CN105414237A - Steel section producing device and process thereof - Google Patents
Steel section producing device and process thereof Download PDFInfo
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- CN105414237A CN105414237A CN201510923612.2A CN201510923612A CN105414237A CN 105414237 A CN105414237 A CN 105414237A CN 201510923612 A CN201510923612 A CN 201510923612A CN 105414237 A CN105414237 A CN 105414237A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
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Abstract
The invention belongs to the field of steel rolling and particularly discloses a steel section producing device and a process thereof. The steel section producing device and the process thereof comprise the following components and steps: continuous casting billets, a heating furnace, a high pressure water descaling device, a first phi 750 two-roller reversing mill; a second phi 750 two-roller reversing mill, a high pressure water descaling device, a phi 650 two-roller continuous rolling set, a hot sawing machine, a cold bed, a straightener, a marshalling rack, a length-fixing cold sawing machine, a stacking rack, arranging and stacking and bundling. According to the steel section producing device and process thereof, an arrangement form of a heat accumulating type walking beam reheating furnace + the first phi 750 two-roller reversing mill + the second phi 750 two-roller reversing mill + phi 650 continuous mill x 3 is adopted, so that reasonable and efficient process design under a complex condition is achieved, not only the production requirement is met, but also the construction cost and the construction period are reduced, and site utilization factors are fully used. On the basis of achieving the goal of producing 50,000 tons of 10#-20# of equal-leg angle steel and 10/6.3#-20/12.5# of unequal-leg angle steel, the capacity for producing subsequent steel flats, creeper tread steel, fishplates and steel channels is also achieved.
Description
(1) technical field
The invention belongs to steel rolling field, particularly a kind of steel profile process units and technique thereof.
(2) background technology
Current domestic production work, angle, channel-section steel mainly adopt 50, the sixties push away steel heater+open-train mill arrangement form.Pusher-type furnace advantage is that equipment is simple, simple to operate, requires lower to billet quality (as bending etc.), because of high without heat storage capacity, energy consumption.Open-train mill major advantage is that equipment is simple, fast, the small investment of founding the factory, simple to operate, strong adaptability, product are versatile and flexible, be suitable for the production of small lot multi items, section configuration complex product, but open-train mill rigidity is low, adjustment difficulty, the product size precision of producing is not high, seed output and quality is lower, and description is restricted, be classified as national obsolete product.
Along with the fast development of the industries such as China's electric power, shipbuilding, shaped steel market demand increases year by year, continues employing and pushes away steel heater+open-train mill and arrange and produce shaped steel, affect that product cost is high, of poor quality, benefit is low, is unfavorable for raising product competitiveness.Recently design the product production line invested to build both at home and abroad generally to arrange according to walking beam furnace+three roller open-train mill or walking beam furnace+two-high reversing mill, these two kinds of designs have the shortcoming that factory building span is large, length is long, when construction place is by limited time, above-mentioned design just cannot realize.
(3) summary of the invention
The present invention in order to make up the deficiencies in the prior art, provide a kind of technological design rationally, equip rationally distributed, reduce construction cost, construction period, the steel profile process units making full use of place and technique thereof, solve in prior art and have problems.
The present invention is achieved through the following technical solutions:
A kind of steel profile process units, comprise the blank that sets gradually from front to back across, heating furnace across, main roll one across, main roll two across, main roll two across right side be provided with processing one across, processing one across rear side be provided with processing two across, processing two across left side be provided with cold bed across, processing two across right side be provided with finished product across;
Feeding skid is provided with across interior at blank;
Regenerative walking-beam furnace is provided with across interior at heating furnace;
Roll one and be provided with across interior the two-roller reversible milling train that two-roller reversible milling train that First roller diameter is 750mm (i.e. φ 750) and second roller diameter are 750mm (i.e. φ 750) main;
Roll two master and be provided with across interior the two roller Continuous mill train that roller diameter is 650mm (i.e. φ 650);
Straightener, marshalling stand is provided with across interior in processing one;
Scale cold sawing machine, piling stand, collecting frame is provided with across interior in processing two;
Hot-metal sawing machine, cold bed is provided with across interior at cold bed;
Finished product is across for storing up shaped steel finished product;
A high pressure water descaling device is respectively equipped with between regenerative walking-beam furnace and First φ 750 two-roller reversible milling train and between second φ 750 two-roller reversible milling train and φ 650 2 roller Continuous mill train.
