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公开(公告)号：US10022839B2
公开(公告)日：2018-07-17
申请号：US14389841
申请日：2012-11-21
Applicant: Sintokogio, Ltd.
Inventor： Yuji Kobayashi , Akinori Matsui
Abstract: First, it is determined in a determination step by a determination unit whether there is a nitrided layer on a surface of a water-cooled hole of a mold, by using an eddy current sensor. Next, in a shot step, when it is determined in the determination step that there is no nitrided layer, the surface of the water-cooled hole of the mold is shot-peened under a shot condition set according to a base material of the mold, and when it is determined in the determination step that there is the nitrided layer, the surface of the water-cooled hole of the mold is shot-peened under a shot condition which maintains a state where there is the nitrided layer.
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公开(公告)号：US20140373586A1
公开(公告)日：2014-12-25
申请号：US14368373
申请日：2012-10-17
Applicant: SINTOKOGIO, LTD.
Inventor： Yuji Kobayashi , Akinori Matsui
CPC classification number: B24C1/10 , B24B39/006 , B24C3/325 , B24C11/00 , C21D7/06
Abstract: First, a nozzle insertion process in which a nozzle is inserted into a water cooling hole having a small diameter which is provided in a back of a mold is performed. Then, an injection process in which a mixed flow of air having a pressure ranging from 0.1 MPa to 1.0 MPa with an injection particle is jetted from a leading end of a nozzle to a distal portion of the water cooling hole. As a result, a shot peening process is performed on the distal portion of the water cooling hole.
Abstract translation: 首先，进行将喷嘴插入设置在模具背面的具有小直径的水冷却孔中的喷嘴插入工序。 然后，将喷射粒子的压力为0.1MPa〜1.0MPa的空气的混合流从喷嘴的前端喷射到水冷却孔的前端部的喷射处理。 结果，在水冷却孔的远端进行喷丸硬化处理。
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公开(公告)号：US11780052B2
公开(公告)日：2023-10-10
申请号：US17682533
申请日：2022-02-28
Applicant: SINTOKOGIO, LTD.
Inventor： Yuji Kobayashi
CPC classification number: B24C1/10 , B24C11/00 , C21D7/06 , Y10T29/479
Abstract: A shot peening method is disclosed. One method includes performing a first shot peening for applying residual stress to a surface of an object formed of a metal material at a first depth, and performing a second shot peening for applying residual stress to the surface of the object at a second depth deeper than the first depth after the first shot peening. The first shot peening is performed before the object is used at a high temperature and the second shot peening is performed after the object is used at the high temperature, and after a cracking caused by stress due to thermal expansion and contraction of crystal grains occurs in the object. The cracking being deeper than the first depth and shallower than the second depth.
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公开(公告)号：US09149908B2
公开(公告)日：2015-10-06
申请号：US14368373
申请日：2012-10-17
Applicant: SINTOKOGIO, LTD.
Inventor： Yuji Kobayashi , Akinori Matsui
CPC classification number: B24C1/10 , B24B39/006 , B24C3/325 , B24C11/00 , C21D7/06
Abstract: First, a nozzle insertion process in which a nozzle is inserted into a water cooling hole having a small diameter which is provided in a back of a mold is performed. Then, an injection process in which a mixed flow of air having a pressure ranging from 0.1 MPa to 1.0 MPa with an injection particle is jetted from a leading end of a nozzle to a distal portion of the water cooling hole. As a result, a shot peening process is performed on the distal portion of the water cooling hole.
Abstract translation: 首先，进行将喷嘴插入设置在模具背面的具有小直径的水冷却孔中的喷嘴插入工序。 然后，将喷射粒子的压力为0.1MPa〜1.0MPa的空气的混合流从喷嘴的前端喷射到水冷却孔的前端部的喷射处理。 结果，在水冷却孔的远端进行喷丸硬化处理。
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5.发明申请公开(公告)号：US20150128674A1
公开(公告)日：2015-05-14
申请号：US14395918
申请日：2013-06-18
Applicant: Sintokogio, Ltd.
Inventor： Yuji Kobayashi , Akinori Matsui
IPC: B24C1/10
CPC classification number: B24C1/10 , B22D17/22 , B24C3/325 , C21D7/06 , G01N2203/008 , Y10T29/479
Abstract: In a trial peening step, a shot peening process is applied to a back face 40B of a mold 40 in which an opening of a closed-end water cooling hole 42 is formed. Next, in an evaluation step, compressive residual stress and surface roughness of a region shot-peened in the trial peening step are measured and an extent of shot peening treatment in the trial peening step is evaluated based on measurement results. Next, in a peening step, a surface of the water cooling hole 42 in the mold 40 is shot-peened under peening conditions set based on peening conditions for the trial peening step and on evaluation results produced in the evaluation step.
Abstract translation: 在试验硬化步骤中，将喷丸硬化处理应用于其中形成有封闭端水冷却孔42的开口的模具40的背面40B。 接下来，在评价步骤中，测量在试验硬化步骤中喷丸硬化的区域的压缩残余应力和表面粗糙度，并且基于测量结果来评估试验硬化步骤中的喷丸硬化处理的程度。 接下来，在喷丸步骤中，在根据用于试验硬化步骤的喷丸条件设定的喷丸处理条件和评价步骤中产生的评价结果下，对模具40中的水冷却孔42的表面进行喷丸处理。
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Patent Agency Ranking
公开(公告)号：US12217362B2
公开(公告)日：2025-02-04
申请号：US17884619
申请日：2022-08-10
Applicant: SINTOKOGIO, LTD.
