摘要:
A magnetic shielding steel sheet which contains C in an amount of 0.15 wt % or less, has a thickness of 0.05 mm to 0.5 mm, and a non-hysteresis magnetic permeability of 7500 or more.
摘要:
A steel sheet for a heat shrink band which has a chemical composition in mass %: C:0.005 % or less, Si: 0.5 to 4 % , Mn: 2 % or less, P: 0.2 % or less, S: 0.04 % or less, sol.Al: 0.2 % or less, N: 0.01 % or less, B: 0.0003 to 0.004 %, O: 0.005 % or less, Sb: 0.002 to 0.1 % and balance: substantially Fe; and a steel sheet for a heat shrink band which further satisfies that a ratio of a B content to a N content, B/N, is 0.2 to 1. The steel sheet allows the production of a heat shrink band having high strength and also satisfactory magnetic shielding property.
摘要:
A steel sheet excellent in geomagnetism shielding property, which has a chemical composition in wt %: C: less than 0.1 %, Si: less than 0.2 %, Mn: 0.4 to 2 %, P: 0.1 % or less, S: 0.03 % or less, sol. Al: 0.01 % or less, N: 0.003 to 0.02 % and balance: substantially Fe, and has a non-hysteresis magnetic permeability of 5000 or higher.
摘要:
A thin alloy sheet having a low thermal expansion which has a substantial chemical composition in mass %: Ni: 35.0 to 37.0 %, Mn: 0.01 to 0.09 %, Si: 0.01 to 0.04 %, Al: 0.01 to 0.04 % and balance: Fe, with the proviso that Mn/S is 20 to 300 and Mn + Si + Al ≤ 0.15 %, and has an average thermal expansion coefficient in the range of 20 to 100˚C of 1.0 X 10 −6 /K or less. The thin alloy sheet is free from the occurrence of a crack, a fracture or a flaw and exhibits good etching characteristics and dimensional precision in the manufacture of a shadow mask.
摘要:
A steel sheet for a heat shrink band having a non-hysterisis magnetic permeability in a magnetic field of 0.35 Oe of 15000 or more and a yield stress of 24 kgf/mm or greater. The steel sheet for a heat shrink band can be produced by a method comprising a step of subjecting a steel containing C in an amount of 0.01 to 0.15 wt % to a hot or cold rolling, a step of annealing the rolled product at 650 to 900 DEG C, and subjecting the annealed product to temper rolling at a draft of 1.5 % or less. The steel sheet for a heat shrink band can be used for producing a cathode-ray tube which is almost free from the occurrence of color slippage and does not suffer the deformation of its panel face.
摘要翻译:本发明的热收缩带用钢板在0.35Oe时的磁滞磁导率为15000以上,屈服应力为24kgf / mm 2以上。 钢板可以通过以下方法制造:包括以下步骤:热轧和/或冷轧含有0.01至0.15重量%C的钢; 在650〜900℃的温度下对轧制钢板进行退火; 以1.5%以下的压下率对退火后的钢板进行回火处理。 由钢板制成的CRT导致极少的颜色偏差,并且实际上没有面板表面的变形。
摘要:
A method for producing a steel sheet for a tension mask which comprises the steps of hot rolling a steel having the chemical composition in wt.%: C: less than 0.1 %, Si: 0.05 % or less, Mn: 0.4 to 2 %, P: 0.03 % or less, S: 0.03 % or less, sol.Al: 0.01 % or less, N: 0.01 % or more, balance: substantially Fe, cold rolling the hot rolled steel sheet followed by annealing, and subjecting the resulting steel sheet to a secondary cold rolling at a reduction in thickness of 35 % or more. A steel sheet produced by the use of the above method exhibits excellent resistance to creep in blackening processing and also has an excellent magnetic shielding property such that it exhibits a non-hysteresis magnetic permeability of 3400 or more at a DC bias magnetic field of 0.35 Oe, and thus causes no color divergence when used for a tension mask.