CN205480148U - Abnormal shape cross section thermal rolling steel plate book - Google Patents
Abnormal shape cross section thermal rolling steel plate book Download PDFInfo
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- CN205480148U CN205480148U CN201620195167.2U CN201620195167U CN205480148U CN 205480148 U CN205480148 U CN 205480148U CN 201620195167 U CN201620195167 U CN 201620195167U CN 205480148 U CN205480148 U CN 205480148U
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Abstract
The utility model provides an abnormal shape cross section thermal rolling steel plate book. Its cross section of abnormal shape cross section thermal rolling steel plate book comprises base plate (1), the bilateral buildup area (2) in middle part, the bilateral buildup area (3) of tip and inner arc r1, and its vertical length can reach 6 meters - 600 meters, and bilateral buildup area (2) in middle part and tip both sides buildup areas (3) join into a whole by base plate (1) level, passes through through inner arc r1 with base plate (1) in the bilateral buildup area (2) in middle part and tip bilateral buildup area (3). The utility model discloses abnormal shape cross section thermal rolling steel plate book adopts four roller compound hole type rolls and supporting technology finish rolling to form for production forming U rib steel, it is not enough to have solved the present two tip welding thickness in the thickness U rib that wait, and bent angle portion thickness attenuate the solder joint fracture and the structural strength unreasonable technological problem problem that lead to the fact, and the stability and the security that have improved the bridge have reduced bridge manufacturing and maintenance cost.
Description
Technical field
This utility model belongs to metallurgical technology field, is specifically related to a kind of profiled cross-section hot-rolled steel coiled sheet, particularly
A kind of special-shaped cross-section hot-rolled steel coiled sheet of the bridge U rib produced for cold roll forming.
Background technology
After World War II, Germany needs to rebuild impaired bridge in a large amount of war.At that time, four highly important bridges
Innovative idea in beam engineering: cable-stayed bridge, composite beam, Orthotropic steel plate and prestressed concrete sections are executed
Engineering method almost develops rapidly simultaneously, and the application of orthogonality slab bridge floor make the bridge of many super-large spans become can
Energy.The scale of Bridges in Our Country construction in nearly 20 years is big, has no precedent in history.Especially into 21 century
Later over nearly 10 years, the construction of China's Longspan Bridge enters a period the most brilliant, orthogonality slab bridge
Beam is developed rapidly and applies, from overhead road of city steel structure bridge to across river, highway over strait with or rail-road two
With large bridge, it is increasingly employed orthogonality slab bridge.In steel bridge construction bridge, U rib steel is by a large number
Application, at present, in world wide the production of U rib steel all employings uniform thickness hot rolled steel plate punching press clod wash method applied or
Roll-in clod wash method produces, and owing to U rib steel relatively thin both ends pad is easy to crack, and the angle after clod wash is the most thinning,
Manufacture and bridge security are made troubles by these problems.
Document " metal Leader, the world " 2014.07.08 has reported " Varying-thickness rolling technique and minimizing research and development of products ",
7th row: the product of Varying-thickness is more beneficial for having given play to the potential bearing capacity of material than product in uniform thickness.Based on this
Plant understanding and occur in that the longitudinal variable-thickness such as hot rolling Varying Thickness Plates (LP plate), cold rolling poor slab (TRB plate) produces successively
Product.Milling equipment is required higher by this technology: disclosure satisfy that the requirement of change roll gap real-time, quick, accurate, joins
Standby automatic thickness control system, high precision mathematical model, the micro-tracking in accurate rolled piece position device.
Varying-thickness rolling typical products LP plate also reported by document " Varying-thickness rolling therory and the new development of application "
With TRB plate longitudinal variable-thickness product.
Document " material science and technique " paper " gap Set Model of Varying-thickness district thin plate rolling and test " is reported
Lead gap Set Model during longitudinal variable-thickness product Rolling Production.
Document thesis for the doctorate " longitudinal variable-thickness flat steel product rolling therory is studied with control strategy " has reported sheet material longitudinally
The rolling therory of Varying-thickness and control.
Patent documentation CN201010282876.1 discloses the production method of a kind of longitudinal thickness-variable steel plate, by controlling
The steel billet top and bottom temperature difference, upper working rolls and lower working rolls diameter difference, steel plate thickness mathematical model zero point, mill speed etc., raw
Output longitudinal thickness-variable steel plate.
