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Failure mode and mechanism of a blast furnace tuyere

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  • NSTL
  • Elsevier
? 2022 Elsevier LtdIn this study, the failure modes of a blast furnace tuyere after service damage were systematically investigated. The high ambient temperature caused grain growth and hardness reduction at the front end of the tuyere. Owing to scraping by gyratory coke in the blast furnace, a perforation formed at the front end of the tuyere, causing damage. Owing to the uneven distribution of components caused by repair welding, cracks occurred in the front coating of the inner wall of the tuyere. The wear of the inner wall of the tuyere was related to the angle and depth of the coal injection gun, and the wear mechanism differed at different positions. Thus, tuyere failure is mainly attributed to the wear of the front end and inner wall. Therefore, it is necessary to develop a coating with excellent high-temperature wear resistance to protect the inner wall and the front end of tuyeres, thereby extending their service life.

Blast furnace tuyereDamageFailure modesPerforationWear mechanism

Zhang J.、Wang R.、Hu R.、Zhang C.、Li G.、Zhang Y.、Wu W.、Lu X.

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State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering Shanghai University

2022

10.1016/j.engfailanal.2022.106294

Engineering failure analysis

Engineering failure analysis

EISCI
ISSN：1350-6307
年,卷(期)：2022.137
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