CN109877154A - A kind of production system and production method of high ductility Ribbed Bar - Google Patents
A kind of production system and production method of high ductility Ribbed Bar Download PDFInfo
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- CN109877154A CN109877154A CN201910186929.0A CN201910186929A CN109877154A CN 109877154 A CN109877154 A CN 109877154A CN 201910186929 A CN201910186929 A CN 201910186929A CN 109877154 A CN109877154 A CN 109877154A
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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
- B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/163—Rolling or cold-forming of concrete reinforcement bars or wire ; Rolls therefor
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Abstract
A kind of production system and production method of high ductility Ribbed Bar, belong to steel bar cold rolling field, the production system includes at least two kinds of rolling equipments and two kinds of annealing devices, two kinds of rolling equipments include rolling reducing mill and rolling pressure rib machine, two kinds of annealing devices include an annealing device and secondary heat treatment device, two kinds of annealing devices are separately positioned in the front-rear position of rolling pressure rib machine, temperature monitor is respectively arranged with after two kinds of annealing devices, annealing device, secondary heat treatment temperature and temperature monitor are also connect with production lane controller, the rolling pressure rib processing of last time reinforcing bar is carried out after primary heat treatment, the hardness having when can reduce steel bar cold rolling, to which required cold rolling power when cold rolling can be reduced, it is energy saving, by secondary heat treatment, further increase tensile strength and rate elongation.
Description
Technical field
The present invention relates to a kind of production system production method of reinforcing bar, in particular to a kind of production of high ductility Ribbed Bar
System and production method belong to steel bar cold rolling field.
Background technique
With the continuous development of China's high-speed rail, reinforcing bar demand used in high-speed rail is also soaring sharply, however, high-speed rail
Used in reinforcing bar have special requirement, it is desirable that reinforcing bar had both had high ductility, required with certain tensile strength, tradition
Reinforcing bar production in, including hot-roll forming and cold rolling molding, compared with hot-roll forming, cold rolling molding have more the feature of environmental protection, stabilization
The features such as, cold rolling molding in, the wire rod of use is to be formulated according to a certain percentage by melting sources, through roughing, in roll, finish rolling,
Spinning, air-cooled or water cooling etc. forms wire rod, during forming wire rod, in order to improve the tensile strength of wire rod, improves production speed
Degree will at least be formd in rebar surface by air-cooled, water cooling or oil processes, the thermoforming reinforcing bar by cold treatment such as cold
A kind of stress, in addition, the tensile strength of wire rod is in 400MPa or so.
In order to further increase rate elongation and tensile strength for reinforcing bar product needed for high-speed rail construction, to current
Production equipment is analyzed and researched, and is analyzed the existing cold rolled reinforcing bar technique including patented technology, herein
On the basis of carried out analysis of experiments.
Before the test, the retrieval in terms of following patent has been carried out, has been analyzed.
Application No. is 00122927.3 patents to provide a kind of manufacturing method of steel wire with low tension prestress and high strength, work
Skill step is de-scaling, cold rolling, hot candied spiral forming, Stabilizing Heat Treatment process.
Patent No. 200410013658.2 is to provide the high strength low relaxed cold-rolled ribbed indented bar of one kind and production
Method and special production line, production technology are the processes such as uncoiling, unwrapping wire, de-scaling, cold rolling, indentation, heat treatment, take-up.
Application No. is 201510945123.7 patents to provide a kind of cold rolled reinforcing bar processing technology, the production technology, packet
It includes step: 1) gren rod being sent into the cold rolling of milling train unit tube reducing and generate rib line；2) to the heat in step 1) Jing Guo cold rolling
Wire rod is rolled to be heat-treated；3) it cutting to length and will be collected after the gren rod of Overheating Treatment aligning in step 2).Fig. 7 is
Representative existing production line, it may be assumed that Process configuration disclosed in the patent.
Patent No. 201610669407.2 provides a kind of high ductility cold-rolled ribbed bars processing method, technique are as follows:
De-scaling, molding, heat treatment, cools down tube reducing, and application No. is 201810818442 .5, to disclose a kind of cold rolled reinforcing bar raw
Production method, method include:
Step 1: pouring molten steel in punching block in steel stove, hot-rolled reinforced bar is formed after sizing is cooling；
Step 2: introducing milling train and carrying out cold rolling, cold twisting the reinforcing bar dephosphorization in step 1；
Step 3: the reinforcing bar in step 2 after cold rolling, cold twisting is eliminated cold rolling stress by stress elimination machine；
Step 4: the reinforcing bar for eliminating cold rolling stress in step 4 is introduced complete set of equipments, derusted, straightening, winding storage.
