Welding Technology in the Manufacture, Repair, and Restoration of Large Castings Made of High-Manganese Steel

Давыдов, А. Д.; Broido, V. L.

doi:10.1007/978-3-030-85233-7_93

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…The most famous wear-resistant steel with high wear resistance under friction with pressure and impacts is 110Mn13L steel (Hadfield steel), which can increase hardness, and, consequently, wear resistance with an increase in the degree of plastic deformation [2]. At the same time, as practice shows, the teeth of buckets of excavators made of steel 110Mn13L, in operation has insufficient wear resistance [3].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Microstructure Quality on the Efficiency of Bucket Teeth of Career Excavators

Galata

Ermakov

Kancev

et al. 2023

KEM

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The mining industry is the main base of the country's industrial potential, a significant part of which is the development and production of various rocks and minerals. The main type of machines used in open pit mining are powerful excavators, who make up the bulk of the equipment fleet of mining enterprises. Operating enterprises incur large losses due to wear and destruction of excavator bucket teeth, therefore, improving the quality of the tooth material is an urgent task. This article discusses the influence of the casting quality, including the cast structure of the material, on the performance of the excavator teeth. The object of research was the teeth of the buckets of Cat-391 and VOLVO-350 mining excavators made of 30Cr2Si2MnMo steel after long-term operation. The actual condition of the bucket teeth of mining excavators after operation was examined and microstructure, hardness and worn surfaces of the teeth was analyzed. The study showed that the efficiency of excavator bucket teeth is determined by the level of unevenness of the microstructure and microhardness and the presence of defects, hot and cold cracks. It has been established that the main reason for the accelerated failure of the teeth of open-pit excavator buckets is the superposition of various microstructural defects connected with unevenness of the metal microstructure and imperfection of the casting process. Main directions of increasing efficiency of mining excavators’ teeth bucket were identified.

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Section: Introductionmentioning

confidence: 99%

The Influence of Microstructure Quality on the Efficiency of Bucket Teeth of Career Excavators

Galata

Ermakov

Kancev

et al. 2023

KEM

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“…This method was used for comparative evaluation of two wear-resistant steels on the basis of stable high-manganese austenite-110G13L and metastable austenitic manganese steel -110G6L. Mechanisms of strain hardening of these steels have been investigated earlier [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Engineering Method for Analysis of the Ability to Strain-Hardening of Steels

Филиппов

Korzunova

Sharapova

2020

SSP

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The strain-hardening ability has been estimated using a methodologically simple engineering criterion. A simple engineering method estimates the ability of metals and alloys to strain-hardening by the hardness increase determining. The Rockwell hardness has been measured at the bottom of the indentation cup of the Brinell press indenter. The strain-hardening tendency is investigated by the “two hardness-measuring instruments” method for two austenitic manganese steels, 110G13L and 110G6L, with different austenite stability to strain martensitic transformation. This hardness estimating method can be applied without making special samples and using deforming equipment.

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Selected properties of X120Mn12 steel welded joints by means of the plasma-MAG hybrid method

Skowrońska,

Szulc,

Morek

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part L:

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The article describes properties of welds made of high wear resistance X120Mn12 steel obtained by the hybrid PTA-MAG (plasma transferred arc – metal active gas) method. The specimens were 8 mm thick rectangular (200 mm × 350 mm) sheets metal. The analyzed butt welds were made with the parameters selected according to the criterion of smallest cross-sectional area of welds and the narrowest HAZ (heat affected zone). The outcome of metallographic tests of weld, HAZ and parent material, hardness distribution and XRD (X-ray diffraction) patterns of selected areas are presented. The IIT (Instrumented Indentation Test) method was used to describe the distribution of mechanical properties shaped by thermal cycle annealing of the welding process. The investigation shows that the application of the PTA-MAG hybrid heat source for welding manganese steel enables the use of the filler material ER307 (AWS-A5.9). The hybrid PTA-MAG welding system has the relatively high potential to be an efficient alternative to welding standard processes for X120Mn12 steel due to the HAZ overheating limitation. The zone of high-risk weld cracking is the part of the HAZ close to the fusion area that has been reheated during weldment formation. Heat input about 0.6 kJ/mm is needed to provide full deep penetration butt weld without defects and with a vapor capillary of wide enough to cover the weld gap. The increase of hardness in the welded joint is smooth distributed and going up to 10% compared to the base material. The width of HAZ was <1 mm. Intensive carbides precipitation in HAZ has been avoided successfully.

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Welding Technology in the Manufacture, Repair, and Restoration of Large Castings Made of High-Manganese Steel

Cited by 3 publications

References 9 publications

The Influence of Microstructure Quality on the Efficiency of Bucket Teeth of Career Excavators

The Influence of Microstructure Quality on the Efficiency of Bucket Teeth of Career Excavators

Engineering Method for Analysis of the Ability to Strain-Hardening of Steels

Selected properties of X120Mn12 steel welded joints by means of the plasma-MAG hybrid method

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