The rear extension roller table of First φ 750 two-roller reversible milling train is provided with a switching device, described switching device comprises the moving stop driven by fluid pressure drive device be located at after First φ 750 two-roller reversible milling train on extension roller table, and the control device of described fluid pressure drive device is connected with the control system of First φ 750 two-roller reversible milling train.
Described cold bed is step-by-step movement and chain type compound cold bed, and cold bed body is made up of step rate section and fixing segment.
First φ 750 two-roller reversible milling train, second φ 750 two-roller reversible mill roll adopt the automatic roll change of roll change buggy, and φ 650 2 roller Continuous mill train adopts the roll change of complete machine frame substitute mode.
Described φ 650 2 roller Continuous mill train comprises the φ 650 2 roller tandem mill that three front and back set gradually.
Before φ 650 2 roller Continuous mill train, arrange that a set of card is disconnected to be cut.
Use a technique for above-mentioned steel profile process units, adopt following steps:
(1) qualified hot continuously cast material or cold continuous casting billet are sent into heating furnace across interior regenerative walking-beam furnace by blank across interior feeding skid, in regenerative walking-beam furnace, be heated to 900-1250 DEG C, obtain steel billet;
(2) steel billet being heated to 900-1250 DEG C is carried out first time high-pressure water descaling by high pressure water descaling device, the iron scale of removing billet surface;
(3) steel billet after first time de-scaling is delivered to main roll one and be rolled across interior First φ 750 two-roller reversible milling train;
(4) rolled piece that First φ 750 two-roller reversible milling train shuts out is delivered to main roll one and be rolled across interior second φ 750 two-roller reversible milling train;
(5) rolled piece that second φ 750 two-roller reversible milling train shuts out is carried out second time high-pressure water descaling by dephosphorize by high pressure water device, the iron scale of removing billet surface;
(6) delivered to by the rolled piece after second time de-scaling and main roll two and be rolled across interior φ 650 2 roller Continuous mill train, obtain shaped steel rolled piece, described φ 650 2 roller Continuous mill train comprises the φ 650 2 roller tandem mill that three front and back set gradually;
(7) the shaped steel rolled piece that φ 650 2 roller Continuous mill train shuts out is delivered to cold bed and carry out sawing work across the hot-metal sawing machine of interior cold bed entrance;
(8) the shaped steel rolled piece after sawing is delivered to cold bed and be cooled to less than 80 DEG C across interior cold bed;
(9) align being cooled to the shaped steel rolled piece of less than 80 DEG C to deliver to processing one across interior straightener;
(10) the shaped steel rolled piece after aligning is delivered to processing one and carry out collection row, marshalling across interior marshalling stand;
(11) the shaped steel product after marshalling is delivered to processing two across the commodity section bar cut lengths required for interior scale cold sawing machine sawing one-tenth, obtain steel profile.
The beneficial effect of steel profile process units of the present invention and technique thereof is:
(1) arrangement form of regenerative walking-beam furnace+φ 750 two-roller reversible milling train+φ 750 two-roller reversible milling train+φ 650 2 roller tandem mill × tri-is adopted, during limited in place condition, designed by reasonable process, achieve complex condition reasonable, efficient technological design, both need of production was met, reduce construction cost again, construction period, there is design design ingenious, equip rationally distributed advantage, decrease workshop building after employing by a relatively large margin to drop into, give full play to utilization of area coefficient, guaranteeing annual output 500000 tons of 10#-20# equal leg angles, on the target basis of 10/6.3# ~ 20/12.5# unequal angle, take into account follow-up band steel, crawler belt steel, fish platee, channel-section steel production capacity.
