CN109530431A - The transition milling method of steel sheet pile stable molding - Google Patents
The transition milling method of steel sheet pile stable molding Download PDFInfo
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- CN109530431A CN109530431A CN201811426703.5A CN201811426703A CN109530431A CN 109530431 A CN109530431 A CN 109530431A CN 201811426703 A CN201811426703 A CN 201811426703A CN 109530431 A CN109530431 A CN 109530431A
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- pass
- rolled piece
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- sheet pile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/14—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel in a non-continuous process, i.e. at least one reversing stand
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
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Abstract
The invention discloses a kind of transition milling methods of steel sheet pile stable molding, belong to steelmaking technical field.It occurs after smelting, refining, continuous casting process, and obtained pre- rolled piece sequentially passes through roughing mill, the roll and finishing mill for going to upper and lower arrangement between roughing mill and finishing mill, obtains final pass rolled piece；And "Ji" type is presented in the pass D-1 and pass A-1 remained connected on roll configured with one end, pass A-1 and pass D-1, pass D-1 is symmetrical along axis DD, and pass A-1 is symmetrical along axis AA；Rolled piece after roughing mill rolls enters in the pass D-1 of roll undergo 2 passes after again in pass A-1 by 1 passes, the joint area for obtaining the arm front end of rolled piece is big to avoid extreme trace time bending angle by pre-bending in advance, piling of steel caused by biting difficulty or stinging partially is prevented simultaneously, breaks the problems such as roller, is laid a good foundation to improve product quality.
Description
Technical field
The present invention relates to the rollings of steel sheet pile, belong to steelmaking technical field, more particularly to a kind of steel sheet pile stable molding
Transition milling method.
Background technique
Important meals material of the steel sheet pile as a kind of modern basis and underground engineering field, has extensive purposes,
Such as in permanent structure building, it can be used for harbour, unloading apron, levee revetment, revetment, shelves cob wall, breakwater, trraning pole, ship
Depressed place, gate etc.；On temporary structure object, it can be used for sealing a mountain pass, temporarily expansion bank, cutout, bridge construction cofferdam, large-scale pipeline laying are faced
When irrigation canals and ditches earth-retaining, water blocking, the sand stop wall etc. excavated；In flood-fighting, it can be used for controlling flood, anti-collapse, collapse, anti-drift sand
Deng.
According to the difference of processing technology, steel sheet pile can be divided into hot-rolled steel sheet pile and cold bending thin wall steel sheet pile.Cold bending thin wall steel
Sheet pile uses relatively thin plate, and with the continuous rolling forming of cold roll forming unit, production cost is low, scale control is flexible, can root
According to engineering practice, the optimization in engineering design is realized, but can only produce thickness in 12mm Thin-Wall Steel Sheet below, and
The problems such as it is single that there are steel plate thickness, and section thickness is unreasonable, fore shaft imprecision, reuse rate is not high.Hot-rolled steel sheet pile mesh
Preceding to use more universal product, raw material uses hot continuous rolling process using continuous casting billet and technique, and hot-rolled steel section sheet pile is traditionally by big
Type girder and rail mill unit rolls in the pyroplastic deformability area of steel, rolling ensure that product cross section rationally, it is size specification, comprehensive
Performance brilliance, high production efficiency are closed, technological design difficult point is that shape is more special, required precision is high, forming lock rambunctious
The transformation of ownership technology of mouth, traditional shape steel rolled stock rolling mechanism is difficult to instruct fore shaft technological design, according to the difference of technological equipment, steel plate
Stake rolling mill practice has the types such as tradition rolling and the rolling of omnipotent unit.
Domestic common omnipotent unit is as shown in Fig. 1 and Fig. 2 of Figure of description, wherein the edging mill in Fig. 1 is rolling
It when steel sheet pile, is limited by rolling load and rolling procedure, usual edging mill is not involved in rolling, but needs roughing milling train and finish rolling
Milling train back and forth rolls back and forth, therefore, edging mill is substituted for transition cabinet shown in Fig. 2, rolled piece passed through after going out roughing milling train
Cabinet is crossed, into finish rolling milling train；However, rolled piece from roughing milling train to finish rolling milling train run during, due to transition cabinet
Control action is not played, rolled piece is caused to be easy to appear sideslip, cause to bite difficulty or is stung partially, causes piling of steel, break the problems such as roller.
