Characteristics of extrude honed SG iron internal primitives
Characteristics of extrude honed SG iron internal primitives
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DOI：
10.1016/j.jmatprotec.2004.07.100
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发表时间：
2005-08-20
影响因子：
6.3
通讯作者：
Krishnamurthy, R
中科院分区：
文献类型：
--
作者：
Raju, HP;Narayanasamy, K;Krishnamurthy, R
由于实现所需功能的严格参数要求，生成和精加工工程曲面的重要性日益增加。这需要（1）生成具有所需纹理的表面，以及（2）评估生成的表面以确保其是否满足预期目的。已经研究了几种新技术来克服传统表面精加工方法的加工限制。大多数情况下采用研磨工艺来实现所需的表面光洁度和纹理。然而，刚性研磨过程会引起热损伤。因此，可以安全地使用研磨等柔性研磨。另一种可用于内模精加工的灵活工艺是挤压珩磨。在本研究中，挤压珩磨SG铸铁（600级）已成功地进行了实验室模型的液压驱动的挤压珩磨装置使用选定的聚合物作为磨料载体介质。使用36目尺寸的SiC砂粒作为磨料。根据表面粗糙度、轴承面积分数、不圆度、诱导残余应力和宏观形貌对生成的表面进行评价。结果表明，表面光洁度性能的显着改善。本文详细介绍了相关的插图。(c)2004 Elsevier B.V.保留所有权利。
Importance of generating and finishing engineered surfaces is increasing owing to stringent parametric requirements to achieve desired functionality. This has necessitated (1) generation of surfaces with required texture, and (2) evaluation of generated surface to ensure whether it serves the intended purpose. Several new techniques have been studied to overcome the processing constraints of traditional surface finishing methods. Mostly abrasion processes are adopted for achieving the required surface finish and texture. However rigid abrasive processes induce, thermal damage. Hence flexible abrasion such as lapping can be safely used. Yet another flexible process that can be used for finishing of internal forms is extrude honing. In this study, extrude honing of SG Cast Iron (600grade) has been successfully performed in a laboratory model of hydraulically actuated extrude honing set-up using a select grade of polymer as abrasive carrier medium. SiC grit of 36 mesh size is used as abrasive. Generated surfaces were evaluated in terms of surface roughness, bearing area fraction, out of roundness, induced residual stress and macrography. Results show a significant improvement in surface finish properties. Details are presented in this paper with relevant illustrations. (c) 2004 Elsevier B.V. All rights reserved.