Welding method for tank wallboards of soil-covered tanks
A welding method and wallboard technology, which is applied in welding equipment, arc welding equipment, workpiece edge parts, etc., can solve the problems of high welding cost, affecting construction efficiency, and difficult construction, so as to reduce welding construction cost and improve comprehensive welding Ergonomics, the effect of reducing the amount of weld filling
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Embodiment 1
[0037] The welding method of the soil-covered tank wall plate of the present embodiment comprises the following steps:
[0038] (1) Double V-shaped compound groove
[0039] The tank wall plate is made of Q245R steel plate, and the thickness of the steel plate is 20cm.
[0040] Use mechanical cold cutting to process double V-shaped compound grooves on the tank wall to ensure processing accuracy. After processing, grind the groove and the surface layer that affects the welding quality such as rust and burrs on the inner and outer surfaces of the steel pipe within 50mm from the groove.
[0041] The schematic diagram of the double V-shaped compound groove is as follows: figure 1 as shown, figure 1 The groove angle α of the middle and lower grooves is 45°, the groove surface angle β of the upper groove is 5°, the blunt edge P is 1mm, and the distance H between the groove inflection point and the bottom edge of the tank wall is 5mm.
[0042] (2) Assembly of double V-shaped compo...
Embodiment 2
[0054] The welding method of the soil-covered tank wall plate of the present embodiment comprises the following steps:
[0055] (1) Double V-shaped compound groove
[0056] Tank siding is the same as in Example 1.
[0057] Use mechanical cold cutting to process double V-shaped compound grooves on the tank wall to ensure processing accuracy. After processing, grind the groove and the surface layer that affects the welding quality such as rust and burrs on the inner and outer surfaces of the steel pipe within 50mm from the groove.
[0058] In the double V-shaped compound groove, the groove angle α of the lower groove is 42.5°, the groove surface angle β of the upper groove is 3.5°, the blunt edge P is 0.5mm, and the distance between the inflection point of the groove and the bottom edge of the tank wall H is 4mm.
[0059] (2) Assembly of double V-shaped compound groove
[0060] The tank wall plate is assembled by flip-chip method, the gap at the root of the groove is 2mm, an...
Embodiment 3
[0071] The welding method of the soil-covered tank wall plate of the present embodiment comprises the following steps:
[0072] (1) Double V-shaped compound groove
[0073] Tank siding is the same as in Example 1.
[0074] Use mechanical cold cutting to process double V-shaped compound grooves on the tank wall to ensure processing accuracy. After processing, grind the groove and the surface layer that affects the welding quality such as rust and burrs on the inner and outer surfaces of the steel pipe within 50mm from the groove.
[0075] In the double V-shaped compound groove, the groove angle α of the lower groove is 47.5°, the groove surface angle β of the upper groove is 6.5°, the blunt edge P is 1.5mm, and the distance between the inflection point of the groove and the bottom edge of the tank wall H is 6mm.
[0076] (2) Assembly of double V-shaped compound groove
[0077] The tank wall plate is assembled by the inversion method, the gap at the root of the groove is 2.5...
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