CN104826865B - A kind of method and device for preparing composite metal plate - Google Patents
A kind of method and device for preparing composite metal plate Download PDFInfo
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- CN104826865B CN104826865B CN201510237504.XA CN201510237504A CN104826865B CN 104826865 B CN104826865 B CN 104826865B CN 201510237504 A CN201510237504 A CN 201510237504A CN 104826865 B CN104826865 B CN 104826865B
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- 239000002131 composite material Substances 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 46
- 229910052751 metal Inorganic materials 0.000 title abstract description 8
- 239000002184 metal Substances 0.000 title abstract description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 85
- 238000010438 heat treatment Methods 0.000 claims abstract description 71
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 50
- 230000009467 reduction Effects 0.000 claims abstract description 49
- 229910052742 iron Inorganic materials 0.000 claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims description 75
- 238000001816 cooling Methods 0.000 claims description 39
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 38
- 239000002905 metal composite material Substances 0.000 claims description 32
- 238000007789 sealing Methods 0.000 claims description 28
- 239000011261 inert gas Substances 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 20
- 238000003825 pressing Methods 0.000 claims description 15
- 230000001681 protective effect Effects 0.000 claims description 13
- 238000007788 roughening Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 210000003746 feather Anatomy 0.000 abstract 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 58
- 239000010962 carbon steel Substances 0.000 description 58
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 19
- 229910052802 copper Inorganic materials 0.000 description 19
- 239000010949 copper Substances 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- 239000001257 hydrogen Substances 0.000 description 10
- 229910052739 hydrogen Inorganic materials 0.000 description 10
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 238000005098 hot rolling Methods 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000000571 coke Substances 0.000 description 5
- 238000013329 compounding Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 238000005253 cladding Methods 0.000 description 4
- DJFBJKSMACBYBD-UHFFFAOYSA-N phosphane;hydrate Chemical compound O.P DJFBJKSMACBYBD-UHFFFAOYSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- AHADSRNLHOHMQK-UHFFFAOYSA-N methylidenecopper Chemical compound [Cu].[C] AHADSRNLHOHMQK-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
-
- 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
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B47/00—Auxiliary arrangements, devices or methods in connection with rolling of multi-layer sheets of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a kind of method and device for preparing composite metal plate, including：Iron scale to the first slab, the second slab interface to be composite is processed, the interface to be composite of the slab of feather plucking first and the second slab；The first slab and the second slab are overlapped, after being preheated to 200 DEG C to the first slab and the second slab, 800~850 DEG C is heated to；It is that the reducing gas that 5%~20%, temperature is 600~950 DEG C is reduced to the scale on surface of the first slab and the second slab using concentration, reduction temperature is not less than 800 DEG C, and the time is 15~20min；The first slab and the second slab after heating overlapping, while the pressure force for applying to be not more than 20000N presses 15~20min to the first slab and the second slab, forms slab to be composite to 950~1300 DEG C；Treating composite plate blanks carries out dephosphorization, multi- pass rolling formation composite plate blanks, and composite metal plate is formed after composite plate blanks are cooled down；In this way, being reduced using the iron scale that reducing gas treats composite plate blanks surface, eliminate while oxide influences on compound interface and improve production efficiency.
Description
Technical Field
The invention belongs to the technical field of steel smelting, and particularly relates to a method and a device for preparing a metal composite plate.
Background
The metal composite board is a novel material compounded by two or more different metal materials through a special process. Compared with single metal component, the metal composite board after reasonable design and combination combines the advantages of the metal components, and can obtain mechanical, physical and chemical properties which are not possessed by single metal. At present, the metal composite plate has been widely applied in the fields of aerospace, petroleum, chemical engineering, metallurgy, machinery, automobiles, ships, buildings and the like.