Discovery in from the above all allows for steel after processing when to wire rod using cold-rolling process production Ribbed Bar
It is intrinsic to be not bound with product purchasing for the factory index of the products such as grain structure, tensile strength, yield strength, the elongation of muscle
Characteristic is produced.In other words: in the prior art, the characteristic of product is heat-treated after cold rolling to meet and produce
The characteristic of product does not account for the characteristic of product before processing, in fact, in cold rolling production, wire rod as raw material directly into
Row cold rolling processing, can make the crystal phase disorganization of original wire rod, reduce its plasticity, also reduce reinforcing bar to a certain extent
Intensity, even if heating in heat treatment below, still, since the temperature of heat treatment much not as good as manufacturing wire rod originally
When wire rod forming temperature, therefore, the reinforcing bar being heat-treated after cold rolling is processed be difficult to be restored to originally wire rod quenching treatment after
Grain structure, in addition, in order to improve the production efficiency, the cooling rate of general wire rod is all very fast due in wire rod is heat-treated,
Will quickly it cool down by quenching treatment, although improving the tensile strength of reinforcing bar, in contrast its rate elongation wants low,
It is, if for high-speed rail overpass, for non-fragment orbit, tensile strength, yield strength to reinforcing bar, especially rate elongation and general
Building requirements are different, not only require the tensile strength increased, yield strength for the reinforcing bar in high-speed rail construction, but also more demanding
Rate elongation, if directly carrying out cold rolling processing on original wire rod, even Ribbed Bar molding the later period be heat-treated,
Its tensile strength and rate elongation are also that hardly possible is further promoted on the basis of existing cold rolling technology, how existing
Tensile strength and elongation percentage are further increased on the basis of product index, are the new projects that cold rolled reinforcing bar producer faces.
Summary of the invention
For the spy more demanding simultaneously of tensile strength, rate elongation to reinforcing bar in high-speed rail overpass, non-fragment orbit construction
Point, the present invention consider the moulding process of wire rod, it is contemplated that the tensile strength that wire rod has, Gao Yanchang feature provide one kind
The production system and production method of high ductility Ribbed Bar, purpose carry out secondary cold-rolling to reinforcing bar at a certain temperature and add
Work is reduced to the crystal phase disorganization degree of wire rod during secondary cold-rolling, the hardness having when mitigating steel bar cold rolling, thus
Required cold rolling power when cold rolling can be reduced, it is energy saving, by secondary heat treatment, it is further ensured that tensile strength and rate elongation.
The technical scheme is that a kind of production system of high ductility Ribbed Bar, the production system includes unwrapping wire
Machine, descaling mill, rolling reducing mill, loop, rolling pressure rib machine, annealing device, admission machine and production lane controller, the life
Production system includes at least two kinds of rolling equipments and two kinds of annealing devices, and two kinds of rolling equipments include rolling reducing mill and rolling pressure
Rib machine, two kinds of annealing devices include an annealing device and secondary heat treatment device, an annealing device and second heat
Processing unit is separately positioned in the front-rear position of rolling pressure rib machine, after an annealing device and secondary heat treatment device
It is respectively arranged with temperature monitor, an annealing device, secondary heat treatment temperature and detector and production lane controller connect
It connects.
A kind of production method of high ductility Ribbed Bar, including unwrapping wire process, de-scaling process, rolling tube reducing process, loop,
Rolling pressure rib process, heat treatment procedure, wire-drawing process, it is characterised in that: the Ribbed Bar is in Ribbed Bar pressure rolling production line
In, heat treatment procedure twice is included at least, wherein before a heat treatment procedure is located at rolling pressure rib process, secondary heat treatment process
After rolling pressure rib process, one time heat treatment procedure is the pre-heat treatment process, and the preheating temperature of the pre-heat treatment process is lower than
200 °C, the heat treatment temperature of secondary heat treatment process is lower than 180-700 °C, and the diameter of wire rod reinforcing bar reduces 18-28% after pressure rolling,
The yield strength and tension for the Ribbed Bar that production method by the way that the Ribbed Bar of a heat treatment procedure is arranged is produced are strong
Degree is respectively in 550-600MPa and 610-700MPa, and elongation is in 13-18%；
Further, the rolling reducing mill includes the rolling reducing mill of the rolling reducing mill and up and down direction of left and right directions, described
Rolling pressure rib machine includes the rolling pressure rib machine of left and right directions and rib machine, rolling reducing mill and rolling pressure rib are pressed in the rolling of up and down direction
Pairs of idler wheel is provided on machine, the pairs of idler wheel of the last one rolling pressure rib machine is the pairs of mould with pressure rib and/or indentation
Has idler wheel；
Further, orienting device, the orienting device are provided with before the rolling reducing mill, rolling pressure rib machine, annealing device
For one or more pairs of upper and lower and/or left and right directions orientation idler wheels either horizontal orientation casing, reducing mill and rolling are rolled
The loop and armature wire transfer for adjusting line loose degree are additionally provided between pressure rib machine；
Further, an annealing device and secondary heat treatment device are made of multiple high frequencies and intermediate frequency coil respectively, more
The mobile stabilizer-wheels of multiple reinforcing bars, the roller shaft of the mobile stabilizer-wheels of multiple reinforcing bars are respectively arranged with before a high frequency and intermediate frequency coil
For hollow shaft, hollow shaft is interior to be arranged cooling water；
Further, described organize with last of pressure rib and/or indentation is provided with V-type groove among pairs of mold idler wheel periphery,
The V-type mouth of a pair of of idler wheel is oppositely arranged, and two sides are recess arc-shaped, two circular arcs that are recessed in V-type groove in V-type groove
