CN109746265A - A kind of flat-bulb steel rolling groove design method - Google Patents
A kind of flat-bulb steel rolling groove design method Download PDFInfo
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- CN109746265A CN109746265A CN201910095878.0A CN201910095878A CN109746265A CN 109746265 A CN109746265 A CN 109746265A CN 201910095878 A CN201910095878 A CN 201910095878A CN 109746265 A CN109746265 A CN 109746265A
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- hole
- slot type
- horizontal segment
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- pass
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Abstract
The present invention relates to a kind of flat-bulb steel rolling groove design methods, pass is used to roll multiple rolling mills of flat-bulb steel, two to three box pre- cutting holes are arranged in sequence, one to two slot type cutting hole, four slot type finish rolling holes, one slot type pre-formed hole and a finished hole, slot type cutting hole, slot type finish rolling hole and slot type pre-formed hole pass have horizontal segment and intersect the leg having angle with horizontal segment, horizontal segment further includes head, leg and head are located at horizontal segment main body both ends and are biased to the same side, the material that leg accommodates in pass is a part of finished product flat-bulb steel web.Cutting hole, finish rolling hole and the pre-formed hole of slot type can to roll more stable.
Description
Technical field
The present invention relates to a kind of rolling groove design methods, more particularly to a kind of flat-bulb steel rolling groove design method.
Background technique
Flat-bulb steel is ship, ocean engineering, structural steel shape important in bridge construction, plays the work of the reinforcement to hardened structure
With.The structure of flat-bulb steel is made of web and bulb, is typical section fashioned iron, has section asymmetry, uneven change
The serious feature of shape has biggish rolling difficulty.
The Chinese patent as disclosed in " CN 201108916Y ", " 108787742 A of CN ", three parts of " 107570547 A of CN "
Document has attempted different milling methods.
The present invention is intended to provide a kind of section design method for being able to maintain good rolling stability.
Summary of the invention
The invention aims to provide a kind of flat-bulb steel rolling groove design method, it is able to maintain good rolling and stablizes
Property.
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
The present invention provides a kind of flat-bulb steel rolling groove design method, pass is used to roll multiple rolling mills of flat-bulb steel
On, two to three box pre- cutting holes of sequence setting, one to two slot type cutting hole, four slot type finish rolling holes, a slot type are pre-
Molding hole and a finished hole, slot type cutting hole, slot type finish rolling hole and slot type pre-formed hole pass have horizontal segment and with
Horizontal segment intersects the leg that has angle, and horizontal segment further includes head, leg and head be located at horizontal segment main body both ends and
It is biased to the same side, the material of leg accommodating is a part of finished product flat-bulb steel web in pass.
Optimally, the horizontal section length of slot type cutting hole, slot type finish rolling hole and slot type pre-formed hole pass is of substantially equal.
Optimally, slot type cutting hole, the leg in slot type finish rolling hole and slot type pre-formed hole pass and horizontal segment angle are pressed
Rolling sequence be gradually reduced.
Optimally, sequence setting three box pre- cutting holes, a slot type cutting hole, four slot type finish rolling holes, a slot
Formula pre-formed hole and a finished hole.
Due to the above technical solutions, the present invention has the following advantages over the prior art:
Flat-bulb steel rolling groove design method of the invention, due to sequence be arranged two to three box pre- cutting holes, one to
Two slot type cutting holes, four slot type finish rolling holes, a slot type pre-formed hole and a finished hole, can sequentially complete good
Rolling operation.Wherein slot type cutting hole, slot type finish rolling hole and slot type pre-formed hole pass have horizontal segment and with horizontal segment phase
The leg having angle is handed over, horizontal segment further includes head, and leg is located at horizontal segment main body both ends with head and is biased to same
Side, so that pass forms approximate groove type, i.e. horizontal segment main body is trench bottom, and head and leg are the two sides of slot.This
The achievable advantage of sample:
A. pass bilateral symmetry is realized to the maximum extent, and rolled piece or so sideslip is few, and the operation of rolling is stablized；
B. channel pass has the function of strong induced spread, be able to use lesser blank roll wider flat-bulb steel at
Product, and can guarantee compression ratio；
C. the horizontal segment in channel pass is conducive to the installation of guide and guards.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the preferred embodiment of the pass figure of flat-bulb steel rolling groove design method of the present invention；
Fig. 2 is K4 and K5 pass scale diagrams in Fig. 1；
Fig. 3 is K4 pass structure schematic diagram in Fig. 1；
Wherein, the reference numerals are as follows:
1, box pre- cutting hole；
2, slot type cutting hole；
3, slot type finish rolling hole；
4, slot type pre-formed hole；
5, finished hole；
60, horizontal segment；61, head；62, horizontal segment main body；
70, leg.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
As shown in Figure 1, the technical solution of the section design method of the present embodiment be it is such, wherein one in every kind of pass
A passage corresponds to a specific rolling mill, that is, the rolling groove on this rolling mill is such as G- Design:
Box pre- cutting hole 1: three；
Slot type cutting hole 2: one；
3: four, slot type finish rolling hole；
Slot type pre-formed hole 4: one；
Finished hole 5: one.
