公开(公告)号：EP2287360A4

公开(公告)日：2011-07-06

申请号：EP09750567

申请日：2009-05-19

申请人： NETUREN CO LTD ,  NIHON PARKERIZING

发明人： FUKAZAWA KENGO ,  MISAKA YOSHITAKA ,  KAWASAKI KAZUHIRO ,  IKEDA YOSHIHIRO ,  BEPPU MASAAKI ,  SUDA ARATA

IPC分类号： C23C28/04 ,  C21D1/06 ,  C21D1/10 ,  C21D1/70 ,  C23C8/26 ,  C23C8/32 ,  C23C8/38 ,  C23C8/56

CPC分类号： C23C8/32 ,  C21D1/06 ,  C21D1/10 ,  C21D1/70 ,  C21D1/72 ,  C21D2211/004 ,  C21D2221/00 ,  C21D2251/00 ,  C23C8/56 ,  C23C8/80 ,  Y02P10/253

摘要： Providing an iron and steel material having quenched surface part, avoiding oxidation of a compound layer formed on the surface of the iron and steel material due to quenching, its production method, and an induction-quenched component. A quenched iron and steel material 10 comprises an iron and steel material 11, a compound layer 12 formed on the iron and steel material 11, and an antioxidant cover layer 13 formed on the compound layer 12. The iron and steel material 11 has a hardened layer having a given depth, and the surface of the iron and steel material 11 has enhanced hardness. A method for producing the iron and steel material 10 comprises a first step for forming the antioxidant cover layer 13 to cover the compound layer 12 formed on the iron and steel material 11, and a second step for applying induction hardening to the iron and steel material 11 having the compound layer 12 and the antioxidant cover layer 13, with the temperature increased in a given heating time until the given heating temperature is reached, and with cooling immediately performed once the heating temperature is reached.

公开(公告)号：EP2461646A4

公开(公告)日：2015-10-07

申请号：EP10804520

申请日：2010-07-29

申请人： NETUREN CO LTD

发明人： TANAKA YOSHIMASA ,  MISAKA YOSHITAKA ,  ASANO YUJI

IPC分类号： H05B6/36 ,  C21D1/10 ,  C21D1/42 ,  C21D9/40 ,  H05B6/10

CPC分类号： C21D9/40 ,  C21D1/10 ,  C21D1/42 ,  C21D2221/00 ,  H05B6/102 ,  H05B6/36 ,  H05B6/40 ,  H05B6/44 ,  Y02P10/253

摘要： An induction hardening apparatus comprises heating coils (26) that inductively heat different parts of the treatment target portion (A) in an axial direction of the work (12), the work (12) and a heating coil (26) being relatively moved along a circumferential direction (R) of a treatment target portion (A). The heating coil (26) has a zigzag shape in which a bent portion (34) that is opened to one side in the axial direction and a bent portion (35) opened to the other side in the axial direction are alternately continuously arranged in opposed directions along the circumferential direction (R).

公开(公告)号：EP2634571A4

公开(公告)日：2017-02-08

申请号：EP11836357

申请日：2011-10-26

申请人： NETUREN CO LTD

发明人： GOTOH YUJI ,  TAKAOKA NORIYOSHI ,  KAWASAKI KAZUHIRO ,  MISAKA YOSHITAKA

IPC分类号： G01N27/72

CPC分类号： G01N27/80 ,  G01N27/72

摘要： The purpose of the invention is to provide a nondestructive testing method capable of quickly and accurately measuring the quenching depth of a quenching processed material. To achieve this purpose, for example, the following quenching depth measuring method is employed. The quenching depth measuring method is used for measuring the quenching depth in a workpiece and comprises the steps of: magnetizing the workpiece by disposing, in the vicinity of the workpiece, a magnetizer equipped with an exciting coil; detecting, through a detection coil, an induced magnetic field generated by the magnetization; measuring the induced magnetic field as the output voltage of the detection coil; and specifying the thickness of the quenched hardened layer of the workpiece on the basis of known electromagnetic characteristic information of an unquenched material and a fully-quenched material and an output voltage value measured by the detection coil, the unquenched material being made of the same material as the constituent material of the workpiece and being a material on which a quenching process is not performed, the fully-quenched material being a material on which the quenching process is performed.

摘要翻译： 本发明的目的是提供能够快速且准确地测量淬火处理材料的淬火深度的非破坏性测试方法。 为了达到这个目的，例如采用以下的淬火深度测定方法。 淬火深度测量方法用于测量工件的淬火深度，包括以下步骤：通过在工件附近设置配备有励磁线圈的磁化器来对工件进行磁化; 通过检测线圈检测由磁化产生的感应磁场; 测量感应磁场作为检测线圈的输出电压; 根据已知的非淬火材料和完全淬火材料的电磁特性信息和由检测线圈测量的输出电压值，确定工件的淬火硬化层的厚度，未淬火材料由相同的材料制成 作为工件的构成材料，作为不进行淬火处理的材料，完全淬火的材料是进行淬火处理的材料。

公开(公告)号：EP2696652A4

公开(公告)日：2015-05-20

申请号：EP12767740

申请日：2012-04-06

申请人： NETUREN CO LTD

发明人： NAKATSU HITOSHI ,  YOSHIOKA MASATO ,  TANAKA YOSHIMASA ,  ITO TSUTOMU ,  KOYANAGI KENJI ,  SAGAE MASAKI ,  ISHII TATSUYA ,  MISAKA YOSHITAKA ,  OGAWA YASUHARU

IPC分类号： H05B6/06 ,  H05B6/10 ,  H05B6/40 ,  H05B6/44

CPC分类号： H05B6/40 ,  H05B6/06 ,  H05B6/101 ,  H05B6/44

摘要： An induction heating device and an induction heating method are provided. The entire areas to be heated of the workpiece, even a large workpiece, can be readily and approximately uniformly heated to a predetermined high temperature, and uniform heating is possible even when the workpiece deforms in a non-uniform manner during heating. When areas to be heated H1, H2 are established on a workpiece W so as to extend in one direction and the areas to be heated H1, H2 are induction-heated, the deformation amount on one edge of the areas to be heated H1, H2 is different from that on the other. This induction heating device includes: heating coils 451 facing a portion of the areas to be heated H1, H2 when the workpiece W is induction-heated; and a relative transfer means for transferring the workpiece W and the heating coils 451 along one direction in a relative manner, and the heating coils 451 are disposed so as to correspond to the areas to be heated H1, H2 during the heating period.