CN111558625B - Extrusion-rolling continuous forming device - Google Patents
Extrusion-rolling continuous forming device Download PDFInfo
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- CN111558625B CN111558625B CN202010603185.0A CN202010603185A CN111558625B CN 111558625 B CN111558625 B CN 111558625B CN 202010603185 A CN202010603185 A CN 202010603185A CN 111558625 B CN111558625 B CN 111558625B
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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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
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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
- 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
- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B1/24—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
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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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/211—Press driving devices
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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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/212—Details
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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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/217—Tube extrusion presses
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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
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/04—Cutting-off or removing waste
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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
- 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
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
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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
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
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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
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
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Abstract
The invention provides an extrusion-rolling continuous forming device, and belongs to the technical field of metal plastic forming production. The device consists of an extruder and a plurality of rolling mill frames, the configuration comprises heating equipment, conveying equipment, cooling equipment, shearing equipment and collecting equipment, and the extruder consists of an extrusion machine base, an extrusion die and a die set, an open type extrusion container, an extrusion push head, a pressure residue cutting mechanism and an extrusion power system; the open type extrusion container is divided into a left part and a right part, the opening and closing are realized through the hydraulic cylinder, the blank is received and locked, the inner side of the open type extrusion container can be changed and provided with different inner liners of the extrusion container according to the different sizes and shapes of the blank, and the inner side of the open type extrusion container is opened and closed together with the left part and the right part of the open type extrusion container. The device can realize continuous molding, improves the molding efficiency, shortens the process flow and reduces the energy consumption; the inner lining of the extrusion container is convenient to replace, and blanks with different cross section shapes, different cross section sizes and different lengths, such as square, rectangular, special-shaped and the like can be used.
Description
Technical Field
The invention belongs to the technical field of metal plastic forming production, and particularly relates to an extrusion-rolling continuous forming device.
Background
Profiles, wires, tubes and plates are the main products for the production of metal materials. At present, the forming production modes of the metal materials mainly comprise rolling and extrusion, and a rolling material production line and an extrusion production line of the metal materials are respectively formed by adopting a rolling production device and an extrusion production device.
1. Rolling production device
The rolling production device mainly comprises one or more rolling mills, and is provided with conveying, cooling, shearing, straightening and collecting equipment and the like to form a metal rolling production line. Such lines can be rolled in cold or hot state to produce rolled products of different sizes and shapes of various materials. Different rolling production devices can roll the metal blank into plate, pipe, shape and wire products with various specifications and sizes. The rolling production device has the advantages that: (1) the equipment has high capacity and high production efficiency; (2) the material has wide application range and good product performance; (3) the product has various varieties and can produce products with different specifications. The disadvantages are that: (1) the rolling passes are multiple, the production flow is long, and the energy consumption is high; (2) the quantity of equipment is large, and the product adjustment is not flexible; (3) complex section products are not easy to produce; (4) is not suitable for producing difficult-deformation metal with poor plasticity; (5) the unit is strong in professional property and single in product; (6) large equipment investment and high maintenance cost.
2. Extrusion production device
The extrusion production device generally comprises an extruder and equipment for drawing, cooling, collecting, straightening, sawing and the like to form a metal extrusion production line. Such lines are typically extrusion lines that produce extruded products of different sizes and shapes of various materials under hot conditions. By replacing the die, the metal blank can be extruded into metal plates, tubes, shapes and wires with different shapes. The advantages are that: (1) the equipment quantity is small, and the production process flow is short; (2) the metal material which is difficult to deform can be produced; (3) the production organization is flexible, and the method is suitable for small-batch multi-variety production. The disadvantages are that: (1) the product has limited size, and is not easy to produce large-size and long-size products; (2) the extrusion with residual pressure is large in cutting loss and low in metal yield; (3) single-piece production is realized, and the production efficiency is low; (4) the deformation amount in the extrusion process is large, the deformation resistance of the material is large, and the energy consumption is high; (5) the mould is complex to manufacture, the consumption of the mould is large, and the repair is difficult.
And other metal plastic forming production devices, such as a forging production device, a roll forging production device, a drawing production device and the like, have limited product application range and low single-machine capacity, and are only used for small-batch production of certain metal material products.
