CN111167856A - Double-high-rod production equipment and process - Google Patents
Double-high-rod production equipment and process Download PDFInfo
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- CN111167856A CN111167856A CN202010084770.4A CN202010084770A CN111167856A CN 111167856 A CN111167856 A CN 111167856A CN 202010084770 A CN202010084770 A CN 202010084770A CN 111167856 A CN111167856 A CN 111167856A
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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
- B21B1/18—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 in a continuous process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
- B21B37/76—Cooling control on the run-out table
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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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0224—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars
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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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
Abstract
The invention discloses double-high-bar production equipment, which belongs to the technical field of metallurgy and comprises a main rolling span and a finished product span which are sequentially connected, wherein the main rolling span comprises a furnace outlet roller way, a roughing mill group, a first flying shear, a middle mill group, a front end water tank, a second flying shear, a finishing mill group, a middle water tank, a third flying shear, a module mill, a middle and rear end water tank, a tail end water tank, a high-speed flying shear, a bar tail brake, a double-drum, a cooling bed, a cold shear and a first conveying roller way which are sequentially connected; the finished product span comprises a second conveying roller way and a collecting rack which are connected in sequence; and a first conveying roller way of the main rolling span is connected with a second conveying roller way through a span rack. The invention also discloses a process of the equipment. The production line of the invention is divided into two parts in the finishing mill group, and the line difference of the produced products is small; a plurality of groups of water tanks are arranged on a production line, the rolled piece is subjected to on-line heat treatment, the mechanical property of a finished product is ensured, the yield strength is not less than 500MPa, and meanwhile, the addition of the vanadium-nitrogen alloy product can be reduced and the production cost can be reduced by applying the on-line heat treatment process.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to double high rod production equipment and a process.
Background
The current bar production line production technical scheme mainly comprises the following two schemes: the first technical scheme is that the bar is produced by slitting and rolling, the production speed is lower than 18m/s, and the bar production device comprises a heating furnace, a roughing mill set, a crop flying shear, a middle mill set, a crop flying shear, a finishing mill set (slitting), a water passing device, a double-length flying shear, a cooling bed, a cold shear, an across-span chain and a collecting device. The second technical scheme is that the single high rod is used for producing the rod material, and the production speed is lower than 40m/s, namely a heating furnace, a rough rolling unit, a head cutting flying shear, a middle rolling unit, a water tank, a head cutting flying shear, a finishing rolling unit, a water tank, a module rolling mill, a water tank, a high-speed steel feeding device, a cooling bed, a cold shear, a cross chain and a collecting device.
The first technical scheme is a common bar production line, and adopts multi-segmentation rolling and water penetrating processes, and the finished product produced by the technical scheme has large line difference and low mechanical property.
The second technical scheme is a single high rod production line, the mechanical property of the finished product produced by the technical scheme is improved, the yield is low, and the yield of the single high rod production line is about 60 ten thousand tons.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the problems in the prior art, the invention provides double-high-rod production equipment, which solves the problems of low mechanical property and low yield of products; the invention also aims to provide the process.
The technical scheme is as follows: in order to achieve the purpose, the invention adopts the following technical scheme:
a double-high rod production device comprises a main rolling span and a finished product span which are sequentially connected, wherein a charging table is arranged at a charging rack and is connected with the main rolling span through a heating furnace; the main rolling span comprises a furnace outlet roller way, a roughing mill group, a first flying shear, a middle mill group, a front end water tank, a second flying shear, a finishing mill group, a middle water tank, a third flying shear, a module rolling mill, a middle and rear end water tank, a tail end water tank, a high-speed flying shear, a rod tail brake, a double-drum, a cooling bed, a cold shear and a first conveying roller way which are connected in sequence; the finished product span comprises a second conveying roller way and a collecting rack which are connected in sequence; and the first conveying roller way of the main rolling span is connected with the second conveying roller way through the span rack.
Furthermore, a parallel conveying guide groove and a branched conveying guide groove are sequentially arranged behind the finishing mill group, and a pinch roll and a third flying shear which are matched with each other are arranged on the branched conveying guide groove.
Furthermore, two middle water tanks are sequentially arranged on the parallel conveying guide groove.
Furthermore, the front end water tank is a 9m water tank, and the middle water tank, the middle rear end water tank and the tail end water tank are 6m water tanks.
