公开(公告)号：US10351942B2

公开(公告)日：2019-07-16

申请号：US14390802

申请日：2012-09-11

申请人： Takafumi Yokoyama ,  Shigeki Nomura

发明人： Takafumi Yokoyama ,  Shigeki Nomura

IPC分类号： C21D8/02 ,  C21D8/04 ,  C21D9/46 ,  C22C38/00 ,  C22C38/08 ,  C22C38/16 ,  C22C38/18 ,  C22C38/28 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C23C2/00 ,  C23C2/06 ,  C23C2/28 ,  C22C38/14 ,  C23C2/02 ,  C23C2/40 ,  B32B15/01 ,  C22C18/04 ,  C21D9/48 ,  C21D1/20

摘要： In a high strength hot-dip galvannealed hot-rolled steel sheet that has an excellent hole expansibility suitable for a stretch flanging and preferably has a high yield ratio and a tensile strength of at least 650 MPa, a hot-rolled steel sheet used as a base material for plating has a chemical composition comprising: in mass %, C: from at least 0.01 and at most 0.20%; Si: at most 0.50%; Mn: from at least 0.01% to at most 1.30%; P: at most 0.05%; S: at most 0.01%; N: at most 0.01%; Al: at most 0.50%; and Ti: from at least 0.05% to at most 0.50%, and a steel structure consisting of a polygonal ferrite having at least 80 area % and the remainder containing one kind or two or more kinds selected from bainitic ferrite, bainite, pearlite, and cementite.

公开(公告)号：US20150140358A1

公开(公告)日：2015-05-21

申请号：US14390802

申请日：2012-09-11

申请人： Takafumi Yokoyama ,  Shigeki Nomura

发明人： Takafumi Yokoyama ,  Shigeki Nomura

IPC分类号： C23C2/00 ,  C22C38/28 ,  C22C38/18 ,  C22C38/16 ,  C22C38/14 ,  B32B15/01 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C22C38/12

CPC分类号： C23C2/006 ,  B32B15/013 ,  C21D1/20 ,  C21D8/02 ,  C21D8/0263 ,  C21D8/0426 ,  C21D8/0447 ,  C21D9/46 ,  C21D9/48 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/005 ,  C21D2211/009 ,  C22C18/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/28 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  Y10T428/12799

摘要： In a high strength hot-dip galvannealed hot-rolled steel sheet that has an excellent hole expansibility suitable for a stretch flanging and preferably has a high yield ratio and a tensile strength of at least 650 MPa, a hot-rolled steel sheet used as a base material for plating has a chemical composition comprising: in mass %, C: from at least 0.01 and at most 0.20%; Si: at most 0.50%; Mn: from at least 0.01% to at most 1.30%; P: at most 0.05%; S: at most 0.01%; N: at most 0.01%; Al: at most 0.50%; and Ti: from at least 0.05% to at most 0.50%, and a steel structure consisting of a polygonal ferrite having at least 80 area % and the remainder containing one kind or two or more kinds selected from bainitic ferrite, bainite, pearlite, and cementite.

摘要翻译： 在适用于拉伸凸缘的孔膨胀性优异的高强度热浸合金化热镀锌热轧钢板中，优选具有高屈服比，拉伸强度为650MPa以上的热轧钢板， 电镀用基材的化学组成为：质量％，C：0.01以上0.20％以下。 Si：0.50％以下; Mn：至少0.01％至至多1.30％; P：0.05％以下; S：0.01％以下; N：0.01％以下; 铝：最多0.50％; 和Ti：至少0.05％至至多0.50％，以及由具有至少80面积％的多边形铁素体组成的钢结构体，剩余部分含有选自贝氏体铁素体，贝氏体，珠光体，和贝氏体的一种或两种以上 渗碳体

