CN109226329A - A kind of square tube formation system and method - Google Patents
A kind of square tube formation system and method Download PDFInfo
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- CN109226329A CN109226329A CN201811236676.5A CN201811236676A CN109226329A CN 109226329 A CN109226329 A CN 109226329A CN 201811236676 A CN201811236676 A CN 201811236676A CN 109226329 A CN109226329 A CN 109226329A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 16
- 238000000465 moulding Methods 0.000 claims abstract description 34
- 238000003466 welding Methods 0.000 claims abstract description 33
- 238000007493 shaping process Methods 0.000 claims abstract description 31
- 238000005452 bending Methods 0.000 claims abstract description 10
- 238000004513 sizing Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 abstract description 14
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000005096 rolling process Methods 0.000 abstract description 4
- 230000013011 mating Effects 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000013003 hot bending Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0803—Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/083—Supply, or operations combined with supply, of strip material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a kind of square tube formation system and methods, belong to steel clod wash row field, for the larger specification square tube molding of clod wash, the system comprises the pinch units of successively mating setting, shaping machine set, unit, mm finishing mill unit and skin pass mill group are welded, the shaping machine set is used to for strip being bent into the male type square tube with radian, and by obtaining high quality square tube after welding unit, finish rolling skin pass mill group.The present invention can carry out curved arc processing to strip forming initial passage, it can effectively prevent the indent unstable phenomenon occurred in big-size thinning plastic pipe forming process in the process of bending, be conducive to the angle R molding up and down, corner bending place thinning phenomenon is effectively avoided, square tube Forming Quality is improved.
Description
Technical field
The invention belongs to steel clod wash industry technology fields, are related to larger specification square tube moulding process and production line.
Background technique
For now, square tube molding is generally divided into two classes, and the first kind is circle into side, i.e., steel plate is by being molded into circle
Then pipe forms square tube by finish rolling, the second class is direct Cheng Fang, i.e., is bent to form square tube by multi-pass, then welding essence
It rolls.Circle is at square advantage are as follows: molding good product quality, unit shaping speed is fast, for example the angle R is impartial, smooth welded seam, outside product
It sees, but circle is relatively low at square stock utilization, profile power is big, and production passage is more, and the public property of roll is poor, thick in production
When wall pipe, if hole type design is unreasonable to be easy the disadvantages of making metal seriously accumulate in corner or even cause pressure break；
Directly have the advantage that process equipment can simply reduce investment at square technique, the spreading width of steel band is small, rule
Measured length is light-weight, saves material；Roll is composed of roller side, and public property is strong, and roll spare part is few, and forming force is smaller, energy
Consume low, but the disadvantage is that there are interior angle R is uneven, corner is easy thinning, and big-size thinning plastic tube capacity is also easy to produce indent unstability, and its
Forming Quality and dimensional accuracy will be lower than directly the disadvantages of at square technique.
The status of country's clod wash industry at present, relative to " first justifying rear " technique, " direct Cheng Fang " technique is more suitable for the country
Enterprise uses.
Summary of the invention
In view of ' circle at side ' and ' direct Cheng Fang ' respectively has its advantage and disadvantage, the purpose of the present invention is to provide a kind of square tube at
Type system and method, is the mutation mode of " direct Cheng Fang ", that is, has directly few at side's saving material, molding passage, molding
The advantages that power is small, and have " first justify rear " Forming Quality good, the advantages such as dimensional accuracy is low, while can be avoided big-size thinning plastic
The disadvantages of pipe indent unstability, the angle R is thinned or accumulates.
The present invention is achieved through the following technical solutions:
A kind of square tube formation system provided by the invention and method, including what is be sequentially arranged according to square tube forming direction
For by square tube form pinch unit of the foreboard with centering, be used to the strip being bent into four sidebands through multi-pass it is cambered
Male type square tube shaping machine set, for by male type square tube closure mouth carry out Seal welding welding unit, be used for by
Mm finishing mill unit that male type square tube after welding carries out shaping and smooth for being aligned to the square tube after sizing
Unit.
Using the above scheme, which is bent into the male type side with radian for strip by the roll with radian
Quarter bend, and by mm finishing mill unit, skin pass mill group carries out finishing type.A time other side's quarter bend top is bent into before the angle а forms
Arc forms the first passage in а and carries out being bent into arc simultaneously to square tube bottom edge, and arc-height can use the 1/12~1/15 of side length L；?
