Selection of technological parameters in toughening float glass by ion exchange

The article is devoted to the effective analysis of trench and trenchless pipeline laying technologies. In the course of the work, an analytical review of pipeline assembly was performed, the main technological parameters, the scope of each method, and their advantages and disadvantages were determined. List of considered pipeline laying methods: trenching, horizontal directional drilling, mechanical puncture, hydraulic puncture, microtunneling and punching. The article analyzes the classical trench method and the most widely used trenchless ones: horizontal directional drilling; mechanical puncture; hydraulic puncture; microtunneling; punching. Each of these methods has several advantages and disadvantages. The choice of the optimal method of laying the pipeline depends on many factors: the physical and mechanical properties of soils and hydrogeological conditions, the length and diameter of the pipeline, the presence of other communications, buildings and structures, as well as the budget that customers have. Work time is the last deciding factor. Based on the results of the analysis of pipeline laying technologies and expert survey of construction industry experts, the cost table of each method was compiled, outlining the main characteristics of the technology: length of pipeline, speed of work, scope, cost, and the advantages and disadvantages of each of the considered methods. The conclusions about the use of each of the pipeline laying methods were made. Each of the methods has its advantages and disadvantages, so to choose the method of work it is necessary to conduct a comprehensive assessment of technological parameters, cost, scope and timing of work. The cost of lay-ing the pipeline consists of the following factors: conducting research; selection of diameter and determination of pipeline length; choice of laying method and equipment necessary for the works; selection of equipment, shut-off and control equipment and other materials arranged on the pipeline; terms of performance of works. Taking into account these factors, an estimate is made, which determines the cost of installation of a particular pipeline. After the analysis, we can conclude that among the methods of trenchless laying of pipelines can be identi-fied horizontally directional drilling, it is this method of laying the pipeline will be appropriate to use for our region. The drilling technique allows to carry out pipelines under obstacles, to pull long segments of networks, to repair site damage. This method is universal and can be used in almost any environment. Keywords: trenches, horizontal directional drilling, mechanical puncture, hydraulic piercing, microtunnelling, punching, pipeline.

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To the Question of Designing Baromembrane Combined Type Apparatus

Vestnik Tambovskogo gosudarstvennogo tehnicheskogo universiteta ◽

10.17277/vestnik.2021.03.pp.415-427 ◽

2021 ◽

Vol 27 (3) ◽

pp. 415-427

Author(s):

S. I. Lazarev ◽

O. V. Lomakina ◽

V. E. Bulanov ◽

I. V. Khorokhorina

Keyword(s):

Strength Properties ◽

Technological Parameters ◽

Mechanical Loads ◽

Membrane Apparatus ◽

Strength And Stiffness ◽

Selection Of ◽

Toroidal Shells ◽

Type Apparatus

The paper considers works on methods for calculating design and technological parameters, design of membrane equipment, research of technological features of membrane devices, selection of design schemes, methods for calculating strength and stiffness. A method has been developed for calculating mechanical loads and determining the thickness of plates and toroidal shells of a membrane apparatus of the combined type, which makes it possible to assess the strength properties of apparatus of this class. An example of a calculation, which makes it possible to assess the adequacy of the application of this technique to devices of the combined type, is given.

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The system of components dosing in compound feed

Kormlenie sel'skohozjajstvennyh zhivotnyh i kormoproizvodstvo (Feeding of agricultural animals and feed production) ◽

10.33920/sel-05-2102-06 ◽

2021 ◽

pp. 62-70

Author(s):

S. Yu. Bulatov ◽

V. N. Nechaev ◽

A. G. Sergeev

Keyword(s):

Animal Husbandry ◽

Technological Parameters ◽

Optimal Diet ◽

Limit Values ◽

Feed Production ◽

Predominant Type ◽

Dosing Accuracy ◽

Selection Of ◽

Poultry Farming

Feed production, feeding of animals and poultry is an integral part of animal husbandry and poultry farming. Proper feeding of animals and poultry, which implies the making of an optimal diet with the input of useful premixes and vitamins, can increase their productivity. In Russia the predominant type of feeding is complete feed, which includes compound feed. Regardless of the type of feed in the process of its production, it is necessary to observe the proportions of its components. Dispensers are used for dosing, which depending on the purpose, are divided into mass and volume. We have made an attempt to generalize, systematize and implement the accumulated experience in the form of a scheme that allows us to understand the principle of operation of modern systems for dosing feed components, in which augers are used as feeding mechanisms. The purpose of the research was to build a scheme for selecting parameters and develop a methodology for studying the dosage system of feed components based on it. The results of the analysis of intellectual property protection documents and scientifi c works in the fi eld of dosing have been used to make a scheme for selecting parameters of the feed components dosing system. The results of observations on the operation of the developed system under production conditions and design features have been also taken into account. As a result of the research developed the scheme of selection of the operating parameters of the dosing system, revealed its shortcomings in the form of lower dosing accuracy with the decrease in the mass of the weighed components and the long search settings when composing the new diet. The methods have been developed to address the identifi ed defi ciencies in the determination of limit values of technological parameters.