Patent documentation CN201310227028.4 discloses the production method of a kind of transverse wedge-shaped rolled thickness-variable steel plate,
Cross rolling, during the rolling of final longitudinal variable cross-section, one end centre-to-centre spacing of flat-rolled roller used is little, and other end centre-to-centre spacing is big,
The sheet material shut out is longitudinally in the wedge shape that thin one side on one side is thick.
Patent documentation CN201010042050.8 discloses the production method of a kind of large longitudinal variable cross-section steel plates, produces
Equipment uses Universal hydraulic press, and raw material uses steel ingot, is produced by operations such as punching, reaming, cylinder flattenings
Go out the large longitudinal variable cross-section steel plates of wedge shape.
Patent documentation CN200610046457.1 discloses the continuous rolling method of a kind of variable-thickness steel plate, is by adjusting
The roll gap of whole roll realizes the longitudinal direction rolling of variable-thickness steel plate.
Longitudinal thickness-variable steel plate described in comprehensive document above and patent documentation is all use flat-rolled roller, employing mathematical model or
Roll gap adjustment devices etc., realize the production of longitudinal thickness-variable steel plate by the regulation of roll gap size, and each of which is transversal
It it is the most all equal thickness on face.Or little by controlling inclination one end centre-to-centre spacing of flat-rolled roller, other end center
Away from the longitudinal Rolling Production realizing greatly wedge-shaped steel plate.
Patent documentation CN201510386345.X discloses a kind of Varying-thickness vehicle doorsill girder and manufacture method thereof, described
Varying-thickness vehicle doorsill girder, it is characterised in that described sill strip inner panel, sill strip outside plate and connecting plate are by spot welding even
It is connected together.
The one that discloses patent documentation CN201520469777.2 does not wait steel sheet and plate laser assembly solder device, at present
The steel plate of thickness is all to use welding manner to produce, and main cause is that equal thickness thin plate Direct Rolling difficulty is not very big.
Summary two patent documentation does not wait steel sheet and plate or Varying-thickness vehicle doorsill girder to be all by laser assembly solder or point
The Varying-thickness that weldering connected mode realizes.
Patent documentation CN201510754406.3 discloses a kind of U head of rib portion shaping mechanism, and it can be to sheet material two ends
Carry out extruded, be done directly bevel shape, it is not necessary to follow-up carry out again milling or planing operation.Patent documentation
CN201510754526.3 discloses the manufacture method of a kind of non-uniform thickness U rib, and it passes through multiple tracks molding to sheet material two ends
Carry out extruding and form bevel shape, carry out bending, shaping and sawing the most again, eliminate traditional milling or planing
Operation, improves production efficiency.Patent documentation CN201510754569.1 discloses a kind of non-uniform thickness U rib production line,
Directly sheet material two ends are carried out extruded formation bevel shape, carry out bending, shaping and sawing the most again, omit
Milling or planing operation.
Three above patent documentation is same unit application, be sheet material two ends are carried out extruded for groove shape
Shape, decreases milling or the operation of planing groove.The biggest stress is accumulated, at U rib after extruding due to steel plate two ends
During welding, stress is cumulative easily causes weld bond cracking, and increases stress corrosion speed.Sheet material two ends carry out cold extrusion, by
Cause local deformation uneven in metal flow relatively difficulty or ease, and under bigger stress, be likely to result in steel plate edge delamination splitting.
The method production difficulty is big, lumber recovery is low, adds new energy consumption, and production efficiency low cost is high.
Patent documentation CN201510074469.4 discloses the manufacture method of a kind of non-uniform thickness U rib, the both sides to steel plate
After faradism heating, extrude with forge hot roller die, make U rib lower limb end occur metal flow to become local not equal thickness,
Directly it is swaged into bevel shape.
Patent documentation CN201510224954.5 discloses a kind of non-uniform thickness U rib hot-rolling pressing formation technique, patent documentation
CN201520285781.3 discloses a kind of U-shaped steel hot-rolling pressing formation device of bridge.This two patent is all to
The lower limb end of the finished product U rib of molding carries out sensing heating, is made the upset modification in end by the roll of two passages again, due to
Thermal stress and machining stress exist, and need to enter continuous annealing furnace destressing, then align the U rib after modification.
Method described in above-mentioned three patent documentations all adds new energy consumption, and production efficiency low cost is high.Owing to being local
Heat and forge or the upset modification of roll-in, all there is bigger machining stress and thermal stress, U rib steel is welded on
All have adverse effect on bridge floor, easily cause weld cracking.
Patent documentation CN201420274989.0 discloses one and does not wait wall thickness hot rolling U rib steel, uses universal rolling mill
Group or two roller Continuous mill train carry out the hot rolling U rib steel of rolling production, especially Thin Specs due to operation of rolling temperature fall
Low very fast production difficulty is very big, there is presently no report and is mass produced and applies.
