CN107597841A - The method of complete universal four-roller last groove roll out steel rail - Google Patents
The method of complete universal four-roller last groove roll out steel rail Download PDFInfo
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- CN107597841A CN107597841A CN201710629798.XA CN201710629798A CN107597841A CN 107597841 A CN107597841 A CN 107597841A CN 201710629798 A CN201710629798 A CN 201710629798A CN 107597841 A CN107597841 A CN 107597841A
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Abstract
The invention discloses a kind of method of complete universal four-roller last groove roll out steel rail, it comprises the following steps：The cogging after some passage cogging roughing of rectangle steel billet；Some passages are back and forth rolled through omnipotent breakdown pass and thick edging pass；Through finish rolling side type precise control of sizes；Through omnipotent last groove rail head corner circular arc is located at by adjusting gap preset size, omnipotent last groove rail head roller gap.Due to increasing the direct decrement of last pass short transverse, rail product front end and the high change in size of tail end rail reduce, and rail surface is limited by instrument, and shape and surface smoothness are guaranteed, and last pass bending control can be adjusted by height to drafts.
Description
Technical field
The present invention relates to steel rail rolling technical field, more particularly to a kind of complete universal four-roller last groove roll out steel rail
Method.
Background technology
At present, last groove uses the omnipotent pattern of three rollers, and rectangle steel billet forms omnipotent after some passage cogging roughing
Roll blank section, roll a few passage control section shape and size in omnipotent roughing, thick edging pass, then through finish rolling side,
Omnipotent last groove rolls out finished product rail.Rail front end and the high change in size of tail end rail are big, rail surface Original-filling, shape
It is difficult to ensure that with surface smoothness, last pass bending control device deficiency.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of method of complete universal four-roller last groove roll out steel rail.
The present invention provides a kind of method of complete universal four-roller last groove roll out steel rail, and it comprises the following steps：
The cogging after some passage cogging roughing of rectangle steel billet, form the universal rolling blank section of following size：Rail
Crown width dimensions are T5, and rail head width dimensions are D5, and rail head height dimension is B5, and rail head side height dimension is A5；
Some passages are back and forth rolled through omnipotent breakdown pass and thick edging pass：Reduce rail head height through omnipotent breakdown pass
For size to B4, stable rail crown width dimensions are T4, and rail head width dimensions are D4；Through thick edging pass control rail head top broad-ruler
Very little is T3, and rail head width dimensions are D3, and rail head height dimension is B3, and rail head side height dimension is A3；The omnipotent breakdown pass
Using four-roller universal rolling；
It is T2 accurately to control rail head top width dimensions through finish rolling side type, and rail head width dimensions are D2, and rail head corner circular arc is partly
Footpath size is R4, and flange of rail width dimensions are G2；
By adjusting roll gap s1 to control rail height dimension it is H1 through omnipotent last groove, rail head top width dimensions are T1, rail
Head width size is D1, rail head corner arc radius size R3, finally rolls out finished product rail；The omnipotent last groove uses
Four-roller universal rolling, and omnipotent last groove rail head roller gap is located at rail head corner circular arc；
Size meets that following relation R4=R3+dr, dr are variable quantity in above-mentioned pass；B2>B1, A2>A1, D2>D1, T2>
T1；B3>B2, A3>A2, D3>D2；A5>A3, B5>B3, D5>D3, T4>T3, D5>D4, T5 >=T4.
Last groove of the present invention uses the omnipotent pattern of four-roller, by rationally setting Roll-gap position, that is, can guarantee that rail is basic
Size ensures that surface quality, does not influence the normal use of rail, and the characteristics of meeting rolling mill practice ensures that user normally makes
With maintenance.Rectangle steel billet forms universal rolling blank section after some passage cogging roughing, in omnipotent breakdown pass, roughing
Lateral opening type back and forth rolls a few passage control section shape and size, then through leader pass is smart edging pass, omnipotent last groove
Roll out finished product rail.Due to increasing the direct decrement of last pass short transverse, rail product front end and the high chi of tail end rail
Very little change reduces, and rail surface is limited by instrument, and shape and surface smoothness are guaranteed, and last pass bending control can lead to
It is too high to be adjusted to drafts.
Brief description of the drawings
Fig. 1 is universal rolling blank section in the method for complete universal four-roller last groove roll out steel rail provided by the invention
Schematic diagram；
Fig. 2 is omnipotent breakdown pass signal in the method for complete universal four-roller last groove roll out steel rail provided by the invention
Figure；
Fig. 3 is thick edging pass schematic diagram in the method for complete universal four-roller last groove roll out steel rail provided by the invention；
Fig. 4 is finish rolling side type schematic diagram in the method for complete universal four-roller last groove roll out steel rail provided by the invention；
Fig. 5 is omnipotent last groove signal in the method for complete universal four-roller last groove roll out steel rail provided by the invention
Figure.
