公开(公告)号：US09534284B2

公开(公告)日：2017-01-03

申请号：US14517526

申请日：2014-10-17

申请人： DK-LOK CORPORATION ,  Sam Rae Jung

发明人： Eun Sik Noh ,  Sam Rae Jung

IPC分类号： C23C8/56 ,  C23C8/04 ,  C21D1/06 ,  C21D1/46 ,  C23C8/50

CPC分类号： C23C8/04 ,  C21D1/06 ,  C21D1/46 ,  C21D9/40 ,  C23C8/50 ,  C23C8/56 ,  F16L19/08 ,  F16L19/083

摘要： This invention relates to a surface heat treatment method in a salt bath at low temperature, suitable for partially hardening the surface of a workpiece through heat treatment, including plating the surface of a workpiece with a first metal layer; partially peeling the first metal layer; heat treating the workpiece at a temperature of 400 to 500° C. for a predetermined period of time; and totally peeling the first metal layer. Thereby, low-temperature heat treatment is effective at heat treating the workpiece while minimizing deterioration of corrosion resistance.

摘要翻译： 本发明涉及一种在低温盐浴中的表面热处理方法，适用于通过热处理对工件的表面进行部分硬化，包括用第一金属层电镀工件的表面; 部分剥离第一金属层; 在400〜500℃的温度下对工件进行热处理预定的时间; 并完全剥离第一金属层。 由此，低温热处理在对工件进行热处理同时最小化耐蚀性劣化的同时是有效的。

公开(公告)号：US09631747B2

公开(公告)日：2017-04-25

申请号：US14514998

申请日：2014-10-15

申请人： DK-LOK CORPORATION ,  Sam Rae Jung

发明人： Eun Sik Noh ,  Sam Rae Jung

IPC分类号： C23C8/56 ,  F16L19/04 ,  C23C8/02 ,  C23C8/80 ,  C23C28/00 ,  C25D5/02 ,  C25D5/10 ,  C25D5/12 ,  C25D5/48 ,  C25D5/50 ,  F16L58/18 ,  F16L19/10

CPC分类号： F16L19/04 ,  C23C8/02 ,  C23C8/56 ,  C23C8/80 ,  C23C28/321 ,  C23C28/322 ,  C23C28/34 ,  C25D5/02 ,  C25D5/10 ,  C25D5/12 ,  C25D5/48 ,  C25D5/50 ,  F16L19/103 ,  F16L58/184

摘要： This invention relates to a partially carbonitriding heat treated stainless steel ferrule, having a first region with a first hardness and a second region with a second hardness, wherein the first region includes a nitrogen layer having a nitrogen concentration higher than a carbon concentration, and a carbon layer formed under the nitrogen layer and having a carbon concentration higher than a nitrogen concentration, so that the first hardness is greater than the second hardness. Thereby, partial heat treatment is effective at preventing rotational torque of the region, except for the portion to be heat treated, from increasing due to the total hardening.

公开(公告)号：US20150176113A1

公开(公告)日：2015-06-25

申请号：US14517526

申请日：2014-10-17

申请人： Sam Rae JUNG ,  DK-LOK CORPORATION

发明人： Eun Sik Noh ,  Sam Rae Jung

IPC分类号： C23C8/04 ,  C23C8/56 ,  C23C8/50

CPC分类号： C23C8/04 ,  C21D1/06 ,  C21D1/46 ,  C21D9/40 ,  C23C8/50 ,  C23C8/56 ,  F16L19/08 ,  F16L19/083

摘要： This invention relates to a surface heat treatment method in a salt bath at low temperature, suitable for partially hardening the surface of a workpiece through heat treatment, including plating the surface of a workpiece with a first metal layer; partially peeling the first metal layer; heat treating the workpiece at a temperature of 400 to 500° C. for a predetermined period of time; and totally peeling the first metal layer. Thereby, low-temperature heat treatment is effective at heat treating the workpiece while minimizing deterioration of corrosion resistance.

摘要翻译： 本发明涉及一种在低温盐浴中的表面热处理方法，适用于通过热处理对工件的表面进行部分硬化，包括用第一金属层电镀工件的表面; 部分剥离第一金属层; 在400〜500℃的温度下对工件进行热处理预定的时间; 并完全剥离第一金属层。 由此，低温热处理在对工件进行热处理同时最小化耐蚀性劣化的同时是有效的。

公开(公告)号：US20150107720A1

公开(公告)日：2015-04-23

申请号：US14517593

申请日：2014-10-17

申请人： Sam Rae JUNG ,  DK-LOK CORPORATION

发明人： Eun Sik Noh ,  Sam Rae Jung

IPC分类号： C23C8/54 ,  C23C8/04

CPC分类号： C23C8/54 ,  C23C8/02 ,  C23C8/04

摘要： This invention relates to a partially carbonitriding heat treated stainless steel ferrule, having a first region with a first hardness and a second region with a second hardness, wherein the first region includes a nitrogen layer having a nitrogen concentration higher than a carbon concentration, and a carbon layer formed under the nitrogen layer and having a carbon concentration higher than a nitrogen concentration, so that the first hardness is greater than the second hardness. Thereby, partial heat treatment is effective at preventing rotational torque of the region, except for the portion to be heat treated, from increasing due to the total hardening.