Patent documentation CN201520042789.7 discloses a kind of bridge port enhancement mode U rib, and bottom is uiform section,
The top of top variable cross-section thickeies, and the document only describes the shape of a kind of U rib, do not announces manufacture method,
The most do not find the report about application.
The U rib steel manufacture method currently applied the most fundamentally resolves U rib steel both ends throat thickness
Thinning the caused solder joint cracking of not enough and clod wash corner thickness and the unreasonable problem of structural strength.
Summary of the invention
For solving the deficiencies in the prior art, this utility model provides a kind of special-shaped cross-section hot-rolled steel coiled sheet and system thereof
Make method.
This utility model provide a kind of special-shaped cross-section hot-rolled steel coiled sheet by substrate (1), the bilateral buildup area in middle part (2),
The bilateral buildup area in end (3) and inner arc r1 composition, its longitudinal length is up to 6 meters 600 meters, and middle part is bilateral to be thickened
District (2) and end bilateral buildup area (3) are connected to an entirety, the bilateral buildup area in middle part by substrate (1) level
(2) inner arc (r1) rounding off is used and between the bilateral buildup area in end (3) and substrate (1).Such as Fig. 1 institute
Show.
Preferably, the bilateral buildup area in described middle part (2) is to survey the most each at substrate (1) centrage (AA) two
Having one, the bilateral buildup area in middle part (2) is linked together by inner arc (r1) rounding off with substrate (1).
Distance between two middle part bilateral buildup area (2) centrages is 0mm～500mm, more preferably 150mm～
300mm。
Preferably, the bilateral buildup area in described end (3) is respectively arranged with one symmetrically at substrate (1) two ends, left and right, end
The bilateral buildup area in portion (3) is linked together by inner arc r1 rounding off with substrate (1).
Preferably, described substrate thickness d is 2～20mm, more preferably 4～12mm；The bilateral buildup area in described middle part
(2) thickness d 1 is 3～26mm, more preferably 5～16mm；Described end bilateral buildup area (3) thickness d 2 is
4～28mm, more preferably 6～18mm.Substrate thickness d, middle part bilateral buildup area thickness d 1, end is bilateral thickens
The relation of district's thickness d 2 meets d≤d1≤d2 simultaneously.
Preferably, two the bilateral buildup area in middle parts (2) are substituted by two bilateral arc buildup areas (4), bilateral arc
Together with the outer arc r2 of shape buildup area (4) is connected smoothly with substrate (1).As shown in Figure 2.I.e. special-shaped horizontal
Cross section hot-rolled steel coiled sheet is made up of substrate (1), bilateral arc buildup area (4), the bilateral buildup area in end (3), double
Limit arc buildup area (4) and end bilateral buildup area (3) are connected to an entirety by substrate (1) level, bilateral
Together with the outer arc r2 of arc buildup area (4) is connected smoothly with substrate (1).Preferably, described bilateral arc
Shape buildup area (4) is to survey at substrate (1) centrage (AA) two to be respectively arranged with one symmetrically, bilateral arc buildup area
(4) linked together by outer arc (r2) rounding off with substrate (1).Two bilateral arc buildup areas (4)
Distance between centrage is 0mm～500mm, more preferably 150mm～300mm.Described end is bilateral to be thickened
District (3) is respectively arranged with one symmetrically at substrate (1) two ends, left and right, the bilateral buildup area in end (3) and substrate (1)
Linked together by inner arc r1 rounding off.
Preferably, described inner arc r1 and outer arc r2 is transition arcs, and this specialized engineering technical staff is according to actual need
It is designed, it is achieved seamlessly transit.
Preferably, two the bilateral buildup area in middle parts (2) or two bilateral arc buildup areas (4) are by being positioned at centrage
(AA) the bilateral buildup area in a middle part (2) or a bilateral arc buildup area (4) on substitute, and are used for producing
" V " type rib.As shown in Figure 3.The bilateral buildup area in described middle part (2) is positioned on centrage (AA), and middle part is double
Limit buildup area (2) is linked together by inner arc (r1) rounding off with substrate (1).Or, bilateral arc
Buildup area (4) is positioned on centrage (AA), and the outer arc r2 of bilateral arc buildup area (4) puts down with substrate (1)
Slip over to cross and link together.
