Composition and Tribological Properties of Hardened Cutting Blades of Tillage Machines under Abrasive Deterioration

Novikov, A. E.; Motorin, Yuri; Lamskova, M. I.; Filimonov, M. I.

doi:10.3103/s1068366618020137

Cited by 23 publications

(6 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The second zone is the transition zone, it is an intermediate part of the working body that connects the working area of the working body and the zone responsible for attaching the working body to the tine of the tillage implement. The third zone is the area of the working body attachment [8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Durability increasing by developing a conceptual model for the chisel tool working bodies rational structuring

Gapich

Motorin²,

Veselova³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

There are three main zones with different functional purposes in any tillage machines working bodies design. The technological process being performed determines the functionality of these zones. The first zone is the working area of the nose part, its main task is to destroy the processed material and to apply the main working body into its layers. The second zone is the transition zone, it is an intermediate part of the working body that connects the working area of the working body and the zone responsible for attaching the working body to the tine of the tillage implement. The third zone is the area of the working body attachment. Depending on the functional purpose, the zones of the working organs perceive different external loads. The paper proposes a stepwise hardening technology, which made it possible to carry out the entire complex of technological operations from one volumetric workpiece heating, which allows to reduce the labor intensity of multi-stage heat treatment and the cost of the working body manufacturing. Technologically, it is as follows, the working bodies’ workpieces are placed in fixing frames with special holes, where their wedge-shaped part is recessed. Analysis and experimental verification showed that the heat reserve accumulated in the main part of the working body when heated in the furnace is sufficient for the bainite transformation to occur during intermittently cyclic cooling of the chisel cutting part.

show abstract

Section: Introductionmentioning

confidence: 99%

Durability increasing by developing a conceptual model for the chisel tool working bodies rational structuring

Gapich

Motorin²,

Veselova³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…Currently, considering the limitation of a single surface engineering technology, composite surface engineering technologies are catching increasing attention. A laser process can replace many traditional process methods because of its high energy density, stable directivity, high efficiency, non-contact and convenient control [8,15], such as laser quenching [16], laser shock hardening [17], laser cladding [18], laser alloying [19], laser ablation [20,21] and so on. For example, after the laser remelting for NiCrCoFeCBSi/WC coating, the hardness increased by 20%-30%, the friction coefficient decreased by over 30% and the wear loss decreased concomitantly [22].…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Structure and Wear Resistance of Ni65-Based Coatings via HVOF Flame Spraying and Its Application to Potato Digging Shovels

Wang

et al. 2022

Coatings

View full text Add to dashboard Cite

To improve the tribological properties of a potato digging shovel (PDS), Ni65-based coatings with rare earth oxides additions were fabricated on 65Mn# steel via High-Velocity Oxygen-Fuel (HVOF) flame spraying, the effect of macroscopic surface shape of PDSs on their wear resistance of PDSs was examined, and finally a kind of PDS with a specific macroscopic surface shape and satisfied wear resistance was obtained. The addition of CeO2 and Y2O3 decreased the defects in coatings, refined the microstructure, made hard phases distributed more uniformly and ultimately improved coating properties. According to the XRD analysis results, the Ni65-based coatings were composed of the matrix phase γ-Ni and hard phases formed by Cr, Fe and Ni with B, C and Si. More Cr7C3 phases were detected in coating B than in coating A, but the phases related to Y and Ce were also not detected because of the low content in both EDS and XRD analyses. Heat treatment and HVOF flame sprayed coatings both increased the hardness of specimens, and coating A (621HV1.0) provided a hardness nearly equivalent to that of the heat treatment specimens (617HV1.0), while coating B provided the highest hardness (664HV1.0). For all specimens, laser surface texturing (LST) structures weakened their corrosion resistance. However, the Ni65-based self-fluxing alloy coatings significantly improved the corrosion resistance of specimens, and coating B provided the best corrosion resistance. SEM images show that the main wear mechanism for worn specimens was abrasive wear, and less wear signs were observed on the surface of coating B. Abrasive wear examinations indicate that specimen BJ had the best wear resistance and, compared with specimen W, the mass loss of specimen BJ decreased by 28.56% and 20.83% at relative sliding speeds of 2.35 m/s and 3.02 m/s, respectively. However, considering the negative effect of LST structures on the corrosion resistance of specimens, the processing techniques of specimen A and specimen B are more applicable to PDSs. The macroscopic surface shapes affected the wear resistance of PDSs and ZF had the lowest mass loss but the highest draught force; comparatively, YS had a better balance on the draught force reduction and wear resistance. Finally, YS with coating B, which decreased the mass loss by more than 27.17%, is recommended in this paper. On the whole, the conclusions in this paper provide a reference for the design of potato digging shovels with lower draught force and better tribological properties.

show abstract

“…Thermocyclic treatment (TCO) of metals and alloys belongs to one of the most effective methods for obtaining the structure of structural steels with a given degree of dispersion [1][2][3]. Its basis is the constant accumulation, from cycle to cycle of heating and cooling, of positive changes in the structure of metals.…”

Section: Introductionmentioning

confidence: 99%

Passive fluxgate control of structural transformations in structural steels during thermal cycling

2019

View full text Add to dashboard Cite

Thermocycler processing (TCO) of metals and alloys belongs to one of the most effective ways to obtain the structure of structural steels with a given degree of dispersion. However, the development of thermocycler processing modes in each case is individual in nature and cannot be mechanically transferred from one material to another. Therefore, it is necessary to consider the structural changes in metals during TCO using examples of steels belonging to different groups so that from the whole variety of processes, dissolution and precipitation of phases, stresses and strains, only those that allow you to obtain a given optimal fine-grained structure are selected. Based on the obtained data, we plotted the dependence of the magnetic field strength Hp on the number of cycles during thermal cycling. A comparative analysis of the obtained results is made and conclusions are drawn on the relationship between the magnetic parameter Hp and structural changes in steels during TCO.

show abstract

Composition and Tribological Properties of Hardened Cutting Blades of Tillage Machines under Abrasive Deterioration

Cited by 23 publications

References 10 publications

Durability increasing by developing a conceptual model for the chisel tool working bodies rational structuring

Durability increasing by developing a conceptual model for the chisel tool working bodies rational structuring

Characterization of the Structure and Wear Resistance of Ni65-Based Coatings via HVOF Flame Spraying and Its Application to Potato Digging Shovels

Passive fluxgate control of structural transformations in structural steels during thermal cycling

Contact Info

Product

Resources

About