The metal composite plate has a certain difficulty in preparation due to the large performance difference among materials. The current preparation method mainly comprises the following steps: there are explosive cladding, brazing cladding and rolling cladding. The rolling and cladding method is one of the most widely used methods, and is a method in which two or more kinds of metals having clean surfaces are brought into contact with each other, and metallurgical bonding is achieved by diffusion between atoms through heating or plastic deformation under a strong pressure of a rolling mill. In practice, hot rolling compounding is mostly adopted, and the compounding effect is influenced by the severe oxidation of a compounding interface in the hot rolling heating process. In order to reduce the oxidation of the composite interface, methods such as interface protection or vacuum rolling and the like are mostly adopted in the prior art, but the method is complex to operate, requires additional special equipment and is not beneficial to realizing on-line continuous composite rolling production.
Based on the above, there is a need for a method and a device for reducing oxidation of a composite interface of a metal composite plate and considering how to realize continuous composite rolling, so as to ensure efficient and continuous composite rolling production of a plate blank.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a method and a device for preparing a metal composite plate, which are used for solving the technical problem that continuous composite rolling can not be realized while the oxidation of a composite interface of the metal composite plate is reduced when the metal composite plate is prepared in the prior art.
The invention provides a method for preparing a metal composite plate, which comprises the following steps:
processing iron scales on to-be-compounded interfaces of a first plate blank and a second plate blank, and roughening the to-be-compounded interface of the first plate blank and the to-be-compounded interface of the second plate blank;
superposing the first plate blank and the second plate blank, preheating the superposed first plate blank and the superposed second plate blank to 200 ℃, and heating to 800-850 ℃;
reducing the surface iron scales of the first plate blank and the second plate blank after superposition by using reducing gas with the concentration of 5-20% and the temperature of 600-950 ℃, wherein the reducing temperature is not less than 800 ℃, and the reducing time is 15-20 min;
heating the first plate blank and the second plate blank after superposition to 950-1300 ℃, and simultaneously applying a pressing force not more than 20000N to press the first plate blank and the second plate blank for 15-20 min in the heating process to form a plate blank to be compounded;
and carrying out dephosphorization and multi-pass rolling on the composite plate blank to form a composite plate blank, and cooling the composite plate blank to form the metal composite plate.
In the above scheme, the performing multiple rolling on the plate blank to be composited comprises:
and controlling the reduction rate of the first pass of rough rolling to be not less than 50%, and performing multi-pass rolling on the plate blank to be compounded for the finish rolling pass to be 4-6.
In the above scheme, the cooling the composite slab includes: and cooling the composite plate blank by utilizing a laminar flow cooling process.
The present invention also provides an apparatus for manufacturing a metal composite plate, the apparatus comprising:
the first roller way is used for processing the iron oxide scales on the to-be-compounded interface of the first plate blank through a first brush roller and a first sealed water tank and roughening the to-be-compounded interface of the first plate blank;
the second roller way is used for treating iron oxide scales on the interface to be composited of the second plate blank through a second brush roller and a second sealed water tank and roughening the interface to be composited of the second plate blank;
a billet inlet guide roller for guiding the first slab and the second slab which are overlapped into a preheating furnace;
the preheating furnace is used for preheating the superposed first slab and the superposed second slab to 200 ℃;
the heating furnace is used for heating the superposed first plate blank and the superposed second plate blank to 800-850 ℃;
the reducing furnace is used for reducing the surface iron oxide scales of the superposed first slab and second slab by using reducing gas with the concentration of 5-20% and the temperature of 600-950 ℃, and the reducing time is 15-20 min;
the high-temperature multi-head press machine is used for pressing the first plate blank and the second plate blank for 15-20 min by using a pressing force not greater than 20000N to form a plate blank to be compounded;
the heater is used for controlling the reduction temperature to be not less than 800 ℃ and heating the plate blank to be compounded to 950-1300 ℃;
the high-pressure water dephosphorization machine is used for carrying out dephosphorization on the composite plate blank to be composited;
the rolling mill inlet guide roller is used for guiding the dephosphorized composite plate blank to be combined into a rolling mill;
and the rolling mill is used for carrying out multi-pass rolling on the plate blank to be compounded.
