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纯水水质之优劣,对荧光屏涂复质量是至关重要的,特别是在无杀菌无超滤设备的前提下尤为突出,前一二年我厂由于纯水制备工艺落后,使沉淀合格率低,荧光屏质量不够理想。八六年我厂引进国外部份关键先进设备与国产设备相配套,通过对纯水制备工艺进行改革,对设备改造等一系列的努力解决了纯水问题,使纯水质量显著提高,达到电子工业部一级纯水标准。荧光屏质量大幅度提高,沉淀合格率稳定在98％以上。我厂从NEC公司引进较先进的自动黑白荧光粉沉淀机及P_4—900K荧光粉,在沉淀工艺上虽然控制很严格。但沉淀合格率始终徘
The quality of pure water on the quality of the screen coating is crucial, especially in the absence of sterilization without ultrafiltration equipment under the premise is particularly prominent, one or two years ago I plant due to the backward preparation of pure water, so that the pass rate of precipitation Low, the screen quality is not ideal. In 1986, our factory imported some key advanced equipment and matched with domestic equipment. Through reforming the preparation technology of pure water, we solved the problem of pure water for a series of efforts such as equipment reform, A level of pure water standards at the Ministry of Industry. Fluorescent screen quality increased significantly, the deposition rate of more than 98% stability. I plant from NEC to introduce more advanced automatic black and white phosphor precipitator and P_4-900K phosphor, although the control of the deposition process is very strict. But the precipitation pass rate is always hovering