Receiving Wear-Resistance Coverings Additives of Nanoparticles of Refractory Metals at a Laser Cladding

Murzakov, M A; Petrovskiy, V N; Bykovskiy, D P; Andreev, Andrey; Birukov, V P; Markushov, Y V

doi:10.1088/1742-6596/691/1/012009

Cited by 2 publications

(3 citation statements)

References 8 publications

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“…The most common cause of classifier shutdown is the need to regenerate both the inside of the classifier tank and the spiral therein [7]. The techniques currently employed to protect spiral classifiers against corrosion focused on barrier protection made up of coating layers and protection in the form abrasion-resistant linings [9] applied on the working surfaces of the spirals, wh transport classified grains. There are several materials, in the form of both coating lay and plastic layers, that are able to protect parts of operating devices exposed to eros corrosion.…”

Section: Introductionmentioning

confidence: 99%

Cathodic Protection System of the Spiral Classifier at the KGHM Polska Miedź S.A. Ore Concentration Plant—Case Study of Commissioning and Control of Operating Parameters

Czekajło

Żakowski

2022

Minerals

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The project involved designing, constructing and commissioning a cathodic protection system for a selected spiral classifier operating at the KGHM Polska Miedź S.A. Ore Concentration Plant (O/ZWR). The authors developed a concept and assumptions regarding the corrosion protection of a large industrial device using a cathodic protection system with an external power source. Pre-project studies included conducting a trial polarization of one of the 28 classifiers operating at O/ZWR. The obtained results enabled the determination of the protective current demand required and the selection of a target polarization device, ensuring the flow of current with an intensity that guarantees that the required corrosion protection level will be achieved. The ultimately installed cathodic protection system consisted of an external cathodic protection current source with maximum output parameters of 50V/20A, a power supply system and a polarization anode system. Elements for monitoring corrosion occurring during system operation were installed, which employed reference electrodes of zinc (Zn) and silver chloride (Ag/AgCl) to measure the potential of the structure under cathodic protection. Furthermore, resistive corrosion sensors were installed to measure the steel corrosion rate under polarization conditions, making it possible to assess the effectiveness of the protection. The system will also be equipped with a prototype system for remote monitoring of the operation of the protection system, enabling online observation and analysis of settings and temporary indicators influencing the ongoing corrosion processes.

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Section: Introductionmentioning

confidence: 99%

Cathodic Protection System of the Spiral Classifier at the KGHM Polska Miedź S.A. Ore Concentration Plant—Case Study of Commissioning and Control of Operating Parameters

Czekajło

Żakowski

2022

Minerals

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“…There are many methods of making composite coatings. These are, for example, laser cladding technology [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 11 , 12 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ], traditional surfacing technologies [ 28 , 29 , 30 , 31 ] or laser processing of pre-coat [ 32 , 33 ]. Regardless of the production method used, it is important to obtain a composite microstructure, where the reinforcing phase will be clearly separated from the metal matrix.…”

Section: Introductionmentioning

confidence: 99%

“…The authors showed a 4–6-fold decrease in weight loss along with an increase in concentration of nano-additives of tantalum carbide in mechanical tests. In paper [ 23 , 24 ] the authors focused on production of coatings with additive nanoparticles of refractory metals (WC, TaC) using laser cladding process. Comparative endurance tests for coatings containing nano-WC and nano-TaC were conducted.…”

Section: Introductionmentioning

confidence: 99%

Manufacturing Technology and Properties of Fe/TaC Metal Matrix Composite Coatings Produced on Medium Carbon Steel Using Laser Processing—Preliminary Study on the Single Laser Tracks

Bartkowski

2021

Materials

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The paper presents study results of Fe/TaC metal matrix composite coatings produced on tool steel using laser processing of TaC pre-coat. The Fe/TaC coatings were produced in two steps. First, a pre-coat in the form of a paste based on tantalum carbide and water glass was made and then applied to the steel substrate. In the second step, the TaC pre-coat was remelted with steel substrate using a diode laser beam with a rated power of 3 kW. A constant scanning speed of the laser beam of 3 m/min and three types of laser beam power: 500 W, 800 W and 1100 W were applied. Tests were carried out on three different thicknesses of the TaC pre-coat: 30 µm, 60 µm and 90 µm. The influence of pre-coat thickness and laser beam power on the microstructure, chemical composition and microhardness were analyzed. A possibility of producing coatings with a characteristic composite structure was found, where the iron from the substrate became the matrix, and the introduced tantalum carbides—the reinforcing phase. It was found that too high power of the laser beam leads to complete melting of the introduced primary TaC particles. It was also found that the use of a thicker TaC pre-coat contributes to microhardness increase.

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Receiving Wear-Resistance Coverings Additives of Nanoparticles of Refractory Metals at a Laser Cladding

Cited by 2 publications

References 8 publications

Cathodic Protection System of the Spiral Classifier at the KGHM Polska Miedź S.A. Ore Concentration Plant—Case Study of Commissioning and Control of Operating Parameters

Cathodic Protection System of the Spiral Classifier at the KGHM Polska Miedź S.A. Ore Concentration Plant—Case Study of Commissioning and Control of Operating Parameters

Manufacturing Technology and Properties of Fe/TaC Metal Matrix Composite Coatings Produced on Medium Carbon Steel Using Laser Processing—Preliminary Study on the Single Laser Tracks

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