CN106944510B - A kind of roll bending formation method of complex section cold-rolled forming section - Google Patents
A kind of roll bending formation method of complex section cold-rolled forming section Download PDFInfo
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- CN106944510B CN106944510B CN201710260099.2A CN201710260099A CN106944510B CN 106944510 B CN106944510 B CN 106944510B CN 201710260099 A CN201710260099 A CN 201710260099A CN 106944510 B CN106944510 B CN 106944510B
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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
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
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Abstract
The present invention provides a kind of roll bending formation method-UDT (USTB-Durable T) umbellate form angle control method of complex section cold-rolled forming section, belongs to roll bending formation technical field.This method carries out the stile of complex section cold-rolled forming section and the bending of eaves side during roll bending formation simultaneously, and eaves side bending angle is greater than stile bending angle, and the roller flower of the continuous roll bending formation of multi-pass, formation is in umbellate form.This method has many advantages, such as that efficient, section material, energy conservation and Product Precision are high, the Strips such as lightweight high-strength steel or super-high strength steel can be well solved easily to deviate in complex section roll bending formation process reference point and easily the problems such as side wave mass defect occur, realize that the high precision roller roll forming of complex section cold-rolled forming section provides new method to stablize batch.
Description
Technical field
The present invention relates to roll bending formation technical fields, particularly relate to a kind of roll bending formation side of complex section cold-rolled forming section
Method.
Background technique
Roll bending fashioned iron is a kind of economical profile that purposes is very extensive.Since its cross section structure is rationally (generally according to making
With requiring to design), description is various, geometric dimension is accurate and modern society rationalizes material lightweight, cross sectional shape
With the requirement of functionalization, thus almost spread people's daily life every field.With the continuous progress of technology and use
Continuous improvement of the family to product requirement, cold-rolled forming section also develop towards more complicated, accurate direction.But due to roll forming mistake
Journey complex effects factor is numerous, the Strips roll bending formation process such as lightweight high-strength steel or super-high strength steel deformation rule not yet by
People grasp completely, thus to roll bending fashioned iron product, the especially hole type design of complex section fashioned iron product also mainly according to
Rely the knowhow of designer.Compared with common channel steel, its cross sectional shape of complex section fashioned iron is complicated and general asymmetry, exists
Serious heterogeneous deformation, molding difficulty is big, and the quantity of bending angle significantly increases compared to common channel steel.Bending process is multiple
One of the key technology of the roll bending formation process of miscellaneous section fashioned iron, the moulding process of bending angle and the reasonable distribution of deformation angle influence
The Forming Qualities of final products.
There are mainly two types of the bending angle regulation methods for being directed to complex section fashioned iron at present:
One is the small conjunction hand-type angle control methods how expanding (day) He Liuji English and proposing: progress stile bending first, the 2nd
~3 passages start eaves edge forming；This method is more advantageous to the lateral displacement of strip material during complex section is molding,
Material traverse feed is more abundant, but since eaves side in the 2nd~3 passage starts to form, leads to the eaves side end of complex section fashioned iron
Point has excessive hoisting depth, causes strip to generate biggish speed difference on same cross section, to make complex section fashioned iron
Eaves side end portion there is the deformation of biggish longitudinal stretching, this, which will lead to complex section fashioned iron edge during molding, occurs
The defect of side wave etc.；
Another kind is the flatbed angle control method proposed by Wang Xianjin: eaves side carries out simultaneously with stile bending, and is bent
Angle is equal；This method improves the defect of side wave since eaves side and stile bending carry out simultaneously, but since each transition is disconnected
The eaves side in face is on parallel horizontal plane, so inflection point lateral shift easily occurs in former passages of bending process,
Especially when high-strength steel forms, this defect is especially prominent.This is just needed when carrying out Roller Design, and the roll of former passages needs
The edge-blocking device of certain altitude is designed, to solve the phenomenon that strip occurred in actual production process deviates.Current this side
Method is widely used, and can solve the side wave that occurs in forming process and offset defect, but there is also forming cost it is excessively high and at
The problems such as type precision is difficult to ensure sometimes.
Summary of the invention
The present invention is directed to the moulding process institute problem of both the above complex section fashioned iron bending method, Yi Jigao
The material property of strong steel and super-high strength steel strip influences roll bending formation process, provides a kind of roll bending of complex section cold-rolled forming section
Forming method --- UDT (USTB-Durable.T) umbellate form angle control method.