Meanwhile rolled piece, in finish rolling milling train forming process, the lock of steel sheet pile rolled into vertical one leg before this, in extreme trace
The vertical leg is rolled into reversed 45 ° of formation with roll and latched by secondary, and lock metal bending is be easy to cause in final pass rolling
Angle is excessive, and the occlusive state between the lock and design of section of rolling mill of steel sheet pile as shown in figure 3, bite it is a little extremely unstable, easily
It causes final pass lock to form unstable situation, and then product quality is caused to reduce.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of transition milling methods of steel sheet pile stable molding.The mistake
It crosses milling method and on the one hand guarantees that rolled piece is smoothly carried out during the rolling process, plays the role of correction, on the other hand rolls to supplied materials
Part carries out pre-bending certain angle in advance, so that final pass, which greatly improved, latches molding stability.
To achieve the above object, the invention discloses a kind of transition milling methods of steel sheet pile stable molding, it occurs
Smelt, refining, after continuous casting process, the pre- rolled piece of gained sequentially pass through roughing mill, presenting between roughing mill and finishing mill,
The roll and finishing mill of lower arrangement, obtain final pass rolled piece；And pass D-1 and hole that one end remains connected to are configured on roll
"Ji" type is presented in type A-1, the pass A-1 and pass D-1, and the pass D-1 is symmetrical along axis DD, the pass
A-1 is symmetrical along axis AA；
Rolled piece after roughing mill rolls enters in the pass D-1 of roll undergo 2 passes after and passed through in pass A-1
Cross 1 passes, gained rolled piece it is big to avoid extreme trace time bending angle by pre-bending in advance for latching connecting portion.
Further, before finished product the joint area of the arm front end of a time rolled piece by pre-bending 30% in advance.Particularly
The joint area of the arm front end of a time rolled piece before finished product is bent to the 30% of final pass rolled piece in advance.
Further, a time rolled piece completes last passes in the pass A of finishing mill before the finished product, is rolled with realizing
The predetermined angular of the joint area of part arm front end is bent.
Further, the section of the final pass rolled piece by web portion, positioned at the flange part of web portion two sides, from flange
Arm portion bending and extended along rolled piece width direction, and the connector portions composition set on arm front end.
Further, the angle α between the arm and connector portions is 120 °.
Further, angle β is 60 ° between the web portion and flange part.
Preferably, the roll pass configured in roughing mill includes box hole, further includes irregularly-shaped hole, and first rolled piece is in roughing mill
2 passes are undergone, supplied materials is rolled into intermediate maturity shape.
Preferably, the roll pass configured in finishing mill includes extreme trace time rolling groove A type hole.
The beneficial effects are mainly reflected as follows following aspects:
1, in the position of existing edging mill, edging mill, which is substituted for, can play correction makees the transition milling method that the present invention designs
Roll, piling of steel caused by preventing rolled piece from biting difficulty or stinging partially break the problems such as roller；
2, the transition milling method that the present invention designs configures pass D-1 and pass A-1 on newly-increased roll, to roll to supplied materials
Part carries out pre-bending certain angle in advance, avoids the connector portions of the excessive bring rolled piece arm front end of the bending angle of last passes
Position unstable quality, so that the molding stability of final pass rolled piece greatly improved.
Detailed description of the invention
Fig. 1 is the positional diagram of existing omnipotent unit；
Fig. 2 is the positional diagram of existing omnipotent unit；
Fig. 3 is the positional diagram of present invention rolling unit；
Fig. 4 is the pass structure schematic diagram for increasing roll in Fig. 3 newly；
Fig. 5 is the structural schematic diagram of Fig. 4 mesothyrid D-1；
Fig. 6 is the structural schematic diagram of Fig. 4 mesothyrid A-1；
Fig. 7 is the structural schematic diagram of finishing mill mesothyrid A；
Fig. 8 is the section structure diagram of final pass rolled piece of the present invention；
Fig. 9 is that final pass rolled piece bites status diagram in finishing mill in Fig. 8；
Figure 10 is that the final pass rolled piece before improving bites status diagram in finishing mill；
Figure 11 is the partial enlargement diagram of Figure 10；
Wherein, figure label is as follows:
Final pass rolled piece 1 (wherein: web portion 1.1, flange part 1.2, arm 1.3, connector portions 1.4), finishing mill 2.
Specific embodiment
In order to better explain the present invention, below in conjunction with the specific embodiment main contents that the present invention is furture elucidated, but
The contents of the present invention are not limited solely to following embodiment.