Furthermore, the 9m water tank is provided with nine water-cooling nozzles, the 6m water tank is provided with six water-cooling nozzles, and the water pressure is 0.6-0.8 MPa.
Furthermore, a baffle plate chute and a lifting apron board are arranged between the double-rotary drum and the cooling bed, and the multiple-length finished products conveyed by the double-rotary drum are conveyed to the cooling bed through the baffle plate chute and the lifting apron board respectively.
Further, the process of the double-high-line production equipment comprises the following steps:
1) the continuous casting billet enters a heating furnace for heating after passing through a feeding rack and a furnace roller way, the heating temperature is 1050 ℃, and the heating time is 1.5-2 hours;
2) heating to a required temperature, sending the workpiece to a roughing mill group for rolling through a furnace outlet roller way, enabling the rolled piece at the outlet of the roughing mill group to have a section size of 80mm round, enabling the rolled piece to enter a middle mill group for continuous rolling after passing through a first flying shear head, enabling the rolled piece to have a section size of 52mm round after passing through the middle mill group, enabling the rolled piece to enter a front-end water tank for online heat treatment, enabling the rolled piece to enter a finishing mill group for continuous rolling after passing through a second flying shear head and a tail, enabling the rolled piece to be split in the finishing mill group, enabling the rolled piece to be split into two parts, and meanwhile enabling the rolled piece to enter a middle;
3) the two rolled pieces subjected to online heat treatment enter a module rolling mill consisting of six frames after passing through a third flying shear head to be rolled to obtain a rolled finished product, and the rolled finished product enters a middle-rear end water tank and a tail end water tank to be subjected to online heat treatment to improve the mechanical performance of the finished product;
4) finished rolled pieces are subjected to high-speed flying shear and multiple-length segmented shearing to obtain multiple-length finished products, the multiple-length finished products are decelerated through rod tail braking, then fall onto a cooling bed through a double-drum to be continuously cooled, the temperature of the rolled pieces is cooled to 250-350 ℃ from 500-600 ℃, cooled rolled pieces are obtained, the cooled rolled pieces are subjected to cold shearing to be fixed length, are conveyed to a transport vehicle through a first conveying roller way, are conveyed to a cross-over rack through the transport vehicle, are conveyed to a second conveying roller way through a flat supporting device, are bundled through an automatic bundling machine, are conveyed to a collecting rack through a lifting chain to be collected, and are conveyed to finished products to be stored in a cross-over mode through a crane.
Further, in the step 4), the multiple length finished product is braked by the rod tail, and the speed of the multiple length finished product is reduced to 0.5-2 m/s from 45 m/s.
Further, in the step 4), the double-drum is conveyed to a cooling bed, one double-length finished product is guided to the cooling bed by a baffle chute in the rotating process of the double-drum, one double-length finished product falls to a lifting apron plate and is conveyed to the cooling bed by the lifting apron plate, the two double-length finished products simultaneously enter the cooling bed to be continuously cooled to the required temperature, the double-length finished product is subjected to fixed-length shearing by cold shearing, and then is conveyed to a finished product span by a crane to be stacked through a first conveying roller way, a transport vehicle, a cross-span rack, a flat support device, an automatic bundling machine, a second conveying roller way, a lifting chain and a collecting rack.
Has the advantages that: compared with the prior art, the production line of the double-high-bar production equipment is divided into two parts in the finishing mill group, and the line difference of the produced products is small; a plurality of groups of water tanks are arranged on a production line, the rolled piece is subjected to on-line heat treatment, the mechanical property of a finished product is ensured, the yield strength is not less than 500MPa, meanwhile, the addition of a vanadium-nitrogen alloy product can be reduced by applying an on-line heat treatment process, the addition amount of vanadium with the diameter of less than 22 circles is zero, and the production cost is reduced; the production line of the invention has high rolling speed of 45m/s and high yield of about 120 ten thousand tons.
