Process for producing cold-rolled strips and sheets of austenitic
stainless steel
    5.
    发明授权
    Process for producing cold-rolled strips and sheets of austenitic stainless steel 失效
    生产奥氏体不锈钢冷轧钢带和板材的工艺

    公开(公告)号:US5092393A

    公开(公告)日:1992-03-03

    申请号:US492560

    申请日:1990-03-12

    IPC分类号: C21D8/02

    CPC分类号: C21D8/0205 Y10T29/49991

    摘要: Disclosed is a process for the producing coldrolled strips and sheets of austenitic stainless steel, which comprises preparing a cast strip having a thickness not larger than 10 mm, which is composed of an austenitic stainless steel, by a continuous casting machine, in which the wall surface of a casting mold moves synchronously with the cast strip, and cold rolling the cast strip by a hard rolls having a surface hardness not lower than the Vickers hardness of 600. A preferred embodiment of the present invention is characterized in that crystal grains of the cast strip are made finer by cooling the cast strip at a cooling rate of at least 50.degree. C./sec in the temperature range of from the temperature for initiation of solidification of the cast strip to 1200.degree. C. and the cast strip is then coldrolled by the hard rolls, another preferred embodiment of the present invention is characterized in that the hard rolls are composed of a material having a Young's modulus of at least 30000 kgf/mm.sup.2 and the cast strip is cold-rolled by such hard rolls, and another preferred embodiment of the present invention is characterized in that for cast strip which is descaled by pickling, especially with nitric and fluoric acid, prior to cold rolling, the cast strip is cooled at a cooling rate of at least 10.degree. C./sec in the Cr carbide-precipitating temperature range of from 900.degree. to 550.degree. C.

    Process for production of Cr-Ni type stainless steel sheet having
excellent surface properties and material quality
    6.
    发明授权
    Process for production of Cr-Ni type stainless steel sheet having excellent surface properties and material quality 失效
    生产具有优异表面性能和材料质量的Cr-Ni型不锈钢板的方法

    公开(公告)号:US5030296A

    公开(公告)日:1991-07-09

    申请号:US474772

    申请日:1990-03-07

    IPC分类号: B22D11/06 C21D8/02

    CPC分类号: B22D11/06 C21D8/0205

    摘要: A process in which a cast strip of Cr-Ni type stainless steel having a thickness close to a product thickness is prepared by the synchronous continuous casting. By subjecting the cast strip just below the casting machine to rapid cooling in the high-temperature region, hot-working or cold-working the cast strip and subjecting the cast strip to annealing or the like, .gamma. grains in the cast strip are made finer, and by carrying out cooling in the low-temperature region of temperatures lower than 900.degree. C., precipitation of Cr carbide in the grain boundary is prevented. Thus, occurrence of roping or uneven gloss on the surface of the stainless steel sheet is controlled.

    摘要翻译: PCT No.PCT / JP89 / 00692 Sec。 371 1990年3月7日第 102(e)1990年3月7日PCT PCT 1989年7月10日PCT公布。 公开号WO90 / 00454 日期:1990年1月25日。一种通过同步连续铸造制备具有接近产品厚度的Cr-Ni型不锈钢铸造带的方法。 通过对铸造机正下方的铸造带材进行高温区域的快速冷却,对铸造带材进行热加工或冷加工,并对铸造带材进行退火等,使铸造带材中的γ晶粒变得更细 通过在低于900℃的低温区域进行冷却,可以防止Cr晶界析出。 因此,控制在不锈钢板的表面上发生卷曲或不均匀的光泽。

    High-toughness and high-strength ferritic steel and method of producing the same
    7.
    发明授权
    High-toughness and high-strength ferritic steel and method of producing the same 失效
    高韧性和高强度铁素体钢及其制造方法

    公开(公告)号:US06827755B2

    公开(公告)日:2004-12-07

    申请号:US10187367

    申请日:2002-07-02

    IPC分类号: C22C3302

    摘要: A high-strength and high-toughness ferritic steel having a tensile strength of not less than 1,000 MPA and a Charpy impact value of not less than 1 MJ/m2 is provided. A ferritic steel comprising, by weight, not more than 1% Si, not more than 1.25% Mn, 8 to 30% Cr, not more than 0.2% C, not more than 0.2% N, not more than 0.4% O, a total amount of not more than 12% of at least one compound-forming element selected from the group of Ti, Zr, Hf, V and Nb in amounts of not more than 3% Ti, not more than 6% Zr, not more than 10% Hf, not more than 1.0% V and not more than 2.0% Nb, also containing where necessary not more than 0.3% Mo, not more than 4% W and not more than 1.6% Ni, and the balance consisting of Fe and unavoidable impurities, and having an average crystal grain size of not more than 1 &mgr;m, can be obtained by a method comprising encapsulating a steel powder produced by mechanical alloying, and subjecting the encapsulated steel powder to plastic deformation.

