杜美丝用于灯泡、电子管等的芯柱与软性玻璃密封,起导电作用。杜美丝的表面处理通常涂敷四硼酸盐涂层,以便与玻璃封接时有良好的浸润性能。杜美丝的主要质量问题有发霉;发黑;气泡。前几年,由于对杜美丝发霉,发黑的机理,没有正确的认识,所以,在生产工艺上,不能抓到本质问题,虽然也采取许多措施,但效果甚微。 Du Mei Si used in light bulbs, tubes and other stems and soft glass seal, a conductive role. Dumasi surface treatment is usually coated with tetraborate coating, in order to seal the glass with good wetting properties. Du Mei Si’s main quality problems moldy; black; bubbles. A few years ago, due to the moldy and blackening mechanism of Dumesi, there was no correct understanding. Therefore, we can not grasp the essential problems in the production process. Although many measures have been taken, the effect is very small.