(2) high yield, low consumption, high, the energy-saving accumulation of heat walking beam heating furnace of automaticity is adopted, use step rate interleaving technique, eliminate traditional line type step rate and steel billet contacting points position constant all the time and form the shortcoming of larger water-cooled " black print ", staggered step rate can make " black print " temperature difference be down to 15 ~ 20 DEG C, provides prerequisite to the dimensional accuracy of final products.
(3) technology of twice high-pressure water descaling is adopted, main rolling line is arranged two cover high pressure water descaling devices, before furnace outlet φ 750 two-roller reversible milling train, a set of high pressure water descaling device is set, operating pressure 250bar, the iron scale of billet surface after coming out of the stove in order to removal; Before φ 650 2 roller Continuous mill train, a set of high pressure water descaling device is set, operating pressure 270bar, in order to remove clean by the iron scale that rolled piece surface again generates in the operation of rolling before final pass, improves the surface quality of product.
(4) adopt advanced reversible mill, φ 750 two-roller reversible milling train adopts the advanced advanced technology such as hydraulic pressure steel-jam proof, overload protection, hydro-cushion, effectively can ensure the rolling quality of rolled piece; Adopt automatic roll change, can ensure to complete roll change in 30min, shorten roll changing time.
(5) adopt three frame tandem mill groups, adopt three frame tandem mill groups, three frame tandem close-coupleds are arranged, can reduce floor space, investment reduction, reduce time rolling cycle.
(6) cold bed adopts step-by-step movement and chain type compound cold bed, adopts the large cold bed cooling technology of long chi combined type, improves rolled piece cooler environment, promotes rolled piece cooling quality, reduces investment simultaneously.
(7) adopt the advanced finishing process such as large-length cooling, long chi aligning, cold scale, improve the glacing flatness of product, dimensional accuracy, cross section quality, lumber recovery etc.
(4) accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is the structural representation of process units of the present invention;
Fig. 2 is the schematic flow sheet of production technology of the present invention.
In figure, 1 feeding skid, 2 regenerative walking-beam furnace, 3 First φ 750 two-roller reversible milling trains, 4 second φ 750 two-roller reversible milling trains, 5 φ 650 2 roller Continuous mill train, 6 straighteners, 7 marshalling stands, 8 scale cold sawing machines, 9 piling stands, 10 collecting frames, 11 hot-metal sawing machines, 12 cold beds, 13 high pressure water descaling devices, 14 moving stops, 15 control device.
(5) detailed description of the invention
For clearly demonstrating the technical characterstic of this programme, below by detailed description of the invention, and in conjunction with its accompanying drawing, the present invention will be described in detail.
Embodiment 1:
As shown in fig. 1, a kind of steel profile process units, comprise the blank that sets gradually from front to back across, heating furnace across, main roll one across, main roll two across, main roll two across right side be provided with processing one across, processing one across rear side be provided with processing two across, processing two across left side be provided with cold bed across, processing two across right side be provided with finished product across;
Feeding skid 1 is provided with across interior at blank;
Regenerative walking-beam furnace 2 is provided with across interior at heating furnace;
Roll one master and be provided with First φ 750 two-roller reversible milling train 3 and second φ 750 two-roller reversible milling train 4 across interior;
Roll two master and be provided with φ 650 2 roller Continuous mill train 5 across interior;
Straightener 6, marshalling stand 7 is provided with across interior in processing one;
Scale cold sawing machine 8, piling stand 9, collecting frame 10 is provided with across interior in processing two;
Hot-metal sawing machine 11, cold bed 12 is provided with across interior at cold bed;
Finished product is across for storing up shaped steel finished product;
A high pressure water descaling device 14 is respectively equipped with between regenerative walking-beam furnace 2 and First φ 750 two-roller reversible milling train 3 and between second φ 750 two-roller reversible milling train 4 and φ 650 2 roller Continuous mill train 5.
The rear extension roller table of First φ 750 two-roller reversible milling train 4 is provided with a switching device, described switching device comprises the moving stop 14 driven by fluid pressure drive device be located on the rear extension roller table of First φ 750 two-roller reversible milling train 4, the control device 15 of described fluid pressure drive device is connected with the control system of First φ 750 two-roller reversible milling train 3, when rolled piece shuttles back and forth rolling on First φ 750 two-roller reversible milling train 3, switching device is in closed condition, when detection system detects First φ 750 two-roller reversible milling train 3 last passage of rolling, trigger hydraulic-driven moving stop to open, rolled piece is allowed to enter second φ 750 two-roller reversible milling train 4.
