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摘要：
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水平V型锥面砧为横向性能有要求的轴类锻件提供了一种拔长锻造方法,通过改变工具形状、控制纤维流向的方法,来提高轴类锻件横向力学性能,改善异向性。本文进行了水平V型锥面砧与上平砧-下V砧拔长矩形截面坯料锻造的对比试验,通过对比两种锻造方法拔长锻件的纵向、横向力学性能,证实了水平V型锥面砧锻造法达到了普通锻造方法难以实现的锻造效果——轴类锻件力学性能的异向性明显改善,即水平V型锥面砧拔长的锻件同部位屈服强度、抗拉强度和延伸率的横向与纵向之比均在1.0附近变化。
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The forging method with horizontal V-shaped anvil can provide technical method for axial forging with transverse mechanical property requiments.Through changing anvil shape and tissue flow direction,the forging method increases transverse mechanical property and improves the anisotropy of mechanical properties of axial forgings.There was a group of contrasting experiments on forging rectangular billet by the forging method with horizontal V-shaped anvil and the forging method with top flat anvil-bottom V type anvil.Through contrasting axial and transverse mechanical properties,special forging effect that conventional forging methods can not lead to is realized. The anisotropy of mechanical properties of axial forgings is improved by the forging method with horizontal V-shaped anvil,and the ratio of axial mechanical properties to transverse mechanical properties of the same position in forgings is about 1.0.
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基金项目：
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国家自然科学基金资助重点项目(59235101)
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作者简介：
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参考文献：
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[1]郭会光,田继红.大型锻造的质量控制和研究方略[J].大型铸锻件,2007,(2):45-46.
[2]王雷刚,黄瑶,刘助柏.大锻件拔长工艺研究进展与展望[J].塑性工程学报,2002,9(2):28-31,48.
[3]刘国晖.大型锻件锻造的关键技术[J].中国机械工程,2004,15(22):2037-2040.
[4]辛向阳,刘方红,邓蜀宁.大锻件锻造方法综述[J].大型铸锻件,2007,(2):43-48,52.
[5]张宇,董本芬,王梅英.大型转子锻件材料对韧性要求的演变[J].理化检验:物理分册,2006,42(3):160-161.
[6]刘助柏,张永军,刘国晖,等.水平V型锥面砧锻造新上艺[P].中国号利.ZL 97101491.4,1998-10-14.
[7]张永军.提高大型轴类锻件横向力学性能的新工艺研究[D],秦皇岛:燕山大学,1997.
[8]刘助拍,朱继武.新拔长理论工艺参数的量值匹配与确定[J].机械工程学报,1994,30(5):83-86.
[9]刘助柏.塑性成形新技术及其力学原理[M].北京:机械工业出版社,1995.
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