公开(公告)号：US5902226A

公开(公告)日：1999-05-11

申请号：US616375

申请日：1996-03-15

申请人： Keiko Tasaki ,  Yasuyoshi Hamada ,  Takafumi Yokoyama

发明人： Keiko Tasaki ,  Yasuyoshi Hamada ,  Takafumi Yokoyama

IPC分类号： C03C17/30 ,  C01B33/145 ,  C01B33/146 ,  C01B33/18 ,  C03C17/25

CPC分类号： C01B33/146 ,  Y10S516/928

摘要： A propanol sol of silica having a specific surface area of 25 to 550 m.sup.2 /g, the sol having an SiO.sub.2 concentration of 10 to 50% by weight of SiO.sub.2 and a residual content of a medium containing 7.5% by weight or less of water based on the SiO.sub.2 content and 90% by weight or more of propanol, is prepared by an improved process involving replacing the aqueous medium in an acidic aqueous sol of silica containing 5 to 50% by weight of SiO.sub.2 and a medium having a water content of 15% by weight or more with propanol by an atmospheric distillation method in which a concentration of 5 to 50% by weight of SiO.sub.2 in the sol and 1 to 85% by weight of methanol in the medium in the sol is maintained when the medium in the sol during the replacement contains 15 to 0.5% by weight of water.

摘要翻译： 比表面积为25〜550m 2 / g的二氧化硅的丙醇溶胶，SiO 2浓度为SiO 2浓度为10〜50重量％，残留量为7.5重量％以下的介质 通过改进的方法制备SiO 2含量和90重量％以上的丙醇，该方法包括在含有5至50重量％的SiO 2和含水量为15的介质的二氧化硅的酸性水溶胶中更换含水介质 通过常压蒸馏法，当溶剂中的SiO 2浓度为5〜50重量％时，溶剂中的介质中的甲醇为1〜85重量％，维持在 在更换期间溶胶中含有15至0.5重量％的水。

公开(公告)号：US6025455A

公开(公告)日：2000-02-15

申请号：US84092

申请日：1998-05-26

申请人： Keiko Yoshitake ,  Takafumi Yokoyama

发明人： Keiko Yoshitake ,  Takafumi Yokoyama

IPC分类号： C01B33/145 ,  C01B33/146 ,  C08G77/00

CPC分类号： C01B33/146 ,  C01B33/145

摘要： A process of producing a hydrophobic organosilica sol which comprises aging a reaction mixture at 0 to 100.degree. C. in the state that an alkali present in the reaction mixture is removed or is neutralized with an acid in an equivalent amount or more, thereby forming a silylation-treated silica sol having a hydrophobic colloidal silica dispersed therein, the reaction mixture comprising: (a) a hydrophilic colloidal silica having a specific surface area of 5.5 to 550 m.sup.2 /g in SiO.sub.2 concentration of 5 to 55% by weight, (b) a silylating agent of a disiloxane compound and/or monoalkoxysilane compound in a millimolar ratio of 0.03 to 2 in terms of Si atom per 100 m.sup.2 of a surface of the hydrophilic colloidal silica, and (c) a medium, as a residue thereof, comprising a mixed solvent comprising a hydrophobic organic solvent having a solubility of water of 0.1 to 12% by weight and an alcohol having 1 to 3 carbon atoms in a weight ratio of 0.05 to 20 to the hydrophobic organic solvent, and water in an amount of 15% by weight or less based on the weight of the medium.

摘要翻译： 一种生产疏水性有机二氧化硅溶胶的方法，其包括在反应混合物中存在的碱被除去或用等于或等于等的量中和的状态下，使反应混合物在0至100℃下老化，从而形成 甲硅烷基化处理的二氧化硅溶胶，其中分散有疏水胶体二氧化硅，反应混合物包含：（a）SiO 2浓度为5〜55重量％比表面积为5.5〜550m 2 / g的亲水胶体二氧化硅，（b ）二硅氧烷化合物和/或单烷氧基硅烷化合物的硅烷化剂，以亲水胶体二氧化硅表面的100m 2表示的Si原子计为0.03〜2的毫摩尔率，（c）作为残留物的介质， 其特征在于，含有水溶性为0.1〜12重量％的疏水性有机溶剂和碳原子数1〜3的醇与疏水性有机溶剂的重量比为0.05〜20的混合溶剂， n量为15重量％以下，基于介质的重量。