CN112008280A - Manufacturing method of rectangular flue elbow - Google Patents
Manufacturing method of rectangular flue elbow Download PDFInfo
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- CN112008280A CN112008280A CN202010887243.7A CN202010887243A CN112008280A CN 112008280 A CN112008280 A CN 112008280A CN 202010887243 A CN202010887243 A CN 202010887243A CN 112008280 A CN112008280 A CN 112008280A
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- steel plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
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- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a method for manufacturing a rectangular flue elbow, which comprises the following steps: a plurality of steel plates are tiled, spliced and welded into a whole steel plate; vertically welding wall plates at two ends of a rectangular elbow with radian on two sides of the width of the whole steel plate; arranging double-hook guide chains on two sides of the width of the whole steel plate, and buckling the double-hook guide chains with lifting lugs on two sides of the width of the whole steel plate; and welding the whole steel plate attaching part. The rectangular flue elbow manufacturing method disclosed by the application has the advantages that the welding amount is small, the probability of cross-shaped welding seams is reduced, and the reduction of the structural strength of the flue is avoided; the method is economical, and reduces the investment of manpower and material resources; simple manufacture and convenient processing.
Description
Technical Field
The invention relates to the technical field of metallurgical machinery, in particular to a method for manufacturing a rectangular flue elbow.
Background
In recent years, with the increasing attention of the country to the environmental protection problem, various technologies are adopted to save energy and reduce emission in domestic steel mills in order to respond to the national call, wherein the SCR denitration technology is widely applied and has advanced technology. The SCR denitration process mainly comprises an ammonia supply system, an ammonia spraying system, a catalyst, a flue gas pipeline and a control system.
The side wall plate of the rectangular flue elbow has a larger radian, and certain manufacturing difficulty exists. If the conventional manufacturing method of plate rolling and tailor welding is adopted, the following defects exist: first, the amount of welding increases; by adopting a plate rolling method, a whole steel plate needs to be cut into a plurality of small steel plates, and the small steel plates are rolled by a plate rolling machine and then are spliced and welded. Greatly increasing the welding amount and the probability of the cross welding seam of the whole component, and reducing the structural strength of the rectangular flue. Second, economic waste; the use of the plate bending machine and the increase of the welding amount need to invest more manpower and material resources, which causes economic waste. Thirdly, the subsequent manufacturing difficulty is increased; channel steel and I-steel need to be welded on the side wall plate with the radian of the rectangular flue so as to increase the strength, and if a method of rolling and welding together is adopted, the channel steel and the I-steel need to be welded on the rolled and welded steel plate, so that the construction is difficult.
Therefore, how to reduce the difficulty in manufacturing the rectangular flue is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide a method for manufacturing a rectangular flue elbow, which reduces the welding workload in the rectangular flue manufacturing process and the economic cost for manufacturing the rectangular flue by optimizing the rectangular flue manufacturing process.
In order to solve the technical problem, the invention provides a method for manufacturing a rectangular flue elbow, which comprises the following steps:
a plurality of steel plates are tiled, spliced and welded into a whole steel plate;
vertically welding wall plates at two ends of the rectangular elbow with radian on two sides of the width of the whole steel plate;
arranging double-hook guide chains on two sides of the width of the whole steel plate, and buckling the double-hook guide chains with lifting lugs on two sides of the width of the whole steel plate;
and welding the whole steel plate attaching part.
Preferably, the process of welding a plurality of steel plates into a whole steel plate by tiling and splicing further comprises:
and welding angle steel, channel steel and I-steel on the whole steel plate.
Preferably, set up the double hook and lead the chain in the width both sides of monoblock steel sheet, will the double hook lead the chain with the process of the width both sides lug buckle of monoblock steel sheet still includes:
and two hoisting calipers are arranged on the whole steel plate.
Preferably, the two hoisting calipers are symmetrically arranged along the length end of the whole steel block and close to the two width ends by taking the central point of the length end of the whole steel block as a symmetric center.
Preferably, the width of the single steel plate is greater than the sum of the width of the rectangular bend and the arc length of the arc portion of the wall plate.
Preferably, the length of the one-piece steel plate is greater than the length of the rectangular elbow.
Preferably, the angle of the rectangular elbow is no greater than 90 °.
