摘要:
In a non-oriented electrical steel sheet, Si: not less than 1.0 mass % nor more than 3.5 mass %, Al: not less than 0.1 mass % nor more than 3.0 mass %, Ti: not less than 0.001 mass % nor more than 0.01 mass %, Bi: not less than 0.001 mass % nor more than 0.01 mass %, and so on are contained. (1) expression described below is satisfied when a Ti content (mass %) is represented as [Ti] and a Bi content (mass %) is represented as [Bi]. [Ti]≦0.8×[Bi]+0.002 (1)
摘要:
A method of production of an ultralow carbon cast slab characterized by adding Ti to molten steel decarburized to a carbon concentration of 0.01 mass % or less, further adding at least one of Ce, La, and Nd, and using an immersion nozzle to inject the above molten steel from a tundish to a casting mold for continuous casting while maintaining a flow rate of Ar gas blown from any location in a range from a tundish upper nozzle to discharge ports of said immersion nozzle at 3 Nl (normal liter)/min or less.
摘要:
Methods for casting an austenitic stainless steel thin strip casting through a continuous caster, e.g., a twin-drum type caster, in which the mold walls move synchronous with the casting to obtain a casting, wherein defects, e.g., salt-and-pepper unevenly glossy defects, on a steel sheet formed after cold rolling or cold forming are prevented. In particular, casting an austenitic stainless steel thin strip casting by regulating a pressing force P of mold wall faces against the casting in the range from more than 1.0 to less than 2.5 t/m, and preferably from more than 1.1 to not more than 1.6 t/m. The continuous caster used may be a twin-drum type continuous caster, with a drum radius R(m) and a pressing force P(t/m) of mold wall faces satisfying the relation 0.5≦(√{square root over (R)})×P≦2.0, and preferably 0.8≦(√{square root over (R)})×P≦1.2.
摘要翻译:通过连续铸造机铸造奥氏体不锈钢薄带铸造方法,例如双辊式铸造机,其中模具壁与铸件同步移动以获得铸件,其中缺陷例如盐和胡椒不均匀 防止了在冷轧或冷成型后形成的钢板上的光泽缺陷。 特别地,通过将模具壁面的压力P调节在大于1.0至小于2.5t / m 2,优选大于1.1至不大于1.6的范围内,铸造奥氏体不锈钢薄带铸件 t / m。 所使用的连续脚轮可以是双鼓式连续脚轮,其鼓半径R(m)和模具壁面的按压力P(t / m)满足关系0.5 <=(√{平方根超过(R )xP <= 2.0,优选0.8 <=(√{平方根超过(R)xP <= 1.2。
摘要:
A multilayer printed wiring board and a method of manufacturing the board are provided. The board has a printed wiring incorporating metal powder consisting of fine grains and a layer of insulation material which is adhesive when uncured. The fine grains of the metal powder are securely fixed to the layer of insulation material so as to strengthen the bond between the printed wiring and the layer of insulation material. Alternatively, the layer of insulation material incorporates a layer of glass powder to enhance the insulation thereof. In this case, the layer of glass powder is made by evenly spreading glass powder on a first coat of uncured adhesive insulation material. The layer of glass powder is covered by a second coat of insulation material after the first coat of insulation material is cured so that the layer of glass powder is sandwiched between the two coats of insulation material. The metal powder is evenly spread on a layer of insulation material or the second coat of insulation material while the insulation material is uncured and adhesive. After the insulation material is cured, the surface of the insulation material covered with metal powder is copper-plated and is etched to form a printed wiring incorporating the metal powder.
摘要:
A nonoriented electrical steel sheet excellent in core loss comprising copper sulfides with a sphere-equivalent radius of 100 nm or less, wherein the number density of the copper sulfides is less than 1×1010 [inclusions/mm3]. Preferably, the percentage of the number of copper sulfides with a (major axis)/(minor axis) ratio of more than 2 per total number of copper sulfides is 30% or less. The steel preferably further comprises Cu of 0.5 mass % or less and REM of 0.0005% or more and 0.03% or less, wherein the following expression (1) or expressions (1) and (2) are met: [REM]×[Cu]3≧7.5×10−11 (1), ([REM]−0.003)0.1×[Cu]2≦1.25×10−4 (2).
