Assessment of selected properties of treated tool surfaces examined to increase tool life time

Ťavodová, Miroslava; Hnilica, Richard

doi:10.21062/mft.2020.023

Cited by 7 publications

(7 citation statements)

References 16 publications

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“…The material was strengthened, which over time could not resisted abrasion due to its structure. Such a phenomenon has also been described by the authors [16,25,26]. Significant plastic deformation caused visible wear of the knife blade (Fig.…”

Section: Fig 16 Comparison Of W Hi Weight Loss and Values Of Relative...supporting

confidence: 71%

“…Evaluation of the worn part may show that the primary wear factor is abrasion, but secondary shock is also present. The weld metal chosen must therefore have a very good resistance to abrasive wear, but also a good level of impact resistance [16,17].…”

Section: Fig 4 Interchangeable Insert For the Fixed Arm Of The Harves...mentioning

confidence: 99%

“…The blade material S420MC was used as a standard sample -etalon. The hardness coefficient K Ti for the blade material was calculated from the hardness ratio of the etalon and the abrasive, according to Formula 1.1 [16]:…”

Section: Fig 10 Wearing Blade Of Fixed Knife (A); Wearing Blade Of Mo...mentioning

confidence: 99%

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Analysis of Damaged Delimber Knives and the Possibility of Increasing their Service Life

Ťavodová¹,

Vargová²,

Krilek³

et al. 2022

Manufacturing Technology

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Section: Fig 16 Comparison Of W Hi Weight Loss and Values Of Relative...supporting

confidence: 71%

Section: Fig 4 Interchangeable Insert For the Fixed Arm Of The Harves...mentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Damaged Delimber Knives and the Possibility of Increasing their Service Life

Ťavodová¹,

Vargová²,

Krilek³

et al. 2022

Manufacturing Technology

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“…A significant conclusion is that the strong adhesive bonding of the base, edges and other layers necessary for the safe use of the ski are in direct interaction with the slope. Interaction of the functional surface with the external environment is one of the basic requirements to ensure the functioning of the production [ 27 , 28 ]. Delamination of the base and edges was not demonstrated by SEM image analysis.…”

Section: Resultsmentioning

confidence: 99%

Research on Low-Cycle Fatigue Engineered Hybrid Sandwich Ski Construction

et al. 2022

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This research is aimed at evaluating the effect of low-cycle fatigue on a newly designed hybrid sandwich ski structure to determine the changes that may occur due to cyclic loading and thus affect its use. This is primarily concerned with the fatigue behavior of the tested ski over different time intervals simulating its seasonal use and its effect on the mechanical properties of the ski, i.e., the durability and integrity of the individual layers of the sandwich ski structure. The ski was subjected to 70,000 deflections by moving the crossbar by 60 mm according to the ski deflection calculation in the arch. The results of the cyclic tests of the engineered ski design showed no significant changes in the ski during loading. The average force required to achieve deflection in the first 10,000 cycles was 514.0 4.2 N. Thereafter, a secondary hardening of the structure occurred during relaxation and the force required increased slightly to 543.6 1.7 N. The required force fluctuated slightly during the measurements and in the last series the value was 540.4 0.8 N. Low-cycle fatigue did not have a significant effect on the mechanical properties of the ski; there was no change in shape or visual delamination of the individual layers of the structure. From the cross-section, local delamination was demonstrated by image analysis, especially between the Wood core and the composite layers E-Glass biaxial and Carbon triaxial.

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“…When producing large quantities of parts, it is important to increase the useful life of the tool to achieve production efficiency and minimise costs. Increasing tool life can be achieved by selecting tool steels with sufficient hardness, strength and fatigue resistance, tool surface treatment [27] such as nitriding, carbonitriding or forming, appropriate heat treatment, and reducing friction using suitable lubricants.…”

Section: Introductionmentioning

confidence: 99%

Design of the Production Technology of a Bent Component

Čada,

Pektor

2023

Applied Sciences

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This paper concerns the design of the technology for the production of the part by bending and also the design of the forming tool for a small number of pieces of the produced part. The part in question was the oscillating tool blade to cut soft materials. The aim was to design economically advantageous technology to produce this blade without spot welding from two parts, preferably from one semi-finished product. A suitable material for the part and its new shape were designed. Calculations were made for the smallest recommended internal bending radius, the largest allowable bending radius, the smallest length of the bending arm, and the angle of springback after bending. The component’s shape and a suitable blank were determined. A low-cost bending tool was designed. Dynaform simulations were used to analyse deformation, material thickness after bending, and formability. Analyses showed that the designed bending manufacturing process is safe. The bending tool and then the cutting blade test pieces were produced to verify the tool’s functionality. The procedure for designing the manufacturing process and the forming tool presented in the paper can be applied in cases where it is necessary to design a suitable technology to produce a small number of parts by forming to achieve a minimum cost per piece of the manufactured part.

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Assessment of selected properties of treated tool surfaces examined to increase tool life time

Cited by 7 publications

References 16 publications

Analysis of Damaged Delimber Knives and the Possibility of Increasing their Service Life

Analysis of Damaged Delimber Knives and the Possibility of Increasing their Service Life

Research on Low-Cycle Fatigue Engineered Hybrid Sandwich Ski Construction

Design of the Production Technology of a Bent Component

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