It is 90 ° that string, which intersects apex angle, the willow leaf shape inclined ribs slot being arranged alternately with each other there are two settings in V-type groove, and string intersection apex angle is in
Recess, the angle between two willow leaf shape inclined ribs slot rib length direction medium lines and mold idler wheel outer peripheral surface is respectively in 100-
130 °, 130-145 ° are provided with recess on the spue line of string intersection apex angle is formed in V-type groove circumference and upper bottom roller
Portion, recessed portion depth are less than 2mm, and the rib length direction medium line spacing of two willow leaf shape inclined ribs slots is less than 10mm, upper bottom roller
The inclination angle of two interior willow leaf shape inclined ribs slots differs 180 °；
Further, the transfer is 90 degree of transfers of tube reducing reinforcing bar, and transfer is made of multiple arch holes, before
The string in multiple arch holes gradually switchs to vertical direction by horizontal direction backward, and arch hole is arranged on wearing plate；
Further, the wire rod gauge or diameter of wire is less than 15mm, and high ductility Ribbed Bar includes:
1), wire rod is arranged on paying out machine, and leads to descaling mill；
2), clast is aoxidized using descaling mill removal rebar surface；
3) rolling tube reducing, is carried out to armature wire using rolling reducing mill, rolling tube reducing includes the rolling tube reducing work of left and right directions
The rolling tube reducing process of sequence and up and down direction；
4) the pre-heat treatment, is carried out to the armature wire after rolling tube reducing using an annealing device；
5) temperature detection, is carried out to a heat treatment procedure treated wire rod, and by information feedback to production lane controller, it is raw
Multiple radio-frequency generator temperature are adjusted in producing line controller；
6), armature wire is rolled using rolling pressure rib machine, while carrying out rolling pressure rib and/or indentation, rolling pressure rib and/
Or indentation includes the rolling process of left and right directions and the rolling pressure rib and/or indentation process of up and down direction, rib and/or quarter are pressed in rolling
Trace process is located at the last of rolling pressure rib machine；
7), the secondary heat treatment device carries out secondary heat treatment, secondary heat treatment process to the armature wire after rolling tube reducing
Including heating, forcing cooling and natural cooling operation break-down；
8) it is detected using temperature of the temperature monitor to multiple intermediate frequency coil ends Ribbed Bar in secondary heat treatment process,
Production lane controller is adjusted the temperature of multiple intermediate frequency heaters according to detection temperature；
9), Ribbed Bar is wound using admission machine, Ribbed Bar is formed and coils, carry out multiple Ribbed Bar receipts when necessary
Switching between line machine；
Further, a heat treatment procedure is high frequency coil heating, and the secondary heat treatment process is intermediate frequency coil heating,
The temperature of multiple high frequency coils and intermediate frequency coil is gradually increased respectively, the heating rate of a heat treatment procedure 110-200 °C/
Second, the heating rate of secondary heat treatment process is at 120-150 °C/second；
Further, the cooling cooling rate of pressure in the secondary heat treatment process is at 10-30 °C/second, the forced cooling time
It is 2 seconds.
By the way that primary preheating is arranged after rolling tube reducing, although too much influence will not be brought to the overall permanence of reinforcing bar,
But the yield strength under cold rolling situation can be maintained, and it can enough alleviate the quenching intensity of wire rod reinforcing bar to a certain extent, it can
The defect under rolling reducing mill Cold Rolled Strip to steel caused crystal phase in plastic deformation, Er Qieneng are reduced to a certain extent
Enough crystal phase defects reduced in then rolling pressure rib process facilitate the molding during rolling pressure rib by once preheating, can
Required power in rolling pressure rib is reduced to a certain extent, reduces rolling pressure rib molding difficulty, energy saving, meanwhile, secondary
Can continue to heat up on the basis of primary heat treatment in heat treatment process, lower than 200 °C at a temperature of primary preheat not only
Bring stress in wire rod manufacture can be discharged, and in the case where not influencing wire rod and Ribbed Bar essential characteristics, is improved
The minimum temperature when heating of secondary heat treatment shortens the heating-up time of secondary heat treatment, accelerates the speed of secondary heat treatment；It is logical
It crosses and armature wire transfer is set between rolling reducing mill and rolling pressure rib machine, ovalisation knot can will be rolled after tube reducing
The wire rod of structure continues opposite circular configuration rolling after being rotated by 90 °；By using the present invention can at a certain temperature to reinforcing bar into
Row cold rolling processing mitigates to the crystal phase disorganization degree of wire rod in cold-rolled process, the hardness having when reducing steel bar cold rolling,
It is energy saving to which required cold rolling power when cold rolling can be reduced, by secondary heat treatment, further increase tensile strength and extension
Rate.
Detailed description of the invention
The structural schematic diagram of Fig. 1 production system of the present invention.
The structural schematic diagram in multiple arch holes in Fig. 2 transfer.
The structural schematic diagram of the single annealing device of Fig. 3.
Last of Fig. 4 pressure rib and/or indentation organize the constitution water in pairs of mold idler wheel in an idler wheel periphery V-type groove
Floor map.
Last of Fig. 5 pressure rib and/or indentation organize the knot in pairs of mold idler wheel in another idler wheel periphery V-type groove
Structure horizontal plane schematic diagram.
Last of Fig. 6 pressure rib and/or indentation organize the longitudinal profile schematic diagram of pairs of mold idler wheel.
Fig. 7 representative existing production line.
Specific embodiment
The specific technical solution of the present invention is described in detail in conjunction with the embodiments referring to the drawings.In description below
In, front-rear direction refers to the flow direction of reinforcing bar, and left and right directions refers to two sides of reinforcing steel bar production line direction of advance, and up and down direction is
Refer to the up and down direction in vertical direction.
