Experimental investigation of residual stresses after heat treatment and grinding processes in the production of ball bearing rings

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Date

2008

Authors

Tekkaya, Ahmet Eeman
Tekkaya, A. Erman
Savas, Turhan
Ozhan, Feridun

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Publisher

Trans Tech Publications Ltd

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Organizational Unit
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

Experimental investigation of residual stresses after heat treatment and grinding processes in the production of ball bearing rings has been carried out. The residual stresses were measured by X-ray diffraction method utilizing chromium radiation, which has an average penetration depth of 5 mu m incident on 100Cr6 (AISI-E52100) ball bearing steel. The process parameters of heat treatment and grinding processes were varied so as to represent the extreme values that can be applied in the respective processes. Hardness and percent retained austenite limit the heat treatment process parameters; while roundness, surface roughness and form the grinding process. Tensile surface residual stresses on the raceway of ball bearing rings changes to compression after grinding in both circumferential and axial directions. In grinding relatively higher compressive stresses were measured in axial direction compared to the circumferential direction. This experimental investigation also showed that the influence of heat treatment process parameters on the magnitude and distribution of residual stresses survived even after grinding process; i.e. heat treatment and grinding processes cannot be evaluated independently in process design for favourable residual stresses.

Description

Tekkaya, A. Erman/0000-0002-5197-2948

Keywords

residual stresses, bearings, heat treatment, grinding

Turkish CoHE Thesis Center URL

Fields of Science

Citation

1

WoS Q

N/A

Scopus Q

Q4

Source

MECASENS 4th International Conference on Stress Evaluation using Neutrons and Synchrotron Radiation -- SEP 24-26, 2007 -- Vienna, AUSTRIA

Volume

571-572

Issue

Start Page

27

End Page

+

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