Description of reference numerals：
2-1：Omnipotent last groove
2-2：Finish rolling side type
2-3：Thick edging pass
2-4：Omnipotent breakdown pass
2-5：Universal rolling blank section
Embodiment
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Fig. 1 to Fig. 5 is refer to, the present invention provides a kind of method of complete universal four-roller last groove roll out steel rail, and it includes
Following steps：
The cogging after some passage cogging roughing of rectangle steel billet, form the universal rolling blank section 2-5 of following size：
Rail head top width dimensions are T5, and rail head width dimensions are D5, and rail head height dimension is B5, and rail head side height dimension is A5；
Some passages are back and forth rolled through omnipotent breakdown pass 2-4 and thick edging pass 2-3：Subtract through omnipotent breakdown pass 2-4
For small rail head height dimension to B4, stable rail crown width dimensions are T4, and rail head width dimensions are D4；Controlled through thick edging pass 2-3
Rail head top processed width dimensions are T3, and rail head width dimensions are D3, and rail head height dimension is B3, and rail head side height dimension is A3；Institute
State omnipotent breakdown pass and use four-roller universal rolling；
It is T2 accurately to control rail head top width dimensions through finish rolling side type 2-2, and rail head width dimensions are D2, rail head corner circular arc
Radius size is R4, and flange of rail width dimensions are G2；
By adjusting roll gap s1 to control rail height dimension it is H1 through omnipotent last groove 2-1, rail head top width dimensions are T1,
Rail head width dimensions are D1, rail head corner arc radius size R3, finally roll out finished product rail；The omnipotent last groove is adopted
With four-roller universal rolling, and omnipotent last groove rail head roller gap is located at rail head corner circular arc；
Size meets that following relation R4=R3+dr, dr are variable quantity in above-mentioned pass；B2>B1, A2>A1, D2>D1, T2>
T1；B3>B2, A3>A2, D3>D2；A5>A3, B5>B3, D5>D3, T4>T3, D5>D4, T5 >=T4.
In above-mentioned technique：
Universal rolling blank section 2-5, for forming the basic blank for ensureing to be molded each passage homogeneous deformation, ensure processing
Amount.
Omnipotent breakdown pass 2-4, for reducing section each several part size, ensure the stabilization of basic critical size, obtain steady
Shape shape.
Thick edging pass 2-3, for controlling flange of rail width dimensions G3, rail head width dimensions D3, rail top width dimensions T3, is obtained
Obtain regular shape.
Smart edging pass 2-2, for obtaining the flange of rail width dimensions G2 needed before finished product, rail head width dimensions D2, rail head
Width dimensions T2, rail head corner arc radius size R4 are pushed up, ensures the enough allowance of finished hole.
Omnipotent last groove 2-1, for accurately controlling each portion's size, the shapes such as height, width, ensure rail head corner circular arc
Radius size R3, obtain final qualified rail finished product.
Omnipotent last groove rail head roller gap, which is located at the advantages of rail head corner circular arc, in the present invention is：In rolling both
Rail head width dimensions D1 and rail head lateral plane degree can accurately be controlled, make rail surface middle part and both sides arc profile all
Under direct control in roll, ensure that dimensionally stable is reliable.
In the present invention, last groove uses the omnipotent pattern of four-roller, by rationally setting Roll-gap position, that is, can guarantee that rail base
This size ensures that surface quality, does not influence the normal use of rail, and the characteristics of meeting rolling mill practice ensures that user is normal
Working service.The cogging after some passage cogging roughing of rectangle steel billet forms universal rolling blank section 2-5, obtains enough
Size rail head top width dimensions T5, rail head width dimensions D5, rail head height dimension B5, rail head side height dimension A5, omnipotent thick
Roll pass 2-4 and reduce rail head height dimension to B4, stable rail crown width dimensions T4, rail head width dimensions D4；Thick edging pass
2-3 control rail heads top width dimensions T3, rail head width dimensions D3, rail head height dimension B3, rail head side height dimension A3.
In omnipotent breakdown pass 2-4 and thick edging pass 2-3 back and forth roll several passages constantly reduce section obtain it is suitable
Shape and size, finally accurately control rail head top width dimensions T2, rail head width dimensions D2, rail head angle through finish rolling side type 2-2 again
After portion arc radius size R4, the flange of rail width dimensions G2 sizes rail height gauge is controlled in omnipotent last groove 2-1 by adjusting s1
Very little H1, rail head top width dimensions T1, rail head width dimensions D1, rail head corner arc radius size R3 roll out finished product rail.Respectively
Size relationship will ensure to meet in hole：R4=R3+dr dr are variable quantity, B2>B1, A2>A1, D2>D1, T2>T1；B3>B2, A3>
A2, D3>D2；A5>A3, B5>B3, D5>D3, T4>T3, D5>D4, T5 >=T4.
Due to increasing the direct decrement of last pass short transverse, rail product front end and the high change in size of tail end rail subtract
Small, rail surface is limited by instrument, and shape and surface smoothness are guaranteed, and last pass bending control can be by height to pressure
Lower amount is adjusted.
The method of complete universal four-roller last groove roll out steel rail provided by the present invention is described in detail above.This
Apply specific case in text to be set forth the principle and embodiment of the present invention, the explanation of above example is only intended to
Help to understand method and its core concept of the invention.It should be pointed out that for those skilled in the art,
Without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls
Enter in the protection domain of the claims in the present invention.