Label in attached drawing respectively represents: 10- paying out machine, 11a- orientation sleeve one, 11- descaling mill, 12a- orient idler wheel
One, the rolling reducing mill, 13a- of 12- up and down direction orient sleeve two, the rolling reducing mill of 13- left and right directions, the reinforcing bar side 14a-
It is left to one, 14 annealing device of stabilizer-wheels, 15- temperature monitor, 16- transfer, 17a- orientation sleeve three, 17-
Rib machine is pressed in the rolling of the rolling pressure rib machine, 18a- orientation idler wheel two, 18- up and down direction of right direction, and rolling is stablized in 19a- reinforcing bar direction
Two, 20a- wire rod reinforcing bar, 20b- Ribbed Bar, 21- flying shearing machine, 22- transmission track switching machine, 23a- admission machine one, 23b is taken turns to receive
Line machine two, 24- wearing plate, 25- arch hole, 26- high frequency or medium-frequency generator, 27- heating coil, 27a- insulation cover, 28- are mobile
Stabilizer-wheels, 29- hollow shaft cooling water pipe, 30a- V-type groove side one, 30b-V-type groove side two, 31a- willow leaf shape incline
Diagonal rib slot one, 31b- willow leaf shape inclined ribs slot two, 32- medium line, 33- apex angle recessed portion, 34- mold recessed portion.
The technical scheme is that a kind of production system of high ductility Ribbed Bar 20b, Fig. 1 is production of the present invention
The structural schematic diagram of system.The production system includes paying out machine 10 in the prior art, descaling mill 11, rolling reducing mill, work
Set, rolling pressure rib machine, annealing device, admission machine and production lane controller, the production system include at least two kinds of rollings
Equipment and two kinds of annealing devices, two kinds of rolling equipments include rolling reducing mill and rolling pressure rib machine, two kinds of annealing device packets
An annealing device 14 and secondary heat treatment device are included, an annealing device 14 and secondary heat treatment device are separately positioned on
In the front-rear position of rolling pressure rib machine, temperature inspection is respectively arranged with after an annealing device 14 and secondary heat treatment device
Instrument 15 is surveyed, an annealing device 14, secondary heat treatment temperature and detector are connect with production lane controller.
A kind of production method of high ductility Ribbed Bar 20b, including unwrapping wire process, de-scaling process roll tube reducing process, work
Set, rolling pressure rib process, heat treatment procedure, wire-drawing process, the Ribbed Bar 20b are included at least twice during pressure rolling
Heat treatment procedure, wherein secondary heat treatment process is located at rolling pressure rib work before a heat treatment procedure is located at rolling pressure rib process
After sequence, a heat treatment procedure is the pre-heat treatment process, and the preheating temperature of the pre-heat treatment process is lower than 200 °C, secondary heat treatment
The diameter of wire rod reinforcing bar 20a reduces 18-28% after lower than the 180-700 °C pressure rolling of the heat treatment temperature of process, by the way that primary heat is arranged
The yield strength and tensile strength for the Ribbed Bar 20b that the production method of the Ribbed Bar 20b for the treatment of process is produced exist respectively
550-600MPa and 610-700MPa, elongation is in 14-18%.
Table 1, the embodiment using production line of the present invention compared with existing product of production line characteristic
The rolling reducing mill includes the rolling reducing mill 12 of the rolling reducing mill 13 and up and down direction of left and right directions, the rolling
Pressure rib machine includes the rolling pressure rib machine 17 of left and right directions and the rolling pressure rib machine 18 of up and down direction, rolls reducing mill and rolling pressure rib
Pairs of idler wheel is provided on machine, the pairs of idler wheel of the last one rolling pressure rib machine is the pairs of mould with pressure rib and/or indentation
Has idler wheel.
It is provided with orienting device before the rolling reducing mill, rolling pressure rib machine, annealing device, the orienting device is one
Pair or it is multipair up and down and/or left and right directions positioning roller either horizontal locating sleeve, wherein 11a be abutment sleeve one,
Positioned at 11 front of descaling mill, one 12a of abutment sleeve is the horn sleeve barrel structure of horizontal direction, this is because in the process of laying the line
Wire rod wire rod has shaking phenomenon, can be settled out shaking phenomenon using this structure；12a is positioning roller one, is located at
Before the rolling reducing mill 12 of the up and down direction of up and down direction；13a is abutment sleeve two, positioned at the rolling tube reducing of left and right directions
Before machine 13；14a is reinforcing bar direction stabilizer-wheels one, is located in an annealing device 14 before each high frequency heating coil；17a is
Abutment sleeve three, before the rolling pressure rib machine 17 of left and right directions；18a is positioning roller two, positioned at the rolling pressure of up and down direction
Before rib machine 18；19a is reinforcing bar direction stabilizer-wheels two, is located in secondary heat treatment device before each medium-frequency heating coil.
Setting is additionally provided with loop and reinforcing bar for adjusting line loose degree between rolling reducing mill and rolling pressure rib machine
Wire rod transfer 16.
