CN108916204A - T-steel and its milling method - Google Patents
T-steel and its milling method Download PDFInfo
- Publication number
- CN108916204A CN108916204A CN201810628219.4A CN201810628219A CN108916204A CN 108916204 A CN108916204 A CN 108916204A CN 201810628219 A CN201810628219 A CN 201810628219A CN 108916204 A CN108916204 A CN 108916204A
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- Prior art keywords
- pass
- steel
- knifing
- perpendicular web
- rolled piece
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
-
- 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
- B21B1/088—H- or I-sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a kind of T-steels comprising：T-shaped horizontal wing plate and perpendicular web are connected, the T-steel hot rolling is formed, and the end face of the free end of the perpendicular web is transitioned into the first side of the perpendicular web by tapered plane.Also disclose a kind of milling method of T-steel.The present invention is convenient for subsequent welding processing through the above technical solution, and the cut manufacturing procedure before omitting welding reduces metal loss, is conducive to improve whole work efficiency, saves cost.
Description
Technical field
The invention belongs to hot-rolled steel section technical field, in particular to a kind of T-steel and its milling method.
Background technique
Deformed steel (or odd-shaped cross section fashioned iron) is typically employed in professional domain, as warehouse logistics are mechanical, engineering machinery neck
Domain.Usually with the difference of application field, deformed steel cross sectional shape is not also identical, wherein cross sectional shape is the deformed steel of T-type
(or being T-steel) is mainly used in haulage vehicle and special equipment (such as elevator) industry, is used as structural member or guide rail.
In the prior art, it when carrying out welding processing using T-steel, needs first to carry out in the perpendicular web end of T-steel
Retaining wall on slope so increases metal loss, reduces working efficiency, improves cost.
Summary of the invention
To solve the above-mentioned problems, one aspect of the present invention provides a kind of T-steel comprising：Connect T-shaped horizontal tail
Plate and perpendicular web, the T-steel hot rolling form integral structure, and the end face of the free end of the perpendicular web passes through tapered plane
It is transitioned into the first side of the perpendicular web.
In T-steel as described above, it is preferable that the end face of the free end of the perpendicular web is transitioned into institute by cambered surface
State the second side of perpendicular web.
In T-steel as described above, it is preferable that the cambered surface and tapered plane intersection.
In T-steel as described above, it is preferable that the junction of the horizontal wing plate and the perpendicular web is transition circle
Angle.
In T-steel as described above, it is preferable that the end angle at the both ends of the horizontal wing plate is fillet.
Another aspect of the present invention provides a kind of milling method of T-steel, and the T-steel is T-steel above-mentioned, described to roll
Method processed includes：Step 1：The blank after heating is rolled using roughing mill, rolls out symmetrical H-type rolled piece；Step
Rapid two：Using symmetry approach is carried out rolling meet in the incipient stage to the H-type rolled piece after roughing using universal finishing mill group
The H-type rolled piece that cutting requires, first uses pre-cut division technique to roll the H-type rolled piece for meeting cutting requirement in the finished product stage
It makes so that the intermediate position of H-type rolled piece is thinning, formation has the H-type rolled piece of the tapered plane, then uses cutting technique pair again
H-type rolled piece with the tapered plane carries out cutting, obtains two T-steels.
In milling method as described above, it is preferable that the start rolling temperature of the blank coarse rolling is 1000~1200 DEG C.
In milling method as described above, it is preferable that in step 1, total passage of the rolling is 6~14 passages.
In milling method as described above, it is preferable that the roughing mill successively has box pass along rolling direction, cuts
Deep hole type and control pass；The knifing pass and control pass are bilateral symmetry and upper and lower asymmetric pass.
In milling method as described above, it is preferable that the quantity of the knifing pass is three, successively along rolling direction
It is divided into：First knifing pass, the second knifing pass and third knifing pass；First knifing pass, the second knifing pass and
Third knifing pass makes blank gradually carry out contracting material, preliminarily forms horizontal wing plate while the perpendicular web is thinned.
Technical solution bring beneficial effect provided in an embodiment of the present invention is：
1) rolled piece is rolled into the H-type rolled piece for meeting cutting requirement first, cutting is then carried out by universal mill, is used
Blank it is big, low energy consumption, metal loss is small, high-efficient.
2) rolling mill practice of H-type rolled piece is used in the initial stage of rough rolling step and finish rolling, which produces H-type
Rolled piece is first rolled into the H-type rolled piece for meeting cutting requirement by product, can make full use of existing H profile steel tooling, realizes that equipment is total
With, it economizes on resources, reduction investment；It can also be improved rolling mill yield.
3) end of the perpendicular web of T-steel is transitioned into the first side of perpendicular web by tapered plane, after being convenient for
Continuous welding processing, the cut manufacturing procedure before omitting welding, reduces metal loss, is conducive to improve whole work efficiency, section
Cost-saving.