In the above scheme, the apparatus further comprises: a first inlet seal pilot; wherein,
the first inlet sealing guide nozzle is connected with one end of the preheating furnace and used for ensuring the sealing performance of the reducing furnace.
In the above scheme, the apparatus further comprises:
a first gas inlet conduit for introducing a high temperature inert gas into the preheat furnace;
a first gas outlet conduit for conducting the high temperature inert gas out of the preheat furnace.
In the above scheme, the apparatus further comprises:
a second gas inlet duct for introducing a high temperature inert gas into the furnace;
and the second gas outlet pipeline is used for guiding the high-temperature inert gas out of the heating furnace.
In the above scheme, the apparatus further comprises:
a third gas inlet duct for introducing the reducing gas into the reduction furnace;
a third gas outlet duct for conducting the reducing gas out of the reduction furnace.
In the above scheme, the rolling mill comprises: a roughing mill and a finishing mill; wherein,
the roughing mill is used for controlling the reduction rate of the first pass of roughing rolling to be not less than 50%, and carrying out first pass rolling on the plate blank to be compounded;
the finishing mill is used for carrying out multi-pass rolling on the plate blank to be compounded for 4-6 passes.
In the above scheme, the apparatus further comprises:
a fourth gas inlet duct for introducing a protective gas into the mill;
a fourth gas outlet conduit for conducting the protective gas out of the rolling mill.
The invention provides a method and a device for preparing a metal composite plate, wherein the method comprises the following steps: processing iron scales on the surfaces of a first plate blank and a second plate blank, and roughening an interface to be composited of the first plate blank and an interface to be composited of the second plate blank; superposing the first plate blank and the second plate blank, preheating the superposed first plate blank and the superposed second plate blank to 200 ℃, and heating to 800-850 ℃; reducing the surface iron scales of the first plate blank and the second plate blank after superposition by using reducing gas with the concentration of 5-20% and the temperature of 600-950 ℃, wherein the reducing temperature is not less than 800 ℃, and the reducing time is 15-20 min; heating the first plate blank and the second plate blank after superposition to 950-1300 ℃, and simultaneously applying a pressing force not more than 20000N to press the composite plate blank for 15-20 min in the heating process to form a plate blank to be compounded; carrying out dephosphorization and multi-pass rolling on the composite plate blank to be compounded to form a composite plate blank, and cooling the composite plate blank to form the metal composite plate; therefore, the reducing gas is adopted to reduce the iron scale on the surface of the composite plate blank, so that the influence of the interface oxide on the compounding during the compounding is eliminated; and the on-line continuous composite rolling production of the plate blank can be realized, and the production efficiency of the composite plate blank is improved. In addition, in the process of reducing and heating the surface of the plate blank, the method applies pressure to the plate blank, the atomic diffusion effect of the composite interface is obvious under strong mechanical pressure, the interface bonding strength is high, and the quality of the metal composite plate is improved.
Drawings
Fig. 1 is a schematic flow chart of a method for manufacturing a metal composite plate according to an embodiment of the present invention;
fig. 2 is a schematic overall structure diagram of an apparatus for manufacturing a metal composite plate according to a second embodiment of the present invention.
Detailed Description
The invention provides a method and a device for preparing a metal composite plate, which aim to reduce the oxidation of a composite interface of the metal composite plate, simultaneously realize continuous composite rolling and improve the production efficiency and the quality of the metal composite plate when preparing the metal composite plate, wherein the method comprises the following steps: processing iron scales on to-be-compounded interfaces of a first plate blank and a second plate blank, and roughening the to-be-compounded interface of the first plate blank and the to-be-compounded interface of the second plate blank; superposing the first plate blank and the second plate blank, preheating the superposed first plate blank and the superposed second plate blank to 200 ℃, and heating to 800-850 ℃; reducing the surface iron scales of the first plate blank and the second plate blank after superposition by using reducing gas with the concentration of 5-20% and the temperature of 600-950 ℃, wherein the reducing temperature is not less than 800 ℃, and the reducing time is 15-20 min; heating the first plate blank and the second plate blank after superposition to 950-1300 ℃, and simultaneously applying a pressing force not more than 20000N to press the first plate blank and the second plate blank for 15-20 min in the heating process to form a plate blank to be compounded; and carrying out dephosphorization and multi-pass rolling on the composite plate blank to form a composite plate blank, and cooling the composite plate blank to form the metal composite plate.
