining, high machined surface integrity is the most important. In this paper, a preliminary experimental study on effect of two different cutting fluids on milled surface quality of iron-base superalloy was taken. The surface morphology, roughness, micro hardness and residual stress of the machined surface were investigated. The results showed that the material properties and geometric characteristics of the machined surface were significantly affected by cutting fluid conditions. The effect of cutting fluid on machined surface quality and service performance will become an important research direction. This paper also suggests the main contents of the further research on effect of cutting fluids on machined surface.

THE INFLUE NCE OF CUTTING FLUID CONTAINING ZINC ASPARTATE ON THE WEAR OF CUTTING TOOLS DURING TURNING

Tribologia ◽  
2019 ◽  
Vol 286 (4) ◽  
pp. 53-61
Author(s):  
Monika MADEJ ◽  
Joanna KOWALCZYK ◽  
Dariusz OZIMINA ◽  
Łukasz NOWAKOWSKI ◽  
Andrzej KULCZYCKI
Keyword(s):  
Cutting Tools ◽  
Cutting Fluid ◽  
Cutting Fluids ◽  
Surface Layers ◽  
Zinc Compounds ◽  
Cnc Lathe ◽  
Optical Profilometer ◽  
Technological Quality ◽  
Zinc Aspartate

The paper presents the results of tests of the wear of cutting tools following the process of facing with lubrication with cutting fluids. The tests were carried out on a CNC lathe with the use of two cutting fluids: one based on mineral oil and the other containing zinc aspartate. After machining, the tool wear was measured using a stereoscopic inspection microscope. Observation of surface morphology and identification of elements was performed using a scanning electron microscope with a EDS analyser. Measurements of the geometric structure of the surface of turned elements were performed using an optical profilometer. The non-toxic coolant with zinc aspartate used in the tests resulted in the formation of surface layers enriched with zinc compounds, which directly translated into the improvement of technological quality of the workpiece.

PROCESSING AND CHARACTERIZATION OF ECO-FRIENDLY CUTTING FLUID WITH NANO ADDITIVES FOR TURNING OPERATION

2021 ◽  
pp. 2150057
Author(s):  
M. K. MARICHELVAM ◽  
S. SENTHIL MURUGAN ◽  
K. MAHESWARAN ◽  
D. SHYAMPRASAD VARMA
Keyword(s):  
Boric Acid ◽  
Environmental Sustainability ◽  
Coconut Oil ◽  
Cutting Fluid ◽  
Interface Temperature ◽  
Test Flash ◽  
Cutting Fluids ◽  
Machined Surface ◽  
Turning Operation

Machining quality depends on numerous factors such as speed, feed rate, quality of the materials, the cutting fluids used and so on. The quality of machining components can also be improved by using appropriate cutting fluids. In this study, the three different types of eco-friendly cutting fluids based on coconut oil with nano boric acid particles were synthesized with nanoadditives and characterized during the lathe-turning operation of mild steel. The obtained results were compared between the dry/plain turning (without the cutting fluid) and the turning with the cutting fluids like coconut oil and mineral oil with nanoparticles. In industries, a wide variety of cutting fluids are used; however, most of these cutting fluids are made up of synthetic materials which may affect the environment significantly. Hence, it is essential to develop eco-friendly cutting fluids for environmental sustainability. Here, the cutting fluids were characterized by the morphological study on nanoparticles (400[Formula: see text]nm) and the machined surface using scanning electron microscope (SEM), viscosity test, flash and fire point, surface roughness on machined part, tool tip-workpiece interface temperature, cutting force and flank wear measurement. The results showed that cutting fluids with 0.5% of boric acid had better performance.

scholarly journals Nowy wymiar niepełnosprawności? Rozważania na temat wpływu pojęć na wizerunek osób z różnymi dysfunkcjami

2017 ◽  
Vol 7 ◽  
pp. 63-72
Author(s):  
Dorota Burczyc
Keyword(s):  
Quality Of Life ◽  
People With Disabilities ◽  
Point Of View ◽  
Communication Tools ◽  
Research Results ◽  
Social Advertising ◽  
The University ◽  
The Impact

A new dimension of disability? Reflections on the impact of concepts on the image of people with various dysfunctionsThe work focuses on the impact of concepts on the image of people with disabilities. The article is based on research on interpretation of both “disabled person” and “person with disability” terms. The survey was performed among students at the University of Wroclaw at the Faculty of Philology.The results of this study indicate the scale and scope of ignorance regarding the disability among society. Indicates on the gap caused by the mismatch of language with respect to the constantly changing quality of life of people with disabilities. Research results are important from the point of view of design­ing communication tools, especially social advertising.

