专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5690755A Cold-rolled steel sheet and hot-dip galvanized cold-rolled steel sheet having excellent bake hardenability, non-aging properties at room temperature and good formability and process for producing the same 失效
标题翻译：冷轧钢板和热浸镀锌冷轧钢板，具有优异的烘烤硬化性，室温下的非时效性和良好的成型性及其制造方法
公开(公告)号：US5690755A
公开(公告)日：1997-11-25
申请号：US712247
申请日：1996-09-11
申请人： Naoki Yoshinaga , Kohsaku Ushioda , Osamu Akisue , Yoshikazu Matsumura , Kunio Nishimura
发明人： Naoki Yoshinaga , Kohsaku Ushioda , Osamu Akisue , Yoshikazu Matsumura , Kunio Nishimura
IPC分类号： C21D8/04 , B32B15/18 , C21D7/02
CPC分类号： C21D8/0436 , C21D8/0426 , C21D8/0473 , Y10T428/12799
摘要： The present invention provides a cold-rolled steel sheet and a hot-dip galvanized steel sheet having good bake hardenability, non-aging properties at room temperature and good formability and a process for producing the same. An extra low carbon steel or an extra low carbon steel containing at least one element selected from Ti and Nb is annealed at a temperature of not lower than the AC.sub.3 transformation point to bring the structure after annealing to a structure of low-temperature transformation products. This makes it possible to provide a steel sheet that has a combination of high paint-bake hardenability and non-aging properties at room temperature and is excellent also in formability in respect of average r value (deep drawability) and elongation (punch stretchability). In particular, with respect to paint-bake hardenability, a BH property on a high level up to about 10 kgf/mm.sup.2 can be imparted according to need, and it is possible to provide a cold-rolled steel sheet and a hot-dip galvanized cold-rolled steel sheet that also have a non-aging property at room temperature.
摘要翻译：本发明提供一种具有良好的烘烤硬化性，室温下非时效性和良好的成形性的冷轧钢板和热浸镀锌钢板及其制造方法。含有选自Ti和Nb中的至少一种元素的超低碳钢或超低碳钢在不低于AC3相变点的温度下进行退火，以使退火后的结构达到低温转化产物的结构。这使得可以提供在室温下具有高油漆烘烤硬化性和非时效性的组合的钢板，并且在平均r值（深冲性）和伸长率（冲压拉伸性）方面也具有优异的成型性。特别是关于烤漆硬化性，可以根据需要赋予高达约10kgf / mm2的高水平的BH性能，并且可以提供冷轧钢板和热浸镀锌在室温下也具有不老化性能的冷轧钢板。

