CN111360065A - Induction heating plate multi-pass edge thickening rolling forming device and method - Google Patents
Induction heating plate multi-pass edge thickening rolling forming device and method Download PDFInfo
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- CN111360065A CN111360065A CN202010295479.1A CN202010295479A CN111360065A CN 111360065 A CN111360065 A CN 111360065A CN 202010295479 A CN202010295479 A CN 202010295479A CN 111360065 A CN111360065 A CN 111360065A
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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
- B21B1/12—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 in a continuous process, i.e. without reversing stands
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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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
-
- 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
- B21B45/004—Heating the product
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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
- B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
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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
- B21B2015/0064—Uncoiling the rolled product
Abstract
The invention discloses a multi-pass edge thickening rolling forming device and a method for an induction heating plate, which belong to the technical field of metal material processing, and mainly comprise an uncoiler, a leveler, a centering device, a shearing machine and the like, and are characterized by also comprising a forming unit consisting of 3-6 forming racks, wherein a group of induction heaters are arranged in front of each forming rack, the edge of a workpiece is heated to 700-1000 ℃ when the workpiece passes through the induction heaters, and then the workpiece is gradually deformed according to the hole patterns formed by horizontal rollers and vertical rollers under the action of the horizontal rollers on each forming rack. The device is adopted to produce the special-shaped steel, so that the equipment investment can be saved, the hot rolling burning loss is reduced, the pickling is avoided, and the economic and social benefits are obvious.
Description
Technical Field
The technology belongs to the technical field of metal material processing, and particularly relates to a device and a method for local thickening and multi-pass rolling forming of an induction heating plate.
Background
At present, with the deep progress of various industrial and civil engineering, simple steel for plate and strip pipe type building can not fully meet the requirements of various construction projects and product processing, and various deformed steel bars with complex sections are produced, wherein typical deformed materials are various channel steels, I-shaped steels, channel steels and the like. However, most of these profiled bars are produced by hot rolling by integrally heating the plate in the conventional manufacturing process, which causes problems such as cost increase, influence on the quality and energy consumption of the steel, yield of the steel, and the like, and causes another problem of environmental pollution due to pickling.
In order to change the production technical condition, carry out technical innovation, and strive to save energy, reduce emission, save material and reduce weight in the material manufacturing process, people invented a transverse thickness-variable production and processing technology. The thickness of the plate can be changed according to the load condition, the service condition and the structural requirement by manufacturing the profiled bar according to the transverse thickness-variable process, and the structural weight is greatly reduced compared with that of a plate with the same thickness.
When the variable-thickness plate is manufactured, a workpiece inevitably suffers great uneven deformation, so that the plate shape is poor, the size deviation is large, and even cracks occur. To solve these problems, the present patent application is now proposed.
Disclosure of Invention
The invention of this patent application aims at:
1) by utilizing differential temperature induction heating, the local deformation resistance of the workpiece is reduced, the plasticity is improved, and the capability of bearing uneven deformation is enhanced;
2) and processing the workpiece into a required section shape by using a centralized transmission forming unit through multi-pass gradual forming to obtain the transverse variable thickness plate.
According to the above-mentioned objects, the correct achievement of the objects of the invention is ensured by a production device with an induction heating device and by a specific hole pattern design. In practical implementation, a plurality of rolling racks are utilized, and a production device which mainly performs local thickening on two sides of steel by using vertical roll pressing of the rolling racks is adopted to perform rolling forming on complex sections of the steel, namely, a multi-pass edge thickening rolling forming device for induction heating plates is designed, the device mainly comprises an uncoiler, a leveler, a centering device, a shearing machine, a collecting table and a power transmission device, and is characterized by further comprising 3-6 groups of induction heaters and 3-6 forming units, wherein the uncoiler, the leveler, the centering device, the induction heaters, the forming units, the shearing machine, the collecting table and the like are arranged on a central line according to the sequence, a group of induction heaters are arranged in front of each forming unit, and the whole equipment is driven by the power device in a centralized and unified manner, wherein:
(1) the forming machine set consists of n forming machine frames, wherein n is greater than 2, an induction heater matched with each forming machine set is uniformly arranged in front of each forming machine set, and the induction heater is powered by an induction heating power supply;
(2) the forming machine set adopts a centralized transmission mode, a power device of the forming machine set is formed by combining a transmission motor, a speed reducer and a transmission distribution box, the power device is connected with each other through a transmission shaft and a coupler, and the transmission distribution box is connected with each forming machine frame;
(3) each induction heater is arranged in front of each forming unit respectively, each group of induction heaters is composed of 2-4 induction heating devices, and the induction heaters are symmetrically arranged on two sides of a processed workpiece to locally heat the edge end part of the workpiece;
(4) each forming frame consists of a pair of horizontal rollers and a pair of vertical rollers, the middle parts of the horizontal rollers are used for pressing the workpiece, and the workpiece is driven to move forwards along the rolling direction; the sides of the two horizontal rolls leave a space for thickening the workpiece, and the workpiece is gradually thickened and deformed in a hole pattern formed by the vertical rolls and the horizontal rolls under the pressure action of each pair of vertical rolls according to the design requirement of the workpiece to be processed.
