A welding method for fuel oil pipe

Abstract

The invention belongs to the technical field of automobile part processing and particularly relates to a welding method for an oil filling pipe. The welding method comprises the steps that a filling pipe body, an exhaust pipe body, a spiral sleeve and a bracket are clamped into a welding mold at a time and pressed firmly through a mechanical hand, and all the parts are subjected to spot welding and fixing through an argon arc welding machine and copper alloy welding rods, taken out from the mold and then subjected to assembly welding; after welding is completed, gas tightness detection is conducted, then comprehensive test instrument detection is conducted according to the drawing size, and deformation adjustment needs to be conducted if the oil filling pipe is unqualified; surface anti-corrosion treatment is conducted; and high-temperature curing is conducted. According to the welding method for the oil filling pipe, argon arc welding spin welding and the copper welding rods are adopted, thus, the reliability is good, aging is not prone to happening, the structure of an original corrosion-resistant layer is ensured, and the service life is long; low-temperature welding is conducted, the effect that welding and fixing are stable is achieved, and meanwhile, a galvanized layer is not destroyed; and the optimum current and the optimum rotation speed are set, so that the anti-corrosion performance of the welded oil filling pipe is high, and no sand hole occurs.

Description

technical field [0001] The invention belongs to the technical field of auto parts processing, and in particular relates to a welding method for an oil filling pipe. Background technique [0002] At present, gas welding is mostly used in the welding process of fuel pipes. The welding temperature is high and the heating area is large, which makes the surface of the galvanized layer oxidize rapidly and destroys its corrosion resistance. At the same time, the installation method of the spiral sleeve: the spiral sleeve is installed by inlaying the inner sealant. The disadvantages are poor reliability, easy aging, low service life, chemical reaction to the oil body itself, and poor sealing performance. Contents of the invention [0003] The purpose of the present invention is to provide a processing method for filling pipes, in order to achieve the above purpose: the present invention provides the following technical solutions: [0004] A welding method for a refueling pipe, wh...

AI Technical Summary

Problems solved by technology

[0002] At present, gas welding is mostly used in the welding process of fuel pipes. The welding temperature is high and the heating area is large, which makes the surface of the galvanized layer oxidize rapidly and destroys its corrosion resistance.

At the same time, the installation method of the spiral sleeve: the spiral sleeve is installed by inlaying the inner sealant. The disadvantages are poor reliability, easy aging, low service life, chemical reaction to the oil body itself, and poor sealing performance.

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