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在生产显象管过程中,为了避免显象管在使用时屏面出现离子班和提高亮度,需要在荧光粉后面蒸一层铝膜,为了蒸铝,工艺上又必须先涂一层有机膜,蒸铝以后再培烧掉,这层有机膜被焙烧后转化为气体。空气置换是用于培烧后置换显象管内气体的设备,是改善生产高质量显象管的一项措施。几年来采用直列式空气置换台,此设备工位少占地面积大,不能满足翻线扩大生产能力后生产需要。
In the process of producing the picture tube, in order to avoid the display tube in the use of ionic class and improve the brightness of the screen, need to steamed a layer of aluminum behind the phosphor, in order to steam the aluminum, the process must first be coated with a layer of organic film , After burning distilled aluminum burn, this layer of organic film is baked into gas. Air replacement is a device used to replace the gas in the imaging tube after burning and burning, which is a measure to improve the production of high quality imaging tube. In recent years, the use of in-line air replacement units, this equipment less occupied a large area, can not meet the production line after the expansion of production capacity needs.