摘要翻译:核心损失优异的非取向电工钢板,其包含球半径为100nm以下的硫化铜,其中硫化铜的数量密度小于1×10 10 [夹杂物/ mm 3]。 优选地,每个硫化铜总数的(长轴)/(短轴)比大于2的硫化铜的数量的百分比为30%以下。 钢优选还含有0.5质量%以下的Cu和0.0005%以上且0.03%以下的REM,其中满足以下表达式(1)或表达式(1)和(2):[REM] x [Cu ] 3> = 7.5×10-11(1),([REM] -0.003)0.1x [Cu] 2 <= 1.25×10-4(2)。
摘要:
A rapidly-solidified non-oriented electrical steel sheet having high magnetic flux density and low core loss is provided.The method of producing the non-oriented electrical steel sheet excellent in magnetic properties comprises casting a steel strip by using a traveling cooling roll surface(s) to solidify a steel melt of a prescribed chemical composition, which melt contains one or both of REM and Ca at a total content of 0.0020 to 0.01% and is cast in an atmosphere of Ar, He or a mixture thereof.
摘要:
Non-oriented electrical steel sheet superior in core loss characterized by containing, by mass %, C: 0.01% or less, Si: 0.1% to 7.0%, Al: 0.1% to 3.0%, Mn: 0.1% to 2.0%, N: 0.005% or less, Ti: 0.02% or less, REM: 0.05% or less, S: 0.005% or less, O: 0.005% or less, and a balance of iron and unavoidable impurities and having a mass % of S shown by [S], a mass % of O shown by [O], a mass % of REM shown by [REM], a mass % of Ti shown by [Ti], and a mass % of N shown by [N] satisfying [Formula 1] and [Formula 2]: [REM]2×[O]2×[S]≧1×10−15[Formula 1] ([REM]2×[O]2×[S])÷([Ti]×[N])≧1×10−10[Formula 2]
摘要:
A projection type liquid crystal display apparatus includes: a light source; a liquid crystal display device; and a projection lens projecting light modulated by the liquid crystal display device. The liquid crystal display device includes a liquid crystal layer, a pixel electrode section having two-dimensionally disposed pixel apertures through which light can pass, and first and second microlens arrays formed on a light entering side and a light exiting side of the device with respect to the liquid crystal layer, respectively, and being a two-dimensional array of first and second microlenses provided in association with the pixel apertures, respectively. The F-number of the first microlenses is set at a value equal to or greater than that of the projection lens. The first and second microlenses are disposed such that the groups of microlenses are located in the focus position of each other.
摘要:
A rapidly-solidified non-oriented electrical steel sheet having high magnetic flux density and low core loss is provided.The method of producing the non-oriented electrical steel sheet excellent in magnetic properties comprises casting a steel strip by using a traveling cooling roll surface(s) to solidify a steel melt of a prescribed chemical composition, which melt contains one or both of REM and Ca at a total content of 0.0020 to 0.01% and is cast in an atmosphere of Ar, He or a mixture thereof.
摘要:
A low-carbon steel slab producing method includes: adding Ti to a molten steel decarbonized to have a carbon concentration of 0.05 mass % or less, and subsequently adding at least one of La and Ce to adjust a constitution, and producing a smelted molten steel; and pouring the smelted molten steel into a casting mold via a tundish; wherein at least one of La and Ce in a total amount of 0.2 to 1.2 times an increased amount of oxygen in the smelted molten steel during contained in the tundish is added to the smelted molten steel in the tundish, so as to obtain a steel slab having inclusions which contain oxides of Ti and at least one of La and Ce as chief components, and so as to make a composition of each of the inclusions have a mass ratio of 0.1 to 0.7, in terms of (La2O3+Ce2O3)÷TiOn (n=1˜2).
摘要翻译:一种低碳钢板坯的制造方法,其特征在于,在脱碳碳钢中添加Ti至碳质浓度为0.05质量%以下,然后添加La和Ce中的至少一种来调节构成,并且生产熔融钢水 ; 并通过中间包将熔炼的钢水倒入铸模中; 其特征在于,在所述中间包中含有的熔融钢水中,在所述中间包中含有的氧化合金量的0.2〜1.2倍量中的至少一种添加到所述中间包中的所述熔融钢水中,从而得到钢坯 具有包含Ti的氧化物和La和Ce中的至少一种作为主要成分的夹杂物,并且为了使每种夹杂物的组成以(La 2 O 3 + Ce 2 O 3)÷TiO n计的质量比为0.1〜0.7 (n = 1〜2)。