PSI - Issue 59

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect StructuralIntegrity Procedia 00 (2023) 000 – 000 Available online at www.sciencedirect.com ScienceDirect StructuralIntegrity Procedia 00 (2023) 000 – 000

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 59 (2024) 391–398

© 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of DMDP 2023 Organizers © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of DMDP 2023 Organizers Keywords: cracks, electroslag welding, heat-affected zone , mechanical properties. Abstract This paper describes the practical experience of applying the developed technology in repairing through cracks in rotary kiln tires with cross- sections (repaired): 900×355; 900×475 mm. It is shown that replacement of the destroyed cement kiln band Ø5×185m with a new one by cutting the kiln body and dismantling the supporting block leads to a loss of clinker reaching 20...85 thousand tons. The repair of a through crack in the band directly on the furnace body using automatic two-arc submerged-arc welding can reduce these losses to 19...33 thousand tons. At repair of similar crack with use of the developed method losses of production made 0,8...1,3 thousand tons of clinker, i.e. in ≥14 times less, than with application of automatic two -arc submerged-arc welding, and the general time of repair work performance was reduced in 1,5...3 times. On the basis of statistical data on accident-free service life of the bandages repaired with application of the developed technology, it is established that long-term strength of welded joints under conditions of asymmetric alternating loading (-40...+11 MPa) is not less than 10 7 cycles. © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of DMDP 2023 Organizers Keywords: cracks, electroslag welding, heat-affected zone , mechanical properties. VII International Conference “In -service Damage of Materials: Diagnostics and Prediction ” (DMDP 2023) Repair of through cracks in large-thickness parts on site by multi pass electroslag welding Kozulin S. a , Lychko I. a , Reznik S. a , Maydanchuk T. a, *, Lukianchenko E. a a E.О. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11 Kazimir Malevich Str., 03150, Kyiv, Ukraine Abstract This paper describes the practical experience of applying the developed technology in repairing through cracks in rotary kiln tires with cross- sections (repaired): 900×355; 900×475 mm. It is shown that replacement of the destroyed cement kiln band Ø5×185m with a new one by cutting the kiln body and dismantling the supporting block leads to a loss of clinker reaching 20...85 thousand tons. The repair of a through crack in the band directly on the furnace body using automatic two-arc submerged-arc welding can reduce these losses to 19...33 thousand tons. At repair of similar crack with use of the developed method losses of production made 0,8...1,3 thousand tons of clinker, i.e. in ≥14 times less, than with application of automatic two -arc submerged-arc welding, and the general time of repair work performance was reduced in 1,5...3 times. On the basis of statistical data on accident-free service life of the bandages repaired with application of the developed technology, it is established that long-term strength of welded joints under conditions of asymmetric alternating loading (-40...+11 MPa) is not less than 10 7 cycles. VII International Conference “In -service Damage of Materials: Diagnostics and Prediction ” (DMDP 2023) Repair of through cracks in large-thickness parts on site by multi pass electroslag welding Kozulin S. a , Lychko I. a , Reznik S. a , Maydanchuk T. a, *, Lukianchenko E. a a E.О. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine, 11 Kazimir Malevich Str., 03150, Kyiv, Ukraine

* Corresponding author. Tel.: +38-096-194-34-33; fax: +38-044-205-23-98. E-mail address: pwi_37@ukr.net * Corresponding author. Tel.: +38-096-194-34-33; fax: +38-044-205-23-98. E-mail address: pwi_37@ukr.net

2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of DMDP 2023 Organizers 2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of DMDP 2023 Organizers

2452-3216 © 2024 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of DMDP 2023 Organizers 10.1016/j.prostr.2024.04.056