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摘要：
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为了研究工艺参数对楔横轧大断面收缩率二次楔轧制轴类零件心部缺陷的影响规律,进行了楔横轧二次楔轧制试验,得到一系列在不同工艺参数下的轧件中心孔洞面积数据,利用软件MATLAB对数据进行分析处理。揭示出成形角对孔洞面积大小的影响规律:当两个成形角α1,α2中一个较小时,轧件心部孔洞面积随着另一个的增大而明显减小;并且二次楔成形角α2对轧件心部缺陷的影响程度稍大于一次楔成形角α1。研究结果为楔横轧模具、轧机的设计提供了一定的参考。
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In order to study the effect rules of the technological parameters on the central defect of the heavy section shrinkage twice cross wedge rolling axis accessories,the experiment of twice cross wedge rolling was carried out.A series of area data of the centre holes inside the mill bars under different technological parameters was gained.The effect rules of the forming angle on the areas of the centre holes was found out using MATLAB to analyze the data: when one of the two wedge forming angles α1 and α2 is small,the hole area reduces obviously along with the increasing of the other wedge forming angle.The extent of α2 is a little bit larger than that of α1.This result can be a reference for designing the moulds and rolling mills.
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基金项目：
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国家自然科学基金资助项目(50575023,50435010);;
高等学校博士学科点专项科研基金资助项目(20050008024);;
国家科技支撑计划(2006BAF04B03)
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作者简介：
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参考文献：
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[1]胡正寰,张康生,王宝雨,等.楔横轧理论与应用[M].北京:冶金工业出版社,1996.
[2]陈素莹,张康生,杨翠苹,等.楔横轧工艺参数对心部疏松的影响[J].锻压技术,2006,31(4):38-40.
[3]张承鉴,张庆生,崔世强,等.楔横轧译文集[C].长春:吉林工业大学锻造工艺研究所,1982.
[4]王明龙.楔横轧二次楔入轧制力能参数实验研究[D].北京:北京科技大学,2007.
[5]孙允午.统计学:数据的搜集、整理和分析[M].上海:上海财经大学出版社,2006.
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