METHOD OF BONDING ALUMINUM MEMBER TO METALLIC MEMBER AND BONDING METHOD

Japanese Patent JP2014231091

A

PROBLEM TO BE SOLVED: To provide a bonding method capable of improving a bonding strength of bonding an aluminum member to a metallic member.SOLUTION: In S102, while an aluminum wire is urged so as to pressure-contact the aluminum wire with a copper wire by a spring, a current is applied so that temperatures of an end portion of the aluminum wire in contact with the copper wire and an end portion of the copper wire in contact with the aluminum wire are equal to or higher than an eutectic point temperature and lower than a melting temperature. After passage of certain time since the end portion of the aluminum wire starts softening, the aluminum wire and the copper wire are pressure-contacted by a compressed air pressurizing portion and the spring while applying a current to the aluminum wire and the copper wire in S103, a displaceable length between one end portion supporting one end of the spring and the other end portion of the compressed air pressurizing portion being longer than that of the spring. As a result, oxide films and molten parts formed on the end portions of the aluminum wire and those of the copper wire are removed, and a uniform and thin diffused layer is formed between the end portion of the aluminum wire and that of the copper wire. Therefore, strength of a portion in which the aluminum wire is bonded to the copper wire can be intensified.

ITO YOSHIFUMI
INOMATA NORIYASU
KAYUKAWA KIMIJI
SHIRAI HIDEAKI

JP2013114222A

December 11, 2014

May 30, 2013

Click for automatic bibliography generation  

DENSO CORP

B23K20/00

JP2012006068A	2012-01-12
JPS50134944A	1975-10-25
JP2001030081A	2001-02-06
JP2007175740A	2007-07-12

US20140299582A1	2014-10-09
US20140299582A1	2014-10-09

Masaki Hattori

Previous Patent: WELDING TORCH AND WELDING DEVICE PROVIDED WITH THE SAME

Next Patent: METHOD FOR MANAGING NOZZLE SHAPE REFRACTORY BODY