The invention discloses a kind of transition milling methods of steel sheet pile stable molding, it occurs in smelting, refining, continuous casting work
After skill, rolled piece at the beginning of the box hole that obtained slab passes through in roughing mill as shown in Figure 3 is formed after cogging is handled, at the beginning of gained
Gradually close to the section configuration of final pass rolled piece, the first rolled piece of gained again passes through other in roughing mill the section configuration of rolled piece
Section groove simultaneously rolls twice, wherein after other section groove rolling process of roughing mill, each position in the cross section of rolled piece
Dimensional thickness basically reaches finished size requirement, preliminarily forming.
Then, gained rolled piece is undergone to the roll for going to upper and lower arrangement and the finish rolling between roughing mill and finishing mill again
The further rolling of machine, obtains final pass rolled piece.
As shown in figure 4, the pass D-1 and pass A-1 that are remained connected between upper and lower two roll configured with one end, the hole
"Ji" type is presented in the profile of type A-1 and pass D-1, passes through in the pass D-1 that the rolled piece after roughing mill rolls enters roll
Reciprocal 2 passes are gone through, rear to pass through 1 passes in pass A-1 again, the joint area of the arm front end of gained rolled piece is mentioned
Preceding pre-bending is big to avoid extreme trace time bending angle, it is preferred that the joint area of the arm front end of a time rolled piece before finished product is pre-
Be bent to the 30% of final pass rolled piece, finally, complete last passes in the pass A of finishing mill, obtained it is shown in Fig. 8 at
Product passage rolled piece 1, in conjunction with Fig. 8 it is found that the final pass rolled piece 1 is by web portion 1.1, the flange part positioned at 1.1 two sides of web portion
1.2, from the arm 1.3 flange part 1.2 bending and extended along rolled piece width direction, and the connector portions 1.4 set on 1.3 front end of arm
Composition, the angle α between the preferred arm 1.3 of the present invention and connector portions 1.4 are 120 °, are pressed from both sides between web portion 1.1 and flange part 1.2
Angle beta is 60 °, the final pass rolled piece stable molding, and is latched closely between connector portions, can realize the fixation of steel sheet pile well
And external force resistance function.
In conjunction with Fig. 5 it is found that the pass D-1 is symmetrical along axis DD, in conjunction with Fig. 6 it is found that the pass A-1 is along axis
AA is symmetrical.
Further Fig. 5, Fig. 6 are combined it is found that rolled piece is during undergoing pass D-1 to pass A-1, due to rolled piece
Rolling position is transformed by curved surface where web portion faces directly, and in the practical operation of rolling, the flange part of rolled piece is also by roll active force
And the arm of rolled piece is driven to deform, make its shape closer to final pass rolled piece.
Further Fig. 6 and Fig. 7 is combined it is found that the curvature of the curved surface at rolling position is gradually increasing where the connector portions of rolled piece
Greatly, this bends the connector portions of rolled piece further and is allowed to close to final pass rolled piece.
By the way of above-mentioned gradually transition rolling, it is avoided that the connector portions of rolled piece cause finished product because bending angle is excessive
The connector portions molding of passage rolled piece is extremely unstable, and then the problem of the product quality of influence rolled piece.
In conjunction with Figure 10 and Figure 11 it is found that using existing milling method, the connector portions of obtained rolled piece and the hole of finishing mill 2
Contact surface between type A is smaller, is found by force analysis, when roll rolls final pass rolled piece, will cause
Rolled piece does not ensure that the connector portions quality stability of rolled piece in different directions, different degrees of deformation.
And Fig. 9 is combined it is found that the rolled piece obtained using transition milling method of the present invention, the hole of connector portions and finishing mill 2
Contact area between type A relatively increases 20~25%, further makes to bite a stabilization, improves final pass indirectly and connect
The molding stability in head.
Therefore, by the design of above-mentioned transition milling method, both prevent piling of steel caused by biting difficulty or stinging partially, break roller etc.
Problem further improves the molding stability of final pass connector portions, lays a good foundation to improve product quality.
Above embodiments are only best citing, rather than a limitation of the embodiments of the present invention.Except above-described embodiment
Outside, there are also other embodiments by the present invention.All technical solutions formed using equivalent substitution or equivalent transformation, all fall within the present invention
It is required that protection scope.
