Patent ID: 7445140
Filing Date: 2008-11-04
Classification: B23K

Abstract:
1. A production method of a ultrasonic weld assembly, by conducting ultrasonic welding by ultrasonically oscillating a first member and a second member each made of a metal while a pressure is applied to said first and second members, wherein: when a weld area of the weld surfaces between said first and second members is S and total energy consumed on said weld surfaces is Et during said ultrasonic welding, said ultrasonic welding is carried out to produce said ultrasonic weld assembly in such a manner that a function E(P, t) of an energy density E defined as the quotient obtained by dividing said total energy Et by said weld area S, which function E(P, t) is defined for a surface pressure P of the weld surfaces of said first and second members and a sheet thickness t of the weld portion of said first and second members, satisfies the relation where J=0.2×10