Factors Affecting the Wear Resistance of Forging Tools

Zwierzchowski, M.

doi:10.1515/amm-2017-0240

Cited by 7 publications

(4 citation statements)

References 9 publications

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“…In addition, the process variables of temperature, pressure, velocity, and time were used to predict wear by [10]. Meanwhile, the effects of increased temperature and time on the properties of the surface layer of forging tools were studied by [11].…”

Section: Introductionmentioning

confidence: 99%

Lifetime Analysis of Dies Manufactured by Conventional Processes and Reconditioned by Deposition Welding Operation

Iovanas,

Dumitrascu

2024

Materials

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The refurbishment of dies by the deposition welding of wear areas is an efficient and economical process. The aim of this study was to conduct a comparative analysis of the lifetimes of different types of dies for the manufacturing of wagon wheels. The analyzed dies were manufactured by conventional processes (Type I) and reconditioned through a deposition welding procedure using a dedicated electrode (Type II). The Anderson–Darling test was conducted to analyze the goodness of fit of the lifetime data specific to the die types. The maximum likelihood estimation method (MLE) with a 95% confidence interval (CI) was applied in order to estimate the lifetime distribution parameters. It was found that the lifetimes of type II dies were longer than those of type I dies. The mean time to failure (MTTF) recorded for reconditioned dies was 426 min, while the mean time to failure of dies manufactured by conventional processes was approximatively 253 min. In addition, an accentuated hazard rate for type I dies compared to type II dies was observed. The results of this analysis emphasized the fact that dies can be restored to their initial operating capacity by successfully using deposition welding procedures that confer a high resistance to operational loads. At the same time, the use of these procedures allows for the sustainable development of resources and waste management.

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Section: Introductionmentioning

confidence: 99%

Lifetime Analysis of Dies Manufactured by Conventional Processes and Reconditioned by Deposition Welding Operation

Iovanas,

Dumitrascu

2024

Materials

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“…For many years, researchers [1][2][3][4] in the field of surface engineering have been concerned with modifying the surface layer in order to increase its resistance to fatigue wear, abrasive wear and corrosion. These procedures usually focus on mechanical, heat and also thermo-chemical treatment [5,6]. As the requirements for the quality of the surface layer increase, so does the need to minimize the costs.…”

Section: Introductionmentioning

confidence: 99%

Surface Characteristics and Wear Resistance of 316L Stainless Steel after Different Shot Peening Parameters

Walczak¹

2023

Adv. Sci. Technol. Res. J.

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The study was conducted to evaluate the effect of ZrO 2 -based ceramic beads shot peening on the performance properties of AISI 316L austenitic steel. The results obtained in the roughness and microhardness measurements, the state of the surface layer, and the tribological properties (ball-on-disc) of the specimens after the peening process were compared to the results obtained for the reference specimen. The tests were carried out with varying parameters of pressure (0.3 MPa, 0.4 MPa) and time (30 s, 60 s). The lowest values of COF (µ = 0.576) and wear factor (K = 3.95•10 -4 mm 3 •N -1 •m -1 ) were observed for the surface peened using parameters: 0.4 MPa and 60 s. By increasing the time twice, a much lower wear factor can be achieved unlike when increasing the shot peening by 0.1 MPa. Observations of wear traces indicate that abrasive wear is predominant and the transfer of specimen material by countersample is also observed.

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“…The progressive loss of material of a solid body is defined as wear [9]. It is significantly influenced by the hardness of the surface layer of the die, in consequence the thermal softening of the surface layer does promote wear [10]. The progressive loss of material can be characterized by so-called wear-quantities where a distinction is made between one-, two-and three-dimensional wear-quantities.…”

Section: Introductionmentioning

confidence: 99%

<i>In Situ</i> Wear Measurement of Hot Forging Dies Using Robot Aided Endoscopic Fringe Projection

Middendorf

Rothgänger

Peddinghaus

et al. 2022

KEM

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According to the current state of the art, wear conditions of forging dies are assessed visually in the dismantled state, as there is no measuring procedure available for inline wear measurement of hot forging dies. This paper introduces a handling concept for automated loading and in-situ tool inspection for a hot forging process. Based on an industrial robot and quickchange systems, the process integration of hightemperature grippers and an endoscopic 3D-measurement sensor for the in-situ inspection of hot forging dies is carried out. By adapting the measuring method of fringe projection to an endoscopic design, the measuring system can be navigated into the difficult-to-access geometry of the die and take high-precision 3D-measurements inside. The ambient air heated by the forming process creates an inhomogeneous refractive index field around the measuring system and the hot die, so that the straight beam path required for optical measuring systems cannot be ensured. This can lead to strong deviations in the reconstructed point clouds and the functional geometries derived from them. By means of a compressed air actuator, the measuring system can be protected from the hot tool and dirt as well as the effect of inhomogeneous refractive index can be reduced. With this approach the in-situ wear measurement at highly stressed regions using the example of the mandrel radius and the flash radius will be demonstrated. These functional elements are of particular relevance, as the thermalstress is high and large material flow takes place. For the wear measurement, the functional elements of the tool are examined in detail by fitting geometrical features into the reconstructed point clouds and determining the deviations from a reference geometry. In addition, the measurement data is validated with the aid of a commercially available state-of-the-art measurement system.

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Factors Affecting the Wear Resistance of Forging Tools

Cited by 7 publications

References 9 publications

Lifetime Analysis of Dies Manufactured by Conventional Processes and Reconditioned by Deposition Welding Operation

Lifetime Analysis of Dies Manufactured by Conventional Processes and Reconditioned by Deposition Welding Operation

Surface Characteristics and Wear Resistance of 316L Stainless Steel after Different Shot Peening Parameters

<i>In Situ</i> Wear Measurement of Hot Forging Dies Using Robot Aided Endoscopic Fringe Projection

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