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一、前言 荫罩钢带用于制造彩色显象管内的荫罩,起着选色的作用。为保证彩色图象不失真、清晰、艳丽,要求用来制造荫罩的钢带具有良好的光刻腐蚀性能,足够的强度、低的延伸率,并且钢带平整度好、表面质量好、厚度公差小等,因此,对钢带的成份、组织、非金属夹杂物及制造工艺都有严格的要求。日本生产的荫罩钢带按其含碳量可分为三类:普通含碳量(C≤0.1%)、低含碳量(C≤0.03%)及超低含碳量(C≤0.01%)。
I. INTRODUCTION Shadow mask steel strip is used to manufacture shadow mask in color picture tube, which plays the role of color selection. In order to ensure that the color image is not distorted, clear and bright, the strip required for making shadow mask has good lithographic corrosion resistance, sufficient strength and low elongation, good flatness of steel strip, good surface quality, Tolerance and so on, therefore, the composition of the strip, tissue, non-metallic inclusions and manufacturing processes have strict requirements. The shadow mask steel belts produced in Japan can be classified into three categories according to their carbon content: normal carbon content (C≤0.1%), low carbon content (C≤0.03%) and ultra-low carbon content (C≤0.01% ).