Claims (1)
- A kind of 1. method of complete universal four-roller last groove roll out steel rail, it is characterised in that comprise the following steps：The cogging after some passage cogging roughing of rectangle steel billet, form the universal rolling blank section of following size：Rail head top Width dimensions are T5, and rail head width dimensions are D5, and rail head height dimension is B5, and rail head side height dimension is A5；Some passages are back and forth rolled through omnipotent breakdown pass and thick edging pass：Reduce rail head height dimension through omnipotent breakdown pass To B4, stable rail crown width dimensions are T4, and rail head width dimensions are D4；The rail head top width dimensions are controlled to be through thick edging pass T3, rail head width dimensions are D3, and rail head height dimension is B3, and rail head side height dimension is A3；The omnipotent breakdown pass uses Four-roller universal rolling；It is T2 accurately to control rail head top width dimensions through finish rolling side type, and rail head width dimensions are D2, rail head corner arc radius chi Very little is R4, and flange of rail width dimensions are G2；By adjusting roll gap s1 to control rail height dimension it is H1 through omnipotent last groove, rail head top width dimensions are T1, and rail head is wide Degree size is D1, rail head corner arc radius size R3, finally rolls out finished product rail；The omnipotent last groove uses four-roller Universal rolling, and omnipotent last groove rail head roller gap is located at rail head corner circular arc；Size meets that following relation R4=R3+dr, dr are variable quantity in above-mentioned pass；B2>B1, A2>A1, D2>D1, T2>T1；B3 >B2, A3>A2, D3>D2；A5>A3, B5>B3, D5>D3, T4>T3, D5>D4, T5 >=T4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710629798.XA CN107597841B (en) | 2017-07-28 | 2017-07-28 | Method for rolling steel rail by using all-universal four-roller finished hole pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710629798.XA CN107597841B (en) | 2017-07-28 | 2017-07-28 | Method for rolling steel rail by using all-universal four-roller finished hole pattern |
Publications (2)
| Publication Number | Publication Date |
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| CN107597841A true CN107597841A (en) | 2018-01-19 |
| CN107597841B CN107597841B (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710629798.XA Active CN107597841B (en) | 2017-07-28 | 2017-07-28 | Method for rolling steel rail by using all-universal four-roller finished hole pattern |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109078988A (en) * | 2018-08-02 | 2018-12-25 | 攀钢集团攀枝花钢钒有限公司 | The method for controlling rail head bottom lengthening coefficient |
| CN112264462A (en) * | 2020-10-13 | 2021-01-26 | 邯郸钢铁集团有限责任公司 | All-purpose production process for steel rail tread composite forming |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2504112A2 (en) * | 2009-11-26 | 2012-10-03 | Tata Steel UK Limited | A method of rolling rails, apparatus for rolling rails and rail produced according to said method |
| CN203304284U (en) * | 2013-02-28 | 2013-11-27 | 攀钢集团攀枝花钢钒有限公司 | Rolling mill hole pattern |
| CN103599925A (en) * | 2013-12-09 | 2014-02-26 | 攀钢集团攀枝花钢钒有限公司 | Steel rail rolling method |
| US20150217348A1 (en) * | 2011-09-28 | 2015-08-06 | W. Silver Inc. | No-slit hot rolling of railroad rails |
| CN105983576A (en) * | 2015-02-13 | 2016-10-05 | 鞍钢股份有限公司 | Steel rail universal finish rolling finishing pass and steel rail universal finish rolling finishing pass rolling technology |
-
2017
- 2017-07-28 CN CN201710629798.XA patent/CN107597841B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2504112A2 (en) * | 2009-11-26 | 2012-10-03 | Tata Steel UK Limited | A method of rolling rails, apparatus for rolling rails and rail produced according to said method |
| US20150217348A1 (en) * | 2011-09-28 | 2015-08-06 | W. Silver Inc. | No-slit hot rolling of railroad rails |
| CN203304284U (en) * | 2013-02-28 | 2013-11-27 | 攀钢集团攀枝花钢钒有限公司 | Rolling mill hole pattern |
| CN103599925A (en) * | 2013-12-09 | 2014-02-26 | 攀钢集团攀枝花钢钒有限公司 | Steel rail rolling method |
| CN105983576A (en) * | 2015-02-13 | 2016-10-05 | 鞍钢股份有限公司 | Steel rail universal finish rolling finishing pass and steel rail universal finish rolling finishing pass rolling technology |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109078988A (en) * | 2018-08-02 | 2018-12-25 | 攀钢集团攀枝花钢钒有限公司 | The method for controlling rail head bottom lengthening coefficient |
| CN112264462A (en) * | 2020-10-13 | 2021-01-26 | 邯郸钢铁集团有限责任公司 | All-purpose production process for steel rail tread composite forming |
| CN112264462B (en) * | 2020-10-13 | 2022-11-15 | 邯郸钢铁集团有限责任公司 | All-purpose production process for steel rail tread composite forming |
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| Publication number | Publication date |
|---|---|
| CN107597841B (en) | 2020-02-07 |
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