Described cold bed 12 is step-by-step movement and chain type compound cold bed, and cold bed body is made up of step rate section and fixing segment, can improve rolled piece cooler environment, promotes rolled piece cooling quality, reduces investment simultaneously.Rolled piece is in step rate section, by step rate, it is transported forward, then direct being delivered to by rolled piece on fixing chain-type cooling bed by dynamic beam continues cooling, after being transported to cold bed exit by fixing chain-type cooling bed, directly by discharging transport trolley, rolled piece is transported on cold bed runout table, when rolled piece is delivered to cold bed exit, require to be cooled to less than 80 DEG C, cold bed entrance side arranges ventilation shaft and outdoor ventilation.
3, second φ 750 two-roller reversible milling train 4 roll change of First φ 750 two-roller reversible milling train adopts the automatic roll change of roll change buggy, old roller group directly pulls roll shop building into extreme position together with bearing block and guide and guards by roll change buggy, roller group assembly is traversing, old roller group assembly is shifted out, simultaneously by ready new roller group immigration, then roll change buggy counteragent, pushes milling train by new roller group assembly, completes whole roller replacing operation; φ 650 2 roller Continuous mill train 5 adopts the roll change of complete machine frame substitute mode, pulls old frame into roll shop building by flatcar, is carried out the replacing of new and old frame by the crane being arranged on roll shop building.
Described φ 650 2 roller Continuous mill train 5 comprises the φ 650 2 roller tandem mill that three front and back set gradually.
Before φ 650 2 roller Continuous mill train 5, arrange that a set of card is disconnected to be cut, φ 650 2 roller Continuous mill train adopts short-stress path duo mill, if steel-fastening problem appears in φ 650 2 roller Continuous mill train, then starts that card is disconnected to be cut, is broken by rolled piece card, expand further with Accident prevention.
As shown in Figure 2, a kind of technique using above-mentioned steel profile process units, adopts following steps:
(1) qualified hot continuously cast material or cold continuous casting billet are sent into heating furnace across interior regenerative walking-beam furnace 2 by blank across interior feeding skid 1, in regenerative walking-beam furnace 2, are heated to 900-1250 DEG C, obtain steel billet:
The qualified hot continuously cast material that steelshop provides is delivered to shaped steel heat by rotating roller and is sent roller-way, roller-way is sent to deliver to into furnace roller road by shaped steel heat again, the qualified cold continuous casting billet deposited in groups handling to feeding skid 1, deliver to into furnace roller road by Traverse Displacement Unit from feeding skid 1, entering, that furnace roller road carries out survey to continuous casting billet is long, weigh, and accurately locate by cloth figure entering on furnace roller road, then align through alignment pusher and shift onto on the predeterminated position of heating furnace built-in beam, enter the relative motion of the continuous casting billet after stove by heating furnace walking beam and built-in beam, end predeterminated position of coming out of the stove is transported to by entering stove end, in transport process, heating furnace adjusts its heating system according to the temperature of continuous casting billet and heats continuous casting billet, continuous casting billet its temperature when end is come out of the stove in arrival is made also to be heated to predetermined tapping temperature, when continuous casting billet arrives steel-supplying position, directly the steel billet heated is placed on the furnace delivery table in heating furnace by step rate,
(2) steel billet being heated to 900-1250 DEG C is carried out first time high-pressure water descaling by high pressure water descaling device 13, the iron scale of removing billet surface:
The steel billet heated delivers to by furnace delivery table the iron scale that high pressure water descaling device 13 removes billet surface, operating pressure 250bar;
(3) steel billet after first time de-scaling is delivered to main roll one and be rolled across interior First φ 750 two-roller reversible milling train 3:
The steel billet obtained after first time de-scaling is sent in First φ 750 two-roller reversible milling train 3 by the extension roller table before First φ 750 two-roller reversible milling train 3 and work roll table and is rolled, the forward and backward work roll table of milling train, extension roller table and band tilting gear manipulator auxiliary under, according to different trimmed sizes, reciprocal rolling is carried out to steel billet, roll into the rolled piece section of requirement;
