公开(公告)号：US20110162556A1

公开(公告)日：2011-07-07

申请号：US13062486

申请日：2009-08-27

Applicant: Tomohiro Banda ,  Hiroyuki Kuwano

Inventor： Tomohiro Banda ,  Hiroyuki Kuwano

IPC: C09D7/12

CPC classification number: C25D3/06 ,  C01G37/00 ,  C01G37/08 ,  C23C22/08 ,  C23C22/10 ,  C23C22/53 ,  C23C2222/10 ,  C25D3/10

Abstract: It is intended to provide a chromium (III)-containing aqueous solution which has widely adjustable molar ratios of various acid radicals to Cr and is useful as a source of trivalent chromium or a supplementary source of trivalent chromium for the bath in the surface treatment of various metals. Specifically, the chromium (III)-containing aqueous solution is characterized by containing a complex chromium (III) salt which is produced by performing chromic acid reduction reaction in the simultaneous or sequential presence of two or more acids selected from an inorganic acid other than chromic acid and an organic acid. Furthermore, it is intended to provide a process for producing a chromium (III)-containing aqueous solution by performing chromic acid reduction reaction by the contact of chromic acid with an acid other than chromic acid and/or an organic reducing agent in a water solvent, characterized in that the chromic acid reduction reaction is performed in the simultaneous or sequential presence of at least two or more acids selected as the acid other than chromic acid from an inorganic acid and an organic acid.

Abstract translation: 旨在提供一种含铬（III）的水溶液，其具有广泛可调的各种酸基与Cr的摩尔比，并且可用作三价铬的来源或用于在表面处理中的浴中的三价铬的补充来源 各种金属。 具体地说，含铬（III）的水溶液的特征在于，含有复合铬（III）盐，它是通过在两种或更多种选自铬酸盐以外的无机酸的同时或相继存在下进行铬酸还原反应 酸和有机酸。 此外，本发明旨在提供一种通过在水溶剂中使铬酸与铬酸和/或有机还原剂之间的酸接触进行铬酸还原反应来制备含铬（III）的水溶液的方法 其特征在于，所述铬酸还原反应是在无机酸和有机酸中选择为不同于铬酸的酸的至少两种或多种酸的同时或相继存在下进行的。

公开(公告)号：US08580221B2

公开(公告)日：2013-11-12

申请号：US13062478

申请日：2009-08-27

Applicant: Hiroyuki Kuwano ,  Tomohiro Banda ,  Yasuyuki Tanaka

Inventor： Hiroyuki Kuwano ,  Tomohiro Banda ,  Yasuyuki Tanaka

IPC: C01B31/24

CPC classification number: C25D3/10 ,  C01G37/00 ,  C01P2006/62 ,  C01P2006/63 ,  C01P2006/64 ,  C23C2222/10 ,  C25D3/06

Abstract: The chromium (III) carbonate of the present invention exhibits a light blue color in a solid state. This chromium (III) carbonate has an L* value of 50 to 70, an a* value of −4 to −2, and a b* value of −10 to −7, which are represented by the L*a*b* color system (JIS Z8729). This chromium (III) carbonate is preferably completely dissolved within 30 minutes when the chromium (III) carbonate is added, in an amount corresponding to a Cr content of 1 g, to 1 liter of an aqueous solution of hydrochloric acid having a pH of 0.2 at a temperature of 25° C. This chromium (III) carbonate is preferably obtained by contacting an aqueous solution of carbonate and an aqueous solution containing trivalent chromium at a pH of 6 to 12 under the condition of a reaction liquid temperature of 0° C. or more and less than 50° C. Also, preferably, after production of the chromium (III) carbonate, filtration is performed, and the chromium (III) carbonate is washed with water until the conductivity of the filtrate is 5 mS/cm or less.

Abstract translation: 本发明的碳酸铬（III）表现出固态的浅蓝色。 该碳酸铬（III）的L *值为50〜70，a *值为-4〜-2，ab *为-10〜-7，由L * a * b *颜色 系统（JIS Z8729）。 当碳酸铬（III）以相当于Cr含量的1g的量添加碳酸铬（III）至1升pH为0.2的盐酸水溶液时，优选在30分钟内完全溶解该碳酸铬（III） 该温度为25℃。这种碳酸铬（III）优选通过在反应液温度为0℃的条件下使碳酸盐水溶液和含有三价铬的水溶液在6至12的pH下接触 以上且小于50℃。此外，优选在碳酸铬（III）的制造之后，进行过滤，并用水洗涤碳酸铬（III），直至滤液的电导率为5mS / cm 或更少。

公开(公告)号：US20110162974A1

公开(公告)日：2011-07-07

申请号：US13062473

申请日：2009-08-24

Applicant: Hiroyuki Kuwano ,  Tomohiro Banda ,  Yasuyuki Tanaka

Inventor： Hiroyuki Kuwano ,  Tomohiro Banda ,  Yasuyuki Tanaka

IPC: C01G37/02 ,  C25D3/06

CPC classification number: C01G37/00 ,  B82Y30/00 ,  C01G37/02 ,  C01P2004/62 ,  C01P2004/64 ,  C23C2222/10

Abstract: In a method for manufacturing chromium hydroxide according to the present invention, chromium hydroxide having higher solubility in an acidic aqueous solution than chromium hydroxide obtained by conventional manufacturing methods can be obtained. The method is characterized by simultaneously adding an aqueous solution of an inorganic alkali and an aqueous solution containing trivalent chromium to an aqueous medium under the condition of a reaction liquid temperature of 0° C. or more and less than 50° C. to produce chromium hydroxide. The pH of the reaction liquid while the aqueous solution containing trivalent chromium and the aqueous solution of the inorganic alkali are added is preferably maintained in the range of 7.0 to 12.

