Process for assembling and spot welding of circular seams of tank body of container

Abstract

The invention relates to a process for assembling and spot welding of circular seams of a tank body of a container. The process comprises the following steps of: (1) strictly controlling to cut a panel veneer of the tank body of the container; (2) squeezing head and rounding the panel veneer, ensuring that the maximal error between the ellipticity of the panel veneer and that of an arc sample plate can never exceed specifications, and assembling and welding the arc plates of the tank body into a cylindrical tank body; (3) precisely marking 0-degree, 90-degree, 180-degree and 270-degree position graduation lines as axis points for assembling and spot welding at the circular opening edge of the tank body of the container, then dividing blanks among the four position graduation lines into equal parts, and making each equal part point a spot assembling and welding point; (4) preparing the following tools and personnel prior to the spot welding assembly; (5) marking 0-degree, 90-degree, 180-degree and 270-degree axis points around the tank body, marking position graduation lines, orderly assembling the axis points, and performing assembling and spot welding on each set equal part point. The process can assemble and spot weld the tank body of the container which contains chemical toxic substances with a higher pressure and easily causes arc crater damage to the spot welding on the surface of the tank body parent metal, and achieves an obvious effect.

Description

technical field [0001] The invention relates to a non-destructive assembly process for a container body, in particular to a spot welding process for the assembly and spot welding of the circular seam of the container body. Background technique [0002] At present, to make a container tank body, firstly, the cut sheet material must be rolled into an annular cylinder body, and then the butt longitudinal welds are welded together to form a single tank body nipple. The ellipticity of the arc of each sub-joint is allowed to have a certain error according to the specification, so that when the upper and lower tanks are assembled and spot-welded, there will be a local gap phenomenon (see Figure 1-1 to Figure 1-3 , Part A cut open large schematic diagram); therefore, the operator needs to use a process to adjust the arc edge of the staggered edge to be straight and consistent from top to bottom. In the traditional process, a knife-shaped code plate is mostly welded on the concave s...

AI Technical Summary

Problems solved by technology

In the traditional process, a knife-shaped code plate is mostly welded on the concave side, and then a wedge is used on the convex side to support the gap formed between the convex and the concave (see Figure 2-1 to Figure 2-3 After the spot welding is firm, cut off the code plate and grind it flat; in this way, the base material of the original concave welding knife type code plate will be damaged, which is special for the application of the container to store chemicals or to withstand high pressure. For the required tank body, the welding scars need to be repaired and polished, and some inspections such as MT (magnetic powder) and PT (coloring) are required; this will not only increase production costs and consume man-hours, but also affect the internal and external quality of the product. Appearance Quality

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