The operation method for the multi-pass edge thickening rolling forming of the induction heating plate is formed by utilizing the equipment and performing corresponding operation, and the specific content is as follows:
(1) starting a power device in equipment by taking coiled equal-thickness plates as raw materials, then placing the raw materials on an uncoiler, and after leveling and centering operations, feeding the raw materials into a forming machine;
(2) starting an induction heater, carrying out local induction heating on two sides of the steel to be extruded and thickened to 700-1000 ℃, and then entering a forming rack;
(3) according to the final thickness of the workpiece, adjusting the roll gap of the horizontal rolls of each forming rack, pressing the workpiece by the middle part of the horizontal roll, and driving the workpiece to move forwards along the rolling direction through the rotation of the workpiece;
(4) adjusting the roll gap of the vertical roll of each forming frame to enable the edge of the vertical roll to press and form the two sides of the workpiece heated to 700-1000 ℃;
(5) the speed of the transmission motor is controlled, and the coordinated operation of the whole production line in a reasonable speed interval is ensured.
(6) And adjusting the roll gap of each pair of vertical rolls to enable the workpiece to be gradually deformed in the pass formed by the vertical rolls and the horizontal rolls, and gradually thickening the edge part of the workpiece under the gradual extrusion of each pair of vertical rolls along with the increase of the rolling pass until the target size is reached.
The device is used for production, and can obtain very good economic effect, which comprises the following steps:
1. the equipment investment is saved, and the production defects of integral heating, high-temperature rolling, energy waste, steel burning loss and the like of steel required by a hot rolling process are avoided;
2. the equipment investment is low, the construction of a heating furnace and an acid washing workshop is omitted, the occupied area is small, and the land resources are saved.
3. The environment is optimized, electricity is used as energy, and no combustion waste gas is generated; the pickling is eliminated, the water is saved, meanwhile, no acid gas is discharged, and no waste acid and acid-containing sludge are generated. Is beneficial to environmental protection and the life health of people.
Drawings
FIG. 1 is a schematic structural view of an induction heating plate multi-pass edge thickening rolling forming device;
FIG. 2 is a schematic view of the local heating of the ends of both sides of the workpiece;
FIG. 3 is a schematic view of the combined pass of the horizontal roll and the vertical roll of the edge thickening roll forming device;
FIG. 4 is a schematic diagram showing the result of edge thickening by pressing down the edge with the vertical rolls of the edge thickening roll forming apparatus;
FIG. 5 is a schematic view of a thickened groove pass under horizontal rolling;
FIG. 6 is a schematic view of a thickened I-shaped pass under horizontal rolling;
FIG. 7 is a cross-sectional view of a variable thickness plate having a cross-sectional shape symmetrical about both horizontal and vertical axes;
FIG. 8 is a cross-sectional view of a variable thickness plate having a symmetrical cross-sectional shape about a vertical axis;
FIG. 9 is a sectional view of a variable thickness plate having a cross-sectional shape symmetrical about a horizontal axis;
FIG. 10 is a sectional view of a variable thickness plate in which the cross-sectional shape is asymmetrical both in the horizontal axis and in the vertical axis;
FIG. 11 is a cross-sectional view of a variable thickness plate having a cylindrical cross-sectional shape at the end;
FIG. 12 is a sectional view of a variable thickness plate having a curved cross-sectional shape.