Box pre- cutting hole 1 includes three passage K10~K8, and slot type cutting hole 2 includes passage K7, and slot type finish rolling hole 3 is wrapped
Containing four passage K6~K3, slot type pre-formed hole 4 includes passage K2, and finished hole 5 includes passage K1.
Rectangle steel billet successively passes through the rolling of K10 passage shown in FIG. 1 to K1 passage, goes out finished product 260 from K1 passes
× 10 flat-bulb steels.
Such as Fig. 1, the pass of flat-bulb steel, wherein K10~K8 is box pass, and K7~K2 is channel pass.Other technical sides
In case, the quantity alternative of box pre- cutting hole 1 is arranged 2~3, slot type cutting hole 2 settable 1~2.
Box pass, that is, pass of K10~K8 is similar to boxed-section shape, lid of the upper roller verge of opening similar to chest, lower roll aperture
Bottom of the edge similar to chest.
K7~K2 channel pass appearance is similar to groove-like.To the structure of channel pass for the K4 passage pass shown in Fig. 3
It is illustrated.
Such as Fig. 3, K4 passage is a passage in slot type finish rolling molding hole 3.The pass of K4 passage includes horizontal segment 60 and leg
Portion 70.Wherein horizontal segment 60 is about in a horizontal state, and leg 70 is intersected angled with horizontal segment 60.60 left end of horizontal segment is hole
Type left end, 60 right end of horizontal segment are to extend right up to turn position, turn position namely connection with horizontal segment pass center line
70 position of leg.Horizontal segment 60 includes horizontal segment main body 62 and the head 61 that left end is arranged in, and above-mentioned leg 70 is arranged in level
Section 62 right end of main body.Namely leg 70 and head 61 are located at 62 both ends of horizontal segment main body.Leg 70 and head 61 are downwards
Bending, so the same side is biased to make pass form groove shapes namely channel pass in leg 70 and head 61.
The advantages of channel pass, is:
A. pass bilateral symmetry is realized to the maximum extent, and rolled piece or so sideslip is few, and the operation of rolling is stablized.Head and leg are inclined
To the same side, the unstability of left and right is balanced, so that the operation of rolling is stablized.
B. channel pass has the function of strong induced spread, be able to use lesser blank roll wider flat-bulb steel at
Product, and can guarantee compression ratio.
C. since the horizontal segment in channel pass is horizontality and horizontal section length is consistent substantially, so being conducive to
The installation of guide and guards.
Cutting hole, finish rolling hole, pre-formed hole are all made of channel pass.
Rectangle steel billet is deformed by 2~3 box pre- cutting holes 1, the spy good using steel temperature, breaking down ability is strong
Point is carried out the splitting rolling of aximal deformation value by 1~2 slot type cutting hole 2, then carries out exact scale by 4 slot type finish rolling holes 3
Very little control, and the tilt angle of slot type leg is gradually adjusted, it is rolled by 1 slot type pre-formed hole 4, sizing bulb and web are curved
The width of leg finally moves toward straightening leg 70 in finished hole 5 completely, rolls out qualified finished product.
Such as Fig. 2, the length of K4 passage horizontal segment is L, and leg and horizontal segment angle are α, the K4 passage in rolling sequence
Upper a time is K5 passage.The length of K5 passage horizontal segment is L ', and leg and horizontal segment angle are α '.In addition, the road K4 sub-level
Section body thickness is t, and K5 passage horizontal segment body thickness is t ',
In order to further keep the stability of rolling to guarantee the same length of horizontal segment in pass specifically designs,
Gradually the included angle α of leg and horizontal segment is become smaller, until being straightened in finished hole.That is L ≈ L ', α < α '.
In addition, K4 passage horizontal segment body thickness is t, K5 passage horizontal segment body thickness is t ', drafts Δ d=t '-
T, in rolling sequence, drafts Δ d is gradually reduced.
The specific hole type design parameter of the present embodiment such as table 1:
Table 1
As it can be seen from table 1 the pass horizontal section length L of K7~K2 passage is consistent substantially, leg bend over angle [alpha] by
It is decrescence small.Leg bend over angle [alpha] finally K1 passage be 0 so that leg accommodating material become finished product flat-bulb steel web one
Part.