This method specifically: carry out the stile of complex section cold-rolled forming section and the bending of eaves side simultaneously, and eaves side bending angle
Greater than stile bending angle, the roller flower of more than three passages continuous roll bending formations, formation is in umbellate form.
The advantageous effects of the above technical solutions of the present invention are as follows:
This method has many advantages, such as that efficient, section material, energy conservation and Product Precision are high, can well solve complex section clod wash type
Steel forming process datum mark easily deviates and easily the problems such as side wave mass defect occurs, realizes complex section clod wash type to stablize batch
The high precision roller roll forming of steel provides new method.
Detailed description of the invention
Fig. 1 is the umbrella shape roller flower schematic diagram of the roll bending formation method of complex section cold-rolled forming section of the invention；
Fig. 2 complex section fashioned iron bent angle position；
Fig. 3 is the cross section parameter schematic diagram of the cage guide of complex section shape in the embodiment of the present invention；
Fig. 4 is that hand-type angle control method roller flower process figure is closed in the embodiment of the present invention；
Fig. 5 be closed in the embodiment of the present invention maximum longitudinal strain value suffered by hand-type angle control method or so eaves side end portion with
The yield limit value comparison diagram of material；
Fig. 6 is that hand-type angle control method simulation result diagram is closed in the embodiment of the present invention；
Fig. 7 is flatbed angle control method roller flower process figure in the embodiment of the present invention；
Fig. 8 be in the embodiment of the present invention maximum longitudinal strain value suffered by flatbed angle control method or so eaves side end portion with
The yield limit value comparison diagram of material；
Fig. 9 is flatbed angle control method simulation result diagram in the embodiment of the present invention；
Figure 10 is maximum longitudinal strain value suffered by UDT umbellate form angle control method or so eaves side end portion in the embodiment of the present invention
With the yield limit value comparison diagram of material；
Figure 11 is UDT umbellate form angle control method simulation result diagram in the embodiment of the present invention.
Wherein: 1- eaves side；2- stile.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of roll bending formation method of complex section cold-rolled forming section.
Certain company research and development a complex section shape cage guide, product cross section parameter request as shown in figure 3, its
In, thickness t=1.5mm.It can determine that molding passage is 8 according to design parameter, and to 21 bend angles alphas of eaves side of complex section fashioned iron
There are 3 kinds of different angles to regulate and control method with the formulation of the bending sequence of 22 bending angle β of stile, passes through DTM linear simulation pair
The method of these three complex section fashioned iron compares and analyzes.The available prepared complex section fashioned iron of three kinds of methods forms work
Skill such as table 1:
The moulding process of the cage guide distinct methods of 1.1 complex section shape of table
1, it closes hand-type angle control method: carrying out the stile bending of 2 passages first, back pass then carries out stile simultaneously
It is bent with eaves side, and stile bending angle β is greater than eaves side bend angles alpha, Fig. 4 is the roller flower process figure for closing hand-type angle control method.
Using DTM linear simulation, to complex section fashioned iron eaves side and stile, suffered maximum longitudinal strain value is carried out per pass
Analysis, using closing the complex section fashioned iron eaves side of hand-type angle control method suffered maximum longitudinal strain value such as Fig. 5 per pass.By
Known to Fig. 5: eaves side per pass suffered maximum longitudinal strain value all exceed the strip material yield limit value and numerical value it is larger.
And the defect by occurring side wave known to simulation analysis, as shown in Figure 6.This defect in process of production also when have out
It is existing.
2, flatbed angle control method: eaves side and stile bending carry out simultaneously, and bending angle is equal.Fig. 7 is flatbed
The roller flower process figure of angle control method.
Simulation result as shown in figure 8, the forming technology complex section fashioned iron eaves side end portion of this kind of bending method per pass
Suffered longitudinal strain maximum value has significant reduction compared with closing hand-type angle control method before, suffered maximum vertical per pass
To strain value numerical values recited closer to strip material yield limit value, but strip in the 3rd passage between the 4th passage
There is difference in longitudinal strain value suffered by the eaves side end portion of the left and right sides, this means that strip in forming process by the 3rd
There is apparent asymmetry when passage is to 4 passage or so, as shown in figure 9, the phenomenon that i.e. strip deviates.
3, UDT umbellate form angle control method: as shown in Fig. 2, simultaneously by the stile of complex section cold-rolled forming section and the bending of eaves side
It carries out, and eaves side bend angles alpha is greater than stile bending angle β.Fig. 1 is the umbrella shape roller flower process figure of UDT umbellate form angle control method.