In the drawings: the device comprises a transmission motor 1, a speed reducer 2, a transmission distribution box 3, a forming machine 4, an induction heater 5, an induction heating power supply 6, an uncoiler 7, a leveler 8, a centering device 9, a shearing machine 10, a collecting table 11, a horizontal roller 12, a vertical roller 13, a workpiece 14 and a workpiece induction heating area 15.
Detailed Description
The induction heating plate multi-pass edge thickening rolling forming device completed by the invention creation is implemented, the form of the device is shown in figure 1, the device mainly comprises an uncoiler 7, a leveler 8, a centering device 9, a shearing machine 10, a collecting table 11, a transmission motor 1 in a power transmission device, a speed reducer 2 and a transmission distribution box 3, and is characterized by also comprising 3-6 groups of induction heaters 5 and 3-6 forming racks 4, wherein the uncoiler 7, the leveler 8, the centering device 9, the induction heaters 5, the forming racks 4, the shearing machine 10 and the collecting table 11 are arranged on a central line according to the sequence, a group of induction heaters 5 are arranged in front of each forming rack 4 according to needs, and the whole equipment is driven by the power device in a centralized mode, wherein:
(1) the forming machine set consists of 3 forming machine frames 4, a single group of induction heaters 5 matched with the forming machine frames are arranged in each forming machine frame 4, and the induction heaters 5 are powered by an induction heating power supply 6;
(2) each forming machine frame 4 adopts a centralized transmission mode, a power device of the forming machine frame is composed of a transmission motor 1, a speed reducer 2 and a transmission distribution box 3, the power device, the transmission motor, the speed reducer and the transmission distribution box are connected together through a transmission shaft and a coupler, and the transmission distribution box 3 is connected with each forming machine frame 4.
(3) The induction heaters 5 are respectively arranged at two sides of the edge end part of the workpiece 14 in front of each forming frame 4, and are powered by an induction heating power supply to locally heat the edge end part of the workpiece to form an induction heating area 15, as shown in fig. 2;
(4) each forming stand 4 is constituted by a pair of horizontal rolls 12 and a pair of vertical rolls 13, the combination of which has a pass as shown in fig. 3, and further: FIG. 5 is a schematic view of a thickened groove pass under horizontal rolling; FIG. 6 is a schematic view of a thickened I-shaped pass under horizontal rolling; when the device works, the middle part of the horizontal roller 12 presses the workpiece 14 to drive the workpiece 14 to move forwards along the rolling direction; the sides of the two horizontal rolls 12 leave a space for thickening the workpiece, and the workpiece 14 is gradually thickened and deformed in the hole shape formed by the vertical rolls 13 and the horizontal rolls 12 under the rolling force of each pair of vertical rolls 13 according to the design requirement of the workpiece to be processed.
With the above apparatus, the following operations are performed:
(1) starting a power device in equipment by taking coiled equal-thickness plates as raw material workpieces, and then placing the raw materials on an uncoiler for leveling and centering;
(2) starting the induction heater 5, carrying out local induction heating on two sides of the raw material workpiece 14 of the equal-thickness plate to be extruded and thickened to enable the temperature to reach 700 ℃ and 100 ℃, and then entering the forming rack 4;
(3) according to the final thickness of the workpiece, the roll gap size of the horizontal roll 12 of each forming frame 4 is adjusted, the middle part of the horizontal roll 12 compresses the workpiece 14, and the workpiece 14 is driven to move forwards along the rolling direction by the rotation of the workpiece;
(4) primarily determining the roll gap size of the vertical roll of each forming frame 4, so that the edge part of the vertical roll 13 performs press forming on two sides of the workpiece 14 which is heated to 700-1000 ℃;
(5) the speed of the transmission motor 1 is controlled, and the coordinated operation of the whole production line in a reasonable speed interval is ensured.
(6) And adjusting the roll gap of each pair of vertical rolls 13 again to enable the workpiece to be gradually deformed in the pass formed by the vertical rolls and the horizontal rolls, and gradually thickening the edge of the workpiece under the gradual extrusion of each pair of vertical rolls along with the increase of the rolling pass until the target size is reached.