(4) rolled piece that First φ 750 two-roller reversible milling train 3 shuts out is delivered to main roll one and be rolled across interior second φ 750 two-roller reversible milling train 4:
The rolled piece shut out from First φ 750 two-roller reversible milling train 3 is delivered to second φ 750 two-roller reversible milling train 4 by extension roller table before extension roller table, second φ 750 two-roller reversible milling train 4 after First φ 750 two-roller reversible milling train 3 and is rolled, the auxiliary lower reciprocal rolling of rolled piece work roll table, front and back manipulator, chain type Traverse Displacement Unit before and after second φ 750 two-roller reversible milling train 4, rolls into the rolled piece section of requirement;
(5) rolled piece that second φ 750 two-roller reversible milling train 4 shuts out is carried out second time high-pressure water descaling by dephosphorize by high pressure water device 13, the iron scale of removing billet surface:
The rolled piece that second φ 750 two-roller reversible milling train 4 shuts out is delivered on φ 650 2 roller Continuous mill train 5 inlet roller way, inlet roller way carries out second time high-pressure water descaling through high pressure water descaling device 4 pairs of rolled pieces, operating pressure 270bar, the iron scale that rolled piece surface again generates in the operation of rolling is removed clean, improves the surface quality of product;
(6) delivered to by the rolled piece after second time de-scaling and main roll two and be rolled across interior φ 650 2 roller Continuous mill train 5, obtain shaped steel rolled piece, described φ 650 2 roller Continuous mill train 5 comprises the φ 650 2 roller tandem mill that three front and back set gradually:
By the rolled piece on φ 650 2 roller Continuous mill train 5 inlet roller way after second time high-pressure water descaling, send into φ 650 2 roller Continuous mill train 5 at centralising device, the auxiliary lower of work roll table, roll into final finished section, obtain shaped steel rolled piece;
(7) the shaped steel rolled piece that φ 650 2 roller Continuous mill train 5 shuts out is delivered to cold bed and carries out sawing work across the hot-metal sawing machine 11 of interior cold bed entrance:
The shaped steel rolled piece shut out by φ 650 2 roller Continuous mill train 5, cold bed entrance hot-metal sawing machine 11 is delivered to through rollgang, as requested respectively the sawing work such as crop, segmentation, sampling are carried out to shaped steel rolled piece, shaped steel rolled piece after sawing is delivered to cold bed 12 porch by roller-way and is stopped, and does not need the shaped steel rolled piece of sawing directly to deliver to cold bed 12 porch and stops;
(8) the shaped steel rolled piece after sawing is delivered to cold bed and be cooled to less than 80 DEG C across interior cold bed 12;
(9) align being cooled to the shaped steel rolled piece of less than 80 DEG C to deliver to processing one across interior straightener 6:
Be cooled to the shaped steel rolled piece of less than 80 DEG C, by the transport of cold bed 12 runout table, import straightener 6 by straightener 6 entrance centralising device and carry out long chi on-line straightening;
(10) the shaped steel rolled piece after aligning is delivered to processing one and carries out collection row, marshalling across interior marshalling stand 7:
Shaped steel product after aligning, be transported in marshalling stand 7 approach table by rollgang after straightener 6, by marshalling stand 7 feeding cart, shaped steel rolled piece is transplanted on marshalling stand 7 from roller-way, rolled piece organize into groups on stand 7 according to while sawing radical carry out collection row, organize into groups;
(11) the shaped steel product after marshalling is delivered to processing two across interior scale cold sawing machine 8, the commodity section bar cut lengths required for sawing becomes, obtains steel profile:
Shaped steel product after marshalling, by marshalling stand 7 runout table and scale cold sawing machine district roller transport to scale cold sawing machine porch, by adjustable end stop, the head that shaped steel rolled piece is arranged is alignd, the commodity section bar cut lengths required for the shaped steel rolled piece row after alignment is become by the sawing of scale cold sawing machine;
(12) sawing become the shaped steel product of required commodity section bar cut lengths to deliver to piling stand and carry out quality examination:
The shaped steel product of required merchantable timber cut lengths sawing is become to be sent on piling stand inlet roller way successively by roller-way, by manually carrying out the inspection of rolled piece surface quality on stand, for defective in quality product and non-scale product, be directly sent to the collection of substandard product collecting frame by roller-way and roll off the production line;
(13) qualified shaped steel product is carried out collection row, piling:
By qualified shaped steel product, deliver to baffle plate F1 place by chain and carry out collection row according to piling width by the baffle plate F1 of piling stand 9 and shaped steel separator, shaped steel product after collection row, if need upset 180 °, be delivered directly to baffle plate F3 place, being directly turned to by discharging electromagnet can on vertical lift bin; If do not need upset, baffle plate F2 place is transported to by collection row chain, directly being moved to by underslung electromagnet can on vertical lift piling bin, vertical lift bin every yard of one deck, walk a step pitch downwards according to rolled piece height, ensure that the distance between each discharging electromagnet and vertical lift bin is rolled piece requisite space, after piling number of plies piling, vertical lift bin drops to lowest part, is directly dropped down onto by section bar layer on piling stand 9 runout table;
(14) shaped steel complete for piling buttress is carried out bundling:
The shaped steel buttress that piling is complete, bundling place is transported to by roller-way, after gripping means grips, carry out wire rod bundling, according to the different corresponding passages of delivery length bundling, beat the shaped steel rolled piece after bundle and be sent to collecting frame by roller-way and collect, be then transported on collecting frame and collect, store, afterwards with workshop crane handling warehouse-in, the finished product rolled piece after rolling off the production line is stored up by flat car transportation.
Claims (7)
1. a steel profile process units, it is characterized in that: comprise the blank that sets gradually from front to back across, heating furnace across, main roll one across, main roll two across, main roll two across right side be provided with processing one across, processing one across rear side be provided with processing two across, processing two across left side be provided with cold bed across, processing two across right side be provided with finished product across;
Feeding skid is provided with across interior at blank;
Regenerative walking-beam furnace is provided with across interior at heating furnace;
Roll one master and be provided with First φ 750 two-roller reversible milling train and second φ 750 two-roller reversible milling train across interior;
Roll two master and be provided with φ 650 2 roller Continuous mill train across interior;
Straightener, marshalling stand is provided with across interior in processing one;
Scale cold sawing machine, piling stand, collecting frame is provided with across interior in processing two;
Hot-metal sawing machine, cold bed is provided with across interior at cold bed;
Finished product is across for storing up shaped steel finished product;
A high pressure water descaling device is respectively equipped with between regenerative walking-beam furnace and First φ 750 two-roller reversible milling train and between second φ 750 two-roller reversible milling train and φ 650 2 roller Continuous mill train.
2. a kind of steel profile process units according to claim 1, it is characterized in that: on the rear extension roller table of First φ 750 two-roller reversible milling train, be provided with a switching device, described switching device comprises the moving stop driven by fluid pressure drive device be located at after First φ 750 two-roller reversible milling train on extension roller table, and the control device of described fluid pressure drive device is connected with the control system of First φ 750 two-roller reversible milling train.
3. a kind of steel profile process units according to claim 1, is characterized in that: described cold bed is step-by-step movement and chain type compound cold bed, and cold bed body is made up of step rate section and fixing segment.
4. a kind of steel profile process units according to claim 1, it is characterized in that: First φ 750 two-roller reversible milling train, second φ 750 two-roller reversible mill roll adopt the automatic roll change of roll change buggy, φ 650 2 roller Continuous mill train adopts the roll change of complete machine frame substitute mode.
5. a kind of steel profile process units according to claim 1, is characterized in that: described φ 650 2 roller Continuous mill train comprises the φ 650 2 roller tandem mill that three front and back set gradually.