Annealing device 14 and secondary heat treatment device are made of multiple high frequencies and intermediate frequency coil respectively, Fig. 3
It is the structural schematic diagram of single annealing device.Primary heating device and second heating apparatus are filled by multiple single heat treatments respectively
Set composition, as needed by the heating coil 27 of single annealing device arrange it is into a line be respectively controlled, in high frequency or
Heating temperature is set in medium-frequency generator 26, and is adjusted accordingly using controller, 27a is the insulation cover of heating device,
The mobile stabilizer-wheels 28, Duo Gegang of multiple reinforcing bars are respectively arranged with before the multiple high frequencies and medium-frequency heating coil 27 that are arranged in a row
The roller shaft of the mobile stabilizer-wheels 28 of muscle is hollow shaft, and cooling water is arranged in hollow shaft, and 29 be hollow shaft cooling water pipe, cooling water
It is circulated in multiple hollow shaft cooling water pipes, prevents roller shaft expanded by heating from obstructing the rolling of idler wheel with this.
Last of Fig. 4 pressure rib and/or indentation organize the constitution water in pairs of mold idler wheel in an idler wheel periphery V-type groove
Floor map.Last of Fig. 5 pressure rib and/or indentation are organized in pairs of mold idler wheel in another idler wheel periphery V-type groove
Constitution water floor map.Last of Fig. 6 pressure rib and/or indentation organize the longitudinal profile schematic diagram of pairs of mold idler wheel.It is described
It is provided with V-type groove among last group of idler wheel periphery in pairs of mold idler wheel with pressure rib and/or indentation, a pair of of idler wheel
V-type mouth is oppositely arranged, and two sides of V-type groove are recess arc-shaped, and two sides of V-type groove are V-type groove side one
Two 30b of 30a and V-type groove side, the string intersection apex angle of two recess circular arcs is 90 ° in V-type groove, is provided in V-type groove
Two willow leaf shape inclined ribs slots being arranged alternately with each other, specially one 31a of willow leaf shape inclined ribs slot and willow leaf shape inclined ribs slot two
31b, string intersection apex angle it is recessed, 33 be apex angle recessed portion, the rib length direction medium line 32 of two willow leaf shape inclined ribs slots with
Angle between mold idler wheel outer peripheral surface is respectively in 100-130 °, 130-145 °, the rib length direction of two willow leaf shape inclined ribs slots
32 depth of medium line is maximum, is all provided on the spue line of string intersection apex angle is formed in V-type groove circumference and upper bottom roller
It is equipped with recessed portion, 34 be molding recessed portion, and recessed portion depth is less than 2mm, among the rib length direction of two willow leaf shape inclined ribs slots
Line spacing is less than 10mm, and the inclination angle of two willow leaf shape inclined ribs slots in upper bottom roller differs 180 °.
The reinforcing bar main body processed using this roller die is the tetrahedron that four sides is arcuation protrusion, and diagonal section is protruded,
Two therein diagonal height, diagonal protruding portion and two inclined willow leaf shape inclined ribs phases consistent with willow leaf shape inclined ribs height
It hands over, other two diagonal protrusion has molding recessed portion to be formed in independent convex shape, does not intersect with willow leaf shape inclined ribs.
The temperature monitor 15 is infrared temperature detector 15.
The transfer 16 is 90 degree of transfers 16 of tube reducing reinforcing bar, and Fig. 2 is multiple arch holes in transfer
Structural schematic diagram.Transfer 16 is made of multiple arch hole 25a, and the string of multiple arch hole 25a is by horizontal direction from front to back
Gradually switch to vertical direction, arch hole 25a is arranged on wearing plate 24.
The wire rod gauge or diameter of wire is less than 15mm, and high ductility Ribbed Bar 20b's includes:
1), wire rod is arranged on paying out machine 10, and leads to descaling mill 11；
2) rebar surface, which is removed, using descaling mill 11 aoxidizes clast；
3) rolling tube reducing, is carried out to armature wire using rolling reducing mill, rolling tube reducing includes the rolling tube reducing work of left and right directions
The rolling tube reducing process of sequence and up and down direction；
4), the pre-heat treatment is carried out using the armature wire after 14 pairs of an annealing device rolling tube reducings；
5) temperature detection, is carried out to a heat treatment procedure treated wire rod, and by information feedback to production lane controller, it is raw
Multiple radio-frequency generator temperature are adjusted in producing line controller；
6), armature wire is rolled using rolling pressure rib machine, while carrying out rolling pressure rib and/or indentation, rolling pressure rib and/
Or indentation includes the rolling process of left and right directions and the rolling pressure rib and/or indentation process of up and down direction, rib and/or quarter are pressed in rolling
Trace process is located at the last of rolling pressure rib machine；
7), the secondary heat treatment device carries out secondary heat treatment, secondary heat treatment process to the armature wire after rolling tube reducing
Including heating, forcing cooling and natural cooling operation break-down；
8) it is carried out using temperature of the temperature monitor 15 to intermediate frequency coil end Ribbed Bar 20b multiple in secondary heat treatment process
Detection, production lane controller are adjusted the temperature of multiple intermediate frequency heaters according to detection temperature；
9), Ribbed Bar 20b is wound using admission machine, Ribbed Bar 20b is formed and coils, carry out the prior art when necessary
In multiple Ribbed Bar 20b admission machines before be provided with flying shearing machine 21 and transmission track switching machine 22, in production lane controller
Control downloads and is wound switching between multiple admission machines.
In the present embodiment, it is provided with one 23a of admission machine, two 23b of admission machine, is switched by flying shearing machine 21 and transmission track
Machine 22 winds Ribbed Bar 20b on one 23a of admission machine, two 23b of admission machine in turn.