The invention aims to provide a novel metal material continuous forming device, namely an extrusion-rolling continuous forming production device. The invention combines the advantages of two forming devices of rolling and extruding to form a novel extruding-rolling continuous forming device with the characteristics of high efficiency, flexibility, economy and the like.
The invention content is as follows:
the technical scheme of the invention is as follows:
the extrusion-rolling continuous forming device mainly comprises an extrusion device and a plurality of rolling devices, and is provided with a heating device, a conveying device, a cooling device, a shearing device, a collecting device and the like to form the metal extrusion-rolling continuous forming device.
The extrusion equipment consists of an extrusion machine base, an extrusion die, a die carrier, an open-close type extrusion container, a main pushing hydraulic cylinder, an extrusion pushing head, a residual pressure cutting mechanism and an extrusion power system.
The extrusion machine base is of a U-shaped steel plate welding structure and comprises three parts, the front part of the extrusion machine base is a die carrier for installing an extrusion die, the middle part of the extrusion machine base is a platform for installing an open-close type extrusion container, and the platform at the rear part of the extrusion machine base is used for installing a main pushing hydraulic cylinder. The three parts are connected with the base of the extrusion device through welding, and the connection strength is increased through the side steel plate.
The extrusion die is fixed on the die frame through a pull rod bolt and has a single die and a combined die.
The open type extrusion container is arranged in the middle of the base and is divided into a left part and a right part, the opening and closing are realized through the hydraulic cylinder, the blank is received and locked, and different inner liners of the extrusion container can be replaced according to the different sizes and shapes of the blank.
The extrusion pushing head is arranged on the push rod, and can be replaced according to the size and shape of the blank and the product. The extrusion pushing head is divided into a pressure residual extrusion pushing head and a non-pressure residual extrusion pushing head.
The pressure remainder cutting mechanism is arranged above the extrusion die, adopts a punching mode, and the cutter is pushed by a hydraulic cylinder, so that when the open type extrusion container is opened, the pressure remainder is cut off quickly.
The main pushing hydraulic cylinder is driven by a hydraulic system, and the extrusion speed and the extrusion stroke can be adjusted according to the process requirements.
The multi-stand rolling mill consists of 4-16 rolling mills, and every four rolling mills are arranged on a base to form a rolling unit; the rolling mill adopts a compact main machine seat, has a shared installation size, and can use different types of rolling mills according to process requirements.
Each stand rolling mill has the same independent transmission system, and the transmission systems and the rolling mills are arranged on the same base. The transmission system consists of a motor, a standard cylindrical gear reducer and a gear box. The output shaft of the gear box can be connected with the rollers of the positive and negative three-roller Y-shaped rolling mills and the horizontal and vertical two-roller rolling mills.
In the extrusion-rolling forming process, a continuous forming speed relation is formed between the extrusion process and the rolling process, and the stability of the forming process is ensured by adjusting the rolling speed of each rack.
In the extrusion forming process, two modes of residual pressure extrusion and non-residual pressure extrusion can be adopted.
In the extrusion forming process, blanks with different sizes and specifications and different section shapes can be used, and the production is flexible.
In the extrusion-roll forming process, different types and different sizes of rolled products can be obtained through different types and different numbers of rolling stands.
The invention has the beneficial effects that:
1. the reasonable configuration of the forming process and equipment is realized, the pre-deformation is completed in the extrusion process, and the fine forming is completed in the rolling process;
2. the production of metal materials with poor plasticity and difficult deformation, such as magnesium alloy, titanium alloy and high-temperature alloy materials, is easy;
3. the machine has multiple functions, the production process is flexible, and the machine is suitable for producing small-batch and multi-variety metal materials;
4. extrusion-rolling continuous molding improves the molding efficiency, shortens the process flow and reduces the energy consumption;
5. because the process flow is short, the temperature drop of the rolled piece is small, and hot-rolled thin-wall sections and hot-rolled thin-plate strips can be produced;
6. the inner lining of the extrusion container is convenient to replace, and blanks with different cross section shapes, cross section sizes and lengths, such as square, rectangular, special-shaped and the like can be used;
7. the metal product can be produced by adopting two extrusion modes of extrusion with residual pressure and extrusion without residual pressure;
8. the extrusion-rolling continuous molding reduces the number of equipment and the occupied space, and reduces the equipment investment;
9. the molding productivity is adaptive to continuous casting, and the short-flow continuous casting-extrusion-continuous rolling production line can be formed by the continuous casting machine set;
10. the abrasion loss of the die is small, the size requirement on the die is not strict, and the service life of the die is long.
