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本文首次提出将高梯度磁场设置在谱片之上,使磁力的作用方向与重力相反,制谱片时利用重力减少油样中非铁磁性污染颗粒的沉积,克服普通分析式铁谱仪制谱片时油样中污染颗粒在谱片上的过多沉积,为润滑油污染严重的机械设备的磨损状况监测提供了一种新途径。试验与应用表明上置磁场铁谱原理能有效地减少污染颗粒在谱片上的沉积。 相似文献
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Attention has been focused on how to achieve intelligent automation in ferrographic diagnosis in order to overcome the subjectivity of the diagnosis process. The present paper reports on a technique of characteristic measurement developed on the basis of the VC++ 6.0 programming platform, with characteristic parameters such as area, roundness, and aspect ratio being extracted from images of wear debris based on digital image analysis. However, the extraction of characteristic parameters from a ferrographic image is not the ultimate purpose of ferrographic diagnosis. The wear particles should be classified into several pre‐decision categories and their statistical distribution should also be calculated. The grey relational grade theory is introduced in this paper as a way to recognise wear debris and a new software system has been developed to deal with the problems occurring in the automation of ferrographic diagnosis. It is shown that the identification rules can be used to treat some real wear debris images with generally satisfactory results. 相似文献
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针对传统的铁谱分析方法主要依靠具有丰富经验的专业人员目测,分析结果客观性差、准确性低等不足,进行了计算机辅助铁谱分析方法研究,开发了铁谱图像智能识别系统.该系统能够快速、准确地对磨屑种类、形状以及粒度进行分析与识别,大大提高了分析的效率和准确性.系统现已应用于南京扬子石化公司,经使用达到了预期的目的,取得了良好的效果. 相似文献