    摘要翻译: 提供抗拉强度不小于1,000MPA和夏比冲击值不小于1MJ / m 2的高强度和高韧性的铁素体钢。 一种铁素体钢,其含有不超过1%的Si,不超过1.25%的Mn,8-30%的Cr,不超过0.2%的C,不超过0.2%的N,不超过0.4%的O,a 不少于12%的选自Ti,Zr,Hf,V和Nb中的至少一种化合物形成元素的量不超过3%Ti,不超过6%Zr,不大于 10%Hf,不大于1.0%V和不超过2.0%的Nb,还含有必要时不超过0.3%的Mo,不大于4%W和不超过1.6%的Ni,余量由Fe和 不可避免的杂质,平均结晶粒径不大于1μm,可以通过包括将通过机械合金化制造的钢粉末包封并使密封的钢粉末发生塑性变形的方法获得。

    Method of producing permalloy cores
    8.
    发明授权
    Method of producing permalloy cores 失效
    坡莫合金核心生产方法

    公开(公告)号:US5394721A

    公开(公告)日:1995-03-07

    申请号:US149253

    申请日:1993-11-09

    IPC分类号: H01F1/147 H01F41/02 B21C37/02

    摘要: A method of producing permalloy cores comprising the steps of coating at least one surface of permalloy strip with a slurry consisting of water containing 1 to 5 percent by weight of magnesium hydroxide (Mg(OH).sub.2) powder and the addition of one or more selected from a binder, a thickening agent and a defoaming agent and drying said coating, slitting the permalloy strip thus covered with a coating that when dry is 0.1 to 50 .mu.m thick, more preferably 0.5 to 10 .mu.m thick, and contains not less than 50 percent by weight Mg(OH).sub.2, and more preferably not less than 80 percent by weight Mg(OH).sub.2, as the main constituent, to a final width, or first to an intermediate width if necessary, winding or punching the final width strip to obtain wound or laminated punched cores, and subjecting the core materials to magnetization annealing.

    摘要翻译: 一种生产坡莫合金芯的方法,包括以下步骤:用含有1至5重量%氢氧化镁(Mg(OH)2)粉末的水组成的浆料涂覆坡莫合金带材的至少一个表面,并加入一个或多个选定的 从粘合剂,增稠剂和消泡剂中干燥,并干燥所述涂层,切割由这样的涂层覆盖的坡莫合金带,该涂层当干燥时厚度为0.1-50μm,更优选为0.5-10μm,并且不小于 50重量%的Mg(OH)2,更优选不小于80重量%的Mg(OH)2作为主要成分,至最终宽度,或如果需要的话,可以首先到中间宽度,卷绕或冲压最终的 以获得卷绕或层压冲压芯,并对芯材进行磁化退火。

    Process for preparing rollable metal sheet from quenched solidified thin
cast sheet as starting material
    9.
    发明授权
    Process for preparing rollable metal sheet from quenched solidified thin cast sheet as starting material 失效
    从淬火固化的薄铸片作为原料制备可卷曲的金属片的方法

    公开(公告)号:US5286315A

    公开(公告)日:1994-02-15

    申请号:US956931

    申请日:1992-10-02

    摘要: The present invention relates to a process for preparing a metal sheet having an excellent rolling property, i.e., a rollable metal sheet, which process comprises the basic steps of: continuously feeding a molten metal on a cooling material having one or two cooling surfaces being transferred and renewed for quench solidification, to thereby prepare a thin cast sheet; impinging a small rigid body particle against the surface of the resultant thin cast sheet, to work the cast sheet; heat-annealing the worked sheet in such a manner that the worked region becomes a fine recrystallized grain layer; and subjecting the cast sheet to a cold or warm rolling, optionally after a removal of oxides present on the surface; and an optional step of heat-treating the rolled sheet for working. The process of the present invention is applicable to the production of various known rollable metal or alloy sheets, such as soft steel, stainless steel, silicon steel, nickel-iron, cobalt-iron, nickel, aluminum, and copper sheets.

    摘要翻译: PCT No.PCT / JP90 / 00442 Sec。 371日期1990年11月29日第 102(e)1990年11月29日PCT PCT 1990年3月30日PCT公布。 出版物WO90 / 11849 1990年10月18日的日期。本发明涉及一种制备具有优异的轧制性能的金属板的方法,即可卷绕的金属板,该方法包括以下基本步骤:将熔融金属连续地供给到具有 一个或两个冷却表面被转移和更新以进行淬火固化,从而制备薄铸片; 将小的刚体颗粒撞击所得薄铸片的表面,以对铸片进行加工; 以加工区域成为精细再结晶晶粒层的方式对加工薄板进行热退火; 并且任选地在去除存在于表面上的氧化物之后对铸片进行冷或热轧; 以及对加工用卷材进行热处理的任选步骤。 本发明的方法适用于生产各种已知的可轧制金属或合金片材,例如软钢,不锈钢,硅钢,镍 - 铁,钴 - 铁,镍,铝和铜片。