Drawings
Fig. 1 is a drawing of an extrusion-rolling mill train.
Fig. 2 is a view of the squeeze cylinder device (closed state).
Fig. 3 is a view of the squeeze cylinder device (open state).
FIG. 4 is a diagram of the extrusion with residual pressure.
Fig. 5 is a compression without residual pressure diagram.
Fig. 6 is a view of an extruder block.
FIG. 7 is a view showing the installation of an extrusion die
FIG. 8 is a main machine diagram of a positive Y-type three-high mill
FIG. 9 is a main machine diagram of a reverse Y-type three-high mill
FIG. 10 is a diagram of a main unit row of a two high rolling mill.
In the figure: 1. an extrusion cylinder; 2. extruding the push head; 3. a blank; 4. an open type extrusion cylinder; 5. extruding the die; 6. an extrusion; 7. a rolling mill; 8. rolling pieces; 9. a left half of the extrusion cylinder; 10. a right half extrusion cylinder; 11. a container base; 12. a hydraulic cylinder; 13. a press base; 14. lining the extrusion container; 15. a residue pressing and cutting mechanism; 16. a main push cylinder mounting platform; 17. a container mounting platform; 18. a mold frame; 19. a pressing device base; 20. reinforcing the side plates; 21. an outlet guide roller mounting platform; 22. an extrusion-rolling line; 23. fixing bolts of the extrusion die; 24. a gear case; 25. a standard speed reducer; 26. an electric motor; 27. a rolling device base.
Detailed Description
Example 1
Extrusion-hot rolling section bar production device
The extrusion-hot rolling section production device mainly comprises a 25MN extruder and 8 frames of 450 two-roller section steel rolling mills, and is provided with an electric heating device, a feeding manipulator, a conveying roller way, a push rod type cooling bed, a straightener, a cold sawing machine, a collecting and bundling device and the like to form the metal extrusion-rolling continuous forming section steel production device.
The 25MN extruder consists of an extrusion machine base, an extrusion die, a die set, an open type extrusion container, an extrusion push head, a pressure residue cutting mechanism and an extrusion power system. The extrusion die is fixed on the die carrier, the die carrier is arranged at the front part of the extrusion machine base, and the press residue cutting mechanism is arranged above the extrusion die; the open type extrusion cylinder is arranged in the middle of the extrusion machine base and consists of a left part and a right part, the opening and closing are realized through a hydraulic cylinder, and the lining structure can be replaced according to different incoming material shapes and sizes; the main pushing hydraulic cylinder is arranged at the rear part of the extrusion machine base, and the advancing stroke and speed can be freely adjusted according to different incoming material specifications. The three parts are connected with the base of the extrusion device by welding, and the connection strength is increased by the side steel plate.
The 8-stand 450 two-roller type steel rolling mill is characterized in that every four rolling mills are arranged on a rolling device base, a closed stand is adopted, electric pressing adjustment and manual axial adjustment can be achieved, the stand interval of each rolling mill is 600mm, a single transmission system is adopted, and the speed can be adjusted.
The specific actions of the device are implemented as follows: the open type extrusion container is divided into a left part and a right part, and the open-close state is realized through a hydraulic cylinder, so that the loading and unloading processes of blanks are realized, the section of each blank is a round, square or special-shaped blank, the length of the blank is 200-1500 mm, and the cross section area of the blank is 1000-10000 mm2(ii) a When feeding, starting the hydraulic cylinder to work, opening the extrusion container, receiving the blank, then starting the hydraulic cylinder again to work to close the extrusion container, and locking; starting a main pushing hydraulic cylinder, pushing the blank to advance in the extrusion container by an extrusion pushing head arranged on a push rod until the blank enters an extrusion die, and deforming the blank under the action of three-dimensional pressure stress; after the extrusion deformation is finished, the open type extrusion container is opened, and excess materials in the extrusion container are cut by an excess pressure cutting mechanism arranged above the extrusion die (or a non-pressure excess extrusion mechanism is adopted, and the excess materials are not required to be cut).
