Longitudinal-weld-joint welding process for tank bodies of oil tanks
A tank body and oil tank technology, which is applied in the field of longitudinal seam tailor welding of oil tank bodies, can solve the problems of welding quality influence, uneven sides of the longitudinal seam, and unequal appearance, so as to ensure quality, improve sealing, and The effect of improving the first pass rate
Inactive Publication Date: 2011-11-23
QINGDAO JINHUANGHAI CONTAINER
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Problems solved by technology
Since it is tailor-welded by multiple plates, the two sides of the longitudinal seam are uneven, and lap joints are used, but the appearance is uneven and not beautiful. Butt welds are used. Even if automatic welding can be used after manual grinding, the welding quality is also affected. influences
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[0021] The present invention will be explained with reference to the drawings.
[0022] figure 1 Shows a horizontally placed oil tank from figure 2 Look, the cross section of the oil tank is a square ellipse composed of straight lines and transitional arcs. The oil tank consists of a tank base 3, a pipe fitting 4, an operation box 5, a manhole 6, an outer head 1, an outer tank body 2 and Figure 4 As shown, the inner tank 18 and the inner head 22 are composed. The inner tank body 18 and the inner head 22 are wrapped in the outer tank body 2 and the outer head 1 to form a double-walled oil tank body. The inner can body 18 covers the outer surface of the inner head 22, and the outer head 1 and the outer can body 2, and the inner head 22 and the inner can body 18 are overlapped. Both the inner head 22 and the inner tank 18 are provided with discontinuous long grooves 21. After the inner and outer tank bodies are bonded together, the outer tank body 2 and the inner tank body 18 ...
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Abstract
The invention discloses a longitudinal-weld-joint welding process for the tank bodies of oil tanks, which an improved on an oil tank manufacturing process. The cross sections of the tank bodies of the oil tanks are in a square oval shape formed by straight lines and transitional arcs. The manufacturing process comprises three steps, namely a plate prefabrication step, an early welding step and a final welding step, and is characterized in that: the plates formed by the plate fabrication step are strips with the same length as the tank bodies; and the weld join formed by the early welding and the weld joint formed by the final welding are vertical straight weld joints. The longitudinal-weld-joint welding process for the tank bodies of the oil tanks has the advantages of: firstly, due to the high-quality automatic welding, the airtightness of the weld joints is improved, the strength of the longitudinal weld joint is high enough, and the rate of first acceptance check in oil tank airtightness test is improved; some strip plates do not need forming, the forming manufacturing workload is small, and the manufacturing difficulty is small; and finally, during longitudinal-weld-joint welding, the tank bodies of the inner and outer tanks can be combined easily, and the two semi-outer tank components formed by longitudinal-weld-joint welding can be fastened easily. The process is suitable to be widely used for manufacturing tank bodies.
Description
Technical field [0001] The invention relates to an improvement of an oil tank manufacturing process, in particular to a tailor welding process for the longitudinal seam of an oil tank body. Background technique [0002] The square oval oil tank is a horizontally placed oil tank. The cross-sectional shape of the tank is not a regular circle, oval or rectangle, but a closed geometric shape composed of straight lines or arcs with large curvature and excessive circular arcs. The oil tank with this cross-section has a large volume and is a widely used oil storage and transportation container today. [0003] Except for the seals at both ends, the components that play the role of containment in the oil tank are the tank body. Because most of the oil tanks are double-walled, there are inner and outer tanks. The inner and outer tanks have the same or similar wall thickness and are close to each other but with gaps. The cross sections of the inner and outer tanks are both The cross-section...
Claims
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IPC IPC(8): B23K31/02B23K37/00
Inventor 金继华
Owner QINGDAO JINHUANGHAI CONTAINER