公开(公告)号：US07597737B2

公开(公告)日：2009-10-06

申请号：US10574839

申请日：2004-04-30

申请人： Ken-ichiro Hara ,  Hidemi Takao ,  Setsuo Mishima ,  Etsuo Fujita

发明人： Ken-ichiro Hara ,  Hidemi Takao ,  Setsuo Mishima ,  Etsuo Fujita

IPC分类号： C21C7/10 ,  C22B9/04 ,  C22B9/16

CPC分类号： C21C7/0006 ,  C21C7/10 ,  C21C2300/08 ,  C22B9/04 ,  C22B26/22 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/105 ,  C22C38/12 ,  C22C38/14 ,  C22C38/42

摘要： A method for producing a steel ingot, which comprises an Mg oxide forming step of preparing a molten steel containing Mg in an amount sufficient for the molten steel to have an oxide composition having MgO as a primary component and a dissociation step of keeping the pressure of the atmosphere around the molten steel to be lower than that in the Mg oxide forming step, to thereby dissociate MgO to Mg and oxygen and reduce the content of Mg in the steel to 50% or less of that in the Mg oxide forming step through the diffusion thereof into a gas phase. A preferred method further involves a solidifying step.

摘要翻译： 一种钢锭的制造方法，其特征在于，包括Mg氧化物形成工序，所述Mg氧化物形成工序是将含有足够量的含有Mg的含有Mg的氧化物组合物作为主要成分的Mg的钢水， 钢水周围的气氛低于Mg氧化物形成工序中的气氛，由此将MgO分解为Mg和氧，并将钢中的Mg含量降低至Mg氧化物形成工序中的Mg的含量的50％以下 其扩散进入气相。 优选的方法还包括固化步骤。

公开(公告)号：US07445678B2

公开(公告)日：2008-11-04

申请号：US10715568

申请日：2003-11-19

申请人： Setsuo Mishima ,  Hidemi Takao ,  Ken-ichiro Hara ,  Etsuo Fujita

发明人： Setsuo Mishima ,  Hidemi Takao ,  Ken-ichiro Hara ,  Etsuo Fujita

IPC分类号： C22C3/00 ,  C22C29/16 ,  C21D3/00 ,  C21B7/04

CPC分类号： C22C38/004 ,  C21C7/04 ,  C22B9/20 ,  C22C38/06 ,  C22C38/105 ,  C22C38/12 ,  C22C38/14

摘要： Disclosed is a method of producing maraging steel, which includes producing a consumable electrode for vacuum remelting; and subjecting the consumable electrode to the vacuum remelting. The consumable electrode contains not less 5 ppm Mg. Disclosed is also a maraging steel containing, by mass %, at least, from more than zero to less than 10 ppm Mg, less than 10 ppm oxygen, and less than 15 ppm nitrogen. The steel contains also nitride inclusions having a maximum length of not more than 15 μm and oxide inclusions having a maximum length of not more than 20 μm. Regarding the oxide inclusions, a content rate of spinel form inclusions having a length of not less than 10 μm to a total content of the spinel form inclusions having a length of not less than 10 μm and alumina inclusions having a length of not less than 10 μm exceeds 0.33 (i.e. 33%).

摘要翻译： 公开了一种生产马氏体时效钢的方法，其包括生产用于真空重熔的消耗电极; 并对消耗性电极进行真空重熔。 消耗电极含有不少于5ppm的Mg。 公开了一种马氏体时效钢，其质量％至少含有从零到小于10ppm的Mg，小于10ppm的氧和小于15ppm的氮。 该钢还含有最大长度不大于15μm的氮化物夹杂物和最大长度不大于20μm的氧化物夹杂物。 关于氧化物夹杂物，长度不小于10μm的尖晶石型夹杂物的总长度不小于10μm的尖晶石型夹杂物的含量率和长度不小于10的氧化铝夹杂物 妈妈超过0.33（即33％）。

公开(公告)号：US20070039418A1

公开(公告)日：2007-02-22

申请号：US10574839

申请日：2004-04-30

申请人： Ken-ichiro Hara ,  Hidemi Takao ,  Setsuo Mishima ,  Etsuo Fujita

发明人： Ken-ichiro Hara ,  Hidemi Takao ,  Setsuo Mishima ,  Etsuo Fujita

IPC分类号： C21C7/10

CPC分类号： C21C7/0006 ,  C21C7/10 ,  C21C2300/08 ,  C22B9/04 ,  C22B26/22 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/105 ,  C22C38/12 ,  C22C38/14 ,  C22C38/42