The extruded metal material directly enters an 8-frame 450 two-roller section mill, the extrusion equipment and the continuous rolling equipment form a continuous forming device, the final rolling speed is 1-5 m/s, and the product is a metal section with the thickness of 2-5 mm and the unfolded width of 200 mm.
Example 2
Extrusion-hot rolling strip production device
The extrusion-hot rolling strip production device mainly comprises a 25MN extruder and 8 frames of 500 four-roller strip steel rolling mills, and is provided with an electric heating device, a feeding manipulator, a conveying roller way, a hot coiling machine, a bundling device and the like to form the metal extrusion-rolling continuous forming strip production device.
The 25MN extruder consists of an extrusion machine base, an extrusion die, a die set, an open type extrusion container, an extrusion push head, a pressure residue cutting mechanism and an extrusion power system. The extrusion die is fixed on the die carrier, the die carrier is arranged at the front part of the extrusion machine base, and the press residue cutting mechanism is arranged above the extrusion die; the open type extrusion cylinder is arranged in the middle of the extrusion machine base and consists of a left part and a right part, the opening and closing are realized through a hydraulic cylinder, and the lining structure can be replaced according to different incoming material shapes and sizes; the main pushing hydraulic cylinder is arranged at the rear part of the extrusion machine base, and the advancing stroke and speed can be freely adjusted according to different incoming material specifications. The three parts are connected with the base of the extrusion device by welding, and the connection strength is increased by the side steel plate.
The rolling mill for the strip steel with the 8 stands and the 500 four rolls is characterized in that every four rolling mills are arranged on a base of a rolling device, a closed stand is adopted, electric pressing adjustment and manual axial adjustment can be achieved, the distance between the stand and each rolling mill is 800mm, a single transmission system is adopted, and the speed can be adjusted.
The specific actions of the device are implemented as follows: the open type extrusion container is divided into a left part and a right part, and the open-close state is realized through a hydraulic cylinder, so that the loading and unloading processes of blanks are realized, the section of each blank is a round, square or special-shaped blank, the length of the blank is 200-1500 mm, and the cross-sectional area of the blank is 5000-20000 mm2(ii) a When feeding, starting the hydraulic cylinder to work, opening the extrusion container, receiving the blank, then starting the hydraulic cylinder again to work to close the extrusion container, and locking; starting a main pushing hydraulic cylinder, pushing the blank to advance in the extrusion container by an extrusion pushing head arranged on a push rod until the blank enters an extrusion die, and deforming the blank under the action of three-dimensional pressure stress; after the extrusion deformation is finished, the open type extrusion container is opened, and excess materials in the extrusion container are cut by an excess pressure cutting mechanism arranged above the extrusion die (or a non-pressure excess extrusion mechanism is adopted, and the excess materials are not required to be cut).
The extruded metal material directly enters a 500-roller strip mill with 8 racks, the extrusion equipment and the continuous rolling equipment form a continuous forming device, the final rolling speed is 1-5 m/s, and the product is a metal strip with the thickness of 1-5 mm and the width of 100-400 mm.
Example 3
Extrusion-hot rolling wire production device
The extrusion-hot rolling wire production device mainly comprises a 25MN extruder, 8 horizontal and vertical alternative 400-two-roller wire rolling mills and 8 three-roller positive and negative Y-shaped rolling mills, and is provided with an electric heating device, a feeding manipulator, a conveying roller way, a take-up machine, a bundling device and the like to form the metal extrusion-rolling continuous forming wire production device.
