References
- 금속강도학 이동녕
- 押出し 加工 CPIA Publication 300
- Manufacturing Processes for Engineering Materials Serope Kalpakjian
- Metal Forming Taylan Altan;Soo-Ik Oh;Harold L. Gegel
- Metal Forming Processes and Analysis Aviztur
Transactions of Materials Processing (소성∙가공)
- Volume 6 Issue 3
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- Pages.221-226
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- 1997
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- 1225-696X(pISSN)
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- 2287-6359(eISSN)
A Study of Preventing Chevron Crack in Cold Extrusion
냉간 압출시 Chevron Crack 방지에 대한 고찰
Abstract
Chevron crack in cold extrusion has been studied in view of deformation conditions and material characteristics. There is V formed chevron crack is occasionally occurred in core part of shaft by multistage free extrusion. Although many research results were reported and theoretical analyses were accompanied, in this study we discussed practical method to prevent chevron crack in the field of working conditions and material characteristics. We have found that chevron crack is eliminated under condition of high hydrostatic state in deformation and decreased segregation, refinement of micro structure of materials.