公开(公告)号：US20120216920A1

公开(公告)日：2012-08-30

申请号：US13390537

申请日：2010-11-08

申请人： Seung-Man Nam ,  Su-Hong Chae ,  Min-Suck Kwon ,  Hyo-Sub Kim ,  Hee-Joong Im ,  Bo-Ryong Lee ,  Man-Bean Moon

发明人： Seung-Man Nam ,  Su-Hong Chae ,  Min-Suck Kwon ,  Hyo-Sub Kim ,  Hee-Joong Im ,  Bo-Ryong Lee ,  Man-Bean Moon

IPC分类号： C23C8/02 ,  C23C8/10 ,  C21D8/02

CPC分类号： C21D9/0068 ,  B21D22/022 ,  B21D53/88 ,  B23K26/26 ,  B23K2101/006 ,  B23K2101/185 ,  B23K2101/34 ,  B23K2103/04 ,  B23K2103/18 ,  C21D1/673 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D7/02 ,  C21D8/005 ,  C21D8/0221 ,  C21D8/0247 ,  C21D9/46 ,  C21D2251/00 ,  C21D2251/02 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/20 ,  C22C38/22 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/54 ,  C22C38/58 ,  C22C38/60 ,  C23C2/06 ,  C23C2/12

摘要： Disclosed herein is method of manufacturing an automobile part having different local strengths, more particularly, a method of manufacturing an automobile part using a steel sheet subjected to heat-treatment hardening and having different local thicknesses. The method includes preparing blank sheets using steel sheets subjected to heat-treatment hardening and having different thicknesses or different material properties according to desired strength; forming a blank assembly by joining the blank sheets to each other via laser welding; cold-pressing the blank assembly; and heating the cold-pressed part to a temperature of AC3 or more, followed by quenching the cold-formed part received within dies to remove residual stress while increasing strength of the automobile part.

摘要翻译： 这里公开了制造具有不同局部强度的汽车部件的方法，更具体地，涉及使用经受热处理硬化并且具有不同局部厚度的钢板制造汽车部件的方法。 该方法包括使用经过热处理硬化的钢板，根据所需强度制备具有不同厚度或不同材料特性的坯料; 通过激光焊接将坯料彼此接合而形成坯料组件; 冷压坯料; 并将冷压部加热至AC3以上的温度，然后在容纳在模具内的冷成型部件淬火，以消除残余应力，同时提高汽车部件的强度。

公开(公告)号：US20130095413A1

公开(公告)日：2013-04-18

申请号：US13805883

申请日：2010-06-24

申请人： Yoo-Taek Jeon ,  Eun-Young Kim ,  Man-Bean Moon

发明人： Yoo-Taek Jeon ,  Eun-Young Kim ,  Man-Bean Moon

IPC分类号： H01M8/02

CPC分类号： H01M8/0208 ,  H01M8/0202 ,  H01M8/021 ,  H01M8/0228 ,  H01M8/0232 ,  H01M8/0245 ,  Y02P70/56

摘要： The present invention relates to a separator plate for a fuel cell and to a method for producing the same, and relates to an invention wherein a surface-modification layer is formed through the use of low temperature plasma processing such that it is possible to prevent the hydrophobic characteristics which occur during gasket forming and to have outstanding hydrophilic characteristics, and such that it is possible to obtain the advantageous effect of highly outstanding corrosion resistance and electrical conductivity not only initially but also even after long-term use in a fuel-cell operating environment, and also such that it is possible to maintain outstanding durability even when using a normal low-price stainless-steel sheet base material, and it is possible to reduce the unit cost of production of the separator plate for the fuel cell since surface processing can be carried out at low cost.