Method for treating a surface such as a metal surface and producing products embodying such including lithoplate

A method of treating an object having a substantial surface to which a substantially stable electric arc can be applied comprising continuously moving an electric arc on said surface by magnetic impulsion around a loop periphery path established by a loop electrode, the loop of which is in arc passing relationship with said surface and effecting relative movement between one or more such electric arcs and said surface in such a manner as to contact a major portion of said surface and increase its surface area.

A method of increasing the surface area of a metallic surface using an electric arc, said method comprising:

• (a) moving metal having a width and length in a first direction which is generally parallel to said length;
• and
• (b) continuously moving an electric arc on said surface by magnetic impulsion around an oval or elliptical loop periphery path established by an oval or elliptical loop electrode, the loop of which is in arc passing relationship with said surface, the loop extending across a substantial portion of the width of said metal, and effecting relative movement between one or more such electric arcs and said surface in such a manner as to contact a major portion of said surface.

A method of increasing the surface area of a metal surface comprising:

• (a) moving a band of metal having said surface, said surface having a width and a length, in a direction parallel to its length;
• and
• (b) continuously moving an electric arc on said surface by magnetic impulsion around a loop periphery path established by a loop electrode, the loop of which is in arc passing relationship with said surface so as to contact an extensive area of said surface.

A method of increasing the surface area of a metal surface comprising:

• (a) moving a band of said metal having said surface, said surface having a width and a length, in a direction parallel to its length;
• and
• (b) conducting a plurality of electric arcs to said moving surface at least a plurality of such arcs being continuously moved on said surface by electromagnetic impulsion around loop periphery paths established by a plurality of loop electrodes, the loops of which are in arc passing relationship with said surface so as to contact an extensive area of said surface.

A method of increasing the surface area of a metal band surface comprising:

• (a) moving a band of said metal having a width and a length in a direction parallel to its length;
• and
• (b) conducting a plurality of electric arcs to said moving metal band surface, a plurality of such arcs being continuously moved on said surface by electromagnetic impulsion around a plurality of oval or elliptical loop periphery paths established by oval or elliptical loop electrodes, the loops of which are in arc passing relationship with said surface, the loops extending across a substantial portion of the width of said metal so as to cause said arcs to contact an extensive area of said metal.

The method of increasing the surface area of a metal sheet or foil product comprising conducting one or more electric arcs to a major surface of said sheet or foil and effecting relative movement between said arc and said surface including continuously moving an electric arc on said surface by electromagnetic impulsion around a loop periphery path established by a loop electrode, the loop of which is in arc passing relationship with said surface in such a manner as to contact an extensive area of said surface.

A method of treating an object comprising conducting one or more electric arcs to a surface of said object including continuously moving an electric arc on said surface by magnetic impulsion around a loop periphery path established by a loop electrode, the loop of which is in arc passing relationship with said surface and effecting relative movement between one or more such electric arcs and said surface in such a manner as to contact a major portion of said surface and increase its surface area, and bringing a treatment agent into the arc site during arc contact with said surface to alter said surface.

A method of treating a metallic surface of an object comprising continuously moving an electric arc on said surface by magnetic impulsion around a loop periphery path established by a loop electrode, the loop of which is in arc passing relationship with said surface and effecting relative movement between one or more such electric arcs and said surface in such a manner as to contact an extensive portion of said surface and increase its surface area.

The method according to claim 107 wherein said bonding is roll bonding.