Drawings
FIG. 1 is a schematic diagram of the construction of a twin wire production plant;
FIG. 2 is a schematic view of the connection of a double drum to a cooling bed;
FIG. 3 is a schematic connection diagram of a first rollgang;
FIG. 4 is a schematic connection diagram of a second rollgang;
reference numerals: 1-feeding rack, 2-furnace-entering roller way, 3-heating furnace, 4-furnace-exiting roller way, 5-roughing mill group, 6-first flying shear, 7-intermediate mill group, 8-front-end water tank, 9-second flying shear, 10-finishing mill group, 11-middle water tank, 12-third flying shear, 13-modular mill, 14-middle-rear-end water tank, 15-tail-end water tank, 16-high-speed flying shear, 17-rod tail brake, 18-double drum, 19-cooling bed, 20-cooling shear, 21-first conveying roller way, 22-cross-span rack, 23-second conveying roller way, 24-collecting rack, 25-transport vehicle, 26-bifurcation conveying guide groove, 27-pinch roller, 28-baffle chute, 29-lifting apron board, 30-flat supporting device, 31-automatic bundling machine, 32-lifting chain and 33-parallel conveying guide groove.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
As shown in figures 1-4, the double-high rod production equipment comprises a main rolling span and a finished product span which are sequentially connected, wherein a furnace roller way 2 is arranged at a feeding rack 1, and the furnace roller way 2 is connected with the main rolling span through a heating furnace 3.
The main rolling span comprises a furnace outlet roller way 4, a rough rolling unit 5, a first flying shear 6, a middle rolling unit 7, a front end water tank 8, a second flying shear 9, a finishing rolling unit 10, a middle water tank 11, a third flying shear 12, a module rolling mill 13, a middle rear end water tank 14, a tail end water tank 15, a high-speed flying shear 16, a rod tail brake 17, a double-drum 18, a cooling bed 19, a cooling shear 20 and a first conveying roller way 21 which are connected in sequence.
The finished product bay comprises a second rollgang 23 and a collection gantry 24 connected in series. The first rollgang 21 of the main rolling span is connected with the second rollgang 23 through the spanning rack 22.
The continuous casting billet passes through a feeding rack 1 and a furnace roller way 2 and then enters a heating furnace 3 for heating, after the continuous casting billet is heated to a required temperature, the continuous casting billet is sent to a roughing mill group 5 for rolling through a furnace roller way 4, after the continuous casting billet is cut by a first flying shear 6, the continuous casting billet enters a middle mill group 7 for continuous rolling, after the continuous casting billet exits the middle mill group 7, the continuous casting billet enters a front-end water tank 8 for online heat treatment, after the cut by a second flying shear 9, the continuous casting billet enters a finishing mill group 10 for continuous rolling, the continuous casting billet is cut by the finishing mill group 10, the continuous casting billet is divided into two parts and simultaneously enters a middle water tank 11 arranged behind the finishing mill.
Two rolled pieces which are subjected to online heat treatment in a middle water tank 11 arranged after entering a finishing mill group 10 are subjected to head cutting by a third flying shear 12 and then enter a module rolling mill 13 consisting of six frames to be rolled to obtain a rolled finished product, and the rolled finished product enters a middle rear end water tank 14 and a tail end water tank 15 to be subjected to online heat treatment, so that the mechanical property of the finished product is improved.
Finished rolled pieces are subjected to 16-time length segmented shearing by high-speed flying shears to obtain multiple-length finished products, the multiple-length finished products are decelerated by a rod tail brake 17 and then fall onto a cooling bed 19 through a double-drum 18 to be continuously cooled to obtain cooled rolled pieces, the cooled rolled pieces are cut into fixed lengths by a cold shear 20, conveyed to a cross-over rack 22 through a first conveying roller way 21, then conveyed to a collecting rack 24 through a second conveying roller way 23 and collected by a conveying vehicle 25, and then conveyed to finished products to be stored in a cross-over mode through a crane.
A front-end water tank 8 is arranged behind the middle rolling mill unit 7 for carrying out on-line heat treatment on the rolled piece; the rolled piece is divided into two parts by a finishing mill group 10, and a middle water tank 11 is arranged behind the finishing mill group 10 for carrying out online heat treatment on the rolled piece; and a middle-rear end water tank 14 and a tail end water tank 15 are arranged behind the module rolling mill 13, and online heat treatment is carried out on the rolled piece.
Seven water tanks are arranged on the whole line, the positions of the seven water tanks are respectively arranged behind the middle rolling mill unit 7 and are provided with a front end water tank 8, the position of the seven water tanks is provided with two middle water tanks 11 behind the finishing rolling mill unit 10, and the positions of the two module rolling mills 13 are respectively provided with a middle rear end water tank 14 and a tail end water tank 15. Wherein, the front end water tank 8 is a 9m water tank, and the rest water tanks are 6m water tanks. Nine water-cooling nozzles are arranged on a 9m water tank, six water-cooling nozzles are arranged on a 6m water tank, and the water pressure is 0.6-0.8 MPa. After the rolled piece is subjected to online heat treatment by 7 water tanks, the yield strength of the finished rolled piece is not less than 500 MPa.