A time other side's quarter bend two sidewalls carry out being bent into arc before the angle β forms, and form the first passage in β and carry out simultaneously to square tube bottom edge
It is bent into arc, arc-height can use the 1/9~1/12 of side length L1.In this way, the arc sequentially formed, can resist square tube forming process
In indent unstable phenomenon, simultaneously as bending camber generate angle, the forming angle at the angle а, the angle β can be reduced to a certain degree
Degree is conducive to the angle а, forms at the angle β, finally passes through finishing, smooth calibration, Forming Quality and dimensional accuracy by male type square tube
It is higher than directly into square molding mode.The arc length forming process is real curved, and molding arc length radius is by product size and the upper and lower angle R
Radius determines that arc length starting the arc position and the angle R arc length end position are tangent；The angle а forming frame, the angle β forming frame and closure mouth at
The roll pass of type rack need to have plain-barreled roll to become the bowed roller with radian, and bowed roller is bonded completely with strip in forming process.
Further, the bending passage of the shaping machine set has 11-13 times.
Further, the kind of drive of the shaping machine set uses underdrive mode, the mill speed of preceding a time compared to
The mill speed of a time is in incrementally afterwards.
Further, the shaping machine set includes side length into arc rack, the angle а forming frame, the angle β forming frame and closure mouth
Forming frame.
Further, the side length includes at arc rack, the angle а forming frame, the angle β forming frame and closure mouth forming frame
There are ontology, the upper horizontal roller on ontology and lower horizontal roller and the drive for driving upper horizontal roller and lower horizontal roller to rotate
Motivation structure；Being closed mouth forming frame further includes the vertical rod having positioned at ontology two sides.
Further, the pinch unit, shaping machine set, welding unit, mm finishing mill unit, skin pass mill group respectively between be provided with
Transfer roller.
Further, the welding manner of the welding unit uses ratio-frequency welding or submerged-arc welding.
The present invention utilizes the forming method of above-mentioned square tube formation system, specifically comprises the following steps:
It send after strip after uncoiling is carried out centering via pinch unit to shaping machine set；
It send after strip is bent into the cambered male type square tube of four sidebands via shaping machine set multi-pass to bonding machine
Group；
It send after male type square tube closure mouth is carried out Seal welding via welding unit to mm finishing mill unit；
It send after male type square tube after welding is carried out shaping via mm finishing mill unit to skin pass mill group；
Molding square tube is obtained after square tube after sizing is aligned via skin pass mill group.
Preferably, the multi-pass bending mode of the shaping machine set be go to the bottom the concordant formula method of forming, the method for forming of going up a hill or under
The mountain method of forming.
The present invention has the advantages that
1, the present invention makes full use of roll arc that square tube is shaped to male type pipe, is effectively offset by the radian to arch upward
Indent unstable phenomenon in big-size thinning plastic pipe forming process；
2, the present invention makes full use of the advantages of " circle is at side " and " direct Cheng Fang " two kinds of technique, using the side of the arc side of being formed
Formula does not need circle and forms at the multi-pass of side, while having the advantages that " circle is at side " dimensional accuracy is high
3, of the invention since arc has certain bending angle, the angle а, the angle β can form male type side without 90-degree bent
Quarter bend improves the disadvantage directly at the Forming Quality difference at the square angle а, the angle β.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target of the invention and other advantages can be realized by following specification and
It obtains.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
The detailed description of one step, in which:
Fig. 1 is formation system flow arrangement figure of the present invention；
Fig. 2 is square tube top in the embodiment of the present invention 1 into arc；
Fig. 3 is square tube two sides in the embodiment of the present invention 1 into arc；
Fig. 4 is square tube bottom edge in the embodiment of the present invention 1 into arc；
Fig. 5 is square tube forming process figure in the embodiment of the present invention 1；
Fig. 6 is male type square tube final molding shape in the embodiment of the present invention 1
Fig. 7 is square tube final molding section after finish rolling in the embodiment of the present invention 1
Fig. 8 is square tube top in the embodiment of the present invention 1 into arc roll shape
Fig. 9 is square tube two sides in the embodiment of the present invention 1 into arc roll shape；
Figure 10 is square tube bottom edge in the embodiment of the present invention 1 into arc roll shape；
Figure 11 is square tube opening close segments roll profile in the embodiment of the present invention 1
Figure 12 is square tube mm finishing mill unit horizontal roller and vertical rod roll shape in the embodiment of the present invention 1；
Appended drawing reference in figure: unit 1, shaping machine set 2, welding unit 3, mm finishing mill unit 4, skin pass mill group 5 are pinched.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that diagram provided in following embodiment is only to show
Meaning mode illustrates basic conception of the invention, and in the absence of conflict, the feature in following embodiment and embodiment can phase
Mutually combination.
Embodiment 1
As shown in Figure 1, the present invention provides a kind of novel square tube moulding process system, for larger specification square tube at
Type, the big specification refer to can be more than with cross-sectional maximum dimension 250mm square tube；Formation system includes along strip molding side
To pinch unit 1, shaping machine set 2, the welding unit 3, mm finishing mill unit 4, skin pass mill group 5 set gradually, wherein pinch unit 1
For strip molding before lateral centering, and for strip provide stablize conveying power, shaping machine set 2 by strip pass through multi-pass at
Type is shaped to raised type square tube by strip, after opening closure, carries out seal welding at welding unit 3, formation is closed
Section is closed, finally via the sizing of mm finishing mill unit 4, is formed using the final aligning of skin pass mill group 5.