Fig. 6 is the structural schematic diagram of single annealing device.In annealing device, there are multiple such heat treatment dresses
Composition is set, a heat treatment procedure is high frequency coil heating, and the secondary heat treatment process is intermediate frequency coil heating, multiple
The temperature of high frequency coil and intermediate frequency coil is gradually increased respectively, the heating rate of a heat treatment procedure at 110-200 °C/second,
The heating rate of secondary heat treatment process is at 120-150 °C/second.
For the cooling rate of pressure cooling in the secondary heat treatment process at 10-30 °C/second, the forced cooling time is 2
Second.
In this production line, it is to increase the control being once heat-treated in controller in existing production line, sets control
Temperature processed increases 5 groups of high frequency heating coils in the present embodiment, and 5 groups of high frequency heating coils are occurred by the high frequency individually controlled
Device control, 5 groups of radio-frequency generators are electrically connected with high frequency coil respectively, meanwhile, 5 groups of radio-frequency generators are again electric with production lane controller
Connection, heating power are adjusted by the controller of production line, the power of each heating coil are adjusted respectively, the transmission of reinforcing bar
Speed is directly proportional to the heating power of radio-frequency generator, at the same time, reduces in original production line and rolls in two kinds of rolling equipments
The pressure setting of system pressure rib machine, reduces 7% draught pressure in the present embodiment, in addition, in the present invention, with existing production line
It compares, reduces the temperature of secondary heat treatment.
By the way that primary preheating is arranged after rolling tube reducing, although too much influence will not be brought to the overall permanence of reinforcing bar,
But the yield strength under cold rolling situation can be maintained, and it can enough alleviate the quenching intensity of wire rod reinforcing bar to a certain extent, it can
The defect under rolling reducing mill Cold Rolled Strip to steel caused crystal phase in plastic deformation, Er Qieneng are reduced to a certain extent
Enough crystal phase defects reduced in then rolling pressure rib process facilitate the molding during rolling pressure rib by once preheating, can
Required power in rolling pressure rib is reduced to a certain extent, reduces rolling pressure rib molding difficulty, energy saving, meanwhile, secondary
Can continue to heat up on the basis of primary heat treatment in heat treatment process, lower than 200 °C at a temperature of primary preheat not only
Bring stress in wire rod manufacture can be discharged, and in the case where not influencing wire rod and Ribbed Bar 20b essential characteristics, is mentioned
The minimum temperature when heating of high secondary heat treatment shortens the heating-up time of secondary heat treatment, accelerates the speed of secondary heat treatment；
By the way that armature wire transfer 16 is arranged between rolling reducing mill and rolling pressure rib machine, ellipse can will be rolled into after tube reducing
The wire rod of shape structure continues opposite circular configuration rolling after being rotated by 90 °；By utilizing the present invention can be at a certain temperature to steel
Muscle carries out cold rolling processing, mitigates in cold-rolled process to the crystal phase disorganization degree of wire rod, has when reducing steel bar cold rolling
Hardness, so that required cold rolling power when cold rolling can be reduced, it is energy saving, by secondary heat treatment, further increase tensile strength
And rate elongation.
Claims (10)
1. a kind of production system of high ductility Ribbed Bar, including paying out machine, descaling mill, rolling reducing mill, loop, rolling pressure rib
Machine, annealing device, admission machine and production lane controller, it is characterised in that: the production system includes at least two kinds of rollings
Equipment and two kinds of annealing devices, two kinds of rolling equipments include rolling reducing mill and rolling pressure rib machine, two kinds of annealing device packets
An annealing device and secondary heat treatment device are included, an annealing device and secondary heat treatment device are separately positioned on rolling
In the front-rear position for pressing rib machine, it is respectively arranged with temperature monitor after an annealing device and secondary heat treatment device,
Annealing device, secondary heat treatment temperature and temperature monitor are also connect with production lane controller.
2. a kind of production method of high ductility Ribbed Bar, including unwrapping wire process, de-scaling process, rolling tube reducing process, are rolled loop
System pressure rib process, heat treatment procedure, wire-drawing process, it is characterised in that: the Ribbed Bar in Ribbed Bar pressure rolling production line,
Including at least heat treatment procedure twice, wherein before a heat treatment procedure is located at rolling pressure rib process, secondary heat treatment process position
After rib process is pressed in rolling, a heat treatment procedure is the pre-heat treatment process, and the preheating temperature of the pre-heat treatment process is lower than 200 °
The heat treatment temperature of C, secondary heat treatment process are lower than 180-700 °C, and the diameter of wire rod reinforcing bar reduces 18-28% after pressure rolling, pass through
The yield strength and tensile strength point of the Ribbed Bar that the production method of the Ribbed Bar of heat treatment procedure is produced are set
Not in 550-600MPa and 610-700MPa, elongation is in 13-18%.
3. a kind of production system of high ductility Ribbed Bar according to claim 1, it is characterised in that: the rolling tube reducing
Machine includes the rolling reducing mill of the rolling reducing mill and up and down direction of left and right directions, and the rolling pressure rib machine includes left and right directions
Rib machine is pressed in the rolling of rolling pressure rib machine and up and down direction, is provided with pairs of idler wheel on rolling reducing mill and rolling pressure rib machine, most
The pairs of idler wheel of the latter rolling pressure rib machine is the pairs of mold idler wheel with pressure rib and/or indentation.