The 25MN extruder consists of an extrusion machine base, an extrusion die, a die set, an open type extrusion container, an extrusion push head, a pressure residue cutting mechanism and an extrusion power system. The extrusion die is fixed on the die carrier, the die carrier is arranged at the front part of the extrusion machine base, and the press residue cutting mechanism is arranged above the extrusion die; the open type extrusion cylinder is arranged in the middle of the extrusion machine base and consists of a left part and a right part, the opening and closing are realized through a hydraulic cylinder, and the lining structure can be replaced according to different incoming material shapes and sizes; the main pushing hydraulic cylinder is arranged at the rear part of the extrusion machine base, and the advancing stroke and speed can be freely adjusted according to different incoming material specifications. The three parts are connected with the base of the extrusion device by welding, and the connection strength is increased by the side steel plate.
8 horizontal and vertical alternative 400-two-roller wire rod rolling mills are arranged, every four rolling mills are arranged on a base of a rolling device, a short stress path rolling mill and 8 three-roller positive and negative Y-shaped rolling mills are adopted, every four rolling mills are arranged on a base, the space between the frames is 800mm, each rolling mill adopts an independent transmission system, and the speed can be adjusted.
The specific actions of the device are implemented as follows: the open type extrusion container is divided into a left part and a right part, the open-close state is realized through a hydraulic cylinder, so that the loading and unloading processes of blanks are realized, the section of each blank is a round, square or special-shaped blank, the length of the blank is 200-1500 mm, and the diameter of the blank is 50-100 mm2(ii) a When feeding, starting the hydraulic cylinder to work, opening the extrusion container, receiving the blank, then starting the hydraulic cylinder again to work to close the extrusion container, and locking; starting a main pushing hydraulic cylinder, pushing the blank to advance in the extrusion container by an extrusion pushing head arranged on a push rod until the blank enters an extrusion die, and deforming the blank under the action of three-dimensional pressure stress; after the extrusion deformation is finished, the open type extrusion container is opened, and excess materials in the extrusion container are cut by an excess pressure cutting mechanism arranged above the extrusion die (or a non-pressure excess extrusion mechanism is adopted, and the excess materials are not required to be cut).
The extruded metal material directly enters 8 horizontal and vertical alternate 400-two-roll wire rod rolling mills and 8 three-roll positive and negative Y-shaped rolling mills to form a continuous forming device, the final rolling speed is 1-5 m/s, and the product is a metal disc with the diameter of 8-20 mm.
Example 4
Extrusion-hot rolling pipe production device
The extrusion-hot rolling pipe production device mainly comprises a 25MN extruder and a 5-frame 450 steel pipe rolling mill, and is provided with an electric heating device, a feeding manipulator, a conveying roller way, a push rod device, a fixed reducing device and the like to form the metal extrusion-rolling continuous forming pipe production device.
The 25MN extruder consists of an extrusion machine base, an extrusion die, a die set, an open type extrusion container, an extrusion push head, a pressure residue cutting mechanism and an extrusion power system. The extrusion die is fixed on the die carrier, the die carrier is arranged at the front part of the extrusion machine base, and the press residue cutting mechanism is arranged above the extrusion die; the open type extrusion cylinder is arranged in the middle of the extrusion machine base and consists of a left part and a right part, the opening and closing are realized through a hydraulic cylinder, and the lining structure can be replaced according to different incoming material shapes and sizes; the main pushing hydraulic cylinder is arranged at the rear part of the extrusion machine base, and the advancing stroke and speed can be freely adjusted according to different incoming material specifications. The three parts are connected with the base of the extrusion device by welding, and the connection strength is increased by the side steel plate.
The rolling mill for the steel pipe is characterized in that a 5-stand 450 steel pipe rolling mill and a four-stand rolling mill are installed on a base of a rolling device, electric pressing adjustment and manual axial adjustment can be achieved by adopting closed stands, the space between every two stands of the rolling mill is 800mm, and the speed can be adjusted by adopting an independent transmission system.
