Wire drawing die for welding wires

Abstract

The invention discloses a wire drawing die for welding wires. The wire drawing die is equipped with an inner hole in a die core, and the inner hole is formed by connecting an access area, a compression area, a sizing area and a release area, wherein, an access angle, a compression angle and a release angle are correspondingly arranged on the access area, the compression area and the release area; a sizing diameter and a sizing length are set on a corresponding sizing area; the compression angle is 10-16 degrees; and for the corresponding sizing area, the ratio of the sizing length to the sizing diameter is 30%-45%. The welding wires produced by the wire drawing die has the advantages of high surface cleanliness and uniform plastic deformation so as to improve wire feeding property and linear stability of the welding wires and form a smooth and level welding bead; and the access angle is equal to the compression angle so as to prevent lubricating powder from reversely overflowing in case of being obstructed by the compression angle in the compression area after entering the access area, thus the lubricating powder can fully enter the access area.

Description

technical field [0001] The invention relates to a wire drawing die, in particular to a wire drawing eye die for welding wire. Background technique [0002] The eye mold is a mold for wire stretching. The wire drawn by the eye mold must have the ability of plastic deformation. The wire is penetrated from the large aperture side of the eye mold, and the wire is pulled from the small aperture side by using the plastic extension of the wire. The wire diameter of the wire rod metal wire can be gradually reduced, and at the same time, the smoothness of the wire rod surface can be improved to complete the manufacture of the stretched wire. At present, the eye molds used in the manufacturing industry have different structures, but basically they all have the two most critical parts, the compression zone and the sizing zone. The structure of the eye mold greatly affects the quality of the wire after drawing. As a special-purpose wire, welding wire has high requirements on the surfa...

AI Technical Summary

Problems solved by technology

As a special-purpose wire, welding wire has high requirements on the surface cleanliness and plastic deformation rate of the wire after wire drawing, and it is difficult to obtain satisfactory results with ordinary eye molds.

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