公开(公告)号：JP2009041063A

公开(公告)日：2009-02-26

申请号：JP2007206418

申请日：2007-08-08

Applicant: Air Water Inc ,  エア・ウォーター株式会社

Inventor： WATANABE TAKANORI ,  IWAMURA HIDEAKI ,  FUJITA MORIHIRO

IPC: C23C8/26 ,  B21J13/02 ,  C21D1/06 ,  C21D1/76 ,  C23C8/02 ,  C23C8/14 ,  C23C8/18

Abstract: PROBLEM TO BE SOLVED: To provide a method for gas-nitriding a die for warm/hot forming, which has both abrasion resistance and peel resistance, by forming a nitrided layer thereon that keeps the peel resistance and inhibits the propagation of the crack. SOLUTION: This gas-nitriding method includes the steps of: fluorinating an article to be treated by heating and keeping it in an atmosphere containing a fluorine source gas to remove an oxide film from the surface thereof; and nitriding the article by heating and keeping it in an atmosphere containing a nitrogen source gas to make nitrogen diffuse and penetrate into the surface layer part of the article to be treated. Thereby, an abrasion-resistant layer is formed between the surface and at least a depth of 100 μm, and has the hardness of 900 to 1,100 Hv and the concentration of N of 1.5 wt.% or more in any depth. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：为了提供一种用于对具有耐磨性和耐剥离性的热/热成形的模具进行气体氮化的方法，通过在其上形成保护剥离电阻的氮化层，并抑制 裂纹。 该气体氮化方法包括以下步骤：通过加热氟化待处理物品并将其保持在含有氟源气体的气氛中以从其表面除去氧化膜; 并通过加热并将其保持在含有氮源气体的气氛中氮化，使氮气扩散并渗透到被处理物的表层部分。 因此，在表面和至少100μm的深度之间形成耐磨层，其硬度为900〜1100Hv，N的浓度为任意深度的1.5重量％以上。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2013007077A

公开(公告)日：2013-01-10

申请号：JP2011139212

申请日：2011-06-23

Applicant: Air Water Inc ,  エア・ウォーター株式会社

Inventor： NISHIKAWA KOJI ,  FUJIKAWA HISAO ,  IWAMURA HIDEAKI ,  FUJITA MORIHIRO

IPC: C23C8/32 ,  C21D1/06 ,  C21D1/76

Abstract: PROBLEM TO BE SOLVED: To provide a steel product with a diffusion layer having excellent abrasion resistance, excellent fatigue characteristics, and high durability.SOLUTION: The steel product has diffusion layers 2, 3 of carbon and nitrogen formed on the surface of a steel material. The first diffusion layer 2 is formed on the surface layer of the steel product, wherein the carbon concentration is higher than that of the base material 4, and the nitrogen concentration is not lower than 0.5 mass%, with its maximum value in a range of not lower than 1.0 mass% and not higher than 5.0 mass%, and the second diffusion layer 3 is formed between the first diffusion layer 2 and the base material 4 with a thickness of at least 30 μm, wherein the carbon concentration is higher than that of the base material 4 and higher than the nitrogen concentration, and the nitrogen concentration is lower than 0.5 mass%.

Abstract translation: 要解决的问题：为了提供具有优异耐磨性，优异的疲劳特性和高耐久性的扩散层的钢产品。 钢产品在钢材表面形成有碳氮的扩散层2,3。 第一扩散层2形成在钢制品的表面层上，其中碳浓度高于基材4的浓度，氮浓度不低于0.5质量％，其最大值在 不低于1.0质量％且不高于5.0质量％，第二扩散层3形成在第一扩散层2和基材4之间，厚度至少为30μm，其中碳浓度高于 的基底材料4，高于氮浓度，氮浓度低于0.5质量％。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2013007094A