Detailed description of the invention
Fig. 1 is a kind of cross section structure schematic diagram of T-steel provided in an embodiment of the present invention；
Fig. 2 is a kind of pass structure schematic diagram of roughing mill provided in an embodiment of the present invention；
Fig. 3 is the pass structure signal of incipient stage universal mill in a kind of finish rolling step provided in an embodiment of the present invention
Figure；
Fig. 4 is the pass structure schematic diagram of incipient stage edging mill in a kind of finish rolling step provided in an embodiment of the present invention；
Fig. 5 is the pre-slit pass structure of cutting stage universal mill in a kind of finish rolling step provided in an embodiment of the present invention
Schematic diagram；
Fig. 6 is that the slitting pass structure of cutting stage universal mill in a kind of finish rolling step provided in an embodiment of the present invention is shown
It is intended to.
Symbol description is as follows in figure：
1 horizontal wing plate, 2 perpendicular webs, 21 free ends, 3 tapered planes, 4 first sides, 5 second sides, 6 cambered surfaces.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Referring to Fig. 1, the embodiment of the invention provides a kind of T-steels comprising：Horizontal wing plate 1 and perpendicular web 2, it is horizontal
The vertical section for the assembly that wing plate 1 and perpendicular web 2 are formed after vertically connecting is T-shaped.Perpendicular web 2 can connect in horizontal tail
The intermediate position of plate 1, at this time perpendicular web 2 and horizontal 1 both ends of wing plate (as shown in figure 1, the left end of horizontal wing plate and right end) away from
From equal；Perpendicular web 2 is also connected to the non-intermediate position of horizontal wing plate 1, at this time perpendicular web 2 and horizontal wing plate 1
The distance between one end (left end of horizontal wing plate as shown in figure 1) is not equal to the other end (such as Fig. 1 of perpendicular web 2 and horizontal wing plate 1
The distance between the right end of middle horizontal wing plate), in Fig. 1, perpendicular web 2 and the distance between one end of horizontal wing plate 1 are greater than
The distance between the other end of perpendicular web 2 and horizontal wing plate 1.The thickness of perpendicular web 2 can be with the thickness phase of horizontal wing plate 1
Together, can not also be identical, the present embodiment is to this without limiting.Perpendicular web 2 has first side 4, second side 5 and end face
(or end face of free end), first side 4 and second side 5 are opposite, and are connected with horizontal wing plate 1.Perpendicular web 2 from
The first side 4 that tapered plane 3 is transitioned into perpendicular web 2 is passed through by the end face held.Second side of the tapered plane 3 and perpendicular web 2
Face 5 is formed with angle α, and 0 °<α<90 °, it is preferable that 15 °≤α≤60 °, accordingly, the angle of tapered plane 3 and first side formation
It is 105 °~150 °, α can be 15 °, 20 °, 30 °, 40 °, 50 ° or 60 °.Horizontal wing plate 1 and 2 hot rolling of perpendicular web are connected to
It is formed together T-steel, i.e., the T-steel is hot rolling integral structure, so that T-steel forms tapered plane 3 by hot rolling, to T
During fashioned iron carries out welding processing, retaining wall on slope process is eliminated, metal loss is reduced, is conducive to improve overall work
Efficiency saves cost.
Preferably, the end face of the free end 21 of perpendicular web 2 is transitioned into the second side 5 of perpendicular web 2 by cambered surface 6,
So it is conducive to improve the support strength of T-steel, cambered surface 6 is preferably arc surface.Cambered surface 6 and tapered plane 3 can intersect, can also not
Intersection.In other examples, the end face of the free end 21 of perpendicular web 2 can also be transitioned into vertically by another tapered plane
The second side 5 of wing plate 2, another tapered plane can intersect with aforementioned tapered plane, can also be non-intersecting, at this time two tapered planes
Between between be separated with horizontal plane, the horizontal plane is vertical with first side 4 or second side 5.
In order to improve the stability of T-steel, the junction of horizontal wing plate 1 and perpendicular web 2 is knuckle, and radius is
r3.The end angle at the both ends of horizontal wing plate 1 is fillet, and as shown in figure 1, the upper and lower end angle of the left part of horizontal wing plate 1 is circle
Angle, radius r1；The upper and lower end angle of the right part of horizontal wing plate 1 is fillet, radius r2.The both ends of horizontal wing plate 1
Hold the radius at angle equal with the radius of knuckle that the junction of horizontal wing plate 1 and perpendicular web 2 is formed, i.e. r1=r2=
r3.The radius at the end angle at the both ends of horizontal wing plate 1 is equal with the radius r4 that cambered surface 6 is formed, the free end 21 of perpendicular web 2
End face the second side 5 of perpendicular web 2 is transitioned by cambered surface 6.
