Patent ID: 7592566

Claim:
A method for mutually welding a plate comprising at least one layer based on Ag alloys and a copper layer, and a copper body, comprising the use of a laser means for performing said welding, said method comprising: superimposing and coupling the copper layer of said plate on a surface of said copper body; starting welding by focusing said laser means on a point located proximate to a joint between one face of said plate and said surface of said copper body; maintaining an angle of incidence of said laser means at values that are within a range from 5° to 20° with respect to the perpendicular to said surface of said copper body; moving the laser means with respect to the joint so as to form an elongated weld, a component of the angle of incidence of said laser means being kept oriented along the same direction as the relative motion between said laser and said welded joint, said laser means being pointed towards a direction that is opposite with respect to the portion of said joint that has already been welded, thereby forming an elongated weld having a weld pool that is pushed along said joint to be welded; and maintaining a quantity of molten material of said weld, which lies on a side that belongs to said copper body with respect to said joint, within a range that is equal to or greater than 70%.