公开(公告)日：2013-01-10

申请号：JP2011140054

申请日：2011-06-24

Applicant: Air Water Inc ,  エア・ウォーター株式会社

Inventor： NISHIKAWA KOJI ,  FUJIKAWA HISAO ,  WATANABE TAKANORI ,  IWAMURA HIDEAKI ,  FUJITA MORIHIRO

IPC: C23C8/26 ,  C21D1/06 ,  C21D1/76 ,  C21D7/06 ,  C21D9/00 ,  C23C8/02 ,  C23C8/80

CPC classification number: C23C8/26 ,  C21D9/40 ,  C23C8/02 ,  C23C8/80

Abstract: PROBLEM TO BE SOLVED: To provide a steel back plate of excellent corrosion resistance and adhesion, for use in a friction material.SOLUTION: The steel product has a nitride compound layer and a nitrogen-diffused layer formed on the surface layer of a base material being a steel. The nitride compound layer comprises a first compound layer formed on the nitrogen-diffused layer and a second compound layer formed on the surface of the first compound layer. The first compound layer is of an ε structure mainly constituted of FeN, and the second compound layer has a higher nitrogen content than the first compound layer and has a surface comprising recessed parts and protruding parts formed thereon, wherein the uneven surface of the second compound layer includes recessed parts with a depth of at least 0.5 μm at such a high density as to be at least 3 locations per 50 μm of the nominal length. The surface layer formed on the steel has excellent surface adhesion and corrosion resistance. Thus, the nitride compound layer of excellent adhesion, an extremely low carbon content, and high corrosion resistance can be formed.

Abstract translation: 要解决的问题：提供用于摩擦材料的耐腐蚀性和粘合性优异的钢背板。 解决方案：钢产品具有氮化物化合物层和形成在基材的表层上的氮扩散层，为钢。 氮化物化合物层包括在氮扩散层上形成的第一化合物层和形成在第一化合物层的表面上的第二化合物层。 第一化合物层为主要由Fe N 3构成的ε结构，第二化合物层的氮含量高于第一化合物层，并且具有包含凹部的表面 和形成在其上的突出部分，其中第二化合物层的不平坦表面包括深度为至少0.5μm的凹陷部分，其密度高至少为每50微米公称长度至少3个位置。 形成在钢上的表面层具有优异的表面粘附性和耐腐蚀性。 因此，可以形成粘合性优异，碳含量极低，耐腐蚀性高的氮化物层。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2010002165A

公开(公告)日：2010-01-07

申请号：JP2008209433

申请日：2008-08-18

Applicant: Air Water Inc ,  エア・ウォーター株式会社

Inventor： WATANABE TAKANORI ,  SAEKI TOMOHIKO ,  FUJITA MORIHIRO

IPC: F27B9/02 ,  C21D1/00 ,  C21D1/06 ,  C21D9/40 ,  C23C8/02 ,  C23C8/24 ,  F16G5/16 ,  F27B9/04 ,  F27B9/26 ,  F27D7/06

Abstract: PROBLEM TO BE SOLVED: To provide a thermal treatment apparatus continuously performing the aging treatment and nitriding of a ring composed of a steel belt and having excellent productivity.
SOLUTION: This thermal treatment apparatus includes: an aging treatment chamber performing the aging treatment and fluorination with a workpiece retained by a heat treating tool; a nitriding chamber nitriding the fluorinated workpiece; an intermediate chamber arranged between the aging treatment chamber and the nitriding chamber and preventing the inclusion of gas in the aging treatment chamber and the nitriding chamber; and a conveying means performing conveyance from the aging treatment chamber to the intermediate chamber and the nitriding chamber while the ring is retained by the heat treating tool. Thereby, thermal treatment with stability and productivity remarkably improved is performed.
COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种连续进行由钢带组成的环的时效处理和氮化并具有优异的生产率的热处理装置。 解决方案：该热处理装置包括：老化处理室，用由热处理工具保持的工件进行时效处理和氟化; 氮化室渗透氟化工件; 中间室，布置在所述时效处理室和所述氮化室之间，并且防止在所述时效处理室和所述氮化室中包含气体; 以及输送装置，当所述环被所述热处理工具保持时，执行从所述时效处理室到所述中间室和所述氮化室的输送。 由此，能够显着提高稳定性和生产率的热处理。 版权所有（C）2010，JPO＆INPIT