一、问题的提出自从玻璃钝化二极管在国内问世以来,到现在绝大多数生产厂家,在成型过程中,一直是采用在氮气保护的马福炉内自然降温,时间长达2小时以上.市场上玻封管的价格不断下迭,迫使国内各生产厂家必须尽量降低成本和提高成品率,以适应市场变化的需要.二、分段降温法的工艺步骤1.成型的管子在成型炉内退火后(此时成 First, the question raised Since the glass passivation diodes come out in the country since, until now the vast majority of manufacturers, in the molding process, has been using natural cooling in the muffle furnace nitrogen protection, as long as 2 hours or more. Seal tube prices continue to fall apart, forcing domestic manufacturers must try their best to reduce costs and increase the yield, to meet the changing needs of the market. Second, step by step cooling process steps 1. Molded tube annealed in a forming furnace ( At this point