Preferably, described profiled cross-section hot-rolled steel coiled sheet is single by two the monolateral buildup area in ends (5), two middle parts
Limit buildup area (6), substrate (1) and outer arc r1 composition.As shown in Figure 4.The i.e. one side of steel plate is flat, and another
One side exists concavo-convex.Profiled cross-section hot-rolled steel coiled sheet, by two the monolateral buildup area in ends (5), in two
The monolateral buildup area in portion (6), substrate (1) and inner arc r1 composition；The monolateral buildup area in middle part (6) is in substrate (1)
Heart line (AA) two is surveyed and is respectively arranged with one symmetrically, and the monolateral buildup area in middle part (6) and substrate (1) are by inner arc (r1)
Rounding off links together；The monolateral buildup area in end (5) is respectively arranged with one symmetrically at substrate (1) two ends, left and right,
The monolateral buildup area in end (5) is linked together by inner arc r1 rounding off with substrate (1).
It is furthermore preferred that two the monolateral buildup area in middle parts (6) are substituted by two monolateral arc buildup areas (7), such as Fig. 5
Shown in.Profiled cross-section hot-rolled steel coiled sheet, its cross section is by two the monolateral buildup area in ends (5), two monolateral arcs
Shape buildup area (7), substrate (1) and outer arc r2 composition；Monolateral arc buildup area (7) is at substrate (1) centrage
(AA) two surveys are respectively arranged with one symmetrically, and the outer arc r2 of monolateral arc buildup area (7) is smoothed with substrate (1)
Cross and link together.
Preferably, described special-shaped cross-section hot-rolled steel coiled sheet, its cross section is by substrate (1) and end is bilateral thickens
District (3) forms, and each bilateral buildup area in the end (3) in substrate (1) two ends is by inner arc r1 and substrate (1)
It is connected, as shown in Figure 6.
Preferably, described special-shaped cross-section hot-rolled steel coiled sheet, its cross section is by substrate (1) and end is monolateral thickens
District (5) forms, and each monolateral buildup area in the end (5) in substrate (1) two ends is by inner arc r1 and substrate (1)
It is connected, as shown in Figure 7.
Preferably, this utility model also provides for a kind of four roller composite holes rolling for special-shaped cross-section hot rolled steel plate and making
Type roll, by top working roll (11), bottom working roll (12), upper backup roll (13), lower backing roll (14), on
Work roll shaft (15), bottom working roll (16), upper backup roll axle (17), lower backing roll axle (18), composition, on
Support roller (13), top working roll (11), bottom working roll (12), lower backing roll (14) are arranged the most successively
Row, respectively by top working roll axle (15), bottom working roll (16), upper backup roll axle (17) and lower backing roll axle
(18) it is arranged in rolling-mill housing.Top working roll (11) and bottom working roll (12) are processed into different with being respectively symmetrically
The most corresponding upper work of the shape of type cross section hot rolled steel plate (19), upper backup roll (13) and lower backing roll (14)
The shape making roller (11) and bottom working roll (12) is processed into matched pass, plays working roll important
Supporting role.
This utility model also provide for produce special-shaped cross-section hot-rolled steel coiled sheet finishing mill, it is characterised in that use with
Upper four described roller composite holes rolls.
The special-shaped cross-section hot-rolled steel coiled sheet that this utility model provides, possesses following advantage:
1) design of the bilateral buildup area in end (3) and the realization of special-shaped cross-section hot-rolled steel coiled sheet, clod wash becomes U rib
Really solve the problem that U rib steel weld often ftractures because bonding area is little after steel, improve steel structure bridge
Welding Structure safety, improve a solder yield, improve manufacture efficiency, decrease bridge U-rib steel
Because of the secondary welding that causes of cracking with safeguard welding expense, reduce bridge comprehensive cost；
2) design of the bilateral buildup area in middle part (2) or bilateral arc buildup area (4) etc. and special-shaped cross-section hot-rolled steel
The realization of coiled sheet, clod wash solves corner that U rib steel causes because of clod wash thinning weak link after becoming U rib steel is asked
Topic, makes structure stress evenly, and structure is more stable and safety；
3) global design of special-shaped cross-section hot rolled steel plate volume structure, clod wash solves U rib steel after becoming U rib steel overall
More optimized structure problem, this design can alleviate the overall structure weight of U rib steel, strengthen structural strength and structure
Stability, U steel accounts for the 30% of steel structure bridge overall weight, thus reduces steel structure bridge gross weight, saves
Steel, energy-saving and cost-reducing.And special-shaped cross-section hot-rolled steel coiled sheet can realize the high-volume of U rib steel and produce continuously,
Production efficiency is high, save material, comprehensive energy consumption is low, production cost is low, reduces CO2Discharge, energy-conserving and environment-protective, society
Can be profitable.
