A kind of welding tool for stainless steel expanding cone and its welding method

Abstract

The invention discloses a welding tool and a welding method of a stainless steel expansion drill, and belongs to the field of manufacturing of combustors. The welding tool comprises at least one pair of cylinder portion driving idler wheels, at least one expansion drill portion supporting idler wheel is arranged in front of rotation shafts of the cylinder portion driving idler wheels, and at least one cylinder portion positioning idler wheel is arranged at the back of the rotation shafts of the cylinder portion driving idler wheels. The welding method includes the following steps in sequence: cylinders are respectively arranged on each cylinder portion driving idler wheel, the rear portions of the cylinders abut against the cylinder portion positioning idler wheel, the cylinders rotate along with the cylinder portion positioning idler wheel, meanwhile, the expansion drill portion supporting idler wheel supports an expansion drill and prevents the expansion drill from moving forwards, and the expansion drill portion supporting idler wheel rotates along with the expansion drill. The cylinder portion driving idler wheels are started to drive the cylinders and the expansion drill to roll, and along with the rolling of the cylinders and the expansion drill, rolling welding is carried out at the combination position of the cylinders and the expansion drill. The welding tool and the welding method of the stainless steel expansion drill can lower the work difficulty for a welder, increases the welding stability and the controllability of welding quality, reduces the repair rate of expansion drill welding, and improves the work efficiency of expansion drill welding.

Description

technical field [0001] The invention belongs to the field of burner manufacture. Background technique [0002] In the swirling burner, the device that turns the swirling wind into a diffuse state is called an expanding cone. The expansion cone is divided into primary air expansion cone and secondary air expansion cone, which makes the rotating air flow passing through them diffuse into the furnace at a certain angle, and plays the role of evenly distributing coal powder. The presence or absence of the expansion cone is related to the uniform heating of the entire boiler furnace, which affects the productivity of the boiler. At present, in the power plant feedback information of burner products, the situation that the expansion cone falls off accounts for a large proportion. Therefore, the welding quality between the expansion cone and the cylinder is extremely important, and its welding performance directly affects the swirl burner. service life. [0003] The current meth...

AI Technical Summary

Problems solved by technology

The welding position is between 200 and 350mm from the surface of the platform, and the welding position is low. During the welding process, the welder changes the welding position around the product many times, coupled with manual control of the welding equipment, the welding quality depends entirely on human control. There are high requirements for operating qualifications and skills, but even in this case, the welding quality of the expansion cone cannot be effectively guaranteed, and the phenomena of undercut, poor fusion, and poor lap joints remain high.

According to statistics, more than 80% of the cone expansion components in the workshop need to go through rework procedures such as repair welding and grinding, which takes up more production resources and limits the production efficiency of cone expansion welding.

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