CN113477754A - Roundness correction method for large-diameter thin-wall steel pipe - Google Patents
Roundness correction method for large-diameter thin-wall steel pipe Download PDFInfo
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- CN113477754A CN113477754A CN202110667003.0A CN202110667003A CN113477754A CN 113477754 A CN113477754 A CN 113477754A CN 202110667003 A CN202110667003 A CN 202110667003A CN 113477754 A CN113477754 A CN 113477754A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 97
- 239000010959 steel Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/14—Recontouring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A roundness correction method for a large-diameter thin-wall steel pipe is characterized by comprising the following steps: a. providing a plurality of equal-edge steel angles and a plurality of triangular wedge-shaped steel blocks matched with the equal-edge steel angles in shape, b, fixing the equal-edge steel angles (2) on the outer wall of the circumferential connector of the 1 st pipeline needing roundness correction in a spot welding manner, and c, adjusting the number of the equal-edge steel angles on the outer wall of the circumferential connector of the 1 st pipeline (3) according to the size and the deformation degree of the large-diameter thin-wall steel pipe; d. wedging the triangular wedge-shaped steel block (1) into the equilateral angle steel (2) from the interface of the No. 2 pipeline (4) along the circumferential outer wall of the No. 2 pipeline, and e, completing the roundness correction of the steel pipe. The roundness correction method for the large-diameter thin-wall steel pipe has the advantages of simple structure of the equilateral angle steel and triangular wedge-shaped steel blocks, convenience in manufacturing, simplicity and convenience in operation of roundness correction of the large-diameter thin-wall steel pipe, strong practicability, good effect, convenience in obtaining materials on site and reduction in engineering cost, and the main material of a correction tool is the angle steel.
Description
Technical Field
The invention relates to a method for correcting the roundness of a steel pipe, in particular to a method for correcting the roundness of a large-diameter thin-wall steel pipe.
Background
The large-diameter thin-wall steel pipe is easy to deform in the transportation and storage processes, the roundness deviation is large, the misalignment amount is large when the pipeline assembly is carried out once the roundness deviation exceeds the standard, the misalignment amount is far larger than the wall thickness of the pipeline when the condition is serious, and the assembly welding cannot be carried out. The traditional steel pipe roundness correction adopts professional equipment such as a plate bending machine and the like, needs a professional operation field and is difficult to use in a construction field.
Therefore, the known steel pipe roundness correction method has various inconveniences and problems as described above.
Disclosure of Invention
The invention aims to provide a safe and reliable roundness correction method for a large-diameter thin-wall steel pipe.
In order to achieve the purpose, the technical solution of the invention is as follows:
a roundness correction method for a large-diameter thin-wall steel pipe is characterized by comprising the following steps:
a. providing a plurality of equal-edge angle steels and a plurality of triangular wedge-shaped steel blocks matched with the equal-edge angle steels in shape;
b. fixing equal angle steel on the outer wall of the circumferential connector of the 1 st pipeline needing roundness correction in a spot welding manner;
c. adjusting the number of the equilateral angle steels on the outer wall of the circumferential connector of the 1 st pipeline according to the size and the deformation degree of the large-diameter thin-wall steel pipe;
d. wedging a triangular wedge-shaped steel block into an equilateral angle steel from the interface of the No. 2 pipeline along the circumferential outer wall of the No. 2 pipeline until the outer walls of the No. 1 pipeline and the No. 2 pipeline are flush, and completing the roundness correction and dismantling of the steel pipe;
e. and finishing the roundness correction of the steel pipe, and spot-welding the equal angle steel and the triangular wedge-shaped steel block after the 1 st pipeline and the 2 nd pipeline are fixed.
The roundness correction method of the large-diameter thin-wall steel pipe can be further realized by adopting the following technical measures.
In the method, the angle steel with equal edge is the same as the triangular wedge-shaped steel block in material.
After the technical scheme is adopted, the roundness correction method for the large-diameter thin-wall steel pipe has the following advantages:
1. the equilateral angle steel and triangular wedge-shaped steel blocks are simple in structure and convenient to manufacture;
2. the roundness correction of the large-diameter thin-wall steel pipe is simple and convenient to operate, strong in practicability and good in effect;
3. the main material of the correcting tool is angle steel, so that the field material is convenient to obtain, and the engineering cost is reduced.
Drawings
FIG. 1 is a schematic view of a connection structure of equal-angle steel and a large-diameter thin-walled steel pipe according to an embodiment of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic diagram illustrating the correction of an equal angle steel and a triangular wedge-shaped steel block according to an embodiment of the invention;
fig. 4 is a schematic diagram illustrating the completion of the correction of the equal-angle steel and the triangular wedge-shaped steel block according to the embodiment of the invention.
In the figure: 1 triangular wedge-shaped steel block, 2 equal angle steels, 3 1 st pipeline and 4 nd pipeline.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example 1
The invention discloses a roundness correction method for a large-diameter thin-wall steel pipe, which comprises the following steps of:
a. providing a plurality of equal-edge angle steels and a plurality of triangular wedge-shaped steel blocks matched with the equal-edge angle steels in shape;
b. fixing equal-edge angle steel 2 on the outer wall of the circumferential connector of the 1 st pipeline needing roundness correction in a spot welding manner;
referring to fig. 1 and 2, fig. 1 is a schematic view illustrating a connection structure of equal-angle steel and a large-diameter thin-walled steel pipe according to an embodiment of the present invention, and fig. 2 is a side view of fig. 1. As shown in the figure, the equilateral angle steel 2 is welded and fixed on the outer wall of the circumferential connector of the large-diameter thin-wall steel pipe.