摘要： A method for producing a steel ingot, which comprises an Mg oxide forming step of preparing a molten steel containing Mg in an amount sufficient for the molten steel to have an oxide composition having MgO as a primary component and a dissociation step of keeping the pressure of the atmosphere around the molten steel to be lower than that in said Mg oxide forming step, to thereby dissociate MgO to Mg and oxygen and reduce the content of Mg in the steel to 50% or less of that in the Mg oxide forming step through the diffusion thereof into a gas phase; and a preferred method further comprising a solidifying step, which comprises an Mg oxide forming step of preparing a first molten steel containing Mg in an amount sufficient for the molten steel to have an oxide composition having MgO as a primary component, a step of solidifying the molten steel, and a dissociation step of melting the resultant solid again under a pressure of an atmosphere lower than that in the case of the first molten steel, to thereby dissociate MgO to Mg and oxygen and reduce the content of Mg in the steel to 50% or less of that in the above solid before re-melting through the diffusion thereof into a gas phase.

摘要翻译： 一种钢锭的制造方法，其特征在于，包括Mg氧化物形成工序，所述Mg氧化物形成工序是将含有足够量的含有Mg的含有Mg的氧化物组合物作为主要成分的Mg的钢水， 钢水周围的气氛低于Mg氧化物形成工序中的气氛，从而将MgO离解为Mg和氧，并将钢中的Mg含量降低至Mg氧化物形成步骤中的Mg的含量的50％以下，通过 其扩散到气相中; 优选的方法还包括固化步骤，该固化步骤包括Mg氧化物形成步骤，其制备含有足够量的含有Mg的量的具有MgO作为主要组分的氧化物组合物的Mg的第一钢水， 以及在比第一钢水低的气氛的压力下再次熔融所得固体的解离步骤，从而将MgO离解为Mg和氧，并将钢中的Mg含量降低至50 在通过其扩散进入气相再熔融之前，在上述固体中的百分比或更少。

公开(公告)号：US09574250B2

公开(公告)日：2017-02-21

申请号：US14112171

申请日：2012-04-24

申请人： Shinya Nagao ,  Etsuo Fujita

发明人： Shinya Nagao ,  Etsuo Fujita

IPC分类号： C21D8/06 ,  B21J1/04 ,  B21J1/06 ,  B21K1/10 ,  C21D6/00 ,  C21D7/13 ,  C21D8/00 ,  C21D9/28

CPC分类号： C21D8/065 ,  B21J1/04 ,  B21J1/06 ,  B21K1/10 ,  C21D6/004 ,  C21D7/13 ,  C21D8/005 ,  C21D9/28 ,  C21D2211/001

摘要： Provided is a method for fabricating a stepped forged material that can realize a uniform microscopic structure in both the large diameter flange portion and the small diameter shaft portion. This method for fabricating a stepped forged material comprises the following steps: a step for obtaining a primary forged material in which an austenite stainless steel billet is heated to 1000-1080° C., and, without any further heating, the material is forged by means of reciprocal forging into a round rod having along the entire length thereof a forging ratio of 1.5 or greater; a step for obtaining a secondary forged material, that forms the large diameter flange portion and the small diameter shaft portion, in which without reheating, the small diameter shaft portion is formed by means of reciprocal forging at a temperature where the surface temperature of the primary forged material never falls more than 200° C. lower than the abovementioned material heating temperature and the forging is completed before the surface temperature of the final forged portion falls more than 300° C. lower than the abovementioned heating temperature; and a step for performing a solution heat treatment in which the secondary forged material is heated to 1040-1100° C. for 30 minutes or longer.

摘要翻译： 提供一种在大直径凸缘部分和小直径轴部分中实现均匀的微观结构的阶梯式锻造材料的制造方法。 用于制造阶梯式锻造材料的方法包括以下步骤：获得将奥氏体不锈钢坯料加热至1000-1080℃的初级锻造材料的步骤，并且在不进一步加热的情况下，通过 在锻造比为1.5以上的往复锻造方法中，锻造成整个长度的圆棒; 形成大直径凸缘部和小直径轴部的第二锻造材料的步骤，其中，在不进行再加热的情况下，通过往复锻造而形成小直径轴部，该温度是在初级 锻造材料从上述材料加热温度下降到200℃以下，在最终锻造部件的表面温度比上述加热温度低300℃以下完成锻造。 以及将二次锻造材料加热至1040〜1100℃的固溶热处理30分钟以上的工序。

公开(公告)号：US08498806B2

公开(公告)日：2013-07-30

申请号：US13819248

申请日：2012-02-08

申请人： Ryo Fukano ,  Etsuo Fujita ,  Masao Ando

发明人： Ryo Fukano ,  Etsuo Fujita ,  Masao Ando

IPC分类号： G01C21/00

CPC分类号： E02F9/26 ,  E02F9/261 ,  E02F9/264

摘要： In a hydraulic shovel positional guidance system, an optimal work position calculation unit is configured to calculate an optimal work position of a main vehicle body where a diggable range in which a target surface and an operability range overlap is largest. A display unit is configured to display a guidance picture showing the optimal work position.