4. a kind of production system of high ductility Ribbed Bar according to claim 1, it is characterised in that: the rolling tube reducing
Orienting device is provided with before machine, rolling pressure rib machine, annealing device, the orienting device is one or more pairs of up and down and/or left
The orientation idler wheel of right direction either horizontal orientation casing is rolled and is additionally provided between reducing mill and rolling pressure rib machine for adjusting
The loop and armature wire transfer of nodel line material slackness.
5. a kind of production system of high ductility Ribbed Bar according to claim 1, it is characterised in that: at the primary heat
Reason device and secondary heat treatment device are made of multiple high frequencies and intermediate frequency coil respectively, are set respectively before multiple high frequencies and intermediate frequency coil
The mobile stabilizer-wheels of multiple reinforcing bars are equipped with, the roller shaft of the mobile stabilizer-wheels of multiple reinforcing bars is hollow shaft, and setting is cold in hollow shaft
But water.
6. a kind of production system of high ductility Ribbed Bar according to claim 3, it is characterised in that: described with pressure rib
And/or it is provided with V-type groove among last group pairs of mold idler wheel periphery of indentation, the V-type mouth of a pair of of idler wheel is oppositely arranged,
Two sides are recess arc-shaped in V-type groove, and the string intersection apex angle of two recess circular arcs is 90 ° in V-type groove, V-type groove
There are two the willow leaf shape inclined ribs slots being arranged alternately with each other for interior setting, and string intersection apex angle is recessed, two willow leaf shape inclined ribs
Angle between the slot rib length direction medium line and mold idler wheel outer peripheral surface string in 100-130 °, 130-145 °, V-type groove respectively
Recessed portion is provided on the spue line of circumference and upper bottom roller that intersection apex angle is formed, recessed portion depth is less than 2mm, and two
The rib length direction medium line spacing of willow leaf shape inclined ribs slot is less than 10mm, and two willow leaf shape inclined ribs slots in upper bottom roller incline
Oblique angle differs 180 °.
7. a kind of production system of high ductility Ribbed Bar according to claim 4, it is characterised in that: the transfer
For 90 degree of transfers of tube reducing reinforcing bar, transfer is made of multiple arch holes, and the string in multiple arch holes is by water from front to back
Square to vertical direction is gradually switched to, arch hole is arranged on wearing plate.
8. a kind of production method of high ductility Ribbed Bar according to claim 2, it is characterised in that: the wire rod wire rod
Diameter is less than 15mm, and the production method of high ductility Ribbed Bar includes:
1), wire rod is arranged on paying out machine, and leads to descaling mill；
2), clast is aoxidized using descaling mill removal rebar surface；
3) rolling tube reducing, is carried out to armature wire using rolling reducing mill, rolling tube reducing includes the rolling tube reducing work of left and right directions
The rolling tube reducing process of sequence and up and down direction；
4), an annealing device carries out the pre-heat treatment to the armature wire after rolling tube reducing；
5) temperature detection, is carried out to a heat treatment procedure treated wire rod, and by information feedback to production lane controller, it is raw
Multiple radio-frequency generator temperature are adjusted in producing line controller；
6), armature wire is rolled using rolling pressure rib machine, while carrying out rolling pressure rib and/or indentation, rolling pressure rib and/
Or indentation includes the rolling process of left and right directions and the rolling pressure rib and/or indentation process of up and down direction, rib and/or quarter are pressed in rolling
Trace process is located at the last of rolling pressure rib machine；
7), the secondary heat treatment device carries out secondary heat treatment, secondary heat treatment process to the armature wire after rolling tube reducing
Including heating, forcing cooling and natural cooling operation break-down；
8) it is detected using temperature of the temperature monitor to multiple intermediate frequency coil ends Ribbed Bar in secondary heat treatment process,
Production lane controller is adjusted the temperature of multiple intermediate frequency heaters according to detection temperature；
9), Ribbed Bar is wound using admission machine, Ribbed Bar is formed and coils, carry out multiple Ribbed Bar receipts when necessary
Switching between line machine.
9. a kind of production system of high ductility Ribbed Bar according to claim 2, it is characterised in that: at the primary heat
Science and engineering sequence is high frequency coil heating, and the secondary heat treatment process is intermediate frequency coil heating, multiple high frequency coils and intermediate frequency coil
Temperature be gradually increased respectively, the heating rate of a heat treatment procedure is at 110-200 °C/second, the liter of secondary heat treatment process
Warm speed is at 120-150 °C/second.