公开(公告)号：US20150107719A1

公开(公告)日：2015-04-23

申请号：US14179913

申请日：2014-02-13

申请人： Sam Rae Jung ,  DK-LOK CORPORATION

发明人： Sam Rae Jung ,  Eun Sik Noh

IPC分类号： C21D1/68 ,  C21D9/40 ,  C23C8/44 ,  C21D1/06 ,  C23C8/48 ,  C23C8/04

CPC分类号： C21D1/68 ,  C21D1/06 ,  C21D1/46 ,  C21D9/40 ,  C21D2211/004 ,  C21D2251/00 ,  C23C8/02 ,  C23C8/04 ,  C23C8/44 ,  C23C8/48 ,  C23C8/54 ,  C23C8/80 ,  C23F1/16 ,  C23F1/44 ,  C25D5/10 ,  C25D5/12 ,  C25D5/48 ,  C25D5/50 ,  F16L19/103

摘要： Disclosed herein is a partial heat treatment method using a double metal layer, in which a surface of a workpiece is hardened by heat treatment, including the steps of: primarily plating the surface of the workpiece with a first metal layer; secondarily plating the surface of the first metal layer with a second metal layer; partially stripping the first metal layer and the second metal layer to expose a part of the surface of the workpiece; heat-treating the workpiece to harden the exposed surface of the workpiece; and removing the first metal layer and the second metal layer remaining on the surface of the workpiece.

摘要翻译： 本文公开了使用双金属层的部分热处理方法，其中通过热处理使工件的表面硬化，包括以下步骤：主要用第一金属层电镀工件的表面; 二次用第二金属层电镀第一金属层的表面; 部分地剥离第一金属层和第二金属层以暴露工件表面的一部分; 对工件进行热处理，硬化工件的露出面; 以及去除残留在工件表面上的第一金属层和第二金属层。

公开(公告)号：US09695498B2

公开(公告)日：2017-07-04

申请号：US14517593

申请日：2014-10-17

申请人： DK-LOK CORPORATION ,  Sam Rae Jung

发明人： Eun Sik Noh ,  Sam Rae Jung

IPC分类号： C23C8/54 ,  C23C8/04 ,  C23C8/02

CPC分类号： C23C8/54 ,  C23C8/02 ,  C23C8/04

摘要： This invention relates to a partially carbonitriding heat treated stainless steel ferrule, having a first region with a first hardness and a second region with a second hardness, wherein the first region includes a nitrogen layer having a nitrogen concentration higher than a carbon concentration, and a carbon layer formed under the nitrogen layer and having a carbon concentration higher than a nitrogen concentration, so that the first hardness is greater than the second hardness. Thereby, partial heat treatment is effective at preventing rotational torque of the region, except for the portion to be heat treated, from increasing due to the total hardening.

公开(公告)号：US20150107723A1

公开(公告)日：2015-04-23

申请号：US14514998

申请日：2014-10-15

申请人： Sam Rae Jung ,  DK-LOK Corporation

发明人： Eun Sik Noh ,  Sam Rae Jung

IPC分类号： C23C28/04 ,  F16L19/04 ,  C23C8/56 ,  C23C8/32 ,  C23C8/04

CPC分类号： F16L19/04 ,  C23C8/02 ,  C23C8/56 ,  C23C8/80 ,  C23C28/321 ,  C23C28/322 ,  C23C28/34 ,  C25D5/02 ,  C25D5/10 ,  C25D5/12 ,  C25D5/48 ,  C25D5/50 ,  F16L19/103 ,  F16L58/184

摘要： This invention relates to a partially carbonitriding heat treated stainless steel ferrule, having a first region with a first hardness and a second region with a second hardness, wherein the first region includes a nitrogen layer having a nitrogen concentration higher than a carbon concentration, and a carbon layer formed under the nitrogen layer and having a carbon concentration higher than a nitrogen concentration, so that the first hardness is greater than the second hardness. Thereby, partial heat treatment is effective at preventing rotational torque of the region, except for the portion to be heat treated, from increasing due to the total hardening.

摘要翻译： 本发明涉及具有第一硬度的第一区域和第二硬度的第二区域的部分碳氮共渗热处理的不锈钢套管，其中第一区域包括氮浓度高于碳浓度的氮层，以及 碳层，其具有比氮浓度高的碳浓度，使得第一硬度大于第二硬度。 由此，除了全部硬化以外，部分热处理有效地防止除热处理部分之外的区域的旋转扭矩增加。