The invention provides a method for manufacturing a rectangular flue elbow, which comprises the following steps: a plurality of steel plates are tiled, spliced and welded into a whole steel plate; vertically welding wall plates at two ends of a rectangular elbow with radian on two sides of the width of the whole steel plate; arranging double-hook guide chains on two sides of the width of the whole steel plate, and buckling the double-hook guide chains with lifting lugs on two sides of the width of the whole steel plate; and welding the whole steel plate attaching part. The rectangular flue elbow manufacturing method disclosed by the application has the advantages that the welding amount is small, the probability of cross-shaped welding seams is reduced, and the reduction of the structural strength of the flue is avoided; the method is economical, and reduces the investment of manpower and material resources; simple manufacture and convenient processing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
In one embodiment, the present invention mainly includes:
step 1: a plurality of steel plates are tiled, spliced and welded into a whole steel plate;
in the specific welding process, a plurality of steel plates are tiled, spliced and welded into a whole on the flat ground according to the specific size of the rectangular elbow.
Step 2: vertically welding wall plates at two ends of a rectangular elbow with radian on two sides of the width of the whole steel plate;
and welding required angle steel, channel steel and I-shaped steel on the whole steel plate for temporary reinforcement, and turning the manufactured steel plate by using a crane.
And step 3: arranging double-hook guide chains on two sides of the width of the whole steel plate, and buckling the double-hook guide chains with lifting lugs on two sides of the width of the whole steel plate;
two width end both sides at the steel sheet are arranged and are gone up two double hook guide chains, and the double hook of two double hook guide chains all need detain on two lugs that the width end was arranged on the steel sheet, and finally, utilize the loop wheel machine to hold the length of steel sheet slowly up, and the radian laminating of both ends wallboard is gone along with the steel sheet to the mode of both ends double hook guide chain consequently backward receipts.
And 4, step 4: and welding the whole steel plate attaching part.
In order to optimize the advantage that the manufacturing method of the rectangular flue elbow in the embodiment has simple manufacturing, the step 1: with polylith steel sheet tiling concatenation weld become monoblock steel sheet, its process still includes:
the angle steel, the channel steel and the I-steel are welded on the whole steel plate, and the angle steel, the channel steel and the I-steel are welded at the designated positions in advance, so that the angle steel, the channel steel and the I-steel can be prevented from being welded after the rectangular flue elbow structure is formed, and the manufacturing efficiency is improved.
Based on this, step 3: set up the double hook in the width both sides of monoblock steel sheet and lead the chain, lead the double hook and lead the width both sides lug buckle of chain and monoblock steel sheet, its process still includes:
two hoisting calipers are installed on the whole steel plate. When the crane hoists the rectangular flue elbow, the whole weight of the rectangular flue elbow needs to be hoisted, so that the rectangular flue elbow can have a large pulling force, the double-hook guide chain and the lifting lug are fixed through hoisting calipers after being connected, the connection stability of the lifting lug and the double-hook guide chain is ensured, and the hoisting safety is improved.
Based on the setting of above-mentioned hoist and mount calliper, two hoist and mount calliper use the central point of monoblock steel length end as the symmetric center along the length end symmetry of monoblock steel and be close to two width end and arrange. Because the flue is the rectangle flue elbow, consequently, when hoist and mount, hoist to the length direction of flue, stability when can improving rectangle flue hoist and mount improves the security when hoist and mount.
Furthermore, the width of the whole steel plate is greater than the sum of the width of the rectangular elbow and the arc length of the radian part of the wall plate; the length of the whole steel plate is larger than that of the rectangular elbow. The width of the whole steel plate is slightly larger than the sum of the width of the bottom plate of the rectangular elbow and the arc length of the radian part of the side wall plate, and the length of the whole steel plate is slightly larger than the length of the whole rectangular elbow, so that the welded flue meets the installation requirement.
It should be noted that, the angle of the rectangular elbow is not greater than 90 °, and through experiments, the flue manufacturing method provided by the application is more suitable for the rectangular elbow of which the angle is not greater than 90 °, and is not particularly limited herein.
In summary, the method for manufacturing the rectangular flue elbow provided by the embodiment mainly includes: a plurality of steel plates are tiled, spliced and welded into a whole steel plate; vertically welding wall plates at two ends of a rectangular elbow with radian on two sides of the width of the whole steel plate; arranging double-hook guide chains on two sides of the width of the whole steel plate, and buckling the double-hook guide chains with lifting lugs on two sides of the width of the whole steel plate; and welding the whole steel plate attaching part. The rectangular flue elbow manufacturing method disclosed by the application has the advantages that the welding amount is small, the probability of cross-shaped welding seams is reduced, and the reduction of the structural strength of the flue is avoided; the method is economical, and reduces the investment of manpower and material resources; simple manufacture and convenient processing.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A method for manufacturing a rectangular flue elbow is characterized by comprising the following steps:
a plurality of steel plates are tiled, spliced and welded into a whole steel plate;
vertically welding wall plates at two ends of the rectangular elbow with radian on two sides of the width of the whole steel plate;
arranging double-hook guide chains on two sides of the width of the whole steel plate, and buckling the double-hook guide chains with lifting lugs on two sides of the width of the whole steel plate;
and welding the whole steel plate attaching part.