Abstract translation: 在根据本发明的氢氧化铬的制造方法中，可以获得在通过常规制造方法获得的比氢氧化铬在酸性水溶液中溶解度高的氢氧化铬。 该方法的特征在于，在反应液温度为0℃以上且小于50℃的条件下，同时向含水介质中添加无机碱的水溶液和含有三价铬的水溶液，生成铬 氢氧化物。 加入含有三价铬的水溶液和无机碱的水溶液时的反应液的pH优选保持在7.0〜12的范围内。

公开(公告)号：US20110168051A1

公开(公告)日：2011-07-14

申请号：US13062478

申请日：2009-08-27

Applicant: Hiroyuki Kuwano ,  Tomohiro Banda ,  Yasuyuki Tanaka

Inventor： Hiroyuki Kuwano ,  Tomohiro Banda ,  Yasuyuki Tanaka

IPC: C23C16/06 ,  C01G37/00 ,  C23C16/18

CPC classification number: C25D3/10 ,  C01G37/00 ,  C01P2006/62 ,  C01P2006/63 ,  C01P2006/64 ,  C23C2222/10 ,  C25D3/06

Abstract: The chromium (III) carbonate of the present invention exhibits a light blue color in a solid state. This chromium (III) carbonate has an L* value of 50 to 70, an a* value of −4 to −2, and a b* value of −10 to −7, which are represented by the L*a*b* color system (JIS Z8729). This chromium (III) carbonate is preferably completely dissolved within 30 minutes when the chromium (III) carbonate is added, in an amount corresponding to a Cr content of 1 g, to 1 liter of an aqueous solution of hydrochloric acid having a pH of 0.2 at a temperature of 25° C. This chromium (III) carbonate is preferably obtained by contacting an aqueous solution of carbonate and an aqueous solution containing trivalent chromium at a pH of 6 to 12 under the condition of a reaction liquid temperature of 0° C. or more and less than 50° C. Also, preferably, after production of the chromium (III) carbonate, filtration is performed, and the chromium (III) carbonate is washed with water until the conductivity of the filtrate is 5 mS/cm or less.

Abstract translation: 本发明的碳酸铬（III）表现出固态的浅蓝色。 该碳酸铬（III）的L *值为50〜70，a *值为-4〜-2，ab *为-10〜-7，由L * a * b *颜色 系统（JIS Z8729）。 当碳酸铬（III）以相当于Cr含量的1g的量添加碳酸铬（III）至1升pH为0.2的盐酸水溶液时，优选在30分钟内完全溶解该碳酸铬（III） 该温度为25℃。这种碳酸铬（III）优选通过在反应液温度为0℃的条件下使碳酸盐水溶液和含有三价铬的水溶液在6至12的pH下接触 以上且小于50℃。此外，优选在碳酸铬（III）的制造之后，进行过滤，并用水洗涤碳酸铬（III），直至滤液的电导率为5mS / cm 或更少。

公开(公告)号：US4784058A

公开(公告)日：1988-11-15

申请号：US80477

申请日：1987-07-31

Applicant: Noriharu Nakagawa ,  Masanobu Kurumaji ,  Kazuyuki Kijayama ,  Koichi Fukushima ,  Nobuo Kimura ,  Satoshi Hirota ,  Hiroaki Kondo ,  Hiroyuki Kuwano ,  Toshiaki Akita ,  Tsutomu Sano

Inventor： Noriharu Nakagawa ,  Masanobu Kurumaji ,  Kazuyuki Kijayama ,  Koichi Fukushima ,  Nobuo Kimura ,  Satoshi Hirota ,  Hiroaki Kondo ,  Hiroyuki Kuwano ,  Toshiaki Akita ,  Tsutomu Sano

IPC: B30B15/24

CPC classification number: B30B15/245

Abstract: A press working control method for controlling the press working operation of a press having a pressure cylinder for applying a working pressure to a workpiece, a press slide operatively connected to the pressure cylinder and carrying a movable die, a bed fixedly mounted with a fixed die, a plurality of control cylinders supporting the press slide in a level position during the press working operation, and a press control system for carrying out the press working control method. The press control system comprises a first pressure detector for detecting the operative pressure of the pressure cylinder, quick-response control valves each for regulating the height of the control cylinder, height detectors each for detecting the height of the control cylinder, second pressure detectors each for detecting the operative pressure of the control cylinder, servovalves each for detecting the operative pressure of the control cylinder, and a control unit including a computer for deciding manipulated variables for the height and operative pressure control of the control cylinders on the basis of data obtained by the detectors. The respective heights of the control cylinders are regulated individually so that the press slide is maintained in a level position during the press working operation, while the respective operative pressure of the control cylinders are regulated so that a desired working pressure is applied to the workpiece.

Abstract translation: 一种压制工作控制方法，用于控制具有用于向工件施加工作压力的压力缸的压力机的冲压加工操作，可操作地连接到压力缸并承载可动模具的压力机滑块，固定地安装有固定模具的床 在冲压加工动作期间将压入滑块支撑在水平位置的多个控制缸，以及用于进行冲压加工控制的压力控制系统。 压力控制系统包括用于检测压力缸的工作压力的第一压力检测器，用于调节控制气缸高度的快速响应控制阀，用于检测控制气缸高度的高度检测器，每个 用于检测控制气缸的操作压力，用于检测控制气缸的操作压力的伺服阀，以及包括计算机的控制单元，用于基于获得的数据来确定控制气缸的高度和操作压力控制的操纵变量 由检测器。 控制缸的相应高度被单独调节，使得在压力加工操作期间压力机滑块保持在水平位置，同时调节控制气缸的相应操作压力，使得对工件施加期望的工作压力。