Method for welding tank shell rings

Abstract

The invention provides a method for welding tank shell rings. The method comprises that: step a, a third shell ring is in butt joint with one end of a shell ring welding assembly, wherein the shell ring welding assembly comprises a first shell ring and a second shell ring which are coaxial with each other, the butt joint parts of the first shell ring and the second shell ring are only subjected to inner ring gap tack welding, and the third shell ring is in butt joint with one end of the second shell ring; step b, an outer ring gap of the butt joint parts of the first shell ring and the second shell ring is welded, and the inner ring gap of the butt joint parts of the second shell ring and the third shell ring is welded; and step c, the welding assembly which is obtained in the step b is used as a shell ring welding assembly for the step a, and the steps a and b are repeated until N third shell rings are welded. The method is adopted to weld the inner ring gap and the outer ring gap of different positions of a same working state at the same time, so that the working efficiency is increased, and the adopted equipment number and working area are reduced; and in addition, the working station does not need to be transferred, so that processes are simplified, and the working personnel number is decreased.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a welding method for tank body joints. Background technique [0002] At present, the tank body of tank trucks mostly adopts the barrel-joint manufacturing process, which means that multiple barrel joints are connected into a barrel by welding. The girth welding process between two adjacent cylinder sections adopts the double-sided welding process. Moreover, the welding method is to weld the inner ring gap first, and then change to another station to weld the outer ring gap. [0003] specifically, figure 1 It is a working state diagram of only welding the inner ring gap in the prior art, such as figure 1 As shown, connect the two cylindrical sections 4 coaxially and place them on the roller frame 2, rotate the above two cylindrical sections 4, and use a submerged arc welding trolley or a special inner ring welding machine (hand arc welding is also acceptable) 3 to complete the...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a welding method for tank body joints to solve the problems of many required workers, low work efficiency, many processes and occupied equipment and occupied work in the prior art when the tank body is manufactured by adopting the cylindrical joint manufacturing process. big problem

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