本文着重分析了黑白显象管早期失效的原因。研究发现,管内真空因素不良和阴极温度过高,是黑白显象管中常见的通病。通过调整阴极温度和采用“联合排气工艺”,黑白显象管的平均寿命提高了四倍以上。因此,早期失效的问题基本得到解决。 This article focuses on the analysis of the causes of early failure of CRT. The study found that poor vacuum tube and cathode temperature is too high, is common in black and white picture tube common problem. By adjusting the cathode temperature and using a “combined exhaust process,” the average life of a monochrome CRT was more than four times higher. Therefore, the problem of early failure basically solved.