Title:
ULTRASONIC WELDING METHOD FOR DIFFERENT KINDS OF METAL
Document Type and Number:
Japanese Patent JP3456293
Kind Code:
B2
Abstract:
PURPOSE: To join a high hardness material and a low hardness material with a sufficient strength.
CONSTITUTION: A plurality of different kinds of metal to be welded, namely joining members 6 are arranged between an ultrasonic tool 4 and a working table 5. The joining members 6 consist of a high-hardness material (high hardness steel) with a low-hardness covering layer (copper covering layer) 6a' susceptible to a plastic flow formed on the surface, low-hardness material (aluminum material) 6b placed on the working table 5, and other low-hardness material (copper material, for example) 6c arranged between the high-hardness material 6a and the ultrasonic tool 4. In this case, the thickness of the low-hardness covering layer 6a' is set at approximately 5-10μm. In addition, the thickness of other low-hardness material 6c is set at least at the depth of a slip-preventing knurling tool, 4a or more, with its hardness set at a hardness (Hv50-110) equivalent to pure copper susceptible to a plastic flow and hard to be transferred.
Inventors:
Akihiko Ogino
Tamaki Suzuki
Tamaki Suzuki
Application Number:
JP5935995A
Publication Date:
October 14, 2003
Filing Date:
March 17, 1995
Export Citation:
Assignee:
株式会社デンソー
International Classes:
B23K20/10; H01L21/607; B23K103/20; (IPC1-7): B23K20/10
Domestic Patent References:
| JP6331751A | ||||
| JP5314642A | ||||
| JP360881A | ||||
| JP50144651A | ||||
| JP536095B1 |
Attorney, Agent or Firm:
Kentaro Iida