Maximum longitudinal strain suffered by the left and right eaves side end portion of DTM emulation is carried out for the moulding process of this kind of bending method
Value and the yield limit value comparison of material are as shown in Figure 10, it can be seen that complex section fashioned iron eaves side end portion in forming process exists
Suffered maximum longitudinal strain value is controlled well near strip Materials Yield Limit per pass, UDT umbellate form angle tune
Control method simulation result such as Figure 11 closes the regulation of hand-type angle relative to the first and carries out stile bending first, is added after 2~3 passages
The curved method of eaves edge forming, which is compared, can effectively avoid complex section fashioned iron from easily occurring the quality of side wave in forming process
Defect；The eaves side of compared to second flatbed angle control method carries out simultaneously with stile bending simultaneously, and bending angle is equal
Bending method complex section section steel edge at left and right sides of the end suffered by longitudinal strain value also there is not difference, i.e. the bending side
Complex section fashioned iron can be effectively prevented from existing in the inflection point that former passages occur offset in the moulding process forming process of method
The generation of elephant guarantees the production of complex section fashioned iron product.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (1)
1. a kind of roll bending formation method of complex section cold-rolled forming section, it is characterised in that: complex section cold-rolled forming section stile and eaves
The bending on side carries out the stile of the complex section cold-rolled forming section and the bending of eaves side since the second passage simultaneously, and eaves side
Bending angle is greater than stile bending angle, and the stile of the complex section cold-rolled forming section is curved with eaves side by the above continuous rolling of three passages
The roller flower of type, formation is in umbellate form, and by complex section fashioned iron, eaves side end portion is longitudinal in maximum suffered per pass in forming process
Strain value controls near strip Materials Yield Limit, to avoid occurring side wave mass defect in forming process, and controls
Complex section section steel edge at left and right sides of the end suffered by longitudinal strain value be not in difference, to avoid in forming process
There is inflection point shift phenomenon；The complex section roll bending fashioned iron, material refer to lightweight high-strength steel and super-high strength steel.
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| CN201710260099.2A CN106944510B (en) | 2017-04-20 | 2017-04-20 | A kind of roll bending formation method of complex section cold-rolled forming section |
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| CN106944510B true CN106944510B (en) | 2019-10-11 |
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| CN108941271B (en) * | 2018-06-26 | 2020-02-07 | 北京科技大学 | Roll bending forming springback fusion control method for ultrahigh-strength steel member with complex section |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172707A (en) * | 1997-05-07 | 1998-02-11 | 武钢集团汉口轧钢厂 | Method for manufacturing railway open wagon side pillar |
| CN101168224A (en) * | 2007-11-30 | 2008-04-30 | 攀钢集团攀枝花钢铁研究院 | Heating and forming method for cold bending sectional steel and cold bending sectional steel produced by the same |
| RU2365447C1 (en) * | 2008-04-21 | 2009-08-27 | Открытое акционерное общество "Магнитогорский металлургический комбинат" | Method for manufacturing of bent channel |
| RU2375137C1 (en) * | 2008-09-29 | 2009-12-10 | Открытое акционерное общество "Магнитогорский металлургический комбинат" | Forming method of special bent profile |
| CN203215250U (en) * | 2013-04-07 | 2013-09-25 | 泰安科诺型钢股份有限公司 | Cap type high-strength weather-proof cold bending sectional steel |
| JP2015205289A (en) * | 2014-04-17 | 2015-11-19 | 新日鐵住金株式会社 | Roller forming method |
-
2017
- 2017-04-20 CN CN201710260099.2A patent/CN106944510B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172707A (en) * | 1997-05-07 | 1998-02-11 | 武钢集团汉口轧钢厂 | Method for manufacturing railway open wagon side pillar |
| CN101168224A (en) * | 2007-11-30 | 2008-04-30 | 攀钢集团攀枝花钢铁研究院 | Heating and forming method for cold bending sectional steel and cold bending sectional steel produced by the same |
| RU2365447C1 (en) * | 2008-04-21 | 2009-08-27 | Открытое акционерное общество "Магнитогорский металлургический комбинат" | Method for manufacturing of bent channel |
| RU2375137C1 (en) * | 2008-09-29 | 2009-12-10 | Открытое акционерное общество "Магнитогорский металлургический комбинат" | Forming method of special bent profile |
| CN203215250U (en) * | 2013-04-07 | 2013-09-25 | 泰安科诺型钢股份有限公司 | Cap type high-strength weather-proof cold bending sectional steel |
| JP2015205289A (en) * | 2014-04-17 | 2015-11-19 | 新日鐵住金株式会社 | Roller forming method |
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