2. 发明授权

US5486241A Non-aging at room temperature ferritic single-phase cold-rolled steel sheet and hot-dip galvanized steel sheet for deep drawing having excellent fabrication embrittlement resistance and paint-bake hardenability and process for producing the same 失效
标题翻译：室温下的非老化铁素体单相冷轧钢板和用于深拉伸的热浸镀锌钢板具有优异的制造抗脆性和油漆烘烤淬透性及其制备方法
公开(公告)号：US5486241A
公开(公告)日：1996-01-23
申请号：US240782
申请日：1994-06-29
申请人： Kohsaku Ushioda , Naoki Yoshinaga , Yoshikazu Matsumura , Osamu Akisue , Kunio Nishimura , Hidekuni Murakami
发明人： Kohsaku Ushioda , Naoki Yoshinaga , Yoshikazu Matsumura , Osamu Akisue , Kunio Nishimura , Hidekuni Murakami
IPC分类号： C21D8/04 , C22C38/32 , C23C2/02 , C22C38/06 , C21D8/02
CPC分类号： C22C38/32 , C21D8/0426 , C23C2/02 , C21D2211/005 , C21D8/0436 , C21D8/0473
摘要： The present invention provides a non-aging at room temperature ferritic single-phase cold-rolled steel sheet or hot-dip galvanized steel sheet for deep drawing and having excellent fabrication embrittlement resistance and paint-bake hardenability, by heating a slab comprising, in terms of % by weight, 0.0001 to 0.0015% of C, not more than 1.2% of Si, 0.03 to 3.0% of Mn, 0.01 to 0.15% of P, 0.0010 to 0.020% of S, 0.005 to 0.1% of Al, 0.0001 to 0.0080% of N and 0.0001 to 0.0030% of B and optionally 0.1 to 3% of Cr with the balance consisting of Fe and unavoidable impurities, hot-rolling the heated slab at a finishing temperature of not lower than (Ar.sub.3 --100).degree. C., cooling the hot-rolled coil within 1 sec after the hot rolling at a rate of not less than 50.degree. C./sec from the finishing temperature to a temperature in the range of from 600.degree. to 750.degree. C. and coiling the cooled strip in said temperature range, cold-rolling the coil with a reduction ratio of not lower than 60% and conducting continuous annealing or continuous hot-dip galvanizing in the temperature range of from 600.degree. to 900.degree. C.
摘要翻译： PCT No.PCT / JP93 / 01314 Sec。 371日期：1994年6月29日 102（e）日期1994年6月29日PCT提交1993年9月14日PCT公布。出版物WO94 / 06948 日本公开1994年3月31日。本发明提供了室温铁素体单相冷轧钢板或深拉深的热浸镀锌钢板的非老化性，并且具有优异的制造脆性和油漆烘烤淬透性，加热板坯，以重量％计，C：0.0001〜0.0015％，Si：1.2％以下，Mn：0.03〜3.0％，P：0.01〜0.15％，S：0.0010〜0.020％ 0.1％的Al，0.0001〜0.0080％的N，0.0001〜0.0030％的B和0.1〜3％的Cr，余量由Fe和不可避免的杂质构成，在不低于100℃的终轧温度下进行热轧（Ar3-100）℃，在热轧后1秒内以从终轧温度至少50℃/秒的速度将热轧板卷冷却至600〜 750℃，并在所述温度范围内卷取冷却的带材，以不低于t的压下率将线圈冷轧在60℃〜900℃的温度范围内进行连续退火或连续热浸镀锌。

3. 发明授权

US5384206A High-strength cold-rolled steel strip and molten zinc-plated high-strength cold-rolled steel strip having good formability and method of producing such strips 失效
标题翻译：具有良好成形性的高强度冷轧钢带和熔融镀锌高强度冷轧钢带以及这种钢带的制造方法
公开(公告)号：US5384206A
公开(公告)日：1995-01-24
申请号：US117042
申请日：1993-09-03
申请人： Kohsaku Ushioda , Naoki Yoshinaga , Osamu Akisue
发明人： Kohsaku Ushioda , Naoki Yoshinaga , Osamu Akisue
IPC分类号： C22C38/04 , C22C38/12 , B32B15/18 , C21D7/02 , C21D9/52
CPC分类号： C22C38/12 , C22C38/04 , Y10T428/12799
摘要： A high-strength cold-rolled steel strip or a molten zinc-plated high-strength cold-rolled steel strip which have a low yield strength, containing, by weight, of 0.0005-0.01% C, not more than 0.8% Si, more than 0.5% but not more than 3.0% Mn, 0.01-0.12%: P. 0.0010-0.015% S, 0.01-0.1% Al, 0.0005-0.0060% N, not less than 0.0001% but less than 0.005-0.1% the content of Nb being made to satisfy Nb .gtoreq.93/12 (C-0.0015), or instead of 0.005-0.1% Nb, 0.0005-0.1% Ti and 0.003-0.1% Nb, the content of Nb and the content of Ti being made satisfy, Ti.gtoreq.3.42N, and the balance Fe and incidental impurities is provided. Another steel strip or molten zinc-plated strip is provided that contains 0.2-3.0% Cr but does not require B, and includes both Ti and Nb. The method of producing such is also provided.
摘要翻译： PCT No.PCT / JP92 / 00304 Sec。 371日期1993年9月3日 102（e）日期1993年9月3日PCT 1991年3月13日PCT公布。出版物WO92 / 16668 日本1992年1月10日。一种高强度冷轧钢带或熔融镀锌高强度冷轧钢带，其屈服强度低，重量含有0.0005-0.01％C，不大于0.8％的Si，大于0.5％但不大于3.0％的Mn，0.01-0.12％：P. 0.0010-0.015％S，0.01-0.1％的Al，0.0005-0.0060％的N，不小于0.0001％ Nb≤3/ 12/2（C-0.0015），Nb：0.005〜0.1％，Ti：0.0005〜0.1％，Nb：0.003〜0.1％，Nb：0.005〜0.1％ Nb和Ti的含量满足Ti> / = 3.42N，并且提供余量的Fe和附带的杂质。提供另一条钢带或熔融镀锌钢带，其含有0.2-3.0％的Cr，但不需要B，并且包括Ti和Nb。还提供了制造方法。