A double-high-rod production device comprises the following production lines:
1) bus:
the feeding rack 1 → the furnace entering roller way 2 → the heating furnace 3 → the furnace exiting roller way 4 → the roughing mill group 5 → the first flying shear 6 → the middle mill group 7 → the front end water tank 8 → the second flying shear 9 → the finishing mill group 10 → the middle water tank 11;
2) after being split into two parts by the finishing mill group 10, the steel passes through two parallel production lines:
the third flying shear 12 → the modular rolling mill 13 → the middle rear end water tank 14 → the end water tank 15 → the high speed flying shear 16 → the rod tail brake 17 → the double drum 18;
3) the production line enters a cooling bed 19 after passing through a double-drum 18:
the cold bed 19 → the cold shears 20 → the first rollgang 21 → the straddle frame 22 → the second rollgang 23 → the collection frame 24;
the third flying shear 12 → the modular rolling mill 13 → the middle rear water tank 14 → the end water tank 15 → the high-speed flying shear 16 → the rod tail brake 17 → the double-drum 18 "are two parallel production lines.
A process for a dual high line production facility, characterized in that: the method comprises the following steps:
1) the continuous casting billet passes through a feeding rack 1 and a furnace roller way 2 and then enters a heating furnace 3 for heating, wherein the heating temperature is 1050 ℃, and the heating time is 1.5-2 hours;
2) heating to a required temperature, sending the heated rolled pieces to a roughing mill group 5 for rolling through a furnace outlet roller way 4, enabling the rolled pieces to have a section size of 80mm round at an outlet of the roughing mill group 5, cutting the heads of the rolled pieces through a first flying shear 6, then entering an intermediate mill group 7 for continuous rolling, enabling the rolled pieces to have a section size of 52mm round after exiting the intermediate mill group 7, enabling the rolled pieces to enter a front-end water tank 8, arranging a nozzle in the water tank, enabling the water pressure to be 0.6-0.8 MPa, carrying out online heat treatment, enabling the rolled pieces to enter a finishing mill group 10 for continuous rolling after cutting the heads and the tails of the rolled pieces through a second flying shear 9, splitting the rolled pieces at the finishing mill group 10, enabling the rolled pieces to be split into two parts, meanwhile, enabling the rolled pieces to enter a middle water tank 11 arranged;
the specific parameters of the roughing mill train 5, the intermediate mill train 7, the finishing mill train 10 and the modular rolling mill 13 are shown in the following table.
3) The two rolled pieces subjected to online heat treatment enter a middle water tank 11 arranged behind a finishing mill group 10, a nozzle is arranged in the water tank, the water pressure is 0.6-0.8 MPa, the two rolled pieces are subjected to online heat treatment, the two rolled pieces are subjected to head cutting by a third flying shear 12 and then enter a module rolling mill 13 consisting of six frames to be rolled to obtain a rolled finished product, the rolled finished product enters a middle rear end water tank 14 and a tail end water tank 15, the nozzle is arranged in the water tank, the water pressure is 0.6-0.8 MPa, online heat treatment is carried out, and the mechanical performance of;
4) the finished rolled pieces are cut into multiple-length finished products in a 16-multiple-length sectional mode through high-speed flying shears, the multiple-length finished products are decelerated through rod tail braking 17, the speed of the rolled pieces is reduced to 0.5-2 m/s from 45m/s, the multiple-length finished products fall onto a cooling bed 19 through a double-drum 18 to be cooled continuously, the temperature of the rolled pieces is cooled to 250-350 ℃ from 500-600 ℃, cooled rolled pieces are obtained, the cooled rolled pieces are cut into fixed lengths through cold shears 20, the fixed lengths are conveyed to a transport vehicle 25 through a first conveying roller way 21, the transport vehicle 25 conveys the fixed lengths to a cross-frame 22, the fixed lengths are conveyed to a second conveying roller way 23 through a flat supporting device 30, the fixed lengths are bundled through an automatic bundling machine 31, bundled finished products are conveyed to a collecting frame 24 through a lifting chain 32 and are collected, and then.