In the present embodiment, the pass of flat-bulb steel, by three box pre- cutting holes 1,2, four slot types of a slot type cutting hole
3, one, finish rolling hole slot type pre-formed hole 4 and finished hole 5 compositions, it is ten that pass quantity, which has altogether, and pass type point
With reasonable.Wherein passage K7~K2 is channel pass.The flat-bulb steel finished form rolled out is accurate, and size is good, and product is complete
Meet GB/T9945-2012 standard requirements.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention, it is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of flat-bulb steel rolling groove design method, pass is used to roll multiple rolling mills of flat-bulb steel, it is characterised in that:
Sequence setting two to three box pre- cutting holes (1), one to two slot type cutting hole (2), four slot type finish rolling holes (3), one
Slot type pre-formed hole (4) and a finished hole (5), slot type cutting hole (2), slot type finish rolling hole (3) and slot type pre-formed hole
(4) pass has horizontal segment (60) and intersects the leg (70) having angle with horizontal segment (60), and horizontal segment (60) further includes head
Portion (61), leg (70) and head (61) are located at horizontal segment main body both ends and are biased to the same side, and leg (70) holds in pass
The material set is a part of finished product flat-bulb steel web.
2. a kind of flat-bulb steel rolling groove design method according to claim 1, it is characterised in that: slot type cutting hole (2), slot
Horizontal segment (60) length of formula finish rolling hole (3) and slot type pre-formed hole (4) pass is of substantially equal.
3. a kind of flat-bulb steel rolling groove design method according to claim 1, it is characterised in that: slot type cutting hole (2), slot
Formula finish rolling hole (3) and the leg (70) of slot type pre-formed hole (4) pass and horizontal segment (60) angle according to rolling sequence gradually
Reduce.
4. a kind of flat-bulb steel rolling groove design method according to claim 1, it is characterised in that: sequence setting three is box
Pre- cutting hole (1), a slot type cutting hole (2), four slot type finish rolling holes (3), a slot type pre-formed hole (4) and one at
Sample wells (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910095878.0A CN109746265A (en) | 2019-01-31 | 2019-01-31 | A kind of flat-bulb steel rolling groove design method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910095878.0A CN109746265A (en) | 2019-01-31 | 2019-01-31 | A kind of flat-bulb steel rolling groove design method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109746265A true CN109746265A (en) | 2019-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910095878.0A Pending CN109746265A (en) | 2019-01-31 | 2019-01-31 | A kind of flat-bulb steel rolling groove design method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2804845B2 (en) * | 1993-03-26 | 1998-09-30 | イネクサ プロフイル アクチボラグ | Method of manufacturing a scoop bar and a scoop bar manufactured by this method |
| CN101190442A (en) * | 2006-11-30 | 2008-06-04 | 鞍钢股份有限公司 | Bulb steel production technology |
| CN201108917Y (en) * | 2007-10-11 | 2008-09-03 | 重庆钢铁(集团)有限责任公司 | Slotted hole type roller device |
| CN105690045A (en) * | 2016-04-22 | 2016-06-22 | 攀钢集团江油长城特殊钢有限公司 | Method for producing flat bulb steel |
| CN109647879A (en) * | 2018-11-20 | 2019-04-19 | 宿迁南钢金鑫轧钢有限公司 | A kind of rolling device of symmetrical flat-bulb steel and its production technology of symmetrical flat-bulb steel |
-
2019
- 2019-01-31 CN CN201910095878.0A patent/CN109746265A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2804845B2 (en) * | 1993-03-26 | 1998-09-30 | イネクサ プロフイル アクチボラグ | Method of manufacturing a scoop bar and a scoop bar manufactured by this method |
| CN101190442A (en) * | 2006-11-30 | 2008-06-04 | 鞍钢股份有限公司 | Bulb steel production technology |
| CN201108917Y (en) * | 2007-10-11 | 2008-09-03 | 重庆钢铁(集团)有限责任公司 | Slotted hole type roller device |
| CN105690045A (en) * | 2016-04-22 | 2016-06-22 | 攀钢集团江油长城特殊钢有限公司 | Method for producing flat bulb steel |
| CN109647879A (en) * | 2018-11-20 | 2019-04-19 | 宿迁南钢金鑫轧钢有限公司 | A kind of rolling device of symmetrical flat-bulb steel and its production technology of symmetrical flat-bulb steel |
Non-Patent Citations (2)
| Title |
|---|
| 唐剑等: "24#船用球扁钢轧制孔型设计", 《柳钢科技》 * |
| 杨荣万: "20#球扁钢孔型设计与研究", 《重钢技术》 * |
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Application publication date: 20190514 |