Claims (6)
1. a kind of transition milling method of steel sheet pile stable molding, the feature after smelting, refining, continuous casting process occurs in it
Be: the pre- rolled piece of gained sequentially passes through roughing mill, the roll for going to upper and lower arrangement between roughing mill and finishing mill and finish rolling
Machine obtains final pass rolled piece；And the pass D-1 and pass A-1, the pass A-1 remained connected on roll configured with one end
"Ji" type is presented with pass D-1, the pass D-1 is symmetrical along axis DD, and the pass A-1 symmetrically divides along axis AA
Cloth；
Rolled piece after roughing mill rolls enters in the pass D-1 of roll undergo 2 passes after again in pass A-1 by 1
Passes, the joint area of the arm front end of a time rolled piece is by pre-bending in advance to avoid extreme trace time bending angle before gained finished product
Degree is big.
2. the transition milling method of steel sheet pile stable molding according to claim 1, it is characterised in that: before the finished product together
The joint area of the arm front end of secondary rolled piece is by pre-bending 30% in advance.
3. the transition milling method of steel sheet pile stable molding according to claim 1 or claim 2, it is characterised in that: before the finished product
A time rolled piece completes last passes in the pass A of finishing mill.
4. the transition milling method of steel sheet pile stable molding according to claim 1, it is characterised in that: the final pass rolls
The section of part by web portion (1.1), positioned at web portion two sides flange part (1.2), from flange part (1.2) be bent and along rolled piece it is wide
The arm (1.3) that direction extends is spent, and is set to connector portions (1.4) composition of arm (1.3) front end.
5. the transition milling method of steel sheet pile stable molding according to claim 4, it is characterised in that: the arm (1.3)
Angle between connector portions (1.4) is 60 °.
6. the transition milling method of steel sheet pile stable molding according to claim 4 or 5, it is characterised in that: the web portion
(1.1) angle is 120 ° between flange part (1.2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811426703.5A CN109530431A (en) | 2018-11-27 | 2018-11-27 | The transition milling method of steel sheet pile stable molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811426703.5A CN109530431A (en) | 2018-11-27 | 2018-11-27 | The transition milling method of steel sheet pile stable molding |
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| Publication Number | Publication Date |
|---|---|
| CN109530431A true CN109530431A (en) | 2019-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811426703.5A Pending CN109530431A (en) | 2018-11-27 | 2018-11-27 | The transition milling method of steel sheet pile stable molding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113441547A (en) * | 2021-07-02 | 2021-09-28 | 太原理工大学 | Method for improving corrugated continuous rolling of magnesium/aluminum composite plate by head pre-bending |
| CN114929405A (en) * | 2020-01-10 | 2022-08-19 | 杰富意钢铁株式会社 | Method for manufacturing steel sheet pile and rolling equipment set for manufacturing steel sheet pile |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172517A (en) * | 1995-09-29 | 1998-02-04 | 住友金属工业株式会社 | Unsymmetrical steel sheet pile and method for manufacturing the same |
| JPH10192905A (en) * | 1996-12-27 | 1998-07-28 | Kawasaki Steel Corp | Manufacture of u-shape steel sheet pile |
| CN202037174U (en) * | 2011-04-20 | 2011-11-16 | 上海格林赛高新材料有限公司 | Rolling mill for special-shaped section strip |
| CN103180516A (en) * | 2010-10-28 | 2013-06-26 | 杰富意钢铁株式会社 | Steel sheet pile and steel sheet pile wall formed by the steel sheet pile |
-
2018
- 2018-11-27 CN CN201811426703.5A patent/CN109530431A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1172517A (en) * | 1995-09-29 | 1998-02-04 | 住友金属工业株式会社 | Unsymmetrical steel sheet pile and method for manufacturing the same |
| JPH10192905A (en) * | 1996-12-27 | 1998-07-28 | Kawasaki Steel Corp | Manufacture of u-shape steel sheet pile |
| CN103180516A (en) * | 2010-10-28 | 2013-06-26 | 杰富意钢铁株式会社 | Steel sheet pile and steel sheet pile wall formed by the steel sheet pile |
| CN202037174U (en) * | 2011-04-20 | 2011-11-16 | 上海格林赛高新材料有限公司 | Rolling mill for special-shaped section strip |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114929405A (en) * | 2020-01-10 | 2022-08-19 | 杰富意钢铁株式会社 | Method for manufacturing steel sheet pile and rolling equipment set for manufacturing steel sheet pile |
| CN113441547A (en) * | 2021-07-02 | 2021-09-28 | 太原理工大学 | Method for improving corrugated continuous rolling of magnesium/aluminum composite plate by head pre-bending |
| CN113441547B (en) * | 2021-07-02 | 2022-08-16 | 太原理工大学 | Method for improving corrugated continuous rolling of magnesium/aluminum composite plate by head pre-bending |
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Application publication date: 20190329 |