Effect of Die Strength and Work Piece Strength on the Wear of Hot Forging Dies

Lévy, Bernard; Tyne, C. J. Van

doi:10.1007/s11665-014-1292-1

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…Santana-ReyeS Santiago amauRy, Santana-milán Raúl †, guaRdia-Puebla yanS, moRaleS-leSlie JoSé Félix http://dx.doi.org/10.22201/fi.25940732e.2019.20n4.037 v = velocidad de deslizamiento H = dureza del material de la matriz y t = tiempo Se ha modificado el modelo de Archard con la adición de exponentes experimentales: m=1, n=1 y a=2 (Levy & Van, 2015); estos valores son sugeridos por el programa DEFORM TM -2D.…”

Section: Modelo De Desgaste De Archardunclassified

Determinación de los principales factores geométricos que influyen en el desgaste de las matrices de extrusión directa empleadas en la obtención en frío de perfiles de aleaciones de aluminio

Santana-Reyes

Santana-Milán

Puebla

et al. 2019

iit

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Within most employed processes of forming for series productions are extrusion processes. Die wear is one of the major disadvantages of this technological process, so that efforts are made to predict and mitigate its effect on the tool. In this research it simulates by the Finite Element Method, using the DEFORMTM-2D, the process of cold direct extrusion of aluminum alloys 6061-O in a die material AISI D2. It was analyzed geometric parameters of the die such as: the insidence angle, the extrusion ratio, the input radii, the bearing entrance length on the tool, and the friction coefficient; to determine the influence on the tool wear. The Archard's wear model is used to determine the wear intensity in the critical area of tool. The Plackett-Burman fractional factorial design is used to determine the main factors influencing the die wear standing out: the extrusion ratio, friction coefficient and the incidence angle as the main factors that affect the die wear and to a less extent the bearing entrance length at the entrance of the tool of the material and inputs radii. The principal factors have been related from a linear response surface.

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Section: Modelo De Desgaste De Archardunclassified

Determinación de los principales factores geométricos que influyen en el desgaste de las matrices de extrusión directa empleadas en la obtención en frío de perfiles de aleaciones de aluminio

Santana-Reyes

Santana-Milán

Puebla

et al. 2019

iit

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Failure Analysis of Cryogenically Treated and Gas Nitrided Die Steel in Rotating Bending Fatigue

Shinde,

Mutalikdesai,

Jomde

et al. 2024

Materials and Manufacturing

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<div>AISI H13 hot work tool steel is commonly used for applications such as hot forging and hot extrusion in mechanical working operations that face thermal and mechanical stress fluctuations, leading to premature failures. Cryogenic treatment was applied for AISI H13 steel to improve the surface hardness and thereby fatigue resistance. This work involves failure analysis of H13 steel specimens subjected to cryogenic treatment and gas nitriding. The specimens were heated to 1020°C, oil quenched followed by double tempering at 550°C for 2 h, and subsequently, deep cryogenically treated at −185°C in the cryochamber. Gas nitriding was carried out for 24 h at 500°C for 200 μm case depth in NH<sub>3</sub> surroundings. The specimens were subjected to rotating bending fatigue at constant amplitude loading at room temperature. Measurement of surface roughness, hardness, and microstructural analysis indicated improved fatigue life for cryogenically treated specimens as compared to gas nitride, which could be attributed to fine carbide precipitation accountable for the delayed crack initiation and propagation.</div>

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Effect of Die Strength and Work Piece Strength on the Wear of Hot Forging Dies

Cited by 2 publications

References 17 publications

Determinación de los principales factores geométricos que influyen en el desgaste de las matrices de extrusión directa empleadas en la obtención en frío de perfiles de aleaciones de aluminio

Determinación de los principales factores geométricos que influyen en el desgaste de las matrices de extrusión directa empleadas en la obtención en frío de perfiles de aleaciones de aluminio

Failure Analysis of Cryogenically Treated and Gas Nitrided Die Steel in Rotating Bending Fatigue

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