scholarly journals Modular structure of inflorescences Hydrangea L.: flowering and pollen quality

2020 ◽  
pp. 108-114
Author(s):  
Д.В. НЕХАЙЧЕНКО
Keyword(s):  
Point Of View ◽  
Modular Structure ◽  
Modular Theory ◽  
Pollen Quality ◽  
Research Results ◽  
Inflorescence Structure

Представлены результаты исследований структуры соцветий гортензии (Hydrangea) с точки зрения модульной теории организации растений, являющейся современным этапом развития гётевской морфологии. Выделено три типа модулей, которые демонстрируют сходство двух физиономически различных соцветий. Установлено, что распускание цветков происходит параллельно во всех модулях в базипетальном порядке, что подтверждает цимозную природу соцветия, характерную для тирса. Анализ качества пыльцы в зависимости от положения цветков в структуре соцветия подтвердил порядок формирования и модульность структуры соцветия. Доказано, что качество пыльцы в цветках, распускающихся первыми и являющихся терминальными для основных модулей, выше, чем в цветках последующих порядков ветвления. Research results of inflorescences structure of Hydrangea from the point of view of the modular theory of plant organization, which is a modern stage in the development of Goethes morphology, are presented. There are three types of modules that demonstrate the similarity of two physiognomically different inflorescences. It has been found that the blooming of flowers occurs in parallel in all the modules in a basipetal order, which confirms the cymose nature of the inflorescence characteristic of thyrse. Analysis of pollen quality depending on the position of flowers in the inflorescence structure confirmed the order of formation and modularity of the inflorescence structure. It is proved that the quality of pollen in flowers that bloom first and are terminal for the main modules is higher than in flowers of subsequent branching orders.

scholarly journals Intrapersonal Proneness to Conflict as a Disposition in Foreign and Russian Psychology

2013 ◽  
Vol 2 (2) ◽  
pp. 134-140
Author(s):  
Igor Krasilnikov ◽  
Keyword(s):  
Personal Characteristic ◽  
Point Of View ◽  
Psychosomatic Disorders ◽  
Physiological Level ◽  
Research Results ◽  
Personal Anxiety ◽  
Emotional Strain

The article views intrapersonal proneness to conflict as a personal disposition. We have made an attempt to interpret proneness to conflict from the point of view of traits theory. The article overviews opinions of Russian psychologists that deal with proneness to conflict from the perspective of consciousness problem. Proneness to conflict is viewed through the idea of a personality that possesses an in-born set of dispositions, which allow it to react in a steady and certain way in different situations. The article presents Gordon Willard Allport’s statement that the quality of personal maturity is opposed to inner proneness to conflict. The article examines the point of view, which states that threat is closely interconnected with experiencing anxiety, emotional strain, and personal anxiety is a thorough personal characteristic, that acts as a predictor of a neurotic conflict and psychosomatic disorders. The article presents Hans Jürgen Eysenck’s research results that prove that emotion of fear is fixed at the physiological level and can be consistent in emotionally unstable persons. We view Karl Leonhard’s personal accentuation concept, which shows that certain personal formations, notwithstanding hereditary determination can be developed under the influence of certain types of psychological traumas or difficult life situations.

The Influence of the Lubrication Method and the Cutting Regime on the Surface Roughness when Milling 7175 Aluminum Alloy

2013 ◽  
Vol 371 ◽  
pp. 28-32 ◽  
Author(s):  
Vlad Diciuc ◽  
Mircea Lobonțiu ◽  
Gheorghe Bran ◽  
Vasile Lazar
Keyword(s):  
Surface Roughness ◽  
Aluminum Alloy ◽  
Feed Rate ◽  
Ecological Impact ◽  
Minimum Quantity Lubrication ◽  
Cutting Fluid ◽  
Cutting Fluids ◽  
Dry Cutting ◽  
Lubrication Conditions

In the current paper, some aspects regarding the quality of the surface machined under different lubrication conditions is being assessed: cutting under a jet of cutting fluid, minimum quantity lubrication cutting, dry cutting. The objective was to assess the results obtained after MQL cutting in comparison with dry cutting and cutting under a jet of cutting fluid. The variables of the cutting regime were the feed rate and the type of milling (climb and conventional). This study has an important ecological impact over the use of cutting fluids.

