Novel resistance seam welding process and device for galvanized sheet fuel tanks

Abstract

A novel resistance seam welding process for galvanized sheet fuel tanks is characterized by including the steps of allowing an anode copper wire roller (1) to convey an anode copper wire (4) to an anode conducting welding roller (2), and allowing the anode conducting welding roller (2) to transfer current of a transformer as welding current to firmly weld two galvanized sheets (5) through the anode copper wire (4). A novel resistance seam welding device is characterized by comprising the anode copper wire roller (1), the anode conducting welding roller (2), an anode power tension roller (3), the anode copper wire (4), a cathode copper wire roller (10), a cathode conducting welding roller (20), a cathode power tension roller (30) and a cathode copper wire (40). The novel resistance seam welding process has the advantages that no manually removing the galvanized layer at the welded part by a grinding machine or welding the seam by a seam welding machine is needed; the step of zincing the seam is omitted; accordingly, processing steps are decreased greatly, manpower sources are saved, and rust resistance of the galvanized sheets are kept intact.

Description

technical field [0001] The invention relates to the field of the engine galvanized oil tank industry, in particular to a novel resistance seam welding process and a seam welding device for the galvanized oil tank. Background technique [0002] At present, the domestic seam welding process for engine galvanized sheet fuel tanks is as follows: [0003] 1. A kind of technique is: at first the galvanized layer of welded part is manually removed with grinder, and welds seam with seam welder again. After welding, the weld seam should be brushed with zinc. This increases the processing procedures, wastes human resources and destroys the antirust ability of the original galvanized sheet. [0004] 2. Another process is: direct roll welding, trimming and removing the galvanized parts on the surface of the welding wheel while welding the weld seam, which will cause a particularly fast loss of the welding wheel and greatly increase the welding cost. The material of the welding wheel i...

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Problems solved by technology

This not only increases the processing procedure, but also wastes human resources and destroys the antirust ability of the original galvanized sheet.

[0004] 2. Another process is: direct roll welding, while welding the weld seam, trim and remove the galvanized parts on the surface of the welding wheel, which will cause the wear of the welding wheel to be extremely fast, and greatly increase the welding cost. The material of the welding wheel is Alloy copper, the price is as high as several hundred yuan per kilogram

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