摘要翻译： 在液压挖掘机位置引导系统中，最优工作位置计算单元被配置为计算目标表面和可操作范围重叠的可挖掘范围最大的主车体的最佳工作位置。 显示单元被配置为显示示出最佳工作位置的引导图像。

公开(公告)号：US20130158797A1

公开(公告)日：2013-06-20

申请号：US13819471

申请日：2012-02-08

申请人： Ryo Fukano ,  Azumi Nomura ,  Takashi Kurihara ,  Etsuo Fujita ,  Masao Ando ,  Toshihiro Koide

发明人： Ryo Fukano ,  Azumi Nomura ,  Takashi Kurihara ,  Etsuo Fujita ,  Masao Ando ,  Toshihiro Koide

IPC分类号： E02F9/20

CPC分类号： E02F9/2025 ,  E02F9/264 ,  G01C21/00

摘要： A calculation unit of a hydraulic shovel display system sets a predetermined display range displayed as a guidance picture for land shape data. The guidance picture shows a cross section of a target surface included in a display range as seen from a side of a main vehicle body, and a current position of the hydraulic shovel. The calculation unit calculates a position of a start point nearest the main vehicle body and a position of an end point set apart from the start point by a maximum reach length of the work machine in the cross section of the target surface as seen from the side based on land shape data, work machine data and a current position of the main vehicle body. The calculation unit calculates a predetermined reference point of the display range based on the positions of the start point and the end point.

摘要翻译： 液压挖掘机显示系统的计算单元设置显示为陆地数据的引导图像的预定显示范围。 引导图示出了从主车身侧观察的显示范围内的目标表面的横截面以及液压挖掘机的当前位置。 计算单元从目标表面的横截面中计算最接近主车身的起始点的位置和从起点设定的终点的位置乘以目标表面的横截面中的作业机器的最大到达长度 基于陆地形状数据，作业机床数据和主车体的当前位置。 计算单元基于起点和终点的位置来计算显示范围的预定参考点。

公开(公告)号：US20130158786A1

公开(公告)日：2013-06-20

申请号：US13819260

申请日：2012-02-08

申请人： Ryo Fukano ,  Azumi Nomura ,  Takashi Kurihara ,  Etsuo Fujita ,  Masao Ando ,  Toshihiro Koide

发明人： Ryo Fukano ,  Azumi Nomura ,  Takashi Kurihara ,  Etsuo Fujita ,  Masao Ando ,  Toshihiro Koide

IPC分类号： E02F9/26

CPC分类号： E02F9/261 ,  E02F3/43 ,  E02F9/2045 ,  E02F9/2054 ,  E02F9/22 ,  E02F9/2221 ,  E02F9/26 ,  E02F9/264 ,  G01C21/00 ,  G01C21/20

摘要： In a display system in an excavator, a position of an upper boundary line and a position of a lower boundary line are calculated. The upper boundary line indicates a height of a top of a cross section of a display object surface. The lower boundary line indicates a height of a bottom of the cross section of the display object surface. When the current position of the excavator is between the upper boundary line and the lower boundary line, a predetermined reference point of a display range is set to a predetermined position between the upper and lower boundary lines. When the current position of the excavator is above the upper boundary line, the reference point is set above the predetermined position. When the current position of the excavator is below the lower boundary line, the reference point is set below the predetermined position.

