FEM modeling of the distortion of blank/case hardened gear blanks due to chemical banding

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2012

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Manufacturing Engineering
(2003)
Opened in 2003 with the aim to graduate experts in the field of machine-production, our Department is among the firsts in our country to offer education in English. The Manufacturing Engineering program focuses on the manufacturing technologies that shape materials from raw materials to final products by means of analytical, experimental and numerical modeling methods. First Manufacturing Engineering Program to be engineered by Müdek, our department aims to graduate creative and innovative Manufacturing Engineers that are knowledgeable in the current technology, and are able to use production resources in an effective and sustainable way that never disregards environmental facts. As the first Department to implement the Cooperative Education Program at Atılım University in coordination with institutions from the industry, the Manufacturing Engineering offers a practice-oriented approach in education with its laboratory infrastructure and research opportunities. The curriculum at our department is supported by current engineering software, and catered to creating engineers equipped to meet the needs of the production industry.

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Abstract

In this study, a FEM process-chain simulation model is presented for the prediction of distortion of blank and case-hardened SAE 5120 (EN 20MnCr5) steel gear blanks. For this purpose, the evolution of the banded microstructure stemming from the continuous casting process was traced by computer simulations of subsequent shape rolling, forging and machining steps. The calculated flow-net was imported into the in-house heat treatment simulation module empowered with the recently developed "Anisotropic Transformation Strain (ATS)" model which enables the inclusion of the effect of banded microstructure on distortion. Then, both blank and case-hardening processes were simulated and verified experimentally. The results indicate good predictions of the dishing directions and dishing-free cutting strategy in both cases; the dishing magnitude is predicted well in blank-hardening simulations while the quality of the prediction is reasonable in case-hardening. Copyright © 2012 ASM International® All rights reserved.

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Keywords

Blank-hardening, Case-hardening, Chemical banding, Distortion, Gear

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2

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Source

Quenching Control and Distortion - Proceedings of the 6th International Quenching and Control of Distortion Conference, Including the 4th International Distortion Engineering Conference -- 6th International Quenching and Control of Distortion Conference: Quenching Control and Distortion, Including the 4th International Distortion Engineering Conference -- 9 September 2012 through 13 September 2012 -- Chicago, IL -- 94565

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Issue

Start Page

465

End Page

476

URI

https://hdl.handle.net/20.500.14411/9329

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Scopus