Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (9): 100-106.doi: 10.3969/j.issn.1000-565X.2013.09.017

• Mechanical Engineering • Previous Articles     Next Articles

Experimental Investigation into Almen Intensity with Glass Beads as Strengthening Medium

Sheng Xiang- fei1 Xia Qin- xiang1 Chen Zhi- chao1 Cheng Xiu- quan2   

  1. 1.School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;2.Department of Aircraft Maintenance Engineering,Guangzhou Civil Aviation College,Guangzhou 510403,Guangdong,China
  • Received:2013-03-22 Revised:2013-04-21 Online:2013-09-25 Published:2013-08-01
  • Contact: 夏琴香(1964-)，女，教授，博士生导师，主要从事塑性加工与模具计算机技术研究． E-mail:meqxxia@scut.edu.cn
  • About author:盛湘飞(1984-)，男，博士生，主要从事塑性加工与模具计算机技术研究．E-mail:sxf030143@163．com
  • Supported by:

    国家自然科学基金委员会与中国民用航空局联合资助项目(61179051)

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Abstract:

 In the investigation,with Glass beads as the strengthening medium,experiments were carried out by means of the programming solution and the orthogonal design,in which the Almen strip was repeatedly used.Then,the effects of the bead diameter,the shot pressure and the distance from the nozzle to the peened surface of the Almen strip on the Almen intensity were analyzed.Finally,the effects of the shot pressure and the bead diameter on the arc height,the Almen intensity and the saturation time were also discussed.The results show that (1) in the same peening time,the arc height increases approximately linearly with the increase of the shot pressure,and it in-creases rapidly in the former stage but rises slowly in the later stage with the increase of the bead diameter; (2) the Almen intensity increases approximately linearly with the increase of the shot pressure,and it increases with the in-crease of the shot diameter with a singular point at the bead diameter of 0.05mm; (3) the saturation time decreases slowly with the increase of the shot pressure with a larger fluctuation at the bead diameter of 0.05mm; and (4) the saturation time first decreases sharply and then almost keeps unchanged with the increase of the bead diameter.

Key words: shot peening, glass bead, arc height, Almen intensity, orthogonal test

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