4) special-shaped cross-section hot rolled steel plate only has welding to be capable of at present, but welding can only be the most small quantities of
Amount produces, it is difficult to realize continuous large-scale production, and welding production efficiency is low, it is the highest to produce.Special-shaped cross-section
Hot-rolled steel coiled sheet to solve coiled sheet on the cross section of bigger difficulty compared with rolling with prior art longitudinal thickness-variable steel plate
Hot rolling wave type wooden dipper is bent, cross section performance uniformity controls, controls that the inhomogeneous cooling wooden dipper in cold stage is bent and hot rolling takes etc. one
A series technique difficult problem.The particular design of four roller composite holes rolls and special-shaped cross-section hot rolled steel plate roll up manufacturing process
Design, solves special-shaped cross-section hot-rolled steel coiled sheet and uses a series of technology of four roller strip-mill strip Rolling Production first
A difficult problem, has filled up the blank in this field.
Accompanying drawing explanation
Fig. 1 is this utility model cross-sectional structure schematic diagram；
Fig. 2 is this utility model bilateral arc buildup area version schematic diagram；
Fig. 3 is one, this utility model center middle part bilateral buildup area version schematic diagram；
Fig. 4 is the monolateral buildup area in this utility model end and middle part monolateral buildup area version schematic diagram；
Fig. 5 is the monolateral buildup area in this utility model end and monolateral arc buildup area version schematic diagram；
Fig. 6 is that this utility model only has end bilateral buildup area version schematic diagram；
Fig. 7 is that this utility model only has end monolateral buildup area version schematic diagram；
Fig. 8 is this utility model production roll structure schematic diagram；
Accompanying drawing identifies:
1. substrate, 2. in the middle part of bilateral buildup area, the 3. bilateral buildup area in end, the most bilateral arc buildup area, 5. end
Monolateral buildup area, 6. in the middle part of monolateral buildup area, the most monolateral arc buildup area, r1. inner arc, r2. outer arc, in AA.
Heart line, 11. top working rolls, 12. bottom working rolls, 13. upper backup rolls, 14. lower backing rolls, 15. top working roll axles,
16. bottom working rolls, 17. upper backup roll axles, 18. lower backing roll axles, 19. special-shaped cross-section hot rolled steel plates,
D. substrate thickness, bilateral buildup area thickness in the middle part of d1., d2. end bilateral buildup area thickness.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is described further, but is not limited to this.
Embodiment 1:
A kind of special-shaped cross-section hot-rolled steel coiled sheet, by substrate 1, the bilateral buildup area in middle part 2, the bilateral buildup area in end 3
With inner arc r1 form, its longitudinal length up to 350 meters, the bilateral buildup area of the bilateral buildup area in middle part 2 and end 3 by
Substrate 1 level connects to an entirety, between the bilateral buildup area of the bilateral buildup area in middle part 2 and end 3 and substrate 1
Use inner arc r1 rounding off.As shown in Figure 1.
The bilateral buildup area in described middle part 2 is to survey at substrate (1) centrage AA two to be respectively arranged with one symmetrically, and middle part is double
Limit buildup area 2 is linked together by inner arc r1 rounding off with substrate 1.
Distance between two middle part bilateral buildup area 2 centrages is 150mm.
The bilateral buildup area in described end 3 is respectively arranged with one symmetrically at substrate about 1 two ends, the bilateral buildup area in end 3
Linked together by inner arc r1 rounding off with substrate 1.
Described substrate thickness d is 5mm；Described middle part bilateral buildup area 2 thickness d 1 is 6mm；Described end is double
Limit buildup area 3 thickness d 2 is 7mm.
The manufacturing process of special-shaped cross-section hot-rolled steel coiled sheet, including heating of plate blank, de-scaling, roughing, Coil Box, removes
Squama, four frame finish rolling, three frame four roller composite holes roll finish rolling, control cold and thermomechanical and batch, it is characterized in that:
After the heating of slab heated stove, tapping temperature is 1170 DEG C-1200 DEG C；Roughing uses two-roller reversible mill milling,
Described two-roller reversible milling train maximum rolling force is 12000～30000KN, and roughing rolling reduction is total deformation
60%～90%, obtain 22mm-30mm thickness intermediate blank through 5 passage roughing, roughing extreme trace temperature controls at 1030 DEG C
-1090℃；Tropical base after roughing enters Coil Box and batches insulation, performs blank for finish rolling and prepares；Finish rolling uses
Maximum rolling force be 6000～16000KN three frames or four frame four roller hot tandem carry out 3 passages or 4 passages
Tandem rolling；Four roller composite holes roll finish rolling use three frame high rigidity finishing mills to carry out finished product rolling, then through 3 passages four
Roller composite holes roll finish rolling, finishing temperature 865 ± 20 DEG C；Control cold employing section cooling equipment and product controlled cold,
Temperature controls to coiling temperature 615 ± 15 DEG C；Final finished batches rolling through thermomechanical.Special-shaped cross-section hot rolled steel plate
Volume may be used without the multiple length of 2 times or many times of big milling train and produces, and improves production efficiency, reduces production cost.
