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베어링강 SUJ2의 냉간 단조성 향상을 위한 열처리에 관한 연구A Study on Heat Treatment for Improving Cold Forgeability of a Bearing Steel, SUJ2
- Other Titles
- A Study on Heat Treatment for Improving Cold Forgeability of a Bearing Steel, SUJ2
- Authors
- 김해지
- Issue Date
- 2009
- Publisher
- 한국기계가공학회
- Keywords
- Bearing Steel(베어링강); Heat Treatment(열처리); Cold Forgeability(냉간단조성)
- Citation
- 한국기계가공학회지, v.8, no.1, pp 24 - 30
- Pages
- 7
- Indexed
- KCICANDI
- Journal Title
- 한국기계가공학회지
- Volume
- 8
- Number
- 1
- Start Page
- 24
- End Page
- 30
- ISSN
- 1598-6721
2288-0771
- Abstract
- In this paper, the effect of heat treatment on forgeability is investigated and an improved heat treatment cycle is proposed for the bearing steel, SUJ2. An application example of a bearing inner race cold forging , which has small cracks in the bottom after backward extrusion and piercing, is found from a cold forging industry. The process is evaluated by finite element analysis and several heat treatment cycles are examined in order to propose an improved heat treatment cycle. The effect of heat treatment on material hardness and tool life, dimensional accuracy and forming load is revealed through experiment.
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