The technical solution of the present invention is further described in detail by the accompanying drawings and the specific embodiments.
Example one
The present embodiment provides a method of manufacturing a metal composite plate, as shown in fig. 1, the method including the steps of:
and 110, processing iron scales on the surfaces of the first plate blank and the second plate blank, and roughening an interface to be composited of the first plate blank and an interface to be composited of the second plate blank.
In the step, the first plate blank is placed on a first roller way, a first brush roller and a first sealing groove are arranged on the first roller way, and iron oxide scales on the to-be-composited interface of the first plate blank are brushed away by using the first brush roller and the first sealing groove, and the to-be-composited interface of the first plate blank is roughened.
And placing the second plate blank on a second roller way, wherein a second brush roller and a second sealing groove are arranged on the second roller way, and the second brush roller and the second sealing groove are utilized to brush away iron oxide scales on the surface of the second plate blank and roughen an interface to be composited of the second plate blank.
Here, the first slab may be a base plate, and the second slab may be a cover plate; the first slab and the second slab have the same specification.
Step 111, overlapping the first plate blank and the second plate blank, preheating the overlapped first plate blank and the overlapped second plate blank to 200 ℃, and heating to 800-850 ℃;
in this step, the second slab is stacked on the first slab, the first slab and the second slab, which are stacked, are introduced into a preheating furnace through a slab entrance guide roller, and the first slab and the second slab, which are stacked, are preheated to 200 ℃. And introducing the preheated first plate blank and the preheated second plate blank into a heating furnace, and heating the superposed first plate blank and the superposed second plate blank to 800-850 ℃.
And when the first plate blank and the second plate blank are preheated, high-temperature inert gas is simultaneously introduced into the preheating furnace, so that excessive iron scales are prevented from being produced on the to-be-compounded interface of the overlapped first plate blank and the second plate blank. Wherein the inert gas may include: nitrogen, hydrogen, and the like.
And coke is laid below a hearth roller of the heating furnace to reduce the oxygen concentration in the heating furnace, and when the overlapped first plate blank and the second plate blank are heated, high-temperature inert gas is introduced into the heating furnace at the same time, so that excessive iron scales are prevented from being produced on the to-be-composited interfaces of the overlapped first plate blank and the second plate blank during preheating. Wherein the length of the preheating furnace is 10-12 meters; the length of the heating furnace is 10-12 meters.
And 112, reducing the surface iron oxide scales of the superposed first slab and second slab by using a reducing gas with the concentration of 5-20% and the temperature of 600-950 ℃.
In the step, after the first slab and the second slab are heated to 800-850 ℃, the first slab and the second slab enter a reduction furnace, and reduction gas with the concentration of 5% -20% and the temperature of 600-950 ℃ is introduced into the reduction furnace to reduce the surface iron oxide scales of the superposed first slab and second slab. The reduction temperature is not less than 800 ℃, heat preservation can be carried out through the heat preservation layer of the reduction furnace, and the reduction time is 15-20 min. The reducing gas may include: hydrogen, carbon monoxide, and the like. In the reduction process, the sealing performance of the reduction furnace can be ensured through the first inlet sealing guide nozzle.
And 113, carrying out primary pressing on the first plate blank and the second plate blank for 15-20 min by using a pressing force not greater than 20000N to form a composite plate blank.
In this step, after the superimposed first slab and second slab are reduced, a reducing gas is still introduced into the reducing furnace. And heating the reducing furnace by a heater, and heating the plate blank to be composited to 950-1300 ℃. And in the heating process, simultaneously applying a pressing force not more than 20000N by using a press machine to press the first plate blank and the second plate blank for 15-20 min to form a plate blank to be compounded. Preferably, the pressing time is 15 min. The press machine is a high-temperature multi-head press machine and is arranged in the gap between the upper roller way and the lower roller way of the reducing furnace.