The working process is as follows: the continuous casting billet enters a heating furnace 3 for heating through a feeding rack 1 and a furnace entering roller way 2, steel is discharged after the continuous casting billet is heated to 1050 ℃, the continuous casting billet is conveyed to a roughing mill group 5 consisting of 6 rolling mills through a furnace exiting roller way 4 for rolling, the rolled piece enters an intermediate mill group 7 consisting of 4 rolling mills after being cut by a first flying shear 6 for continuous rolling, the rolled piece is subjected to online heat treatment through a front end water tank 8, and the temperature of the rolled piece entering a finishing mill group 10 is controlled. The rolled piece is divided into two parts after being rolled for 4 times by a finishing mill group 10 consisting of 4 rolling mills, enters a middle water tank 11 for cooling, is respectively conveyed to a pinch roll 27 by a parallel conveying guide groove 33 and a branched conveying guide groove 26 after being discharged from the middle water tank 11, and the pinch roll 27 clamps the rolled piece and stably conveys the rolled piece to a third flying shear 12 for cropping and controls the temperature of the rolled piece entering a module rolling mill 13. The rolled piece is cut by the third flying shear 12 and then enters the module rolling mill 13 to be continuously rolled into a finished product, and the module rolling mill 13 consists of 6 rolling mills. The rolled piece is rolled into a finished product by a rolling mill out of the module, and the finished product is subjected to online heat treatment by a middle-rear end water tank 14 and a tail end water tank 15. Finished rolled pieces are subjected to multiple-length shearing by a high-speed flying shear 16, multiple-length finished products are braked by a rod tail 17, the speed of the multiple-length finished products is reduced to 0.5-2 m/s from 45m/s, the multiple-length finished products are conveyed to a cooling bed by a double-drum 18, one multiple-length finished product is guided to the cooling bed 19 by a baffle chute 28 in the rotating process of the double-drum 18, one multiple-length finished product falls to a lifting apron plate 29 and is conveyed to the cooling bed 19 by the lifting apron plate 29, two multiple-length finished products simultaneously enter the cooling bed 19 to be continuously cooled to the required temperature, the multiple-length finished products are subjected to fixed-length shearing by a cold shear 20, and then are conveyed to a finished product span by a crane for stacking through a first conveying roller way 21, a transport vehicle 25, a span table 22, a flat support device 30, an automatic bundling machine 31, a second conveying.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above examples are not intended to limit the present invention in any way, and all technical solutions obtained by means of equivalents or equivalent changes fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a two high stick production facility which characterized in that: the automatic feeding device comprises a main rolling span and a finished product span which are sequentially connected, wherein a furnace feeding roller way (2) is arranged at a feeding rack (1), and the furnace feeding roller way (2) is connected with the main rolling span through a heating furnace (3); the main rolling span comprises a furnace outlet roller way (4), a rough rolling unit (5), a first flying shear (6), a middle rolling unit (7), a front end water tank (8), a second flying shear (9), a finishing rolling unit (10), a middle water tank (11), a third flying shear (12), a modular rolling mill (13), a middle and rear end water tank (14), a tail end water tank (15), a high-speed flying shear (16), a rod tail brake (17), a double-drum (18), a cooling bed (19), a cooling shear (20) and a first conveying roller way (21) which are connected in sequence; the finished product span comprises a second conveying roller way (23) and a collecting rack (24) which are connected in sequence; the first conveying roller way (21) of the main rolling span is connected with the second conveying roller way (23) through the span rack (22).
2. A double high rod production apparatus according to claim 1, wherein: a parallel conveying guide groove (33) and a branched conveying guide groove (26) are sequentially arranged behind the finishing mill group (10), and a pinch roll (27) and a third flying shear (12) which are matched with each other are arranged on the branched conveying guide groove (26).
3. A double high rod production apparatus according to claim 2, characterized in that: two middle water tanks (11) are sequentially arranged on the parallel conveying guide groove (33).
4. A double high rod production apparatus according to claim 1, wherein: the water tank (8) at the front end is a 9m water tank, and the water tank (11) at the middle part, the water tank (14) at the middle and rear ends and the water tank (15) at the tail end are 6m water tanks.
5. A double high rod production apparatus according to claim 4, wherein: the water tank of 9m is provided with nine water-cooling nozzles, the water tank of 6m is provided with six water-cooling nozzles, and the water pressure is 0.6-0.8 MPa.