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Selection of Saccharomyces cerevisiae Starter Strain for Merwah Wine

Fermentation ◽

10.3390/fermentation6020043 ◽

2020 ◽

Vol 6 (2) ◽

pp. 43

Author(s):

Nadine Feghali ◽

Angela Bianco ◽

Giacomo Zara ◽

Edouard Tabet ◽

Chantal Ghanem ◽

...

Keyword(s):

Saccharomyces Cerevisiae ◽

Acetic Acid ◽

Pilot Scale ◽

Molecular Monitoring ◽

Technological Parameters ◽

Sensorial Analysis ◽

Spontaneous Fermentation ◽

Wine Production ◽

Wild Yeasts ◽

Selection Of

In order to select Saccharomyces cerevisiae starter strains for ‘‘Merwah’’ wine production, three strains (M.6.16, M.10.16, and M.4.17) previously isolated from ‘‘Merwah’’ must and characterized at the lab scale were tested in pilot-scale fermentation in a Lebanese winery during the 2019 vintage. The three inoculated musts were compared to that obtained with a spontaneous fermentation. During the fermentations, must samples were taken to evaluate the dominance of the inoculated strains, and at the end of fermentation, the obtained wines were subjected to chemical and sensorial characterization. Molecular monitoring by interdelta analysis revealed that only M.4.17 was able to complete the fermentation and dominate over the wild yeasts. Based on the analysis of principal technological parameters (i.e., residual sugar, fermentative vigor, sulfur production, and acetic acid) and sensorial analysis of the wines obtained, M.4.17 was selected as an adequate starter for the production of typical ‘‘Merwah’’ wine.

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Design of special tools by CAD/CAM systems

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture ◽

10.1243/0954405981515969 ◽

1998 ◽

Vol 212 (5) ◽

pp. 357-371

Author(s):

J C Rico ◽

S Mateos ◽

E Cuesta ◽

C M Suárez

Keyword(s):

Computer Aided Design ◽

Automatic Identification ◽

Automatic Design ◽

Technological Parameters ◽

Optimum Cutting ◽

Cad Cam ◽

The Cost ◽

Aided Design ◽

Cam Systems ◽

Selection Of

This paper presents a program for the automatic design of special tools developed under a CAD/CAM (computer aided design/manufacture) system. In particular, the special tools made with standard components have been considered. Since the design of these types of tools was essentially related to the selection of their components, this paper deals with this aspect, insisting upon the selection of those components directly related to the removal of material: the toolholders or cartridges and the inserts. To select these components it is necessary to take into account not only geometrical or technological rules but also economical ones, owing to the high amount of possible components they can select. Consideration of economical aspects required the formulation of the cost equation associated with the use of these types of tools, characterized because their cutting edges coincide with different cutting velocities. Likewise, consideration of economical aspects allows the selection of the optimum cutting conditions and the cutting components to take place at the same time. Some of the geometrical and technological parameters related to the selection of cutting components are automatically identified by the system through an automatic identification of the workpiece profile.

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Selection of the optimal strengthening regime for a glass using an ion exchange method

Glass and Ceramics ◽

10.1007/bf00701594 ◽

1984 ◽

Vol 41 (2) ◽

pp. 62-66 ◽

Cited By ~ 1

Author(s):

A. M. Butaev

Keyword(s):

Ion Exchange ◽

Exchange Method ◽

Ion Exchange Method ◽

Selection Of

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The Selection of Appropriate Process Parameters of Diffusion Bonding in Heterogeneous Weld of 355J2/AISI 316L Steels

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.737.101 ◽

2017 ◽

Vol 737 ◽

pp. 101-106 ◽

Cited By ~ 4

Author(s):

Jaromír Moravec ◽

Iva Nováková

Keyword(s):

Diffusion Bonding ◽

Strength Properties ◽

Aisi 316L ◽

Fundamental Theory ◽

Technological Parameters ◽

High Alloy ◽

Parameters Selection ◽

316L Steel ◽

Gleeble 3500 ◽

Selection Of

The aim of this article is to present possibilities of diffusion bonding utilization at creation heterogeneous joints where strength properties are taken into account. The joint was implemented to low-alloy structural ferrite-pearlite S355J2 steel and high-alloy austenitic AISI 316L steel. The fundamental theory of diffusion and also design and realisation of experimental creation of diffusion joint in thermal-mechanical simulator Gleeble 3500 is described in the article. Furthermore, procedure of technological parameters selection, when optimisation of strength properties of heterogeneous joint including metallographic evaluation are taken into account, are presented.

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