In practical application, the product size parameter of a certain T-steel can be as follows：
| Project | b | t1 | r1 | r2 | t2 | b1 | α | r3 | h | r4 |
| Size | 50 | 6 | 2 | 2 | 6 | 34 | 40 | 2 | 35 | 2 |
The embodiment of the invention also provides a kind of milling methods of T-steel, are using rolled h-section steel beam with blank as continuous casting square billet
Example is illustrated, and blank can also be rectangular bloom, which includes the following steps：
Continuous casting square billet is heated to 1000~1200 DEG C using heating furnace, such as by heating stepses S1：1100~1150 DEG C, even
The material for casting square billet can be Q345；
Continuous casting square billet after heating is sent and carries out split rolling method into blooming mill (or roughing mill), even by roughing step S2
Casting square billet obtains symmetrical H-type rolled piece after blooming mill N passes, and the upper and lower of H-type rolled piece can be symmetrical at this time, can also
With asymmetry, the present embodiment to it without limiting, H-type rolled piece it is asymmetric up and down when the T-steel that rolls out can be such as Fig. 1 institute
Show.N is 6-14 passage, is further 6~12 passages, such as 6,7,8,9,10,11 or 12 passages.
Finish rolling step S3, using universal finishing mill group to the H-type rolled piece after roughing the incipient stage using symmetry approach into
The rolling H-type rolled piece for meeting cutting requirement of row, first uses pre-cut division technique to the H-type for meeting cutting requirement in the finished product stage
Rolled piece, which carries out rolling, keeps the intermediate position of H-type rolled piece thinning to form the H-type rolled piece with tapered plane, then uses cutting work again
Skill carries out cutting to the H-type rolled piece with tapered plane and obtains two T-steels.
Referring to fig. 2, in roughing step S2, blooming mill is disposed with 5 passes, is followed successively by box pass along rolling direction
K1, three knifing pass：First knifing pass K2, the second knifing pass K3 and third knifing pass K4, control pass K5.Box
Pass K1 is used to for the blank after heating to be rolled into the symmetrical base for meeting dimensions.Three knifing pass K2, K3, K4 and control
Drilling type K5 is all made of bilateral symmetry and up and down asymmetric pass.The asymmetry up and down of pass meets lower flange height on finished product
Requirement, i.e. requirement of the perpendicular web at a distance from the left end of horizontal wing plate and at a distance from the right end of horizontal wing plate in Fig. 1 be left
Assymmetrical deformation is converted to symmetric deformation by right symmetrically realize, and meets the requirement of intermediate stage rolling stability.If three
Knifing pass K2, K3, K4 and control pass K5 be all made of bilateral symmetry and pass symmetrical above and below, then can meet perpendicular web with
Horizontal tail board ends are equidistant, and perpendicular web is located at the intermediate position of horizontal wing plate at this time.
Referring to Fig. 3~6, in finish rolling step, universal finishing mill group includes：Tetra- frame universal mill of U1, U2, U3, U4 and E1,
Two frame edging mill of E2, the order of placement along rolling direction are followed successively by U1, E1, U2, E2, U3, U4.U1 and U2 universal mill is all made of
Pass structure shown in Fig. 3.In order to can control the distance between perpendicular web and horizontal tail board ends (or edge of a wing height) variation,
Two frame edging mill E1 and E2 are set, and edging mill is using pass structure shown in Fig. 4.Rolled piece, which enters U3 universal mill, which carries out pre- cutting, makes
The middle section of H-type rolled piece is thinning to form the H-type rolled piece with tapered plane, and pass structure such as Fig. 5 can so to depress
Amount is smaller, consequently facilitating cutting.Last rolled piece enters U4 universal mill and carries out cutting, and pass structure is as shown in fig. 6, available
Two T-steels.Pass shown in fig. 5 has tapered plane at the intermediate position of H-type rolled piece, and pass shown in fig. 6 is in H-type rolled piece
Intermediate position is vertical.
In conclusion bring of the embodiment of the present invention has the beneficial effect that：
1) rolled piece is rolled into the H-type rolled piece for meeting cutting requirement first, cutting is then carried out by universal mill, is used
Blank it is big, low energy consumption, metal loss is small, high-efficient.
2) rolling mill practice of H-type rolled piece is used in the initial stage of rough rolling step and finish rolling, which produces H-type
Rolled piece is first rolled into the H-type rolled piece for meeting cutting requirement by product, can make full use of existing H profile steel tooling, realizes that equipment is total
With, it economizes on resources, reduction investment；It can also be improved rolling mill yield.