6. A double high rod production apparatus according to claim 1, wherein: a baffle plate chute (28) and a lifting apron plate (29) are arranged between the double-rotary drum (18) and the cooling bed (19), and the multiple-length finished products conveyed by the double-rotary drum (18) are conveyed to the cooling bed (19) through the baffle plate chute (28) and the lifting apron plate (29) respectively.
7. A process for a twin high line production plant as claimed in any one of claims 1 to 6, wherein: the method comprises the following steps:
1) the continuous casting billet passes through a feeding rack (1) and a furnace roller way (2) and then enters a heating furnace (3) for heating, wherein the heating temperature is 1050 ℃, and the heating time is 1.5-2 hours;
2) heating to a required temperature, sending the workpiece to a roughing mill group (5) for rolling through a furnace outlet roller way (4), wherein the section size of a rolled piece at the outlet of the roughing mill group (5) is 80mm round, cutting the head of the rolled piece through a first flying shear (6), entering a middle mill group (7) for continuous rolling, the section size of the rolled piece after the rolled piece exits the middle mill group (7) is 52mm round, entering a front-end water tank (8) for online heat treatment, cutting the head and the tail of the rolled piece through a second flying shear (9), entering a finishing mill group (10) for continuous rolling, splitting the rolled piece in the finishing mill group (10), dividing the rolled piece into two parts, entering a middle water tank (11) arranged behind the finishing mill group (10) for online heat treatment;
3) the two rolled pieces subjected to online heat treatment enter a middle water tank (11) arranged behind a finishing mill group (10), are subjected to head cutting by a third flying shear (12) and then enter a module rolling mill (13) consisting of six frames to be rolled to obtain a rolled finished product, and the rolled finished product enters a middle rear end water tank (14) and a tail end water tank (15) to be subjected to online heat treatment to improve the mechanical performance of the finished product;
4) finished rolled pieces are subjected to multi-length segmented shearing by a high-speed flying shear (16) to obtain multi-length finished products, the multi-length finished products are decelerated by a rod tail brake (17), then fall onto a cooling bed (19) through a double-drum (18) to be continuously cooled, the temperature of the rolled pieces is cooled to 250-350 ℃ from 500-600 ℃ to obtain cooled rolled pieces, the cooled rolled pieces are cut into fixed lengths by a cold shear (20), are conveyed to a transport vehicle (25) through a first conveying roller way (21), are conveyed to a cross-span rack (22) through the transport vehicle (25), are conveyed to a second conveying roller way (23) through a flat support device (30), are bundled through an automatic bundling machine (31), and the bundled finished products are conveyed to a collection rack (24) through a lifting chain (32) to be collected, and are conveyed to a finished product cross-span storage through a crane.
8. A process for a dual high line production facility as claimed in claim 7, wherein: in the step 4), the multiple length finished product is braked by the rod tail (17), and the speed of the multiple length finished product is reduced to 0.5-2 m/s from 45 m/s.
9. A process for a dual high line production facility as claimed in claim 7, wherein: in the step 4), one double-length finished product is conveyed to a cooling bed (19) through the double-rotating drum (18), one double-length finished product is guided to the cooling bed (19) through a baffle chute (28) in the rotating process of the double-rotating drum (18), one double-length finished product falls to a lifting apron plate (29) and is conveyed to the cooling bed (19) through the lifting apron plate (29), two double-length finished products simultaneously enter the cooling bed (19) to be continuously cooled to the required temperature, the double-length finished product is subjected to fixed-length shearing through a cold shear (20), and then is conveyed to a cross-span rack (22), a flat support device (30), an automatic bundling machine (31) for bundling, a second conveying roller way (23), a lifting chain (32) and a collecting rack (24) and is conveyed to a finished product cross-span for stacking through a crane.
