Optimization of the Shot Peening Parameters
Optimization of the Shot Peening Parameters
复制标题
喷丸参数的优化
DOI：
10.1002/3527606580.ch17
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
F. Petit
中科院分区：
文献类型：
--
作者：
F. Petit
喷丸强化过程是材料科学中一个复杂的机理，至今尚未完全了解。尽管历史悠久，对这一过程进行了大量的调查，但它仍然具有许多不确定领域的特点。尽管如此，航空航天和汽车工业多年来一直认为喷丸强化是一种最先进的工艺，可以改善许多零件的表面、成形和寿命。本文研究了一系列工艺参数对渗碳17CrNiMo6钢抛丸强化残余应力分布的影响。研究中使用的喷丸过程是使用USF真空喷丸有限公司提供的商业喷丸装置进行的，使用0.6mm直径的喷丸。研究的工艺参数包括空气压力、质量流量、冲击角、喷嘴与试样之间的距离、暴露时间和喷嘴尺寸。采用Minitab v12软件对统计设计的实验结果进行回归分析。结果表明，空气压力、质量流量、冲击角和暴露时间是影响影响最大的参数。暴露时间和气压之间还发现了进一步重要和显著的相互作用；喷嘴尺寸和质量流量；气压和冲击角；喷嘴尺寸和气压。
The shot peening process is a complicated mechanism in materials science, which is still not fully understood. Despite a long history and a large number of investigations into the process it is still characterized by many areas of uncertainty. Notwithstanding this situation the aerospace and automotive industries have for years considered shot peening as a state-of-the-art process for the surface improvement, forming and life improvement of many parts. The work described in this papcr is a study of the effect of a range of process parameters on the residual stress profiles produced by shot peening coupons of case carburized 17CrNiMo6 steel. The peening process utilized for the research was undertaken using a commercial shot-peening unit supplied by USF Vacu-Blast Limited using 0.6mm diameter shot. The process parameters investigated included air pressure, the mass flow, the impact angle, the distance between the nozzle and the specimen, the exposure time and the nozzle size. Using Minitab v12 software regression analyses were performed on the results obtained from the statistically designed experiments. It was found that the most significant parameters were air pressure, the mass flow, the impact angle and the exposure time. Further important and significant interactions were also detected between exposure time and air pressure; nozzle size and mass flow; air pressure and impact angle; nozzle size and air pressure.