Described four roller composite holes rolls by top working roll 11, bottom working roll 12, upper backup roll 13, lower backing roll 14,
Top working roll axle 15, bottom working roll 16, upper backup roll axle 17, lower backing roll axle 18 forms, upper backup roll 13,
Top working roll 11, bottom working roll 12, lower backing roll 14 are from top to bottom arranged in order, respectively by top working roll axle
15, bottom working roll 16, upper backup roll axle 17 and lower backing roll axle 18 are arranged in rolling-mill housing.Top working roll 11
Be processed into the shape of special-shaped cross-section hot rolled steel plate 19 with being respectively symmetrically with bottom working roll 12, upper backup roll 13 and under
The shape supporting roller 14 corresponding top working roll 11 and bottom working roll 12 respectively is processed into matched pass, right
Working roll plays important supporting role.
Embodiment 2
Other are with embodiment 1, and difference is:
Special-shaped cross-section hot-rolled steel coiled sheet, by substrate 1, the bilateral buildup area in middle part 2, the bilateral buildup area in end 3 and interior
Arc r1 forms, and its longitudinal length is up to 450 meters；Distance between two middle part bilateral buildup area 2 centrages is
250mm。
Described substrate thickness d is 7mm；Described middle part bilateral buildup area 2 thickness d 1 is 8mm；Described end is double
Limit buildup area 3 thickness d 2 is 10mm.
Embodiment 3
Other are with embodiment 1, and difference is:
Special-shaped cross-section hot-rolled steel coiled sheet, by substrate 1, the bilateral buildup area in middle part 2, the bilateral buildup area in end 3 and interior
Arc r1 forms, and its longitudinal length is up to 550 meters；Distance between two middle part bilateral buildup area 2 centrages is
480mm。
Described substrate thickness d is 20mm；Described middle part bilateral buildup area 2 thickness d 1 is 22mm；Described end
Bilateral buildup area 3 thickness d 2 is 26mm.
Embodiment 4
Other are with embodiment 1, and difference is:
Special-shaped cross-section hot-rolled steel coiled sheet, by substrate 1, the bilateral buildup area in middle part 2, the bilateral buildup area in end 3 and interior
Arc r1 forms, and its longitudinal length is up to 12 meters；Other are with embodiment 1, and difference is:
Distance between two middle part bilateral buildup area 2 centrages is 0mm, the bilateral buildup area in the most described middle part 2
On centrage AA, it is used for producing " V " type rib.As shown in Figure 3.
Described substrate thickness d is 3mm；Described middle part bilateral buildup area 2 thickness d 1 is 4mm；Described end is double
Limit buildup area 3 thickness d 2 is 5mm.Embodiment 5
A kind of special-shaped cross-section hot-rolled steel coiled sheet, by substrate 1, bilateral arc buildup area 4, the bilateral buildup area in end 3
Composition, the bilateral buildup area of bilateral arc buildup area 4 and end 3 is connected to an entirety by substrate 1 level, bilateral
Together with the outer arc r2 of arc buildup area 4 is connected smoothly with substrate 1.As shown in Figure 2.
Described bilateral arc buildup area 4 is to survey at substrate 1 centrage AA two to be respectively arranged with one symmetrically, bilateral arc
Buildup area 4 is linked together by outer arc r2 rounding off with substrate 1.Two bilateral arc buildup area 4 centrages
Between distance be 170mm.The bilateral buildup area in described end 3 is respectively arranged with one symmetrically at substrate about 1 two ends,
The bilateral buildup area in end 3 is linked together by inner arc r1 rounding off with substrate 1.Other are with embodiment 1.
Embodiment 6
Other are with embodiment 5, and difference is, bilateral arc buildup area 4 is positioned on centrage AA, bilateral arc
Together with the outer arc r2 of shape buildup area 4 is connected smoothly with substrate 1.