And step 114, carrying out dephosphorization and multi-pass rolling on the composite plate blank to form a composite plate blank, and cooling the composite plate blank to form the metal composite plate.
In the step, after the composite plate blank is discharged from the reduction furnace, a high-pressure water dephosphorizing machine is used for dephosphorizing the composite plate blank, and iron oxide scales on the surface of the composite plate blank are eliminated. And guiding the plate blank to be compounded into a rolling mill for rolling through an inlet guide roller of the rolling mill. Specifically, the first-pass reduction rate of rough rolling is controlled to be not less than 50%, the finish rolling pass is controlled to be 4-6, the composite plate blank is subjected to multi-pass rolling, and the composite plate blank or the composite plate coil is formed through heat treatment. And in the rolling process, introducing protective gas into the rolling mill. Wherein the protective gas may include: nitrogen, argon, and the like.
And finally, cooling the composite plate blank by utilizing a laminar cooling process to form the metal composite plate. The laminar cooling process is an after-rolling on-line control cooling process which is carried out by adopting a laminar flowing hot rolled steel plate or strip steel. Specifically, a plurality of laminar flow headers are arranged above an output roller way of a finishing mill to form a cooling belt, and the composite plate blank is subjected to accelerated cooling through the cooling belt after being subjected to hot rolling.
According to the method for preparing the metal composite plate, the iron oxide scale on the surface of the composite plate blank is reduced by adopting the reducing gas, so that the influence of an interface oxide on the composition during the composition is eliminated; and the on-line continuous composite rolling production of the plate blank can be realized, and the production efficiency of the composite plate blank is improved. In addition, in the process of reducing and heating the surface of the plate blank, the method applies pressure to the plate blank, the atomic diffusion effect of the composite interface is obvious under strong mechanical pressure, the interface bonding strength is high, and the quality of the metal composite plate is improved.
Example two
Corresponding to the first embodiment, this embodiment also provides an apparatus for manufacturing a metal plate, as shown in fig. 2, the apparatus including: the device comprises a first roller way 1, a first brush roller 2, a first sealed water tank 3, a second roller way 4, a second brush roller 5, a second sealed water tank 6, a billet inlet guide roller 7, a preheating furnace 8, a heating furnace 9, a reducing furnace 10, a high-temperature multi-head press 11, a heater 12, a high-pressure water phosphorus removal machine 13, a rolling mill inlet guide roller 14 and a rolling mill 15; wherein,
the first roller way 1 is provided with a first brush roller 2 and a first sealing groove 3, and when the first plate blank runs on the first roller way 1, the first brush roller 2 and the first sealing groove 3 are used for brushing iron oxide scales on an interface to be composited of the first plate blank and roughening the interface to be composited of the first plate blank. The first brush roller 2 includes two.
And a second brush roller 5 and a second sealing groove 6 are arranged on the second roller way 4, and when the second plate blank runs on the second roller way 4, the second brush roller 5 and the second sealing groove 6 are used for brushing iron oxide scales on an interface to be composited of the second plate blank and roughening the interface to be composited of the second plate blank. The second brush roller 5 includes two.
Here, the first slab may be a base plate, and the second slab may be a cover plate; the first slab and the second slab have the same specification.
After the first slab and the second slab are roughened, the second slab is stacked on the first slab by using a hammock, and the billet inlet guide roller 7 is used for guiding the stacked first slab and second slab into a preheating furnace 8;
the preheating furnace 8 is used for preheating the superposed first slab and the superposed second slab to 200 ℃; and after preheating, guiding the preheated first plate blank and the preheated second plate blank into a heating furnace 9, wherein the heating furnace 9 is used for heating the superposed first plate blank and the superposed second plate blank to 800-850 ℃.