摘要翻译： 在挖掘机的显示系统中，计算上边界的位置和下边界线的位置。 上边界线表示显示对象表面的横截面的顶部的高度。 下边界线表示显示对象表面的横截面的底部的高度。 当挖掘机的当前位置在上边界线和下边界线之间时，将显示范围的预定参考点设置在上边界线和下边界线之间的预定位置。 当挖掘机的当前位置高于上边界线时，将参考点设定在预定位置之上。 当挖掘机的当前位置低于下边界线时，将参考点设定在预定位置以下。

公开(公告)号：US20140041768A1

公开(公告)日：2014-02-13

申请号：US14112171

申请日：2012-04-24

申请人： Shinya Nagao ,  Etsuo Fujita

发明人： Shinya Nagao ,  Etsuo Fujita

IPC分类号： C21D8/06

CPC分类号： C21D8/065 ,  B21J1/04 ,  B21J1/06 ,  B21K1/10 ,  C21D6/004 ,  C21D7/13 ,  C21D8/005 ,  C21D9/28 ,  C21D2211/001

摘要： Provided is a method for fabricating a stepped forged material that can realize a uniform microscopic structure in both the large diameter flange portion and the small diameter shaft portion. This method for fabricating a stepped forged material comprises the following steps: a step for obtaining a primary forged material in which an austenite stainless steel billet is heated to 1000-1080° C., and, without any further heating, the material is forged by means of reciprocal forging into a round rod having along the entire length thereof a forging ratio of 1.5 or greater; a step for obtaining a secondary forged material, that forms the large diameter flange portion and the small diameter shaft portion, in which without reheating, the small diameter shaft portion is formed by means of reciprocal forging at a temperature where the surface temperature of the primary forged material never falls more than 200° C. lower than the abovementioned material heating temperature and the forging is completed before the surface temperature of the final forged portion falls more than 300° C. lower than the abovementioned heating temperature; and a step for performing a solution heat treatment in which the secondary forged material is heated to 1040-1100° C. for 30 minutes or longer.

摘要翻译： 提供一种在大直径凸缘部分和小直径轴部分中实现均匀的微观结构的阶梯式锻造材料的制造方法。 用于制造阶梯式锻造材料的方法包括以下步骤：获得将奥氏体不锈钢坯料加热至1000-1080℃的初级锻造材料的步骤，并且在不进一步加热的情况下，通过 在锻造比为1.5以上的往复锻造方法中，锻造成整个长度的圆棒; 形成大直径凸缘部和小直径轴部的第二锻造材料的步骤，其中，在不进行再加热的情况下，通过往复锻造而形成小直径轴部，该温度是在初级 锻造材料从上述材料加热温度下降到200℃以下，在最终锻造部件的表面温度比上述加热温度低300℃以下完成锻造。 以及将二次锻造材料加热至1040〜1100℃的固溶热处理30分钟以上的工序。

公开(公告)号：US20130158787A1

公开(公告)日：2013-06-20

申请号：US13819456

申请日：2012-02-08

申请人： Azumi Nomura ,  Takashi Kurihara ,  Etsuo Fujita ,  Masao Ando

发明人： Azumi Nomura ,  Takashi Kurihara ,  Etsuo Fujita ,  Masao Ando

IPC分类号： E02F9/26

CPC分类号： E02F9/26 ,  E02F9/264

摘要： A display system in a hydraulic shovel has a calculation unit and a display unit. The calculation unit is configured to calculate a distance between a design surface and a position closest to the design surface among positions of a blade edge of a bucket in a widthwise direction of the blade edge based on positional information for the blade edge and the design surface. The display unit is configured and arranged to display a guidance picture. The guidance picture includes an image showing the positional relationship between the design surface and the blade edge of the bucket, and information indicating the distance between the design surface and the position closest to the design surface.

摘要翻译： 液压挖掘机中的显示系统具有计算单元和显示单元。 计算单元被配置为基于叶片边缘的位置信息和设计表面来计算在叶片边缘的宽度方向上的铲斗的叶片边缘的位置之间的设计表面和最接近设计表面的位置之间的距离 。 显示单元被配置和布置成显示引导图像。 引导图像包括示出设计表面和铲斗边缘之间的位置关系的图像，以及指示设计表面与最靠近设计表面的位置之间的距离的信息。

公开(公告)号：US20130158785A1

公开(公告)日：2013-06-20

申请号：US13819248

申请日：2012-02-08

申请人： Ryo Fukano ,  Etsuo Fujita ,  Masao Ando

发明人： Ryo Fukano ,  Etsuo Fujita ,  Masao Ando

IPC分类号： E02F9/26

CPC分类号： E02F9/26 ,  E02F9/261 ,  E02F9/264

摘要： In a hydraulic shovel positional guidance system, an optimal work position calculation unit is configured to calculate an optimal work position of a main vehicle body where a diggable range in which a target surface and an operability range overlap is largest. A display unit is configured to display a guidance picture showing the optimal work position.

摘要翻译： 在液压挖掘机位置引导系统中，最优工作位置计算单元被配置为计算目标表面和可操作范围重叠的可挖掘范围最大的主车体的最佳工作位置。 显示单元被配置为显示示出最佳工作位置的引导图像。