Embodiment 7
Described special-shaped cross-section hot-rolled steel coiled sheet by 5, two monolateral buildup areas in middle part 6 of two monolateral buildup areas in end,
Substrate 1 and outer arc r1 composition.As shown in Figure 4.The i.e. one side of steel plate is flat, and another side exists concavo-convex.
Special-shaped cross-section hot-rolled steel coiled sheet, by two monolateral buildup areas in end 5, two the monolateral buildup areas in middle part 6, substrates 1
Form with outer arc r1；The monolateral buildup area 6 in middle part is surveyed at substrate 1 centrage AA two and is respectively arranged with one symmetrically, middle part
Monolateral buildup area 6 is linked together by inner arc r1 rounding off with substrate 1；End monolateral buildup area 5 is at substrate
About 1 two ends are respectively arranged with one symmetrically, and the monolateral buildup area in end 5 is connected by inner arc r1 rounding off with substrate 1
Together.Other are with embodiment 1.
Embodiment 8
Other are with embodiment 7, and difference is,
It is furthermore preferred that two monolateral buildup areas in middle part 6 are substituted, as shown in Figure 5 by two monolateral arc buildup areas 7.
Special-shaped cross-section hot-rolled steel coiled sheet, by two monolateral buildup areas in end 5, two monolateral arc buildup areas 7, substrates 1
Form with outer arc r1；Monolateral arc buildup area 7 is surveyed at substrate 1 centrage AA two and is respectively arranged with one symmetrically, monolateral
Together with the outer arc r2 of arc buildup area 7 is connected smoothly with substrate 1.
Embodiment 9
Other are with embodiment 1, and difference is, special-shaped cross-section hot-rolled steel coiled sheet, double by substrate 1 and end
Limit buildup area 3 forms, and each bilateral buildup area in end in substrate 1 two ends 3 is connected with substrate 1 by inner arc r1,
As shown in Figure 6.
Embodiment 10
Other are with embodiment 1, and difference is, special-shaped cross-section hot-rolled steel coiled sheet is monolateral by substrate 1 and end
Buildup area 5 forms, and each monolateral buildup area in end in substrate 1 two ends 5 is connected with substrate 1 by inner arc r1, as
Shown in Fig. 7.Embodiment 11
Other are with embodiment 1, and difference is:
Described three frames or four frame four roller hot tandem carry out 3 passages or 4 passage tandem rollings, then through two framves to four framves
High rigidity four roller composite holes roll carries out 2 passages to 4 passage finish rolling；Three frames or four frame two roller heat can be used even
Milling train group or omnipotent hot tandem carry out 3 passages or 4 passage tandem rollings, then through two framves to four frame high rigidity two rollers
Hot tandem or omnipotent hot tandem concave roll carry out 2 passages and substitute to 4 passage finish rolling.
Claims (12)
1. a hot-rolled steel coiled sheet, its cross section is made up of substrate (1), the bilateral buildup area in middle part (2), the bilateral buildup area in end (3) and inner arc r1, its longitudinal length 6 meters 600 meters, the bilateral buildup area in middle part (2) and the bilateral buildup area in end (3) are connected to an entirety by substrate (1) level, use inner arc (r1) rounding off between the bilateral buildup area in middle part (2) and end bilateral buildup area (3) and substrate (1).
Hot-rolled steel coiled sheet the most according to claim 1, it is characterized in that, the bilateral buildup area in described middle part (2) is to be respectively arranged with one in substrate (1) centrage (AA) lateral symmetry, and the bilateral buildup area in middle part (2) is linked together by inner arc (r1) rounding off with substrate (1).
Hot-rolled steel coiled sheet the most according to claim 2, it is characterised in that the distance between two middle part bilateral buildup area (2) centrages is 150 mm～300mm.
4. according to the hot-rolled steel coiled sheet described in any one of claim 1 ~ 3, it is characterized in that, the bilateral buildup area in described end (3) is respectively arranged with one symmetrically at substrate (1) two ends, left and right, and the bilateral buildup area in end (3) is linked together by inner arc r1 rounding off with substrate (1).
5. according to the hot-rolled steel coiled sheet described in any one of claim 1 ~ 3, it is characterised in that described substrate thickness d is 2～20mm；Described middle part bilateral buildup area (2) thickness d 1 is 3～26mm；Described end bilateral buildup area (3) thickness d 2 is 4～28mm；Substrate thickness d, middle part bilateral buildup area thickness d 1, the relation of end bilateral buildup area thickness d 2 meet d≤d1≤d2 simultaneously.
