A kind of non-copper-plated solid wire for gas shielded welding and preparation method thereof

Abstract

The invention discloses a non-copper-plated solid welding wire for gas shielded welding. The non-copper-plated solid welding wire for gas shielded welding comprises a welding wire base body and a surface treatment layer, wherein the welding wire base body is formed by drawing of a wire rod, the surface treatment layer comprises a potassium base solid wire drawing lubricant agent left during drawing of the welding wire and high-voltage static coating oil, the amount of the remaining potassium base solid wire drawing lubricant agent is 5-10mg / m<2>, and the amount of the high-voltage static coating oil is 5-15mg / m<2>. The manufacturing method of the non-copper-plated solid welding wire for gas shielded welding comprises the steps that (1) husking, derusting, cleaning, lime coating and drying are carried out on the wire rod in sequence, (2) wire drawing reducing is carried out on the wire rod by means of a rough drawing reducing method and a finish drawing reducing method so that size requirements of a finished welding wire are met, (3) the lubricant agent on the surface of the welding wire is removed, (4) high-voltage static oil coating is carried out on the welding wire, (5) the welding wire is wound precisely and is packaged. The non-copper-plated solid welding wire has the advantages that surface treatment is even, wire feeding is stable, the electrical conductivity and rust resistance are high, and the success rate of arcing and the success rate of reignition of arc are high. The manufacturing method of the non-copper-plated solid welding wire for gas shielded welding has the advantages that discharging of waste acid, waste alkali, copper plating liquid waste and boron waste is avoided, water consumption is small, and environmental pollution is greatly reduced.

Description

technical field [0001] The invention relates to a non-copper-plated solid core welding wire for gas shielded welding and a preparation method thereof, belonging to the technical field of welding wire. Background technique [0002] Currently, CO 2 Gas shielded welding wire has developed into one of the largest single types of welding consumables, reaching 1.5 million tons in 2012. Traditional CO 2 Gas shielded welding wire is produced by electroless copper plating or electroplating copper. During the manufacturing process, the treatment of waste acid, waste alkali, copper plating waste liquid, boron-containing waste, etc. and water consumption are too large, and the pressure on environmental protection and cost is great. While traditional copper plating CO 2 There are also many defects in the welding process performance of gas shielded wire, such as unstable arc, excessive spatter, poor wire feeding, high re-strike failure rate during automatic welding, and poor weld shape...

AI Technical Summary

Problems solved by technology

Traditional CO 2 Gas shielded welding wire is produced by electroless copper plating or electroplating copper. During the manufacturing process, the treatment of waste acid, waste alkali, copper plating waste liquid, boron-containing waste, etc. and water consumption are too large, and the pressure on environmental protection and cost is great.

While traditional copper plating CO 2 There are also many defects in the welding process performance of gas shielded welding wire, such as unstable arc, excessive spatter, poor wire feeding, high re-strike failure rate during automatic welding, poor weld shape, etc.

Images