The specific actions of the device are implemented as follows: the open type extrusion container is divided into a left part and a right part, and the open-close state is realized through a hydraulic cylinder, so that the loading and unloading processes of blanks are realized, the blanks are solid round blanks, the length of the blanks is 300-1500 mm, and the outer diameter of the blanks is 50-100 mm; when feeding, starting the hydraulic cylinder to work, opening the extrusion container, receiving the blank, then starting the hydraulic cylinder again to work to close the extrusion container, and locking; starting a main pushing hydraulic cylinder, pushing a blank to advance in an extrusion container by an extrusion pushing head arranged on a push rod until the blank enters an extrusion die, and forcing the blank into a hollow capillary with the wall thickness of 5-15 mm by the extrusion die and a push rod device; after the extrusion deformation is finished, the open type extrusion container is opened, and excess materials in the extrusion container are cut by an excess pressure cutting mechanism arranged above the extrusion die (or a non-pressure excess extrusion mechanism is adopted, and the excess materials are not required to be cut).
The extruded metal material directly enters a 5-frame 450 steel pipe rolling mill, the extrusion equipment and the continuous rolling equipment form a continuous forming device, the final rolling speed is 1-5 m/s, and the diameter of a product is 20-50 mm and the wall thickness of the product is 1-10 mm.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. An extrusion-rolling continuous molding apparatus, characterized in that: the device consists of an extruder and a plurality of rolling mills (7), and the device comprises a heating device, a conveying device, a cooling device, a shearing device and a collecting device; the extruder consists of an extrusion machine base (13), an extrusion die (5), a die carrier (18), an open type extrusion container (4), an extrusion push head (2), a residual pressure cutting mechanism (15) and an extrusion power system; the extrusion die (5) is fixed on a die carrier (18), and the die carrier (18) is arranged at the front part of the extrusion machine base (13); the open type extrusion barrel (4) is arranged in the middle of the extrusion machine base (13), the extrusion pushing head (2) is arranged on a push rod of the main extrusion cylinder (1), and the extrusion pushing head can be replaced according to different sizes and shapes of blanks and products; the residue pressing and cutting mechanism (15) is arranged above the extrusion die (5), and can cut the residue pressing when the open type extrusion container (4) is opened; open recipient (4) divide into left and right two parts, realize opening and shutting through pneumatic cylinder (12), when the material loading, start pneumatic cylinder (12) work, open recipient (4) are opened, accept the blank, then start again that pneumatic cylinder (12) work makes the recipient closed, and lock, open recipient (4) inboard can be according to the different recipient inside linings (14) that set up of blank size and shape, open along with the left and right two parts of open recipient (4) open and shut together.
2. The extrusion-rolling continuous molding apparatus as set forth in claim 1, wherein: the extrusion machine base (13) is of a U-shaped steel plate welding structure and consists of three parts, the front part of the extrusion machine base (13) is provided with a die carrier (18) for installing an extrusion die (5), the middle part is provided with a platform for installing an open type extrusion container (4), and the platform at the rear part is used for installing a main push extrusion cylinder (1); the three parts are connected with a base (19) of the extrusion device through welding, and the connection strength is increased through the side steel plates.
3. The extrusion-rolling continuous molding apparatus as set forth in claim 1, wherein: the multi-stand rolling mill consists of 4-16 rolling mills, and every four rolling mills are arranged on a base to form a rolling unit; the rolling mill is one or more of a two-roll horizontal and vertical alternating rolling mill, a three-roll positive and negative Y-shaped rolling mill, a two-roll section steel rolling mill and a multi-roll plate strip rolling mill.
4. The extrusion-rolling continuous molding apparatus as set forth in claim 1, wherein: each stand rolling mill is provided with the same independent transmission system, and the transmission systems and the rolling mills are arranged on the same base; the transmission system consists of a motor (26), a standard speed reducer (25) and a gear box (24); an output shaft of the gearbox (24) is coupleable with a roll of a rolling mill.
5. The extrusion-rolling continuous molding apparatus as set forth in claim 1, wherein: in the extrusion-rolling forming process, a matched continuous forming speed relationship is formed between the extruder and the rolling mill, and the stability of the forming process is ensured by adjusting the rolling speed of each rolling mill.
6. The extrusion-rolling continuous molding apparatus as set forth in claim 1, wherein: in the extrusion forming process, a pressure residual extrusion or non-pressure residual extrusion mode is adopted.
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