Determination of specific wear rate of steel coated with tungsten carbide using Taguchi technique for textile applications

Chitra, V.; Ramachandran, S.; Anandaraj, V.

doi:10.1016/j.matpr.2021.05.425

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…Карбид вольфрама WC -это широко применяемый материал, который характеризуется относительно высокой температурой плавления (~3050 К), высокой твердостью (18 ГПа при 300 К) и теплопроводностью (~84 Вт/(м•К) при 300 К), а также относительно низким удельным электрическим сопротивлением (4,96-5,3 мкОм•см при 300 К) [1][2][3]. Наиболее широко WC применяется в качестве защитных покрытий для режущих инструментов [2][3][4][5][6]8] или в качестве абразива. Также данный материал перспективен в областях ядерной энергетики [1,8] и электроники [6,7].…”

Section: Introductionunclassified

Influence of non-vacuum electric arc synthesis energy on the product of tungsten ore concentrate processing

Pak,

Kokorina,

Shanenkova

et al. 2024

IZVESTIYA

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Relevance. Caused by the problem of developing methods for obtaining tungsten carbide, especially from tungsten-containing waste. As a solution, a non-vacuum electric arc method is proposed. It is easy to operate and cheap compared to a direct analogue (arc discharge method in inert gas atmosphere). The resulting product can be used as a catalyst carrier in hydrogen production reactions. Aim. To determine the current and the energy entered in the system, necessary to obtain a product with a largest proportion of the hexagonal phase of tungsten carbide WC from tungsten ore concentrate by a non-vacuum electric arc method and investigate a sample with the largest proportion of tungsten carbide phase. Object. Electric arc synthesis in open air from tungsten ore concentrate. Methods. Grinding in a SAMPLE SPEX 8000M ball mill, magnetic separation, non-vacuum electric arc method of synthesis, X-ray phase analysis on a Shimadzu XRD 7000s X-ray diffractometer (λ=1.54060 Å), scanning electron microscopy combined with X-ray fluorescence energy-dispersive analysis based on a TESCAN VEGA 3 microscope SBU with OXFORD X-Max prefix, transmission electron microscopy combined with energy dispersive spectroscopy and selected area electron diffraction based on the JEM-2100F microscope, scanning electron-ion microscopy based on the QUANTA 200 3D microscope. Results. The authors have built the dependence of the phase composition of the product of non-vacuum electric arc synthesis at current strengths from 50 to 220 A. Mass fraction of each of the identified phases in the synthesis product was determined using the reference intensity ratio. The current and the energy entered in the system, which provide the largest proportion of tungsten carbide WC in the synthesis product, are determined. The authors studied the product containing the largest proportion of tungsten carbide WC using scanning and transmission electron microscopy methods.

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Section: Introductionunclassified

Influence of non-vacuum electric arc synthesis energy on the product of tungsten ore concentrate processing

Pak,

Kokorina,

Shanenkova

et al. 2024

IZVESTIYA

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“…Operations research studies in the textile sector are generally in the form of parameter (process) optimization [7][8][9] or multi-criteria decision making [10,11]. Linear optimization studies using mathematical programming or heuristic techniques [12,13] are relatively rare.…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach for Optimum Planning of Bobbin Boilers in Textile Industry

Demir¹,

İNAN²

2022

Tekstil Ve Konfeksiyon

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As in all sectors, fierce competition across the world deeply affects the textile industry. With the addition of new players to the market day by day, the competition is getting more and more intense. In today's world, where the price is determined by the customer, not by the manufacturer, it is an inevitable necessity for companies to reduce their costs in order to survive by maintaining their profitability. This only depends on the efficient use of resources. In this article, a productivity study has been carried out for the bobbin (package) dyeing process, which is one of the important elements of the textile industry. In this study, which was carried out practically in Bursalı Tekstil LTD. ŞTİ, the problem of sequencing the batches waiting to be dyed in dye boilers is discussed. It is necessary to wash the boilers between batches of different colors that are dyed consecutively within certain constraints. In addition, the due dates of these yarn batches must be respected. With the solution methods presented, it is aimed to sequence the batches in a way that requires the least washing and minimizes the total tardiness. Developed integer linear model and iterative greedy based heuristics were first tested with randomly generated test problems. In addition, it has been tested with six months of actual data of the bobbin dyeing department of the relevant company. According to the manual sorting, 17% improvement has been achieved in terms of the number of boiler washes and 13% in terms of total tardiness.

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WC-8Co and WC–5TiC–10Co Cemented Carbides Synthesized by Vacuum-Free Electric Arc Method

et al. 2023

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Determination of specific wear rate of steel coated with tungsten carbide using Taguchi technique for textile applications

Cited by 3 publications

References 8 publications

Influence of non-vacuum electric arc synthesis energy on the product of tungsten ore concentrate processing

Influence of non-vacuum electric arc synthesis energy on the product of tungsten ore concentrate processing

A Novel Approach for Optimum Planning of Bobbin Boilers in Textile Industry

WC-8Co and WC–5TiC–10Co Cemented Carbides Synthesized by Vacuum-Free Electric Arc Method

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