Workpiece is shaped to raised type square tube by strip by the shaping machine set 2, and four side of section is arc-shaped.Molding machine
Group is made of the rack of 11-13 passage, and molding onward impulse is driven by lower horizontal roller and is provided, and upper horizontal roller and vertical rod are auxiliary
Roller does not provide power.Square tube forming process figure as shown in Figure 5, forming process is successively are as follows: square tube top is at arc-side's square
The angle pipe а molding-square tube two sidewalls are at arc-square tube bottom at the arc-angle square tube β molding-square tube closure mouth closing.Square square
Pipe top at forming shape after arc as shown in Fig. 2, square tube two sidewalls at forming shape after arc as shown in figure 3, square tube bottom
At forming shape after arc as shown in figure 4, final molding section is as shown in Figure 6.Raised type square tube is sealed via welding unit
After mouth welding, successively pass through mm finishing mill unit, skin pass mill group, final molding is the square tube of high dimensional accuracy, section configuration such as Fig. 7
It is shown.
Preferably, the shaping machine set 2 generally 11 to 13 passages of setting, square tube top can be used at arc, the molding of the angle а
Real curved, roll shape can refer to shown in Fig. 8, and arc radius can be determined according to square tube compact dimensions.Square tube two sides are at arc, roller
Type can refer to shown in Fig. 9；At arc, the molding roll shape in the angle β be can refer to as shown in Figure 10 for square tube bottom, be closed mouth stage roller
Type can refer to shown in Figure 11, and closure gives stage needs and adds the vertical rod molding of auxiliary.After solder up, finishing mill roll shape
It can refer to shown in Figure 12.
Workflow of the invention is as shown in Figure 1, the strip after uncoiling is quickly sent to via clamping and conveying device centering by roller-way
Shaping machine set carries out seal welding by welding unit after 11-13 passage bending forming, by mm finishing mill unit the final shaping,
Skin pass mill group is aligned, and the high square tube fashioned iron of dimensional accuracy is ultimately formed.The present invention sufficiently combines " direct Cheng Fang " and " first
The advantages of two kinds of moulding process in circle rear ", strip is first bent into camber, then carries out the angle а, the molding of the angle β, both ensure that Gao Pin
Matter, the molding of the square tube fashioned iron of high quality, and molding passage is reduced, product quality is high, and cost control is with the obvious advantage.
Embodiment 2
This example difference from example 1 is that, the molding process of embodiment 1 is followed successively by square tube top into arc-side
The angle quarter bend а molding-square tube two sidewalls are closed at arc-square tube bottom at the arc-angle square tube β molding-square tube closure mouth, this
In example, top is at arc, two sidewalls at arc and below at arc and the angle а, the molding molding passage sequencing interchangeable in the angle β, elder generation
By steel plate bending camber, then the angle а, the molding of the angle β are being carried out.
Embodiment 3
This example difference from example 1 is that, 1 light plate of embodiment is room temperature cold roll forming, this example can be used for
The big specification square tube hot bending shape of cut deal.Roll shape shown in example 1 can be used in its roll profile, and roll surface uses heat-resisting material,
Using board rolling waste heat after molding, it is directly entered shaping machine set after slitting, carries out hot bending shape, power can be effectively reduced
It can parameter.
It is merely a preferred embodiment of the present invention, is not intended to restrict the invention, it is clear that those skilled in the art described in upper
Various changes and modifications can be made to the invention without departing from the spirit and scope of the present invention.If in this way, this of the invention
Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to encompass these and changes a little modifications and variations
Including dynamic and modification.
Claims (9)
1. a kind of square tube formation system, which is characterized in that including according to square tube forming direction be sequentially arranged for will be square
Quarter bend molding pinch unit (1) of the foreboard with centering, for the strip to be bent into cambered outer of four sidebands through multi-pass
The shaping machine set (2) of convex square tube, is used for the welding unit (3) for male type square tube to be closed to mouth progress Seal welding
By mm finishing mill unit (4) that the male type square tube after welding carries out shaping and for being aligned to the square tube after sizing
Skin pass mill group (5).
2. square tube formation system according to claim 1, which is characterized in that the bending passage of the shaping machine set has
11-13 times.
3. square tube formation system according to claim 2, which is characterized in that the kind of drive of the shaping machine set uses
Underdrive mode, the mill speed of preceding a time are in incrementally compared to the mill speed of rear a time.