Here, the apparatus further includes: a first inlet seal pilot nozzle 16, a first gas inlet conduit 17, a first gas outlet conduit 18, a second gas inlet conduit 19, a second gas outlet conduit 20, a third gas inlet conduit 21, a third gas outlet conduit 22; wherein,
the first inlet sealing guide nozzle 16 is connected with one end of the preheating furnace 8, the other end of the preheating furnace 8 is connected with one end of the heating furnace 9, and the other end of the heating furnace 9 is connected with one end of the reducing furnace 10. The first inlet seal guide nozzle 16 is used to ensure sealing performance in the reduction furnace 10.
Coke is laid under a hearth roller of the preheating furnace 8 to reduce the oxygen concentration in the preheating furnace 8, and when the overlapped first slab and the second slab are preheated, high-temperature inert gas is introduced into the preheating furnace 8 through the first gas inlet pipeline 17, so that excessive iron scales are prevented from being produced on the to-be-composited interfaces of the overlapped first slab and the second slab. When production is complete, the high temperature inert gas can be discharged from the preheating furnace 8 through the first gas outlet conduit 18. Wherein the inert gas may include: nitrogen, hydrogen, and the like.
Coke is laid under the hearth roll of the heating furnace 9 to reduce the oxygen concentration in the heating furnace 9, it is right the first slab after the superimposition reaches during the heating of the second slab, high-temperature inert gas is introduced into the heating furnace 9 through a second gas inlet pipeline 19 at the same time, and when preheating is avoided, the first slab after the superimposition reaches the excessive iron scale of the interface production to be composited of the second slab. When the production is completed, the high-temperature inert gas can be discharged out of the heating furnace 9 through the second gas outlet pipe 20. Wherein the length of the preheating furnace 8 is 10-12 meters; the length of the heating furnace 9 is 10-12 meters.
After the first and second overlapped slabs are heated to 800-850 ℃, the first and second overlapped slabs are introduced into a reduction furnace 10, and a reducing gas with the concentration of 5-20% and the temperature of 600-950 ℃ is introduced into the reduction furnace 10 through a third gas inlet pipeline 21 to reduce the surface iron scales of the first and second overlapped slabs. Here, the reduction temperature may be controlled to not less than 800 ℃ using the heater 12. The reducing gas may include: hydrogen, carbon monoxide and the like, and the reduction time is 15-20 min. After the reduction is completed, the reducing gas can be led out of the reduction furnace 10 through the third gas outlet duct 22. The third gas inlet duct 21 comprises two and the third gas outlet duct 22 comprises two.
Further, after the reduction furnace 10 reduces the first slab and the second slab which are stacked, a reducing gas is still introduced into the reduction furnace. Heating the reducing furnace 10 by using a heater 12, and heating the superposed first slab and second slab to 950-1300 ℃. While heating, the press machine 11 is used for applying a pressing force not greater than 20000N to press the first slab and the second slab for 15-20 min, preferably 15min, so as to form a slab to be compounded; the press machine 11 is a high-temperature multi-head press machine, and the press machine 11 is arranged in the gaps between the upper and lower rolls of the reduction furnace 10.
Here, the apparatus further includes: and the reduction furnace heat-insulating layer 23 is used for insulating the reduction furnace 10.
When the first slab and the second slab form a slab to be composited, the high-pressure water phosphorus removal machine 13 is used for removing phosphorus from the slab to be composited to eliminate iron oxide scales on the surface of the slab to be composited.
And after the dephosphorization of the composite slab is completed, guiding the composite slab into a rolling mill 15 through the rolling mill inlet guide roller 14, and performing multi-pass rolling on the composite slab.
Specifically, the rolling mill 15 includes: a roughing mill 151 grade finishing mill 152; the roughing mill 151 is used for controlling the reduction rate of the first pass of roughing rolling to be not less than 50%, and performing first pass rolling on the composite plate blank; the finishing mill 152 is used for performing multi-pass rolling on the composite plate blank for 4-6 passes.
