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Method for welding bottom plate of large flat-bottom storage tank

A storage tank bottom plate and welding method technology, which is applied to welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of large deformation of the bottom plate, short service life, and affecting the appearance of the storage tank, so as to increase the strength and rigidity, prolong the The effect of service life and reduction of welding deformation

Inactive Publication Date: 2011-05-25
LINDE ENG HANGZHOU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention mainly provides a large-scale flat-bottom storage tank with simple processing process, which can effectively reduce the welding deformation of the bottom plate of the large-scale flat-bottom storage tank, improve the flatness of the bottom plate, thereby increasing the strength and rigidity of the storage tank and prolonging the service life of the storage tank. The tank bottom plate welding method solves the large deformation of the bottom plate in the prior art, which not only affects the appearance of the storage tank, but also reduces the strength and stiffness of the storage tank due to the failure to release and eliminate the residual stress generated during the welding process. Technical problems such as short life

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  • Method for welding bottom plate of large flat-bottom storage tank
  • Method for welding bottom plate of large flat-bottom storage tank
  • Method for welding bottom plate of large flat-bottom storage tank

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Embodiment

[0031] Such as figure 1 As shown, the welding method for the bottom plate of the large flat-bottomed storage tank of the present invention comprises the following steps:

[0032] 1) Prefabricate 14 medium-width panels 1, which are cut from 14 rectangular standard steel plates with a length of 6000mm, a width of 1500mm, and a thickness of 6mm, and the 14 steel plates are laid flat and overlapped with each other to form a circle with a diameter of 10500mm Shaped flat-bottom storage tank bottom plate, wherein the bottom plate joints 11 between the adjacent middle plates 1 are dislocated, and then the adjacent middle plates 1 are fixed by spot welding. In order to reduce the welding deformation of the middle plates 1, in the adjacent middle plates 1 A number of 20Kg iron blocks are placed across the width of the board;

[0033]2) Prefabricate 12 fan-shaped edge steel plates 21 of the same size with a thickness of 10mm, and then spread the fan-shaped edge steel plates 21 along the...

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Abstract

The invention discloses a method for welding a bottom plate of a large flat-bottom storage tank, which has the advantage of simple processing process and can effectively reduce the welding deformation of the bottom plate of the large flat-bottom storage tank, improve the evenness of the bottom plate and prolong the service life of the storage tank, solving the technical problems of large bottom plate deformation, poor storage tank strength and rigidity, service life reduction, and the like in the prior art. The method mainly comprises the following steps of: butt jointing or lap jointing a plurality of steel plates to form a bottom plate of a round flat-bottom storage tank; then paving a plurality of fan-shaped steel plates around the circumference of the bottom plate of the flat-bottom storage tank to form an annular edge plate; partially welding adjacent fan-shaped steel plates from outside to inside; then coaxially putting cylindrical wall plates; and welding according to a welding sequence of spot fixing and welding from outside to inside.

Description

technical field [0001] The invention relates to a welding method, in particular to a welding method for the bottom plate of a large flat-bottomed storage tank which can effectively reduce the welding deformation of the bottom plate of the large flat-bottomed storage tank and improve the flatness of the bottom plate. Background technique [0002] The traditional welding method between the bottom plate of a large flat-bottomed storage tank and the bottom plate and the wall plate is to prefabricate several medium-width plates and several fan-shaped edge steel plates, and then connect the medium-width plates one by one to form a circular flat-bottomed storage tank bottom plate shape. Then spread the fan-shaped edge steel plates along the outer circle of the bottom plate of the flat-bottomed storage tank, and then weld the fan-shaped edge steel plates one by one to form a ring-shaped edge plate, and then weld and connect the adjacent medium-width plates, and then weld the ring-sha...

Claims

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Application Information

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IPC IPC(8): B23K31/02
Inventor 孙朴
Owner LINDE ENG HANGZHOU
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