(7) The rolling pass formed by the last forming frame 4 is a finished hole, the finished hole is used as a workpiece to be shaped, and the transverse section of the shaped workpiece is as follows: either about the horizontal axis or the vertical axis; it may also be shaped as a transverse section that is symmetrical about a horizontal axis, asymmetrical about a vertical axis, or asymmetrical about a horizontal axis, symmetrical about a vertical axis; or asymmetrical about the horizontal axis and asymmetrical about the vertical axis, and the specific shape is shown in fig. 7 to 12.
Claims (2)
1. The utility model provides an induction heating panel multiple-pass limit thickening rolling forming device, this kind of device mainly includes decoiler, leveler, centering device, cutter, collection platform, power transmission, characterized by still includes 3 ~ 6 induction heater and 3 ~ 6 shaping units, wherein decoiler, leveler, centering device, induction heater, shaping unit, cutter, collection platform etc. according to the order pendulum on a central line, the place ahead of each shaping unit all is equipped with a set of induction heater, whole equipment is concentrated by power device and is unified the drive, wherein:
(1) the forming unit consists of n forming racks, wherein n is more than or equal to 3, a group of induction heaters matched with each forming unit are uniformly distributed in front of each forming unit, and the induction heaters are powered by an induction heating power supply;
(2) the forming machine set adopts a centralized transmission mode, a power device of the forming machine set is formed by combining a transmission motor, a speed reducer and a transmission distribution box, the power device is connected with each other through a transmission shaft and a coupler, and the transmission distribution box is connected with each forming machine frame;
(3) each group of induction heaters consists of 2-4 induction heating devices, and the induction heating devices are symmetrically arranged on two sides of a processed workpiece to locally heat the edge end part of the workpiece;
(4) each forming frame consists of a pair of horizontal rollers and a pair of vertical rollers, the middle parts of the horizontal rollers are used for pressing the workpiece, and the workpiece is driven to move forwards along the rolling direction; the sides of the two horizontal rolls leave a space for thickening the workpiece, and the workpiece is gradually thickened and deformed in a hole pattern formed by the vertical rolls and the horizontal rolls under the pressure action of each pair of vertical rolls according to the design requirement of the workpiece to be processed.
2. A method of operating an induction heated plate for multiple pass edge thickening roll forming using the apparatus of claim 1, the method comprising:
(1) starting a power device in equipment by taking coiled equal-thickness plates as raw materials, then placing the raw materials on an uncoiler, and after leveling and centering operations, feeding the raw materials into a forming machine;
(2) starting an induction heater, carrying out local induction heating on two sides of the steel to be extruded and thickened to 700-1000 ℃, and then entering a forming rack;
(3) according to the final thickness of the workpiece, adjusting the roll gap of the horizontal rolls of each forming rack, pressing the workpiece by the middle part of the horizontal roll, and driving the workpiece to move forwards along the rolling direction through the rotation of the workpiece;
(4) adjusting the roll gap of the vertical roll of each forming frame to enable the edge of the vertical roll to press and form the two sides of the workpiece heated to 700-1000 ℃;
(5) the speed of the transmission motor is controlled, and the coordinated operation of the whole production line in a reasonable speed interval is ensured.