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| CN202010084770.4A CN111167856A (en) | 2020-02-10 | 2020-02-10 | Double-high-rod production equipment and process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957745A (en) * | 2020-07-10 | 2020-11-20 | 山东钢铁股份有限公司 | Hot rolling controlled cooling method for low-alloy high-strength large-size bar |
| CN113751498A (en) * | 2021-09-03 | 2021-12-07 | 福建泉州闽光钢铁有限责任公司 | Steel rolling process for double-altitude line |
| CN114260311A (en) * | 2021-10-26 | 2022-04-01 | 中冶南方工程技术有限公司 | High-yield rod production system |
| CN114405994A (en) * | 2022-03-11 | 2022-04-29 | 陕钢集团产业创新研究院有限公司 | Method for rolling ER70S-6 wire rod by using thermomechanical control process arrangement |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006131218A1 (en) * | 2005-06-08 | 2006-12-14 | Sms Meer S.P.A. | Multifunction rolling mill plant |
| CN203725524U (en) * | 2014-02-24 | 2014-07-23 | 天津市博控机电科技有限公司 | Ultra-high-speed roll steel bar production line |
| CN203725504U (en) * | 2014-02-24 | 2014-07-23 | 天津市博控机电科技有限公司 | High-speed steel feeding device with double rotary hubs for cooling bed |
| CN106734192A (en) * | 2017-01-13 | 2017-05-31 | 中冶华天工程技术有限公司 | High intensity small dimension hot-rolled reinforced bar production equipment and its production technology |
| CN108994078A (en) * | 2018-06-11 | 2018-12-14 | 山东钢铁股份有限公司 | A kind of middle bar controlled rolling and controlled cooling method |
| CN110125176A (en) * | 2019-06-24 | 2019-08-16 | 新余钢铁股份有限公司 | Separated time cooling device after base cutting among a kind of hot rolled ribbed bars |
| CN209829865U (en) * | 2019-03-08 | 2019-12-24 | 首钢长治钢铁有限公司 | High-speed wire rod and high-speed rod composite production line |
-
2020
- 2020-02-10 CN CN202010084770.4A patent/CN111167856A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006131218A1 (en) * | 2005-06-08 | 2006-12-14 | Sms Meer S.P.A. | Multifunction rolling mill plant |
| CN203725524U (en) * | 2014-02-24 | 2014-07-23 | 天津市博控机电科技有限公司 | Ultra-high-speed roll steel bar production line |
| CN203725504U (en) * | 2014-02-24 | 2014-07-23 | 天津市博控机电科技有限公司 | High-speed steel feeding device with double rotary hubs for cooling bed |
| CN106734192A (en) * | 2017-01-13 | 2017-05-31 | 中冶华天工程技术有限公司 | High intensity small dimension hot-rolled reinforced bar production equipment and its production technology |
| CN108994078A (en) * | 2018-06-11 | 2018-12-14 | 山东钢铁股份有限公司 | A kind of middle bar controlled rolling and controlled cooling method |
| CN209829865U (en) * | 2019-03-08 | 2019-12-24 | 首钢长治钢铁有限公司 | High-speed wire rod and high-speed rod composite production line |
| CN110125176A (en) * | 2019-06-24 | 2019-08-16 | 新余钢铁股份有限公司 | Separated time cooling device after base cutting among a kind of hot rolled ribbed bars |
Non-Patent Citations (2)
| Title |
|---|
| 孙建国，喻云龙: "高速棒材轧机工艺及装备技术集成介绍", 《轧钢》 * |
| 程知松: "《棒线材生产创新工艺及设备》", 31 October 2016 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111957745A (en) * | 2020-07-10 | 2020-11-20 | 山东钢铁股份有限公司 | Hot rolling controlled cooling method for low-alloy high-strength large-size bar |
| CN111957745B (en) * | 2020-07-10 | 2022-04-08 | 山东钢铁股份有限公司 | Hot rolling controlled cooling method for low-alloy high-strength large-size bar |
| CN113751498A (en) * | 2021-09-03 | 2021-12-07 | 福建泉州闽光钢铁有限责任公司 | Steel rolling process for double-altitude line |
| CN114260311A (en) * | 2021-10-26 | 2022-04-01 | 中冶南方工程技术有限公司 | High-yield rod production system |
| CN114260311B (en) * | 2021-10-26 | 2024-01-26 | 中冶南方工程技术有限公司 | High-yield bar production system |
| CN114405994A (en) * | 2022-03-11 | 2022-04-29 | 陕钢集团产业创新研究院有限公司 | Method for rolling ER70S-6 wire rod by using thermomechanical control process arrangement |
| CN114405994B (en) * | 2022-03-11 | 2024-04-09 | 陕钢集团产业创新研究院有限公司 | Method for rolling ER70S-6 wire rod by using thermo-mechanical control process |
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Application publication date: 20200519 |