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    • 63. 发明授权
    • 자기특성이 우수한 방향성 전기강판 및 그 제조방법
    • 磁特性优良的定向电磁钢板及其制造方法
    • KR1019930004849B1
    • 1993-06-09
    • KR1019910011905
    • 1991-07-12
    • 주식회사 포스코재단법인 포항산업과학연구원
    • 이청산우종수
    • C21D8/12
    • C22C38/02
    • The oriented electric steel plate having good magnetic property comprises 2.5-4 wt.% Si, 0.03-0.15 wt.% Mn, 0.03-0.3 wt.% Cu, 0.02-0.2 wt.% P, the balance of iron and inevitable impurities. The oriented electric steel plate having 0.15-0.27 mm of the thickness is prepared by (a) smelting the silicon steel slab, which contains 0.03-0.1 wt.% C, 2.5-4 wt.% Si, 0.03-0.15 wt.% Mn, 0.01-0.05 wt.% S, 0.01-0.05 wt.% Al, 0.003-0.012 wt.% N and the balance of iron, to make the molten steel, (b) adding 0.03-0.3 wt.% Cu and 0.02-0.05 wt.% P to the silicon molten steel, and (c) hot rolling, precipitation annealing, acid cleaning, cold rolling, decarburization annealing, annealing separation coating and high- temperature annealing.
    • 具有良好磁特性的取向电工钢板包括2.5-4重量%的Si,0.03-0.15重量%的Mn,0.03-0.3重量%的Cu,0.02-0.2重量%的P,余量的铁和不可避免的杂质。 通过(a)熔炼含有0.03-0.1重量%C,2.5-4重量%Si,0.03-0.15重量%Mn的硅钢板,制备厚度为0.15-0.27mm的取向电工钢板 ,0.01-0.05重量%的S,0.01-0.05重量%的Al,0.003-0.012重量%的N和余量的铁,以制造钢水,(b)加入0.03-0.3重量%的Cu和0.02- 0.05重量%的P,和(c)热轧,沉淀退火,酸洗,冷轧,脱碳退火,退火分离涂层和高温退火。
    • 65. 发明授权
    • 자기특성이 우수한 방향성 전기강판의 제조방법
    • 磁特性优异的定向电磁钢板的制造方法
    • KR1019920004949B1
    • 1992-06-22
    • KR1019890019989
    • 1989-12-28
    • 주식회사 포스코재단법인 포항산업과학연구원
    • 이청산우종수
    • C21D8/12
    • A fabrication method for electric steel plate, which composition is 0.02-0.08 C, 2.5-4.0 Si, 0.05-0.20 Mn, 0.02-0.04 S and the remainder of Fe, in wt.%, is characterized by, after hot-rolling slab: (1) pre-annealing it at 750-1000 deg.C for 1-30 min; (2) cooling it down to 500-550 deg.C at a speed of 30-120 deg.C/sec; (3) homogenization treating it at 500-550 deg.C for 30 sec-20 min; (4) forming it by cold rolling for two times till its final thickness is 0.200-0.285 mm including intermidate annealing. It prevents from 1st normal recrystallization grain growth by addition of MnS and it can be applied to magnetic core materials for transformer and generator.
    • 一种电镀钢板的制造方法,其组成为0.02-0.08℃,2.5-4.0Si,0.05-0.20Mn,0.02-0.04S,余量为Fe,重量%,其特征在于,在热轧板坯 :(1)在750-1000℃预退火1-30分钟; (2)以30-120℃/秒的速度将其冷却至500-550℃; (3)均质化处理500-550℃30秒-20分钟; (4)通过冷轧成型2次,直到其最终厚度为0.200-0.285mm,包括中间退火。 通过添加MnS可防止第一次正常再结晶晶粒生长,并可用于变压器和发电机的磁芯材料。
    • 70. 发明授权
    • 원료의 장입장치
    • 原材料充电装置
    • KR101373111B1
    • 2014-03-11
    • KR1020120133712
    • 2012-11-23
    • 주식회사 포스코
    • 손상한정해권조병국황병운우종수
    • F27B21/10C22B1/20
    • The present invention relates to an apparatus for charging a raw material, including a raw material supplier and a charging chute for transferring the raw material supplied from the raw material supplier to a storage device. The charging chute is provided with a plurality of rollers arranged side by side to form a transfer route of the raw material, and the central axis of the rollers is positioned on a prolate cycloid curve. The transfer route of the raw material formed on the rollers has a shape of cycloid curve. The air permeability of the raw material is enhanced and thus the quality and productivity of sintered ore are improved. [Reference numerals] (AA) X, Roller center trajectory (Prolate cycloid curve); (BB) Y, Roller upper surface (loading chute) trajectory (Cycloid curve)
    • 本发明涉及一种原料装料装置,包括原料供给器和用于将从原料供给装置供给的原料输送到储存装置的装料槽。 充电斜槽设有并排布置的多个辊,以形成原料的转移路线,并且辊的中心轴线位于长条摆线曲线上。 形成在辊上的原料的传送路线具有摆线曲线的形状。 提高原料的透气性,提高烧结矿的质量和生产率。 (标号)(AA)X,滚子中心轨迹(Prolate摆线曲线); (BB)Y,滚子上表面(装载滑槽)轨迹(摆线曲线)