Hot-rolled steel coiled sheet the most according to claim 4, it is characterised in that described substrate thickness d is 2～20mm；Described middle part bilateral buildup area (2) thickness d 1 is 3～26mm；Described end bilateral buildup area (3) thickness d 2 is 4～28mm；Substrate thickness d, middle part bilateral buildup area thickness d 1, the relation of end bilateral buildup area thickness d 2 meet d≤d1≤d2 simultaneously.
7. a hot-rolled steel coiled sheet, its cross section is made up of substrate (1), bilateral arc buildup area (4), the bilateral buildup area in end (3), bilateral arc buildup area (4) and the bilateral buildup area in end (3) are connected to an entirety by substrate (1) level, together with the outer arc r2 of bilateral arc buildup area (4) is connected smoothly with substrate (1)；
Distance between two bilateral arc buildup area (4) centrages is 0 mm～500mm, the bilateral buildup area in described end (3) is respectively arranged with one symmetrically at substrate (1) two ends, left and right, and the bilateral buildup area in end (3) is linked together by inner arc r1 rounding off with substrate (1).
Hot-rolled steel coiled sheet the most according to claim 7, it is characterized in that, described bilateral arc buildup area (4) is to be respectively arranged with one in substrate (1) centrage (AA) lateral symmetry, and bilateral arc buildup area (4) is linked together by outer arc (r2) rounding off with substrate (1)；Distance between two bilateral arc buildup area (4) centrages is 150 mm～300mm.
9. according to the hot-rolled steel coiled sheet described in claim 1 ~ 3, any one of 6-8, it is characterized in that, the bilateral buildup area in described middle part (2) is positioned on centrage (AA), and the bilateral buildup area in middle part (2) is linked together by inner arc (r1) rounding off with substrate (1)；
Or, bilateral arc buildup area (4) is positioned on centrage (AA), together with the outer arc r2 of bilateral arc buildup area (4) is connected smoothly with substrate (1).
Hot-rolled steel coiled sheet the most according to claim 4, it is characterised in that the bilateral buildup area in described middle part (2) is positioned on centrage (AA), and the bilateral buildup area in middle part (2) is linked together by inner arc (r1) rounding off with substrate (1)；
Or, bilateral arc buildup area (4) is positioned on centrage (AA), together with the outer arc r2 of bilateral arc buildup area (4) is connected smoothly with substrate (1).
11. hot-rolled steel coiled sheets according to claim 5, it is characterised in that the bilateral buildup area in described middle part (2) is positioned on centrage (AA), and the bilateral buildup area in middle part (2) is linked together by inner arc (r1) rounding off with substrate (1)；
Or, bilateral arc buildup area (4) is positioned on centrage (AA), together with the outer arc r2 of bilateral arc buildup area (4) is connected smoothly with substrate (1).
12. 1 kinds of hot-rolled steel coiled sheets, its cross section is made up of two the monolateral buildup area in ends (5), two the monolateral buildup area in middle parts (6), substrate (1) and inner arc r1；The monolateral buildup area in middle part (6) is respectively arranged with one in substrate (1) centrage (AA) lateral symmetry, and the monolateral buildup area in middle part (6) is linked together by inner arc (r1) rounding off with substrate (1)；The monolateral buildup area in end (5) is respectively arranged with one symmetrically at substrate (1) two ends, left and right, and the monolateral buildup area in end (5) is linked together by inner arc r1 rounding off with substrate (1).
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| CN201621054247.2U CN206093479U (en) | 2016-03-15 | 2016-03-15 | Abnormal shape cross section thermal rolling steel plate book |
| CN201620195167.2U CN205480148U (en) | 2016-03-15 | 2016-03-15 | Abnormal shape cross section thermal rolling steel plate book |
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| CN201620195167.2U CN205480148U (en) | 2016-03-15 | 2016-03-15 | Abnormal shape cross section thermal rolling steel plate book |
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| CN105605404A (en) * | 2016-03-15 | 2016-05-25 | 莱芜美澳冶金科技有限公司 | Special-shaped-cross-section hot-rolled steel plate coil and manufacturing method thereof |
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| CN112620398B (en) * | 2021-03-10 | 2021-06-15 | 四川华体照明科技股份有限公司 | Continuous forming device and forming process for metal plate |
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| CN105605404A (en) * | 2016-03-15 | 2016-05-25 | 莱芜美澳冶金科技有限公司 | Special-shaped-cross-section hot-rolled steel plate coil and manufacturing method thereof |
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