c. Adjusting the number of the equilateral angle steels on the outer wall of the circumferential connector of the 1 st pipeline 3 according to the size and the deformation degree of the large-diameter thin-wall steel pipe; FIG. 3 is a schematic diagram illustrating the correction of the equal-angle steel and the triangular wedge-shaped steel block according to the embodiment of the invention. The equal-edge angle steel and the triangular wedge-shaped steel block are made of the same material.
d. Wedging the triangular wedge-shaped steel block 1 into the equilateral angle steel 2 along the circumferential outer wall of the 2 nd pipeline from the interface 4 of the 2 nd pipeline until the outer walls of the 1 st pipeline 3 and the 2 nd pipeline 4 are flush, and finishing the roundness correction and dismantling of the steel pipe.
e. And (3) finishing the roundness correction of the steel pipe, and spot-welding the equal angle steel 2 and the triangular wedge-shaped steel block 1 after the 1 st pipeline and the 2 nd pipeline are fixed. Fig. 4 is a schematic diagram illustrating the completion of the correction of the equal-angle steel and the triangular wedge-shaped steel block according to the embodiment of the invention.
The roundness correction method for the large-diameter thin-wall steel pipe has substantial characteristics and obvious technical progress, and the roundness correction of the steel pipe is carried out in a mode of matching the fixed angle steel and the movable wedge-shaped angle steel so as to ensure smooth assembly welding.
The roundness correction method for the large-diameter thin-wall steel pipe is applied to Zhanjiang steel coking large-diameter ventilating pipeline installation engineering, has an obvious effect, and is determined by relevant departments and units.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Accordingly, all equivalents are intended to fall within the scope of the invention, which is defined in the claims.
Claims (2)
1. A roundness correction method for a large-diameter thin-wall steel pipe is characterized by comprising the following steps:
a. providing a plurality of equal-edge angle steels and a plurality of triangular wedge-shaped steel blocks matched with the equal-edge angle steels in shape;
b. fixing equal-edge angle steel (2) on the outer wall of the circumferential connector of the 1 st pipeline needing roundness correction in a spot welding manner;
c. adjusting the number of the equilateral angle steels on the outer wall of the circumferential connector of the 1 st pipeline (3) according to the size and the deformation degree of the large-diameter thin-wall steel pipe;
d. wedging the triangular wedge-shaped steel block (1) into an equilateral angle steel (2) from the interface of the No. 2 pipeline (4) along the circumferential outer wall of the No. 2 pipeline until the outer walls of the No. 1 pipeline (3) and the No. 2 pipeline (4) are flush, and completing the roundness correction and dismantling of the steel pipe;
e. and (3) finishing the roundness correction of the steel pipe, and spot-welding the equal angle steel (2) and the triangular wedge-shaped steel block (1) after the 1 st pipeline and the 2 nd pipeline are fixed.
2. The method for correcting the roundness of the large-diameter thin-wall steel pipe according to claim 1, wherein the equal angle steel and the triangular wedge-shaped steel block are made of the same material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110667003.0A CN113477754A (en) | 2021-06-16 | 2021-06-16 | Roundness correction method for large-diameter thin-wall steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110667003.0A CN113477754A (en) | 2021-06-16 | 2021-06-16 | Roundness correction method for large-diameter thin-wall steel pipe |
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| Publication Number | Publication Date |
|---|---|
| CN113477754A true CN113477754A (en) | 2021-10-08 |
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| CN202110667003.0A Pending CN113477754A (en) | 2021-06-16 | 2021-06-16 | Roundness correction method for large-diameter thin-wall steel pipe |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506799A (en) * | 2012-06-21 | 2014-01-15 | 五冶集团上海有限公司 | Jack-type large diameter pipe orifice aligning device and using method |
| CN204075689U (en) * | 2014-08-04 | 2015-01-07 | 山东天齐置业集团股份有限公司 | The mixing valve mouth of pipe reserves adjuster |
| CN205166307U (en) * | 2015-12-04 | 2016-04-20 | 廊坊黎明气体有限公司 | Pipeline under pressure weld bond positioner |
| CN107931944A (en) * | 2017-11-30 | 2018-04-20 | 中国冶集团有限公司 | A kind of steel construction large-diameter pipeline butt welding erecting device and construction method |
| CN111589904A (en) * | 2019-12-18 | 2020-08-28 | 中国一冶集团有限公司 | Large-diameter steel pipe correction butt joint method |
| CN214290118U (en) * | 2020-12-24 | 2021-09-28 | 中交路桥建设有限公司 | Steel plate free edge deformation correcting device |
-
2021
- 2021-06-16 CN CN202110667003.0A patent/CN113477754A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506799A (en) * | 2012-06-21 | 2014-01-15 | 五冶集团上海有限公司 | Jack-type large diameter pipe orifice aligning device and using method |
| CN204075689U (en) * | 2014-08-04 | 2015-01-07 | 山东天齐置业集团股份有限公司 | The mixing valve mouth of pipe reserves adjuster |
| CN205166307U (en) * | 2015-12-04 | 2016-04-20 | 廊坊黎明气体有限公司 | Pipeline under pressure weld bond positioner |
| CN107931944A (en) * | 2017-11-30 | 2018-04-20 | 中国冶集团有限公司 | A kind of steel construction large-diameter pipeline butt welding erecting device and construction method |
| CN111589904A (en) * | 2019-12-18 | 2020-08-28 | 中国一冶集团有限公司 | Large-diameter steel pipe correction butt joint method |
| CN214290118U (en) * | 2020-12-24 | 2021-09-28 | 中交路桥建设有限公司 | Steel plate free edge deformation correcting device |
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Application publication date: 20211008 |
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