10. a kind of production system of high ductility Ribbed Bar according to claim 6, it is characterised in that: the second heat
For the cooling rate of pressure cooling in treatment process at 10-30 °s/sec, the forced cooling time is 2 seconds.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186929.0A CN109877154A (en) | 2019-03-13 | 2019-03-13 | A kind of production system and production method of high ductility Ribbed Bar |
| CN202010125743.7A CN111097796B (en) | 2019-03-13 | 2020-02-27 | Production system and production method of high-ductility ribbed steel bar |
| CN202020220239.0U CN211679299U (en) | 2019-03-13 | 2020-02-27 | Production system of ribbed steel bar and ribbed steel bar |
| CN202010125079.6A CN111215448A (en) | 2019-03-13 | 2020-02-27 | Production system and production method of ribbed steel bar and ribbed steel bar |
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| CN201910186929.0A CN109877154A (en) | 2019-03-13 | 2019-03-13 | A kind of production system and production method of high ductility Ribbed Bar |
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| CN202020220239.0U Active CN211679299U (en) | 2019-03-13 | 2020-02-27 | Production system of ribbed steel bar and ribbed steel bar |
| CN202010125079.6A Pending CN111215448A (en) | 2019-03-13 | 2020-02-27 | Production system and production method of ribbed steel bar and ribbed steel bar |
| CN202010125743.7A Active CN111097796B (en) | 2019-03-13 | 2020-02-27 | Production system and production method of high-ductility ribbed steel bar |
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| CN202010125079.6A Pending CN111215448A (en) | 2019-03-13 | 2020-02-27 | Production system and production method of ribbed steel bar and ribbed steel bar |
| CN202010125743.7A Active CN111097796B (en) | 2019-03-13 | 2020-02-27 | Production system and production method of high-ductility ribbed steel bar |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109702032A (en) * | 2018-12-27 | 2019-05-03 | 邵阳高华工贸实业有限公司 | A kind of double cold rolled reinforcing steel bar with ribs production method and production equipment |
| CN110404960A (en) * | 2019-06-28 | 2019-11-05 | 中冶华天工程技术有限公司 | Accelerate cooling common rolling bar+finishing integral system based on tissue isothermal transformation+low temperature |
| CN111624460A (en) * | 2020-06-28 | 2020-09-04 | 西安奕斯伟硅片技术有限公司 | Method for detecting defect distribution area of monocrystalline silicon |
| CN112658046A (en) * | 2020-12-08 | 2021-04-16 | 安阳复星合力新材料股份有限公司 | Energy-saving production method of high-ductility cold-rolled steel bar |
| CN113210419A (en) * | 2021-05-08 | 2021-08-06 | 湖南三泰新材料股份有限公司 | Corrosion-resistant HRB600E composite anti-seismic steel bar and manufacturing method thereof |
| CN113430345A (en) * | 2021-06-30 | 2021-09-24 | 河南省鼎鼎实业有限公司 | Heat treatment equipment for producing high-ductility ribbed steel bars |
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| CN114653751B (en) * | 2022-03-16 | 2023-04-07 | 北京科技大学 | Preparation method of duplex stainless steel cold-rolled ribbed steel bar |
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| JPS5827004B2 (en) * | 1977-03-25 | 1983-06-07 | 新日本製鐵株式会社 | Continuous cold rolling equipment |
| CN1205254A (en) * | 1997-07-14 | 1999-01-20 | 郭静峰 | Prodn. tech. of cold-rolled deformed steel bar |
| DE102010031908A1 (en) * | 2010-07-22 | 2012-01-26 | Zenergy Power Gmbh | Method and device for heating a flat material |
| CN102218447B (en) * | 2011-05-05 | 2013-04-03 | 安阳市合力高速冷轧有限公司 | Production line for high-ductility cold-rolled ribbed bars |
| CN203227664U (en) * | 2013-03-29 | 2013-10-09 | 安阳市合力高速冷轧有限公司 | Production line for cold-rolled wire rods |
| CN209736331U (en) * | 2019-03-13 | 2019-12-06 | 河南省鼎鼎实业有限公司 | Production system of high-ductility ribbed steel bar |
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2019
- 2019-03-13 CN CN201910186929.0A patent/CN109877154A/en active Pending
-
2020
- 2020-02-27 CN CN202020220239.0U patent/CN211679299U/en active Active
- 2020-02-27 CN CN202010125079.6A patent/CN111215448A/en active Pending
- 2020-02-27 CN CN202010125743.7A patent/CN111097796B/en active Active
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| CN109702032A (en) * | 2018-12-27 | 2019-05-03 | 邵阳高华工贸实业有限公司 | A kind of double cold rolled reinforcing steel bar with ribs production method and production equipment |
| CN110404960A (en) * | 2019-06-28 | 2019-11-05 | 中冶华天工程技术有限公司 | Accelerate cooling common rolling bar+finishing integral system based on tissue isothermal transformation+low temperature |
| CN111624460A (en) * | 2020-06-28 | 2020-09-04 | 西安奕斯伟硅片技术有限公司 | Method for detecting defect distribution area of monocrystalline silicon |
| CN111624460B (en) * | 2020-06-28 | 2022-10-21 | 西安奕斯伟材料科技有限公司 | Method for detecting defect distribution area of monocrystalline silicon |
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| CN113430345A (en) * | 2021-06-30 | 2021-09-24 | 河南省鼎鼎实业有限公司 | Heat treatment equipment for producing high-ductility ribbed steel bars |
| CN114774668A (en) * | 2022-04-19 | 2022-07-22 | 河南省鼎鼎实业有限公司 | Ribbed steel bar short circuit heat treatment equipment and heating power supply thereof |
| CN115228935A (en) * | 2022-07-07 | 2022-10-25 | 中南大学 | Cold rolling process method for high-strength aluminum alloy ribbed thin-wall plate |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111097796A (en) | 2020-05-05 |
| CN111215448A (en) | 2020-06-02 |
| CN211679299U (en) | 2020-10-16 |
| CN111097796B (en) | 2021-02-26 |
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Application publication date: 20190614 |