涡流技术在钨杆自动检测中的应用

The Application of Eddy Current Technology in Automatic Detection of Tungsten Pin

介绍照明用钨杆的检测基本要求,运用振动上料法和涡流检测"它比"法,研究了涡流技术在钨杆检测中的应用。将检测的合格品与不合格品做成灯芯后进行漏气试验比较,结果表明,该方法有效解决了传统的钨丝圈检测法只能发出缺陷警报,而无法剔除发出警报处的缺陷产品的问题,有效保证了钨杆与石英玻璃封接的质量,为制造高光效、长寿命的照明产品提供了保障。

The specification of short tungsten pin（W pin）for lighting application is introduced.The pin was loaded by vibration unit and inspected by eddy current.After inspection,the pin was sealed into the lamp to check the leakage in order to verify the reliability of the test.Unlike the traditional machine which can only issue warning alarm,current machine is able to pick out the rejected pins,thus guaranteeing high lumen output and long life of light products.