Here, the apparatus further includes: a fourth gas inlet conduit 24, a fourth gas outlet conduit 25 and a second inlet seal pilot nozzle 26; wherein,
when the rolling mill 15 rolls the composite slab, protective gas is introduced into the rolling mill 15 through a fourth gas inlet duct 24, and when rolling is completed, protective gas is led out of the rolling mill 15 through a fourth gas outlet duct 25. Wherein the protective gas may include: nitrogen, argon, and the like.
In addition, the second inlet seal guide 26 is connected to the inlet of the rolling mill 15 to prevent oxygen from entering the intermediate layer of the composite slab during rolling of the composite slab, which may result in scale being produced in the intermediate layer and not being able to be rolled better.
And forming a composite plate blank after rolling, and cooling the composite plate blank by utilizing a laminar flow cooling process to form the metal composite plate. The laminar cooling process is an after-rolling on-line control cooling process which is carried out by adopting a laminar flowing hot rolled steel plate or strip steel. Specifically, a plurality of laminar flow headers are arranged above an output roller way of a finishing mill to form a cooling belt, and the composite plate blank is subjected to accelerated cooling through the cooling belt after being subjected to hot rolling.
EXAMPLE III
In order to better understand the technical solution of the present invention, the present embodiment further describes the present invention with reference to practical applications.
When the method provided by the invention is adopted to prepare the carbon steel-carbon steel composite plate, the specific implementation process is as follows:
firstly, a first common carbon steel plate blank is placed on a first roller way, a first brush roller and a first sealing groove are arranged on the first roller way, iron oxide scales on an interface to be compounded of the first common carbon steel plate blank are brushed off by the first brush roller and the first sealing groove, and the interface to be compounded of the first common carbon steel plate blank is roughened.
And placing the second common carbon steel plate blank on a second roller way, wherein a second brush roller and a second sealing groove are arranged on the second roller way, and brushing iron oxide scales on the surface of the second common carbon steel plate blank by using the second brush roller and the second sealing groove and roughening the interface to be composited of the second common carbon steel plate blank.
Here, the first and second common carbon steel slabs have the same specification; the length is 2400mm, the width is 2000mm, and the thickness is 220 mm; the first and second common carbon steel slabs may be made of Q345.
Secondly, stacking the second common carbon steel plate blank on the first common carbon steel plate blank through a hammock, guiding the overlapped first common carbon steel plate blank and the second common carbon steel plate blank into a preheating furnace through a steel blank inlet guide roller, and preheating the overlapped first common carbon steel plate blank and the second common carbon steel plate blank to 200 ℃. And (3) introducing the preheated first common carbon steel plate blank and the preheated second common carbon steel plate blank into a heating furnace, and heating the superposed first common carbon steel plate blank and the superposed second common carbon steel plate blank to 800 ℃.
And when the first common carbon steel slab and the second common carbon steel slab are preheated, high-temperature inert gas is simultaneously introduced into the preheating furnace, so that excessive iron scales are prevented from being produced on the to-be-compounded interface of the superposed first common carbon steel slab and the superposed second common carbon steel slab. Wherein the inert gas may include: nitrogen, hydrogen, and the like.
And coke is laid below a hearth roller of the heating furnace to reduce the oxygen concentration in the heating furnace, and when the overlapped first plate blank and the second plate blank are heated, high-temperature inert gas is introduced into the heating furnace at the same time, so that excessive iron scales are prevented from being produced on the to-be-composited interfaces of the overlapped first plate blank and the second plate blank during preheating. Wherein the length of the preheating furnace is 10-12 meters; the length of the heating furnace is 10-12 meters.
And then, after the first common carbon steel plate blank and the second common carbon steel plate blank are heated to 800 ℃, introducing the first common carbon steel plate blank and the second common carbon steel plate blank into a reduction furnace, and reducing the iron scales on the surfaces of the superposed first common carbon steel plate blank and the second common carbon steel plate blank by introducing a reducing gas with the concentration of 20% and the temperature of 850 ℃ into the reduction furnace, wherein the reduction time is 15 min. Here, the reduction temperature may be maintained by the reduction furnace insulation layer, and the temperature in the reduction furnace is 900 ℃. The reducing gas may include: hydrogen, carbon monoxide, and the like. In the embodiment, the reducing gas is hydrogen, and the sealing performance of the reducing furnace can be ensured through the first inlet sealing guide nozzle in the reducing process.
