Manufacturing method of stainless steel tapered tank body

Abstract

The invention provides a manufacturing method of a stainless steel tapered tank body. The manufacturing method comprises the following steps: 1) one rectangular stainless steel plate is directly coiled and welded to form a cylindrical cylinder; 2) the other rectangular stainless steel plate is pressed and welded to form a top round tank; 3) an arc-shaped stainless steel plate is rolled and weldedthrough a tapered rolling device to form a tapered bottom round tank; 4) the tapered bottom round tank and the matched end face of the bottom of the cylindrical cylinder are in seamless butt joint through laser argon arc welding, and seamless butt joint is carried out on the matched end face of the top round tank and the cylindrical cylinder by adopting laser argon arc welding; and 5) mirror surface profiling polishing is carried out on the inner wall of the whole inner tank after laser argon arc welding is completed. Compared with the prior art, the manufacturing method greatly eliminates deformation stress through segmented welding, the inner wall of the tank body with a smooth mirror face, no gap, no pit and no section difference can be realized through polishing on the inner wall, andno residual dirt remains on the inner wall of the tank body, so that the rapid propagation of bacteria on the inner wall of the tank body can be effectively inhibited, and the effect of improving thefermentation or fresh-keeping and antibacterial effects can be achieved.

Description

Technical field [0001] The invention relates to the field of stainless steel welding, in particular to a method for manufacturing a stainless steel conical tank body. Background technique [0002] Such as figure 1 As shown, the existing stainless steel conical tank is formed by welding the top tank 100 and the bottom tank 200 in the middle of the tank body. Due to the low strength of the middle part of the tank body, it is prone to deformation. Therefore, a welding table must be formed in the middle of the welding. A step is formed inside the rear tank body. There are problems such as welding step difference, stress deformation, pits, cracks, etc., which affect the storage of goods. After several times of loading the goods, a large number of bacteria will grow out and give off a foul smell. After a period of time, the bacteria will accelerate the corrosion of the welded joints, which will cause the tank to rupture, accelerate the pollution, and seriously affect the health of cons...

AI Technical Summary

Problems solved by technology

[0002] like figure 1 As shown, the existing stainless steel conical tank is formed by welding the top tank 100 and the bottom tank 200 in the middle of the tank body. Because the strength of the middle part of the tank body is low, deformation is easy to occur, so the middle part of the welding needs to form a welding table, so that after welding A step is formed inside the rear tank body. There are problems such as welding step difference, stress deformation, pits, cracks, etc. at this step, which affect the storage of items. After a period of time, the bacteria will accelerate the corrosion of the weld seam at the weld, causing the tank to rupture, accelerating pollution, seriously affecting the health of consumers, and accompanied by appearance corrosion

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