4. 发明授权

US5074924A Process for producing galvanized, non-aging cold rolled steel sheets having good formability in a continuous galvanizing line 失效
标题翻译：生产在连续加工线中具有良好可轧性的非变性冷轧钢板的方法
公开(公告)号：US5074924A
公开(公告)日：1991-12-24
申请号：US541732
申请日：1990-06-21
申请人： Kohsaku Ushioda , Osamu Akisue , Naoki Yoshinaga , Tomohisa Katayama , Masakazu Oshimi
发明人： Kohsaku Ushioda , Osamu Akisue , Naoki Yoshinaga , Tomohisa Katayama , Masakazu Oshimi
IPC分类号： C21D8/04 , C21D9/52 , C23C2/02 , C23C2/28
CPC分类号： C23C2/02 , C21D8/0473 , C21D9/52 , C23C2/28 , C21D8/0478
摘要： A process for producing a non-aging galvanized steel sheet having good formability in a continuous galvanizing production line, which comprises heating a low carbon, Al-killed cold rolled steel sheet at a temperature not lower than a recrystallizing temperature, reducing the surface of the steel sheet thus heated in a reducing atmosphere, cooling the steel sheet to a temperature (T.sub.E) ranging from 200.degree. to 350.degree. C. from a temperature not lower than 600.degree. C. at a cooling rate not less than 30.degree. C/s, holding the steel sheet at the temperature (T.sub.E) for 0 to less than 10 seconds, reheating the steel sheet to a temperature ranging from 430.degree. to 500.degree. C. at a heating rate not less than 10.degree. C/s, immersing the steel sheet into a molten zinc bath, cooling the steel sheet thus galvanized to a temperature not higher than 370.degree. C., and subjecting the steel sheet to an overaging treatment to a temperature range from 250.degree. to 320.degree. C. for not shorter than 40 seconds. A modified process according to the present invention further comprises reheating the galvanized steel sheet to a temperature raning from 480.degree. to 600.degree. C. at a heating rate not lower than 10.degree. C/s, and holding the sheet in this temperature range to perform alloying of the zinc coating layer with the steel substrate.

