1前言随着近期中国汽车工业的发展,汽车的产量和品种有了巨大的增加。我厂作为一家年产近60万台变速器的专业厂家,为进一步提高产品质量和降低零件的缺陷率,改变以前那种用金相抽样检测产品硬度的局面,着手研究一种既能百分之百检测产品硬度,又能保证产品不被破坏的检测方法。于是涡流在线检测技术就提到了议事日程上。 1 Introduction With the recent development of China’s automobile industry, there has been a huge increase in the production and variety of vehicles. I plant as an annual output of nearly 600,000 units of specialized transmission manufacturers, in order to further improve product quality and reduce the defect rate of parts, change the previous kind of metallographic sampling test the hardness of the situation, proceed with a study that can detect one hundred percent Hardness, but also to ensure that the product is not damaged detection methods. So eddy current on-line detection technology referred to the agenda.