Mechanism of failure of heat exchangers in cement furnaces

Tylkin, M. A.; Богомолов, Б. Н.; Sharkova, A. M.

doi:10.1007/bf01167006

Cited by 1 publication

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“…Specimens are loaded with deadweights [6], the imposed force is 15N. Abrasive is directed to the friction zone by the vanes [7] attached to the cover [3]. The cover is attached with screws to the rig housing [1].…”

Section: Methodsmentioning

confidence: 99%

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Abrasion Resistance of Nickel- and Iron-base Hardfacings

Hejwowski,

Łukasik

2024

Adv. Sci. Technol. Res. J.

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The present study is directed to the problem of hardfacing and restoration of worn industrial equipment. Wear tests were carried out using especially built rig which reproduces working conditions of machinery applied in cement plants. The results of tribological tests on 20 Fe-and Ni-base hardfacings are presented. The effect of hardfacing hardness and chemical composition was evaluated. It was found in SEM examinations that matrix was removed from the zone adjacent to carbides which made them liable to cracking and digging out. The mechanism of matrix removal depended on its hardness and include microcutting and low cycle fatigue. Ni-based hardfacings outperformed Fe-based coatings. The abrasion resistance of the best Ni-base coating, the Stelcar 6 was 38.7 times higher than that of S235JR steel. Eutectics in Ni-base coatings disturb motion of abrasive grains and force them to rotate instead of sliding over hardfacing surface. Ni-based coatings can be considered in hardfacing or reclamation of numerous industrial components applied in cement plants.

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Section: Methodsmentioning

confidence: 99%

“…In cement industry, abrasive-erosive wear is experienced by fans, transport piping, cyclones, clinker cooler grates. Abrasive wear occurs in impact ball mills, crushers, feeders and chain exchangers [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Abrasion Resistance of Nickel- and Iron-base Hardfacings

Hejwowski,

Łukasik

2024

Adv. Sci. Technol. Res. J.

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show abstract

Mechanism of failure of heat exchangers in cement furnaces

Cited by 1 publication

References 0 publications

Abrasion Resistance of Nickel- and Iron-base Hardfacings

Abrasion Resistance of Nickel- and Iron-base Hardfacings

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