Inventor： Yuji Kobayashi
Abstract: A test system includes a computer, a 3D printer, and a test device. The computer obtains shape data which indicates a three-dimensional shape of a workpiece and material data which indicates a material of the workpiece. The 3D printer forms a structural object which has a three-dimensional shape that is indicated by the shape data. The test device performs a test on a pseudo workpiece which has been prepared by adding, to the structural object, a test piece made of the material that is indicated in the material data.
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公开(公告)号：US11045922B2
公开(公告)日：2021-06-29
申请号：US16098164
申请日：2017-05-16
Applicant: SINTOKOGIO, LTD.
Inventor： Kyoichi Iwata , Takuya Koyama , Yuji Kobayashi , Akinori Matsui
IPC: B24C1/10 , G01L1/25 , G01N23/207 , G01L1/00 , G05B19/418
Abstract: A first inspection step nondestructively inspects a surface side state of a treatment target to be subjected to shot processing of shooting shot media at the treatment target and evaluates that the treatment target is failed when an inspection result deviates from a first allowable range predetermined. A condition setting step sets a shot processing condition in response to the inspection result of the first inspection step for the treatment target evaluated as not failed in the first inspection step. A shot processing step performs shot processing of shooting shot media at the treatment target evaluated as not failed in the first inspection step in the shot processing condition set in the condition setting step. A second inspection step after the shot processing step nondestructively inspects a surface side state of the treatment target.
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公开(公告)号：US10520455B2
公开(公告)日：2019-12-31
申请号：US15035024
申请日：2015-11-30
Applicant: SINTOKOGIO, LTD.
Inventor： Yuji Kobayashi , Akinori Matsui
IPC: G01N23/207
Abstract: An apparatus includes an X-ray generating source; a first detecting element adapted to detect intensity of diffracted X-rays of the measuring object at a first detecting position; a second detecting element adapted to detect intensity of the diffracted X-rays of the measuring object at a second detecting position; a moving mechanism adapted to move each of the first detecting element and the second detecting element along a straight line extending in a direction orthogonal to a direction of incidence of the X-rays; a movement control unit adapted to control respective detecting positions of the first detecting element and the second detecting element by driving the moving mechanism; and a stress calculation unit adapted to calculate residual stress of the measuring object based on intensity peaks of the diffracted X-rays detected, respectively, by the first detecting element and the second detecting element each moved by the moving mechanism.
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9.发明授权Shot peening method, shot peening evaluation method, and shot peening evaluation assembly structure 有权喷丸硬化方法，喷丸硬化评价方法，喷丸硬化评价装配结构公开(公告)号：US09486894B2
公开(公告)日：2016-11-08
申请号：US14395918
申请日：2013-06-18
Applicant: Sintokogio, Ltd.
Inventor： Yuji Kobayashi , Akinori Matsui
CPC classification number: B24C1/10 , B22D17/22 , B24C3/325 , C21D7/06 , G01N2203/008 , Y10T29/479
Abstract: In a trial peening step, a shot peening process is applied to a back face 40B of a mold 40 in which an opening of a closed-end water cooling hole 42 is formed. Next, in an evaluation step, compressive residual stress and surface roughness of a region shot-peened in the trial peening step are measured and an extent of shot peening treatment in the trial peening step is evaluated based on measurement results. Next, in a peening step, a surface of the water cooling hole 42 in the mold 40 is shot-peened under peening conditions set based on peening conditions for the trial peening step and on evaluation results produced in the evaluation step.
Abstract translation: 在试验硬化步骤中，将喷丸硬化处理应用于其中形成有封闭端水冷却孔42的开口的模具40的背面40B。 接下来，在评价步骤中，测量在试验硬化步骤中喷丸硬化的区域的压缩残余应力和表面粗糙度，并且基于测量结果来评估试验硬化步骤中的喷丸硬化处理的程度。 接下来，在喷丸步骤中，在根据用于试验硬化步骤的喷丸条件设定的喷丸处理条件和评价步骤中产生的评价结果的情况下，对模具40中的水冷却孔42的表面进行喷丸处理。
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公开(公告)号：US11561140B2
公开(公告)日：2023-01-24
申请号：US17291148
申请日：2019-07-26
Applicant: SINTOKOGIO, LTD.
Inventor： Yuji Kobayashi , Akinori Matsui
IPC: B24C1/10 , G01L1/25 , G01N33/2045
Abstract: A deterioration evaluation method includes a determination step of determining a shot peening condition for imparting a maximum residual stress to an object formed of a metal material; a first shot peening step of performing first shot peening on the object under the shot peening condition; a first measurement step of measuring a first residual stress of the object after the first shot peening step; a second shot peening step of performing second shot peening on the object after the first measurement step under the shot peening condition; a second measurement step of measuring a second residual stress of the object after the second shot peening step; and an evaluation step of evaluating deterioration of the object based on the first residual stress and the second residual stress.
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