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Abstract：
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The main structure parameters(including the inflow width of spread cavity ,the outflow width of spread cavity, the height of spread cavity ,the length of the fiducially working land and the flowing position settings of the aperture for the shaping of a product, which influence the distribution of the velocity of metal flow along the working land outflow side) of spread extrusion die has some influences on the value of SDV (SDV-standard deviation of the velocity in axial direction during the extrusion forming, the lower of the value, the steadier of the extrusion progress ). Furthermore, we need to know the salience degree of each parameter. As an example, using the orthogonal experiment method and based on the numerical simulation , this paper classifies these parameters of the spread extrusion die used in the production of a kind of aluminum profile whose trademark is FD-awdd-7 , and makes a conclusion that the parameters which have a significant contribution to the value of SDV include the inflow width of spread cavity , the flowing position settings of the aperture for the shaping of a product, the mutual affection between the inflow width of spread cavity and the outflow width of spread cavity.
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Funds：
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南昌大学“2 1 1”工程资助项目 (1 0 2 - 2 )
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AuthorIntro：
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Reference：
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1 刘静安轻合金挤压工具与模具北京:冶金工业出版社,1990
2 刘方友.宽展模设计探讨轻合金加工技术,1999,(9):20～22
3 宁洪龙,张晓斌,曾萍铝合金型材的宽展挤压轻合金加工技术,1998,(9):25～28
4 黄克坚,包忠诩,周天瑞有限体积数值模拟技术在型材挤压变形规律研究中的应用轻合金加工技术,2003,31(4):29～31
5 黄桂柱有色冶金试验研究方法北京:冶金工业出版社,1986
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