5. 发明授权

US06368380B1 Method of melt-removing impurity elements from iron 失效
标题翻译：从铁中去除杂质元素的方法
公开(公告)号：US06368380B1
公开(公告)日：2002-04-09
申请号：US09539998
申请日：2000-03-30
申请人： Yoshiyuki Ueshima , Kohsaku Ushioda
发明人： Yoshiyuki Ueshima , Kohsaku Ushioda
IPC分类号： C21C704
CPC分类号： C21C1/04 , C21C5/562 , C22B7/004 , Y02P10/216 , Y02P10/22 , Y02P10/228 , Y02P10/23 , Y02P10/236
摘要： An iron scrap having a composition comprising iron and iron-soluble elements in the sum of 100 mass %, and containing Cu, elements of the Groups IIIa, VIII, Ib, IIb, IIIb, IVb and Vb having affinity with Cu, and unavoidable impurities, is melted in an oxygen-containing atmosphere. A predetermined amount of C, and whenever necessary, a predetermined amount of at least one of Cr and Mo and/or a predetermined amount of at least one of Mn, V and Ti, are added to the molten steel. The molten iron is then separated into an Fe-enriched layer and a Cu-enriched layer under the molten state. Cu and the above elements having affinity with Cu are separated and precipitated into the Cu-enriched layer by utilizing the difference of the specific gravity between the layers. According to this method, impurity elements detrimental to the stable production of a steel material having a homogeneous property, such as Cu, Sn, etc., can be removed economically and efficiently when the iron scrap is recycled.
摘要翻译：具有100质量％的铁和铁溶性元素的组成的铁屑，含有Cu，与Cu具有亲和性的IIIa，VIII，Ib，IIb，IIIb，IVb和Vb族的元素，以及不可避免的杂质在含氧气氛中熔融。预定量的C，并且必要时，将预定量的Cr和Mo中的至少一种和/或预定量的至少一种Mn，V和Ti加入钢水中。然后将铁水在熔融状态下分离成富铁层和富Cu层。 Cu和上述与Cu具有亲和性的元素通过利用层之间的比重差而分离并沉淀到富含Cu的层中。根据该方法，当铁废料再循环时，可以经济有效地去除对于具有均匀性质的钢材的稳定生产有害的杂质元素，例如Cu，Sn等。

6. 发明授权

US5855696A Ultra low carbon, cold rolled steel sheet and galvanized steel sheet having improved fatigue properties and processes for producing the same 失效
标题翻译：具有改善的疲劳特性的超低碳冷轧钢板和镀锌钢板及其制造方法
公开(公告)号：US5855696A
公开(公告)日：1999-01-05
申请号：US737909
申请日：1997-03-19
申请人： Makoto Tezuka , Kohsaku Ushioda , Shiro Fujii , Atsushi Itami , Yasuharu Sakuma , Tatsuo Yokoi
发明人： Makoto Tezuka , Kohsaku Ushioda , Shiro Fujii , Atsushi Itami , Yasuharu Sakuma , Tatsuo Yokoi
IPC分类号： C21D8/04 , C22C38/00 , C22C38/06 , C22C38/12 , C22C38/14 , C23C2/02 , C23C2/06 , C23C2/40 , C22C38/04
CPC分类号： C22C38/12 , C21D8/0436 , C22C38/001 , C22C38/06 , C22C38/14 , C23C2/02 , C23C2/06 , C23C2/40 , C21D8/0426 , C21D8/0473 , C21D8/0478
摘要： The cold rolled steel sheet or galvanized steel sheet comprises by weight C: 0.0001 to 0.0026%, Si: not more than 1.2%, Mn: 0.03 to 3.0%, P: 0.015 to 0.15%, S: 0.0010 to 0.020%, Al: 0.005 to 0.1%, N: 0.0005 to 0.0080% and B: 0.0003 to 0.0030% with the balance consisting of Fe and unavoidable impurities. A process for producing the above steel sheet is also provided which comprises the steps of: performing hot roll finishing of a slab having the above chemical composition at the Ar.sub.3 transformation point or above; preferably, then cooling the hot rolled strip, within 1.5 sec after the completion of the hot rolling, to 750.degree. C. at a rate of not less than 50.degree. C./sec; coiling the strip in the temperature range of from room temperature to 750.degree. C.; cold rolling the coiled strip a reduction ratio of not less than 70%; subjecting the cold rolled strip to continuous annealing at 600.degree. to 900.degree. C. or to continuous galvanizing by the sendzimer method; and performing temper rolling with a reduction ratio of not less than 1.5.times.(1-400.times.C) % and not less than 2080.times.(C - 0.0015) wherein C represents the carbon content in % by weight.
摘要翻译： PCT No.PCT / JP96 / 00805 Sec。 371日期1997年3月19日 102（e）1997年3月19日PCT PCT 1996年3月27日PCT公布。出版物WO96 / 30555 日期：1996年10月3日冷轧钢板或镀锌钢板以C：0.0001〜0.0026％，Si：1.2％以下，Mn：0.03〜3.0％，P：0.015〜0.15％，S：0.0010〜 0.020％，Al：0.005〜0.1％，N：0.0005〜0.0080％，B：0.0003〜0.0030％，余量由Fe和不可避免的杂质构成。还提供了一种生产上述钢板的方法，其包括以下步骤：在Ar 3相变点或更高温度下进行具有上述化学组成的板坯的热轧精加工; 优选在热轧结束后的1.5秒内将热轧带材冷却至750℃以上，不低于50℃/秒; 在室温至750℃的温度范围内卷取带材; 冷轧卷取钢带的减速比不小于70％; 使冷轧带材在600〜900℃下进行连续退火，或通过sendzimer法连续镀锌; 并且以不小于1.5×（1-400×℃）％且不小于2080×（C-0.0015）的还原率进行调质轧制，其中C表示碳含量以重量％计。