(6) And adjusting the roll gap of each pair of vertical rolls to enable the workpiece to be gradually deformed in the pass formed by the vertical rolls and the horizontal rolls, and gradually thickening the edge part of the workpiece under the gradual extrusion of each pair of vertical rolls along with the increase of the rolling pass until the target size is reached.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019113872167 | 2019-12-30 | ||
| CN201911387216 | 2019-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111360065A true CN111360065A (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010295479.1A Pending CN111360065A (en) | 2019-12-30 | 2020-04-15 | Induction heating plate multi-pass edge thickening rolling forming device and method |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191214005A (en) * | 1911-06-30 | 1913-05-29 | Johann Puppe | Improvements in the Rolling of Bars or Girders of I, H, U, or like Section. |
| JPS55165201A (en) * | 1979-06-06 | 1980-12-23 | Morio Shinoda | Method and apparatus for regenerating old rail |
| JPS56111510A (en) * | 1980-02-08 | 1981-09-03 | Sumitomo Metal Ind Ltd | Vertical rolling mill |
| JPS57160501A (en) * | 1981-03-31 | 1982-10-02 | Sumitomo Metal Ind Ltd | Method and device for controlling width and thickness of steel strip |
| US4555921A (en) * | 1982-03-02 | 1985-12-03 | Sumitomo Metal Industries, Ltd. | Method and apparatus for controlling width and thickness of strip |
| WO1986000246A1 (en) * | 1984-06-29 | 1986-01-16 | SSAB SVENSKT STA^oL AB | Method to produce profiled bars |
| JPS6133702A (en) * | 1984-07-24 | 1986-02-17 | Sumitomo Metal Ind Ltd | Preupsetting device |
| JPS62279011A (en) * | 1986-05-23 | 1987-12-03 | Kawasaki Steel Corp | Plate width control method for hot rolling |
| JPH05154596A (en) * | 1991-11-30 | 1993-06-22 | Aichi Steel Works Ltd | Manufacture of deformed flat stainless steel |
| JPH06114404A (en) * | 1992-10-05 | 1994-04-26 | Sumitomo Metal Ind Ltd | Manufacture of metallic sheet small in edge drop |
| JPH06154803A (en) * | 1992-11-18 | 1994-06-03 | Aichi Steel Works Ltd | Manufacture of angle bar |
| JPH10328708A (en) * | 1997-06-06 | 1998-12-15 | Nkk Corp | Hot rolling equipment train and method for rolling hot rolled steel strip |
| CN1370638A (en) * | 2001-01-31 | 2002-09-25 | 摩根建设公司 | High speed finishing unit |
| CN209035113U (en) * | 2018-11-14 | 2019-06-28 | 南通金轮智能装备研发有限公司 | A kind of finishing rolling mill for I-shaped steel rolling |
-
2020
- 2020-04-15 CN CN202010295479.1A patent/CN111360065A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191214005A (en) * | 1911-06-30 | 1913-05-29 | Johann Puppe | Improvements in the Rolling of Bars or Girders of I, H, U, or like Section. |
| JPS55165201A (en) * | 1979-06-06 | 1980-12-23 | Morio Shinoda | Method and apparatus for regenerating old rail |
| JPS56111510A (en) * | 1980-02-08 | 1981-09-03 | Sumitomo Metal Ind Ltd | Vertical rolling mill |
| JPS57160501A (en) * | 1981-03-31 | 1982-10-02 | Sumitomo Metal Ind Ltd | Method and device for controlling width and thickness of steel strip |
| US4555921A (en) * | 1982-03-02 | 1985-12-03 | Sumitomo Metal Industries, Ltd. | Method and apparatus for controlling width and thickness of strip |
| WO1986000246A1 (en) * | 1984-06-29 | 1986-01-16 | SSAB SVENSKT STA^oL AB | Method to produce profiled bars |
| JPS6133702A (en) * | 1984-07-24 | 1986-02-17 | Sumitomo Metal Ind Ltd | Preupsetting device |
| JPS62279011A (en) * | 1986-05-23 | 1987-12-03 | Kawasaki Steel Corp | Plate width control method for hot rolling |
| JPH05154596A (en) * | 1991-11-30 | 1993-06-22 | Aichi Steel Works Ltd | Manufacture of deformed flat stainless steel |
| JPH06114404A (en) * | 1992-10-05 | 1994-04-26 | Sumitomo Metal Ind Ltd | Manufacture of metallic sheet small in edge drop |
| JPH06154803A (en) * | 1992-11-18 | 1994-06-03 | Aichi Steel Works Ltd | Manufacture of angle bar |
| JPH10328708A (en) * | 1997-06-06 | 1998-12-15 | Nkk Corp | Hot rolling equipment train and method for rolling hot rolled steel strip |
| CN1370638A (en) * | 2001-01-31 | 2002-09-25 | 摩根建设公司 | High speed finishing unit |
| CN209035113U (en) * | 2018-11-14 | 2019-06-28 | 南通金轮智能装备研发有限公司 | A kind of finishing rolling mill for I-shaped steel rolling |
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