6. a kind of steel profile process units according to claim 1, is characterized in that: before φ 650 2 roller Continuous mill train, arrange that a set of card is disconnected to be cut.
7. use a steel profile production technology for device described in claim 1, it is characterized in that: comprise the steps:
(1) qualified hot continuously cast material or cold continuous casting billet are sent into heating furnace across interior regenerative walking-beam furnace by blank across interior feeding skid, in regenerative walking-beam furnace, be heated to 900-1250 DEG C, obtain steel billet;
(2) steel billet being heated to 900-1250 DEG C is carried out first time high-pressure water descaling by high pressure water descaling device, the iron scale of removing billet surface;
(3) steel billet after first time de-scaling is delivered to main roll one and be rolled across interior First φ 750 two-roller reversible milling train;
(4) rolled piece that First φ 750 two-roller reversible milling train shuts out is delivered to main roll one and be rolled across interior second φ 750 two-roller reversible milling train;
(5) rolled piece that second φ 750 two-roller reversible milling train shuts out is carried out second time high-pressure water descaling by dephosphorize by high pressure water device, the iron scale of removing billet surface;
(6) delivered to by the rolled piece after second time de-scaling and main roll two and be rolled across interior φ 650 2 roller Continuous mill train, obtain shaped steel rolled piece, described φ 650 2 roller Continuous mill train comprises the φ 650 2 roller tandem mill that three front and back set gradually;
(7) the shaped steel rolled piece that φ 650 2 roller Continuous mill train shuts out is delivered to cold bed and carry out sawing work across the hot-metal sawing machine of interior cold bed entrance;
(8) the shaped steel rolled piece after sawing is delivered to cold bed and be cooled to less than 80 DEG C across interior cold bed;
(9) align being cooled to the shaped steel rolled piece of less than 80 DEG C to deliver to processing one across interior straightener;
(10) the shaped steel rolled piece after aligning is delivered to processing one and carry out collection row, marshalling across interior marshalling stand;
(11) the shaped steel product after marshalling is delivered to processing two across the commodity section bar cut lengths required for interior scale cold sawing machine sawing one-tenth, obtain steel profile.
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|---|---|---|---|
| CN201510923612.2A CN105414237A (en) | 2015-12-11 | 2015-12-11 | Steel section producing device and process thereof |
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| CN201510923612.2A CN105414237A (en) | 2015-12-11 | 2015-12-11 | Steel section producing device and process thereof |
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| CN108500080A (en) * | 2018-03-09 | 2018-09-07 | 泰州市大明不锈钢有限公司 | A kind of stainless steel bars round-bar pass technique |
| CN109967550A (en) * | 2019-05-08 | 2019-07-05 | 张振亮 | A kind of abnormity aluminium slot process units |
| CN112974517A (en) * | 2019-12-17 | 2021-06-18 | 兴化市兆驰机械科技有限公司 | Processing method of high-precision H-shaped steel |
| CN113399962A (en) * | 2021-06-17 | 2021-09-17 | 无锡互盛智能科技有限公司 | Processing method of fishplate for railway |
| CN114749497A (en) * | 2022-05-07 | 2022-07-15 | 中冶东方工程技术有限公司 | Intelligent profile steel finishing production line |
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| CN108500080A (en) * | 2018-03-09 | 2018-09-07 | 泰州市大明不锈钢有限公司 | A kind of stainless steel bars round-bar pass technique |
| CN109967550A (en) * | 2019-05-08 | 2019-07-05 | 张振亮 | A kind of abnormity aluminium slot process units |
| CN112974517A (en) * | 2019-12-17 | 2021-06-18 | 兴化市兆驰机械科技有限公司 | Processing method of high-precision H-shaped steel |
| CN113399962A (en) * | 2021-06-17 | 2021-09-17 | 无锡互盛智能科技有限公司 | Processing method of fishplate for railway |
| CN114749497A (en) * | 2022-05-07 | 2022-07-15 | 中冶东方工程技术有限公司 | Intelligent profile steel finishing production line |
| CN114749497B (en) * | 2022-05-07 | 2024-04-30 | 中冶东方工程技术有限公司 | Intelligent shaped steel finishing production line |
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