7. 发明授权

US5470403A Cold rolled steel sheet and hot dip zinc-coated cold rolled steel sheet having excellent bake hardenability, non-aging properties and formability, and process for producing same 失效
标题翻译：烘烤硬化性，非时效性和成型性优异的冷轧钢板和热浸镀锌冷轧钢板及其制造方法
公开(公告)号：US5470403A
公开(公告)日：1995-11-28
申请号：US196098
申请日：1994-02-18
申请人： Naoki Yoshinaga , Kohsaku Ushioda , Osamu Akisue , Kunio Nishimura
发明人： Naoki Yoshinaga , Kohsaku Ushioda , Osamu Akisue , Kunio Nishimura
IPC分类号： C21D8/02 , C21D8/04 , C22C38/04 , C22C38/06 , C23C2/02 , C23C2/06 , B32B15/00
CPC分类号： C22C38/04 , C21D8/0273 , C22C38/06 , C23C2/02 , C23C2/06 , C21D8/0236 , C21D8/0278 , C21D8/04 , Y10T428/12799
摘要： The present invention provides a cold rolled steel sheet and a hot dip zinc-coated cold rolled steel sheet excellent in paint bake hardenability, non-aging properties and formability, and a process for producing the same. In the present invention, an extremely low carbon steel or extremely low carbon steel containing at least one element selected from the group consisting of Ti and Nb is used as a base steel, and Mn and Cr are positively added thereto, whereby the resultant steel has a mixed structure after annealing. Accordingly, there can be obtained a steel sheet having both a high paint bake hardenability and non-aging properties, and being excellent in formability such as an average r-value (deep drawability). With regard to the paint bake hardenability, the present invention may provide a cold rolled steel sheet and a hot dip zinc-coated cold rolled steel sheet to which paint bake hardening may be optionally imparted in an amount as large as about 10 kgf/mm.sup.2 and which also have non-aging properties.
摘要翻译： PCT No.PCT / JP93 / 00846 Sec。 371日期1994年2月18日 102（e）1994年2月18日PCT 1993年6月22日PCT公布。出版物WO94 / 00615 日本1994年1月6日。本发明提供了优异的油漆烘烤硬化性，非时效性和成形性的冷轧钢板和热浸镀锌冷轧钢板及其制造方法。在本发明中，使用含有选自Ti和Nb中的至少一种元素的极低碳钢或极低碳钢作为基础钢，并且向其中积极添加Mn和Cr，由此得到的钢具有退火后的混合结构。因此，可以获得具有高油漆烘烤硬化性和不老化性能的钢板，并且具有优异的成形性，例如平均r值（深冲性）。关于油漆烘烤淬透性，本发明可以提供冷轧钢板和热浸镀锌冷轧钢板，其中可以任选地赋予大约10kgf / mm2的量的油漆烘烤硬化，这也具有非老化性能。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式