Improvement of abrasion resistance of production equipment wear parts by hardfacing with flux-cored wires containing boron carbide/metal powder reaction mixtures

• Autorzy: Ivanov Oleksandr , Prysyazhnyuk Pavlo , Lutsak Dmytro , Matviienkiv Oleh , Aulin Vicktor

Identyfikatory

DOI

10.2478/mspe-2020-0026

• Języki publikacji: EN

Abstrakty

EN

In this work was established that serial traditional hardfacing materials based on the Fe-Cr-C system are not effective for improvement of abrasion resistance of elements of equipment for production of bricks, solid fuel briquettes and for restoration of augers, due to the fact that this equipment works at significant specific and cyclic loads. Features of the coarse-grained structure of Fe-Cr-C based coatings leads to intensive abrasive wear. The aim of this study was to increase a durability of that equipment by using of flux cored electrodes with reaction components of Ti, Cr, Mo, B4C and their combinations to provide synthesis, which leads to finegrained structure of refractory borides and carbides and their solid solutions with increased hardness. Structure of the hardfacing coatings were investigated by method of metallography, scanning electron microscopy (SEM), electron backscatter diffraction (BSD) mode and energy dispersive X-ray spectroscopy (EDS). Temperature dependences of equilibrium phase amount of the hardfacing materials were calculated by the CALPHAD technique, using JMatPro software. It was investigated that the offered materials are characterized by higher wear resistance at high specific and cyclic loads in comparison with serial production high-chromium hardfacing materials (Lastek, ESAB, Paton IEW). It was established that the abrasion wear resistance at high specific and cyclic loads depends mostly of formation of the structure of hardfacing material, and not the hardness. Also, using of powders of pure metals and their combination as reaction mixture for FCAW leads to fine structure which contains of refractory borides and carbides and their solid solutions.

Słowa kluczowe

EN

flux cored electrodes; abrasion resistance; refractory borides; solid solutions; high specific loads

• Wydawca: STE GROUP
• Czasopismo: Management Systems in Production Engineering
• Rocznik: 2020
• Tom: nr 3 (28)
• Strony: 178--183
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Ivanov Oleksandr

• Ivano-Frankivsk National Technical University of Oil and Gas Institute of Mechanical Engineering Karpatska St., 15, 76019 Ivano-Frankivsk, Ukraine

autor

Prysyazhnyuk Pavlo

• Ivano-Frankivsk National Technical University of Oil and Gas Institute of Mechanical Engineering Karpatska St., 15, 76019 Ivano-Frankivsk, Ukraine

autor

Lutsak Dmytro

• Ivano-Frankivsk National Technical University of Oil and Gas Institute of Mechanical Engineering Karpatska St., 15, 76019 Ivano-Frankivsk, Ukraine

autor

Matviienkiv Oleh

• Ivano-Frankivsk National Technical University of Oil and Gas Institute of Mechanical Engineering Karpatska St., 15, 76019 Ivano-Frankivsk, Ukraine

autor

Aulin Vicktor

• Central Ukrainian National Technical University Department of Operation and Machine Repair Avenue University, 8, 25006 Kropivnitskiy, Ukraine

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).