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21. 发明授权

KR101536400B1 용접부 내식성이 우수한 페라이트계 스테인리스 강관 및 그 제조방법 有权
标题翻译：具有优异耐腐蚀性的焊接不锈钢管接头及其制造方法
公开(公告)号：KR101536400B1
公开(公告)日：2015-07-13
申请号：KR1020130064909
申请日：2013-06-05
申请人： 주식회사 포스코
发明人： 엄상호 , 김상석 , 김청하
IPC分类号： C22C38/00 , C21D8/10 , B23K9/028
摘要： 본발명은옥외환경에서의난간, 펜스, 수건걸이등의건축외장부재로사용되는페라이트계스테인리스강관의표면광택을향상시키고자하는것이다. 특히, 용접부의가공성은향상은물론이고, 용접부의내식성과의장성이개선된페라이트계스테인리스강관과그 제조방법을제공하고자하는것이다.

22. 发明授权

KR102131556B1 용접장치 및 용접방법 有权
公开(公告)号：KR102131556B1
公开(公告)日：2020-07-07
申请号：KR1020190046517
申请日：2019-04-22
申请人： 주식회사 포스코
发明人： 이원배 , 김청하
IPC分类号： B23K9/12 , B23K9/32 , B23K37/02 , B23K9/18 , B23K1/20

23. 发明授权

KR101720087B1 피로 특성이 우수한 용접이음부 및 이의 제조 방법 有权
标题翻译：具有优异疲劳特性的焊接接头及其制造方法
公开(公告)号：KR101720087B1
公开(公告)日：2017-03-28
申请号：KR1020160067841
申请日：2016-06-01
申请人： 주식회사 포스코
发明人： 배규열 , 신현정 , 김청하 , 이태영
IPC分类号： C21D9/50 , C21D10/00 , B23K101/00 , B23K101/18
CPC分类号： C21D9/50 , C21D10/00
摘要： 피로특성이우수한용접이음부및 이의제조방법이개시된다. 본발명의일 실시예에따른피로특성이우수한용접이음부는연결부가겹치도록배치되는복수의강판들사이에용접에의해형성되는용접금속및 상기용접금속의단부에형성되며, 표층의비커스경도값이 200Hv 이상인재용융부를포함한다.
摘要翻译：公开了一种具有优良疲劳特性的焊接接头及其制造方法。根据本发明的实施方式示例性优异的焊接接头的疲劳特性被形成在焊接金属，并通过该多个被布置钢板之间的焊接所形成的焊接金属的端部，以便连接添加重叠，表面层的维氏硬度并且200Hv或更高的距离的熔化部分。

24. 发明授权

KR101360661B1 테일러드 블랭크 결합구조를 갖는 핫스탬핑 부재 有权
标题翻译：具有连接空调结构的热冲压件
公开(公告)号：KR101360661B1
公开(公告)日：2014-02-10
申请号：KR1020120151552
申请日：2012-12-21
申请人： 주식회사 포스코
发明人： 엄상호 , 김청하 , 최종원
IPC分类号： B23K31/02 , B21D22/02
摘要： A hot stamping member having a connecting structure of a tailored blank, according to an embodiment of the present invention is disclosed. A hot stamping member which has a connecting structure of a tailored blank which connects a first member and a second member, provided with different thickness and material includes: a first member; a second member which has a bigger hardness than the first member; and a welding portion which weld together the first and second members. The multiplication of a hardness and a thickness of the welding portion is bigger than the multiplication of a hardness and a thickness of the first or the second member. [Reference numerals] (AA) Hardness(Hv) or fracture strength(Hv·mm); (BB) Hardness(Hv); (CC) Fracture strength(Hxt)
摘要翻译：公开了根据本发明实施例的具有定制坯料的连接结构的热冲压件。具有连接第一构件和第二构件的定制坯料的连接结构的热冲压构件具有不同的厚度和材料，包括：第一构件; 具有比第一构件更大的硬度的第二构件; 以及将第一和第二构件焊接在一起的焊接部。焊接部分的硬度和厚度的乘积大于第一或第二部件的硬度和厚度的乘积。（AA）硬度（Hv）或断裂强度（Hv·mm）; （BB）硬度（Hv）; （CC）断裂强度（Hxt）

25. 发明公开

KR1020130111748A 아연도금강판의 용접방법 有权
标题翻译：镀锌钢焊接方法
公开(公告)号：KR1020130111748A
公开(公告)日：2013-10-11
申请号：KR1020120033866
申请日：2012-04-02
申请人： 주식회사 포스코
发明人： 김영곤 , 우인수 , 김청하
IPC分类号： B23K26/20
摘要： PURPOSE: A galvanized steel sheet welding method is provided to select a proper welding method and to obtain decisive process conditions, thereby suppressing a liquid metal embrittlement phenomenon generated when welding a galvanized steel sheet as it as possible. CONSTITUTION: A galvanized steel sheet welding method includes the following steps of: preparing a target galvanized steel sheet; and welding the galvanized steel sheet with a disc laser. The power of the disc laser is 3-5kW, and the welding speed is 7-15 mpm. The galvanized steel sheet is welded to make a welding heat-affected zone have a width of 0.2 mm or less from a melting boundary line and to make the width of a surface bead to be 0.3-0.8 mm. The galvanized steel sheet is high-manganese steel sheet.
摘要翻译：目的：提供镀锌钢板焊接方法来选择适当的焊接方法并获得决定性的工艺条件，从而抑制当镀锌钢板尽可能地焊接时产生的液态金属脆化现象。构成：镀锌钢板焊接方法包括以下步骤：制备目标镀锌钢板; 并用盘式激光焊接镀锌钢板。光盘激光功率为3-5kW，焊接速度为7-15mpm。对镀锌钢板进行焊接，使熔融边界线的宽度为0.2mm以下的焊接热影响区域，使表面焊道的宽度为0.3〜0.8mm。镀锌钢板为高锰钢板。

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