Evaluation of Heat Resistance and Thermal Conductivity of Ni–Cr–Al System Layered Coatings

Шморгун, В. Г.; Богданов, А. И.; Taube, Aleksandr O.; Kulevich, V. P.

doi:10.1007/s11015-022-01405-z

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…(3) It is assumed that the physical properties of the materials are fixed, and the thermal conductivity of the materials is constant in the x, y, and z directions. The physical property parameters used in this paper are shown in Table 1, and the physical property parameters of the coating are selected from common surfacing wear-resistant materials in the literature [17,22].…”

Section: Establishment Of a 3d Model Of The Tuyere Small Sleevementioning

confidence: 99%

Optimization Study of Annular Wear-Resistant Layer Structure for Blast Furnace Tuyere

Zhu

Zhang

Zong

et al. 2023

Metals

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A new tuyere small sleeve coating structure that balances the high thermal conductivity of the copper substrate with the high wear resistance of the protective layer was developed in this paper. This structure can achieve a low-carbon blast furnace by reducing the heat loss from the tuyere. The 3D model was established via Solidworks for modeling and Ansys for numerical simulation, the temperature field of the annular wear-resistant layer structure tuyere small sleeve with different widths of the wear-resistant layer was analyzed and compared with the temperature and stress field of traditional tuyere small sleeve. The results show that the design of the annular wear-resistant layer structure of the tuyere small sleeve is more effective. The new annular wear-resistant layer structure for the tuyere small sleeve results in a decrease of 24 K in the average temperature of the wear-resistant coating. The comparison of this structure with tuyere sleeves without wear-resistant coatings shows a 16.7% reduction in heat loss, improves the wear resistance of the tuyere, providing new technological ideas for low-carbon blast furnace production. Compared with the tuyere sleeve completely covered with a wear-resistant coating, the maximum thermal stress of this structure decreased from 624.98 Mpa to 427.99 Mpa, resulting in a reduction of 31.5%, which is beneficial for the service life of the tuyere sleeve. The copper surface temperature of the new tuyere small sleeve is in a safe range when the temperature is below 2273 K.

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Section: Establishment Of a 3d Model Of The Tuyere Small Sleevementioning

confidence: 99%

Optimization Study of Annular Wear-Resistant Layer Structure for Blast Furnace Tuyere

Zhu

Zhang

Zong

et al. 2023

Metals

View full text Add to dashboard Cite

show abstract

“…One of the most promising methods for protecting metals is the creation of intermetallic coatings on the surface of products [7][8][9][10]. Such coatings, with a high level of strength and thermal characteristics, are at the same time as close as possible in properties to the metal substrate on which they are formed.…”

Section: Introductionmentioning

confidence: 99%

Aluminizing of the EP33 alloy by hot-dipping

Kulevich,

Bogdanov,

Shmorgun

2024

J. Phys.: Conf. Ser.

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The features of hot-dip aluminizing of the EP33 alloy were studied and the structure transformation of the resulting coating during high-temperature treatment was investigated. Aluminizing the EP33 alloy leads to the formation of a continuous 120 μm thick coating, consisting of an aluminum matrix with the Cr2Al13 intermetallic compound inclusions and a continuous layer of FeAl3 intermetallic compound along the boundary with the substrate. Heat treatment of the aluminized alloy at 1100 °C ensures the formation of a layered coating structure. The phase composition of the coating from the surface to the substrate changes in the following sequence: FeAl(Ni,Cr,Ti,Mo) → FeAl(Ni,Cr,Ti,Mo)+Ni(Fe,Cr,Al,Ti,Mo) → FeAl(Ni,Cr,Ti,Mo)+Fe(Al,Ni,Cr,Ti,Mo).

show abstract

Evaluation of Heat Resistance and Thermal Conductivity of Ni–Cr–Al System Layered Coatings

Cited by 2 publications

References 6 publications

Optimization Study of Annular Wear-Resistant Layer Structure for Blast Furnace Tuyere

Optimization Study of Annular Wear-Resistant Layer Structure for Blast Furnace Tuyere

Aluminizing of the EP33 alloy by hot-dipping

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