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Plane welding flange divided edge structure

A technology of plane welding and deforming structure, which is applied to the edge of the workpiece, metal processing equipment, manufacturing tools, etc., can solve the problems of insufficient weld penetration, poor spot welding firmness, and poor welding quality, and achieve good welding quality. The effect of firm spot welding and reduced amount of filler metal

Inactive Publication Date: 2008-09-10
ZHEJIANG SHENGDA STEEL TOWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the deficiencies of the existing flat flange welding structure, such as poor spot welding firmness, impenetrable weld seam penetration, and poor welding quality, the present invention provides a plane welding machine with firm spot welding, full penetration of the weld seam, and good welding quality. Flange groove structure

Method used

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Examples

Experimental program
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Effect test

example 1

[0029] Example 1: The wall thickness of the steel pipe is 8cm, the thickness of the flange is 20cm, the distance between the end face of the inner ring of the flange and the side of the steel pipe is 2 to 3cm, and the angle between the circumferential groove and the steel pipe (vertical plane) is 45 degrees. The groove height of the circular groove is 6cm, the width of the circular groove is 5cm, the radius R of the inner chamfer of the circular groove is 3cm, the width of the blunt edge between the circular groove and the circular groove is 2cm, and the upper part of the weld The weld height relative to the upper surface of the flange is 2-3cm, the weld width of the upper part of the weld relative to the side of the steel pipe is 10-11cm, and the weld angle height of the lower part of the weld relative to the bottom surface of the steel pipe is 8cm.

example 2

[0030] Example 2: The wall thickness of the steel pipe is 10cm, the thickness of the flange is 22cm, the distance between the end face of the inner ring of the flange and the side of the steel pipe is 2-3cm, and the angle between the circumferential groove and the steel pipe (vertical plane) is 55 degrees. The angle between the steep slope and the steel pipe (vertical plane) is 22.5 degrees, the groove height of the circumferential groove is 6cm, the height of the steep slope is 2cm, the width of the annular groove is 5cm, and the radius R of the inner chamfer of the annular groove is 3cm , the width of the blunt edge between the annular notch and the circumferential groove is 2cm, the weld height of the upper part of the weld relative to the upper surface of the flange is 3-4cm, and the weld width of the upper part of the weld relative to the side of the steel pipe 13-14cm, the height of the weld angle of the lower half of the weld relative to the bottom surface of the steel p...

example 3

[0031] Example 3: The wall thickness of the steel pipe is 12cm, the thickness of the flange is 30cm, the distance between the end face of the inner ring of the flange and the side of the steel pipe is 2 to 3cm, and the angle between the circumferential groove and the steel pipe (vertical plane) is 55 degrees. The angle between the steep slope and the steel pipe (vertical plane) is 22.5 degrees, the groove height of the circumferential groove is 6cm, the height of the steep slope is 4cm, the width of the annular groove is 5cm, and the radius R of the inner chamfer of the annular groove is 3cm , the width of the blunt edge between the annular groove and the circumferential groove is 2cm, the weld height of the upper part of the weld relative to the upper surface of the flange is 3-4cm, and the weld width of the upper part of the weld relative to the side of the steel pipe is 14cm ~15cm, the height of the weld angle of the lower half of the weld relative to the bottom surface of t...

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Abstract

The invention relates to a plane welding flange groove structure, the inner edge surface of a flange is lap-jointed with the outer wall of the end part of a steel pipe, the flange is divided into a lap joint section and an exposed section along the thickness direction, the flange is provided with a circumferential groove along the lap joint section, an annular slot is arranged on the exposed section, and an interval exists between the annular slot and the bottom part of the circumferential groove. The invention provides the plane welding flange groove structure with the firm point welding, full-penetration weld and good welding quality.

Description

technical field [0001] The invention relates to plane flange welding technology, in particular to a plane welding flange structure. Background technique [0002] Flexible welded flanges are widely used in connection structures such as pressure pipelines, long-distance pipelines, process pipelines, and steel pipe box steel beams in steel structure engineering. They are connected to steel pipes and other structures by welding, and the quality of welded flange welds is the key. Poor weld quality will lead to tearing of the connection between the flange and the steel pipe, resulting in air, water, and oil leakage, which in turn will cause the connection to break, causing early structural damage and other quality accidents, thus failing to meet the design and specification requirements. [0003] At present, the methods commonly used in domestic and foreign manufacturing industries to ensure the strength of welds are: [0004] (1), refer to figure 1 , simply increase the height ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K33/00
Inventor 戴刚平王淑红张国勋张再新包镇回
Owner ZHEJIANG SHENGDA STEEL TOWER
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