COMBINATORIAL POLYNOMIALLY COMPUTABLE CHARACTERISTICS OF SUBSTITUTIONS AND THEIR PROPERTIES

2020 ◽  
Vol 7 (2) ◽  
pp. 34-41
Author(s):  
VLADIMIR NIKONOV ◽  
◽  
ANTON ZOBOV ◽  
Keyword(s):  
Mathematical Expectation ◽  
Point Of View ◽  
Small Range ◽  
Computational Point ◽  
Wide Range ◽  
Bijective Function ◽  
The Difference ◽  
Element Base ◽  
Selection Of

The construction and selection of a suitable bijective function, that is, substitution, is now becoming an important applied task, particularly for building block encryption systems. Many articles have suggested using different approaches to determining the quality of substitution, but most of them are highly computationally complex. The solution of this problem will significantly expand the range of methods for constructing and analyzing scheme in information protection systems. The purpose of research is to find easily measurable characteristics of substitutions, allowing to evaluate their quality, and also measures of the proximity of a particular substitutions to a random one, or its distance from it. For this purpose, several characteristics were proposed in this work: difference and polynomial, and their mathematical expectation was found, as well as variance for the difference characteristic. This allows us to make a conclusion about its quality by comparing the result of calculating the characteristic for a particular substitution with the calculated mathematical expectation. From a computational point of view, the thesises of the article are of exceptional interest due to the simplicity of the algorithm for quantifying the quality of bijective function substitutions. By its nature, the operation of calculating the difference characteristic carries out a simple summation of integer terms in a fixed and small range. Such an operation, both in the modern and in the prospective element base, is embedded in the logic of a wide range of functional elements, especially when implementing computational actions in the optical range, or on other carriers related to the field of nanotechnology.

Physical capital stock, technological upgrading and modernisation in Hungary

2005 ◽  
Vol 55 (2) ◽  
pp. 201-221 ◽  
Author(s):  
Andrea Szalavetz
Keyword(s):  
Capital Accumulation ◽  
Physical Capital ◽  
Developed Countries ◽  
Point Of View ◽  
Technology Generation ◽  
Development Policies ◽  
Specific Factors ◽  
Physical Capital Accumulation

This paper discusses the relation between the quality and quantity indicators of physical capital and modernisation. While international academic literature emphasises the role of intangible factors enabling technology generation and absorption rather than that of physical capital accumulation, this paper argues that the quantity and quality of physical capital are important modernisation factors, particularly in the case of small, undercapitalised countries that recently integrated into the world economy. The paper shows that in Hungary, as opposed to developed countries, the technological upgrading of capital assets was not necessarily accompanied by the upgrading of human capital i.e. the thesis of capital skill complementarity did not apply to the first decade of transformation and capital accumulation in Hungary. Finally, the paper shows that there are large differences between the average technological levels of individual industries. The dualism of the Hungarian economy, which is also manifest in terms of differences in the size of individual industries' technological gaps, is a disadvantage from the point of view of competitiveness. The increasing differences in the size of the technological gaps can be explained not only with industry-specific factors, but also with the weakness of technology and regional development policies, as well as with institutional deficiencies.

Flouride and Nitrate Status of Some Ground Waters in Chittor District of Rajasthan State (India)

2018 ◽  
Vol 6 (9) ◽  
pp. 119
Author(s):  
Trapti Sharma ◽  
R. P. Nagar ◽  
R. C. Gaur ◽  
Pooja Gupta ◽  
Charanjit Kaur
Keyword(s):  
Point Of View ◽  
World Health ◽  
Indian Council ◽  
Standard Methods ◽  
Ground Waters ◽  
Drinking Waters ◽  
Health Organization ◽  
Research World ◽  
Drinking Purpose

In Rajasthan state the ground waters of some areas like Ramganj-mandi, Morak, Barmer, Jaisalmer, Chittor and Udaipur etc. are susceptible from drinking point of view.To test the quality of groundwater in Chittor district 14, ground water samples were collected from various places and analyzed for pH, E.C., Fluoride and Nitrate parameters by standard methods (A.P.H. A., Washington, USA, 1995). The study revealed that none of the ground waters was found suitable completely from drinking point of view. Some are having electrical conductivity > 1.4 dS/m, some are having pH >8.5, some area having fluoride >1.5 ppm and some are having nitrate>45 ppm. These are the limits of various parameters permitted by various International authorities like Bureau of Indian Standard, Indian Council of Medical Research,world health Organization etc. for drinking waters. So, it is recommended to the residents of above areas to use water for drinking purpose only after reverse osmosis or adopting suitable method of removing excess of Fluoride and Nitrate for drinking water to avoid unwanted pathogenic diseases harmful for human health.

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