公开(公告)号：EP0985450A4

公开(公告)日：2000-05-31

申请号：EP97935795

申请日：1997-08-15

申请人： NIPPON STEEL CORP

发明人： OOTANI TADAYUKI ,  IMAI ATUHIKO ,  KASUYA MASAYUKI ,  IWAMI KAZUTOSHI ,  UTUMI TOORU ,  YAMANAKA MIKIO ,  OHTA HITOSHI ,  TOKUNAGA YOSHIKUNI ,  SHIMIZU FUJIO ,  EGAMI TOSHIHIRO ,  NODA TAMIO

IPC分类号： B01J35/04 ,  B21D47/00 ,  B23K1/00 ,  B23K1/20 ,  B23K20/02 ,  F01N3/28 ,  B23K20/14 ,  B23K20/18 ,  B23K101/20 ,  B32B3/12

CPC分类号： B23K1/0014 ,  B01J35/04 ,  B21D47/00 ,  B23K1/20 ,  B23K20/023 ,  B23K2201/02 ,  F01N3/281 ,  F01N2330/32 ,  F01N2330/322 ,  F01N2350/02 ,  Y10T29/49345 ,  Y10T428/1234

摘要： Improvement in the engine durability and in the solid phase diffusion connectability of the contact part of a metal flat foil and a metal corrugated film from which a catalyst converter metal honey comb applied to the exhaust gas cleaning is made, characterized in that at least one of the foils has a thickness less than 40 νm and an A1 content after connection is not less than 3 %, and that the surface states in the width directions of both the metal films are formed in a required surface roughnesses or surface patterns, and that the width of the connection part of both the metal foils is not less than 5 times of the thickness of the metal foil. For effective practice of the above improvement, both the surface roughness and the regulation of thickness or either of them have to be selected. In order to improve the engine durability further, a non-connection part is provided in the honey comb element as described above and/or a shell is provided around the outside circumference of the honey comb element.