Superficial character fine Fe-Ni kind camouflage plate

Abstract

To provide an Fe-Ni based shadow mask material in which occurrence of roll marks is suppressed and surface characteristics are improved.

Description

technical field [0001] The present invention relates to an Fe-Ni-based shadow mask material having excellent surface properties by suppressing the generation of roll marks during cold rolling. Background technique [0002] Conventionally, Fe-Ni-based materials for shadow masks have been required to have strict quality. For example, since oxygen is a cause of formation of various oxide-based inclusions, reduction control has been performed. The treatment for reducing oxygen is mainly a refining process, which is a process of degassing by vacuum refining or separation and removal of deoxidation products (oxides) generated by adding a deoxidizer to the melt. In addition, in deoxidation refining using a deoxidizer, Al (aluminum) is often used because it has a strong deoxidation ability. [0003] In the deoxidation treatment using a deoxidizer, although the resulting deoxidation product is removed from the melt by slag, etc., as a result, when a very small amount of the deoxidat...

AI Technical Summary

Problems solved by technology

However, when carrying out its specific implementation, since the oxygen concentration reaches about 30ppm or more, the total amount of oxides increases, and the surface texture or etching perforation is not necessarily sufficient.

In addition, in the adjustment of the target inclusion form, it is necessary to limit the total Al content in the Fe-Ni alloy to 0.005% by mass or less, so there is room for improvement in terms of manufacturing cost.

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