针对铝铅合金液电磁搅拌中存在的重金属铅偏聚问题,在常规电磁搅拌方法基础上,利用自行设计的内壁布有直叶片坩埚,对铝铅合金液进行了电磁-叶片搅拌研究,采用多点冷淬方法,得到了叶片布置角度对铝铅合金液内铅分布的影响规律,确定了铅分布均匀的铝铅合金液的电磁-叶片搅拌技术.结果表明：叶片与坩埚径向夹角β决定着铅在坩埚径向上的分布,叶片与坩埚轴向夹角γ决定着铅在坩埚轴向上的分布,当β为35°、γ为25°时,可得到铅在坩埚径向上和轴向上都分布均匀的Al-28%Pb合金液,显著地提高了铸造Al-28%Pb合金材料的性能.
To solve the problem of Pb segregation in electromagnetic stirring of Al-Pb alloy liquid,a specially designed crucible with straight blades on its inner wall was used on the basis of conventional electromagnetic stirring.The research on electromagnetic-blade stirring of Al-Pb alloy liquid was carried out.The effect of blade angles on the distribution of Pb in Al-Pb alloy liquid was obtained by multi-point water quenching method and the electromagnetic-blade stirring technique of Al-Pb alloy liquid with uniform distribution of Pb was determined.The results show that:the radial distribution of Pb in crucible is determined by the angle β between blade and the radial of crucible.The axial distribution of Pb in crucible is determined by the angle γ between blade and the axes of crucible.When β is 35o and γ is 25o,Al28Pb alloy liquid with both radial and axial uniform distribution of Pb can be prepared and the properties of cast Al28Pb alloy are enlarged remarkably.
参考文献
| [1] | 李溪滨,杨慧敏,刘如铁.铝-铅固体自润滑材料[J].润滑与密封,2003(02):52-53,55. |
| [2] | 陈桂云,田冲,杨林,赵九洲,张永昌.喷射成形制备钢/Al-Pb合金轴瓦材料的研究[J].机械工程学报,2002(08):139-142. |
| [3] | 冉广,周敬恩,席生岐,曹利强.Al-Pb-Si-Sn-Cu轴瓦合金的微观结构及特征[J].金属热处理,2004(02):3-6. |
| [4] | 王磊,张少明,石力开,郭宏,李永伟.Al-Pb合金轴瓦带坯的烧结工艺研究[J].稀有金属,2001(03):181-186. |
| [5] | 杨林,董满忠,吴伟,陈桂云,赵九州.喷射成形钢/Al-Pb轴瓦合金复合板材的组织及耐磨性[J].铸造,2005(03):279-281. |
| [6] | 贺会军,李永伟,朱学新,郭宏,徐骏,张少明,石力开.双辊连续铸轧Al-Pb系轴瓦合金带材的技术研究[J].稀有金属,2000(04):244-246. |
| [7] | J. Z. Zhao;S. Drees;L. Ratke .Strip casting of Al-Pb alloys- a numerical analysis[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1/2):262-269. |
| [8] | 贾征,李军文,宋生海,周岐.超声波处理对Al-Pb合金铸锭偏析及性能的影响[J].铸造工程,2010(03):22-25. |
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