Study of Material Filling in the Process of Flashless Hot Forging
碩士 === 國立臺灣大學 === 機械工程研究所 === 81 === The experiment investigates the filling of material to the dies subjected to different loads and the defects occurring in workpiece in the process of flashless closed-die hot forging which is expected to form a near ne...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
1993
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| Online Access: | http://ndltd.ncl.edu.tw/handle/67164876429611698628 |
| Summary: | 碩士 === 國立臺灣大學 === 機械工程研究所 === 81 === The experiment investigates the filling of material to the dies
subjected to different loads and the defects occurring in
workpiece in the process of flashless closed-die hot forging
which is expected to form a near net shape product . It is
found if the shape of the product is axial symmetry . That the
formming process is a combination of extrusion and upsetting ,
which can be approximated by a simple model . Under differernt
forging conditions , the dimension of workpiece is mainly
affected by thermal expansion . The results indicated that the
preform in the finishing dies is not allowed to counterflow ,
which will cause defect in the final products .
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