US 2024/0189949 A1 · WELDING ELECTRODE AND SPOT-WELDING DEVICE

Abstract

The present invention provides a welding electrode capable of spot-welding a workpiece having a surface oxide film with stable welding quality, the welding electrode allowing general tip dressers to be used. The welding electrode of the present invention is used for spot welding of a workpiece. The welding electrode includes an end face provided so as to contact the workpiece, and at least one elongated groove provided in the end face or a plurality of blind holes provided in the end face. A depth of the groove or a depth of the blind holes is 0.5 mm or more and 20 mm or less. A ratio (d/w) of the depth d of the groove to a width w of the groove or a ratio (d/s) of the depth d of the blind holes to a size s of the blind holes is 2 or more.

Claims7

Dependent claims

A welding electrode used for spot welding of a workpiece, wherein

the welding electrode comprises an end face provided so as to contact the workpiece, and at least one elongated groove provided in the end face or a plurality of blind holes provided in the end face,
a depth of the groove or a depth of the blind holes is 0.5 mm or more and 20 mm or less,
the width of the groove or the size of the blind holes is 0.01 mm or more and 0.5 mm or less,
a ratio (d/w) of the depth d of the groove to a width w of the groove or a ratio (d/s) of the depth d of the blind holes to a size s of the blind holes is 2 or more,
the width of the groove is substantially constant in the depth direction, and
the size of the blind holes is substantially constant in the depth direction.

3 more elements

Dependencies are inferred from the claim text.

Welding electrode and spot-welding device

Life of this patent

Welding electrode and spot-welding device

Life of this patent

Abstract

Claims7