4. square tube formation system according to claim 1-3, which is characterized in that the shaping machine set includes
Side length is at arc rack, the angle а forming frame, the angle β forming frame and closure mouth forming frame.
5. square tube formation system according to claim 4, which is characterized in that the side length is at arc rack, the angle а molding machine
Frame, the angle β forming frame and closure mouth forming frame include ontology, the upper horizontal roller on ontology and lower horizontal roller, with
And the driving mechanism for driving upper horizontal roller and lower horizontal roller to rotate；Being closed mouth forming frame further includes having positioned at ontology two sides
Vertical rod.
6. square tube formation system according to claim 1, which is characterized in that the pinch unit, shaping machine set, welding
Unit, mm finishing mill unit, skin pass mill group respectively between be provided with transfer roller.
7. square tube formation system according to claim 1, which is characterized in that the welding manner of the welding unit uses
Ratio-frequency welding or submerged-arc welding.
8. utilizing the forming method of the described in any item square tube formation systems of claim 1-7, which is characterized in that including as follows
Step:
It send after strip after uncoiling is carried out centering via pinch unit to shaping machine set；
Strip is bent into after the cambered male type square tube of four sidebands via shaping machine set multi-pass and is sent to welding unit；
It send after male type square tube closure mouth is carried out Seal welding via welding unit to mm finishing mill unit；
It send after male type square tube after welding is carried out shaping via mm finishing mill unit to skin pass mill group；
Molding square tube is obtained after square tube after sizing is aligned via skin pass mill group.
9. forming method according to claim 7, which is characterized in that under the multi-pass bending mode of the shaping machine set is
The concordant formula method of forming in bottom, the method for forming of going up a hill or the method for forming of going down the hill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811236676.5A CN109226329B (en) | 2018-10-23 | 2018-10-23 | Square tube forming system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811236676.5A CN109226329B (en) | 2018-10-23 | 2018-10-23 | Square tube forming system and method |
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| Publication Number | Publication Date |
|---|---|
| CN109226329A true CN109226329A (en) | 2019-01-18 |
| CN109226329B CN109226329B (en) | 2023-11-28 |
Family
ID=65081427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811236676.5A Active CN109226329B (en) | 2018-10-23 | 2018-10-23 | Square tube forming system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109226329B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116145A (en) * | 2019-04-22 | 2019-08-13 | 太原科技大学 | A kind of forming method of straight seam welded pipe |
| CN111215475A (en) * | 2019-10-28 | 2020-06-02 | 武汉钢铁江北集团冷弯型钢有限公司 | Cold bending forming method of square sharp-corner steel pipe |
| CN112828070A (en) * | 2020-12-31 | 2021-05-25 | 燕山大学 | Cold bending forming process of square and rectangular pipe |
| CN113118231A (en) * | 2021-04-21 | 2021-07-16 | 中冶赛迪技术研究中心有限公司 | General process for closed-end steel hot roll bending production |
| CN113118232A (en) * | 2021-04-21 | 2021-07-16 | 中冶赛迪技术研究中心有限公司 | Closed-type steel hot roll bending production process |
| CN114101374A (en) * | 2021-10-29 | 2022-03-01 | 武汉钢铁江北集团冷弯型钢有限公司 | Round-to-square production method without roller replacement |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116145A (en) * | 2019-04-22 | 2019-08-13 | 太原科技大学 | A kind of forming method of straight seam welded pipe |
| CN110116145B (en) * | 2019-04-22 | 2020-07-10 | 太原科技大学 | Forming method of straight welded pipe |
| CN111215475A (en) * | 2019-10-28 | 2020-06-02 | 武汉钢铁江北集团冷弯型钢有限公司 | Cold bending forming method of square sharp-corner steel pipe |
| CN111215475B (en) * | 2019-10-28 | 2022-01-21 | 武汉钢铁江北集团冷弯型钢有限公司 | Cold bending forming method of square sharp-corner steel pipe |
| CN112828070A (en) * | 2020-12-31 | 2021-05-25 | 燕山大学 | Cold bending forming process of square and rectangular pipe |
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| CN113118231A (en) * | 2021-04-21 | 2021-07-16 | 中冶赛迪技术研究中心有限公司 | General process for closed-end steel hot roll bending production |
| CN113118232A (en) * | 2021-04-21 | 2021-07-16 | 中冶赛迪技术研究中心有限公司 | Closed-type steel hot roll bending production process |
| CN114101374A (en) * | 2021-10-29 | 2022-03-01 | 武汉钢铁江北集团冷弯型钢有限公司 | Round-to-square production method without roller replacement |
| CN114101374B (en) * | 2021-10-29 | 2024-04-12 | 武汉钢铁江北集团冷弯型钢有限公司 | Round square production method without roll replacement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109226329B (en) | 2023-11-28 |
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