3) end of the perpendicular web of T-steel is transitioned into the first side of perpendicular web by tapered plane, after being convenient for
Continuous welding processing, the cut manufacturing procedure before omitting welding, reduces metal loss, is conducive to improve whole work efficiency, section
Cost-saving.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature
Case is realized.Therefore, embodiment disclosed above, in all respects are merely illustrative, not the only.Institute
Have within the scope of the present invention or is included in the invention in the change being equal in the scope of the present invention.
Claims (10)
1. a kind of T-steel, including：Connect T-shaped horizontal wing plate and perpendicular web, which is characterized in that the T-steel hot rolling
Integral structure is formed, the end face of the free end of the perpendicular web is transitioned into the first side of the perpendicular web by tapered plane
Face.
2. T-steel according to claim 1, which is characterized in that the end face of the free end of the perpendicular web passes through cambered surface
It is transitioned into the second side of the perpendicular web.
3. T-steel according to claim 2, which is characterized in that the cambered surface and tapered plane intersection.
4. T-steel according to claim 1, which is characterized in that the junction of the horizontal wing plate and the perpendicular web
For knuckle.
5. T-steel according to claim 1, which is characterized in that the end angle at the both ends of the horizontal wing plate is fillet.
6. a kind of milling method of T-steel, the T-steel is T-steel according to any one of claims 1 to 5, and feature exists
In the milling method includes：
Step 1：The blank after heating is rolled using roughing mill, rolls out symmetrical H-type rolled piece；
Step 2：The H-type rolled piece after roughing roll using symmetry approach in the incipient stage using universal finishing mill group
To the H-type rolled piece for meeting cutting requirement, first use pre-cut division technique to the H-type rolled piece for meeting cutting requirement in the finished product stage
It is rolled so that the intermediate position of H-type rolled piece is thinning, formation has the H-type rolled piece of the tapered plane, then uses cutting again
Technique carries out cutting to the H-type rolled piece with the tapered plane, obtains two T-steels.
7. milling method according to claim 6, which is characterized in that the start rolling temperature of the blank coarse rolling be 1000~
1200℃。
8. milling method according to claim 5, which is characterized in that in step 1, total passage of the rolling is 6~
14 passages.
9. milling method according to claim 5, which is characterized in that the roughing mill successively has box along rolling direction
Pass, knifing pass and control pass；
The knifing pass and control pass are bilateral symmetry and upper and lower asymmetric pass.
10. milling method according to claim 9, which is characterized in that the quantity of the knifing pass is three, along rolling
Direction is divided into：First knifing pass, the second knifing pass and third knifing pass；
First knifing pass, the second knifing pass and third knifing pass make blank gradually carry out contracting material, described vertical
Wing plate preliminarily forms horizontal wing plate while being thinned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628219.4A CN108916204A (en) | 2018-06-19 | 2018-06-19 | T-steel and its milling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628219.4A CN108916204A (en) | 2018-06-19 | 2018-06-19 | T-steel and its milling method |
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| CN108916204A true CN108916204A (en) | 2018-11-30 |
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ID=64421835
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| CN201810628219.4A Pending CN108916204A (en) | 2018-06-19 | 2018-06-19 | T-steel and its milling method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110142294A (en) * | 2019-05-09 | 2019-08-20 | 山东钢铁股份有限公司 | The milling method and its rolling system of open fashioned iron |
| CN110404959A (en) * | 2019-06-28 | 2019-11-05 | 中冶华天工程技术有限公司 | The equipment and technique of T-type elevator guide rail steel are produced by online cutting |
| CN115351070A (en) * | 2022-07-29 | 2022-11-18 | 新疆八一钢铁股份有限公司 | Novel rolling method of H-shaped steel |
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| CN208417220U (en) * | 2018-06-19 | 2019-01-22 | 山东钢铁股份有限公司 | T-steel |
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| GB602810A (en) * | 1943-05-13 | 1948-06-03 | John Cockerill Sa | A method of obtaining a variety of metallic sections especially suited to welded structures |
| JP2000282621A (en) * | 1999-03-30 | 2000-10-10 | Kawasaki Steel Corp | Welding shape steel |
| JP2007237275A (en) * | 2006-03-10 | 2007-09-20 | Nippon Steel Corp | Method for manufacturing t-steel or angle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110142294A (en) * | 2019-05-09 | 2019-08-20 | 山东钢铁股份有限公司 | The milling method and its rolling system of open fashioned iron |
| CN110404959A (en) * | 2019-06-28 | 2019-11-05 | 中冶华天工程技术有限公司 | The equipment and technique of T-type elevator guide rail steel are produced by online cutting |
| CN115351070A (en) * | 2022-07-29 | 2022-11-18 | 新疆八一钢铁股份有限公司 | Novel rolling method of H-shaped steel |
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