Development of Coatings for Protection of Blast Furnace Air Tuyeres

Титов, В. Н.; Ternovikh, A. I.; Baranov, P. V.; Sidorova, T. Yu.

doi:10.1007/s11015-021-01174-1

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…The method of optimizing the internal water structure can effectively enhance the front-end heat dissipation capability of the tuyere small sleeve, but due to the harsh environment inside the blast furnace, the surface of the tuyere small sleeve is prone to wear and corrosion, leading to limited optimization effects. On the other hand, the method of surface coating treatment can enhance the wear resistance and anti-melting capacity of the tuyere small sleeve [19,20], but the addition of the coating may affect the thermal conductivity of the tuyere small sleeve, causing it to lose some of its heat dissipation capacity and posing a safety hazard. Currently, further research is needed on how to enhance the wear resistance and anti-melting capacity of the tuyere small sleeve while ensuring its heat dissipation capability and safety.…”

Section: Introductionmentioning

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: Introductionmentioning

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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show abstract

“…That's why at places of strain localization where the temperature is likely to exceed its limit level, there is primarily austenitic transformation and intense quenching further on. The layer substance has martensite texture with no specific needlelike structure since it has been formed under special conditions of overpressure and velocity of transformation that have not been explored yet [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Electromechanical Surfacing Technique

Gerasimova¹

2022

Materials Research Proceedings

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Abstract. The paper considers an electromechanical surfacing technique of parts’ work surfaces. It was found out that depending on strain temperature, rate and degree there were special type structures formed on a surface layer with a phase change (a bright layer), i.e. a hot deformed structure with and without recrystallization and a cold deformed structure. Depending on the original structure and hardening conditions, during surfacing of parts a thickness of this area may achieve 0.3 mm max. Impact of steel electromechanical treatment on the structure and the surface layer was found out. Depending on properties of surfaces being treated it is possible to use plate-like and roller-type tools for electromechanical hardening. It was shown that roller- type tools possessed enhanced durability and enlarged areas of surfaces being treated, though ensured poorer finish of surfaces being treated.

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Analysis of the failure mechanism of a blast furnace tuyere sleeve with protective coating

Huang

Cheng

et al. 2023

Engineering Failure Analysis

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Development of Coatings for Protection of Blast Furnace Air Tuyeres

Cited by 5 publications

References 32 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

Electromechanical Surfacing Technique

Analysis of the failure mechanism of a blast furnace tuyere sleeve with protective coating

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