2. The method for manufacturing the rectangular flue elbow as claimed in claim 1, wherein the process of tiling, splicing and welding a plurality of steel plates into a whole steel plate further comprises:
and welding angle steel, channel steel and I-steel on the whole steel plate.
3. The method for manufacturing the rectangular flue elbow as claimed in claim 2, wherein the double-hook guide chains are arranged on two sides of the width of the whole steel plate, and the process of buckling the double-hook guide chains with the lifting lugs on two sides of the width of the whole steel plate further comprises the following steps:
and two hoisting calipers are arranged on the whole steel plate.
4. The method of claim 3, wherein the two lifting calipers are symmetrically arranged along the length end of the piece of steel and close to the two width ends with the center point of the length end of the piece of steel as the center of symmetry.
5. The method of claim 4 wherein the width of the monolithic steel plate is greater than the sum of the width of the rectangular bend and the arc length of the arcuate portion of the wall plate.
6. The method of claim 5, wherein the length of the monolithic steel plate is greater than the length of the rectangular bend.
7. The method of making a rectangular flue bend according to claim 5, wherein the angle of the rectangular bend is no greater than 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010887243.7A CN112008280A (en) | 2020-08-28 | 2020-08-28 | Manufacturing method of rectangular flue elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010887243.7A CN112008280A (en) | 2020-08-28 | 2020-08-28 | Manufacturing method of rectangular flue elbow |
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| CN112008280A true CN112008280A (en) | 2020-12-01 |
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| CN202010887243.7A Pending CN112008280A (en) | 2020-08-28 | 2020-08-28 | Manufacturing method of rectangular flue elbow |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001004088A (en) * | 1999-06-21 | 2001-01-09 | Ishikawajima Harima Heavy Ind Co Ltd | Manufacture of diametrically different miter bend |
| CN102941446A (en) * | 2012-11-15 | 2013-02-27 | 江阴中南重工股份有限公司 | Production method for equal-strength symmetrical weld joint steel plate elbow |
| CN104759856A (en) * | 2015-04-22 | 2015-07-08 | 中国一冶集团有限公司 | Manufacturing and installing method for upper cone on dry quenching furnace shell |
| CN104801565A (en) * | 2015-04-23 | 2015-07-29 | 铜陵有色建安钢构有限责任公司 | Manufacturing method of large-diameter pipeline elbows |
| CN107230956A (en) * | 2017-07-18 | 2017-10-03 | 北京城建五建设集团有限公司 | A kind of construction method of arc cable trunking structure |
| CN109163159A (en) * | 2018-09-17 | 2019-01-08 | 福建龙净环保股份有限公司 | Diversion component and preparation method thereof for variable cross-section elbow |
-
2020
- 2020-08-28 CN CN202010887243.7A patent/CN112008280A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001004088A (en) * | 1999-06-21 | 2001-01-09 | Ishikawajima Harima Heavy Ind Co Ltd | Manufacture of diametrically different miter bend |
| CN102941446A (en) * | 2012-11-15 | 2013-02-27 | 江阴中南重工股份有限公司 | Production method for equal-strength symmetrical weld joint steel plate elbow |
| CN104759856A (en) * | 2015-04-22 | 2015-07-08 | 中国一冶集团有限公司 | Manufacturing and installing method for upper cone on dry quenching furnace shell |
| CN104801565A (en) * | 2015-04-23 | 2015-07-29 | 铜陵有色建安钢构有限责任公司 | Manufacturing method of large-diameter pipeline elbows |
| CN107230956A (en) * | 2017-07-18 | 2017-10-03 | 北京城建五建设集团有限公司 | A kind of construction method of arc cable trunking structure |
| CN109163159A (en) * | 2018-09-17 | 2019-01-08 | 福建龙净环保股份有限公司 | Diversion component and preparation method thereof for variable cross-section elbow |
Non-Patent Citations (1)
| Title |
|---|
| 陈华杰等: "《简明冷作钣金工手册》", 30 April 2003 * |
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Application publication date: 20201201 |