And after the first common carbon steel plate blank and the second common carbon steel plate blank which are overlapped are reduced, still introducing reducing gas into the reducing furnace, heating the reducing furnace by a heater, heating the first common carbon steel plate blank and the second common carbon steel plate blank which are overlapped to 1250 ℃, and simultaneously applying 18000N pressing force to press the first common carbon steel plate blank and the second common carbon steel plate blank for 15min by using a press machine in the heating process to form a plate blank to be compounded. The press machine is a high-temperature multi-head press machine.
And after the composite plate blank is discharged from the reduction furnace, removing phosphorus from the composite plate blank by using a high-pressure water phosphorus removal machine, and eliminating iron scales on the surface of the composite plate blank. And guiding the plate blank to be compounded into a rolling mill for rolling through an inlet guide roller of the rolling mill. Specifically, the first pass of rough rolling is controlled to have a reduction ratio of 50%, the last pass of finish rolling is controlled to have 4 passes, the composite plate blank is rolled to have a thickness of 120mm, and the composite plate blank or the composite plate coil is formed through heat treatment. And in the rolling process, introducing protective gas into the rolling mill. Wherein the protective gas may include: nitrogen, argon, and the like.
And finally, cooling the composite plate blank by utilizing a laminar cooling process to form the carbon steel-carbon steel composite plate. Here, the laminar cooling process is a post-rolling on-line control cooling process using a laminar flow hot rolled steel sheet or strip. Specifically, a plurality of laminar flow headers are arranged above an output roller way of a finishing mill to form a cooling belt, and the composite plate blank is subjected to accelerated cooling through the cooling belt after being subjected to hot rolling.
Example four
The embodiment is a specific implementation process for preparing the copper-carbon steel composite plate by adopting the method provided by the invention.
Firstly, a copper plate blank is placed on a first roller way, a first brush roller and a first sealing groove are arranged on the first roller way, iron oxide scales on an interface to be compounded of the copper plate blank are brushed off by the first brush roller and the first sealing groove, and the interface to be compounded of the copper plate blank is roughened.
And placing the common carbon steel plate blank on a second roller way, wherein a second brush roller and a second sealing groove are arranged on the second roller way, and iron oxide scales on the surface of the common carbon steel plate blank are brushed off by utilizing the second brush roller and the second sealing groove, and the to-be-compounded interface of the common carbon steel plate blank is roughened.
Here, the specifications of the copper plate blank and the common carbon steel plate blank are completely the same; the length is 2400mm, the width is 1200mm, and the thickness is 220 mm; the common carbon steel slab may be made of Q345.
Secondly, the copper plate blanks are stacked on the common carbon steel plate blanks through a hammock, the overlapped copper plate blanks and the common carbon steel plate blanks are guided into a preheating furnace through a steel blank inlet guide roller, and the overlapped copper plate blanks and the common carbon steel plate blanks are preheated to 200 ℃. And (3) introducing the preheated copper plate blank and the common carbon steel plate blank into a heating furnace, and heating the superposed copper plate blank and the common carbon steel plate blank to 800 ℃.
And when the copper slab and the common carbon steel slab are preheated, high-temperature inert gas is simultaneously introduced into the preheating furnace, so that excessive iron scales are prevented from being produced on the to-be-compounded interface of the superposed copper slab and the common carbon steel slab. Wherein the inert gas may include: nitrogen, hydrogen, and the like.
Coke is laid under a hearth roller of the heating furnace to reduce the oxygen concentration in the heating furnace, and when the copper plate blank and the common carbon steel plate blank are heated, high-temperature inert gas is introduced into the heating furnace at the same time, so that excessive iron scales are prevented from being produced on the to-be-compounded interfaces of the copper plate blank and the common carbon steel plate blank after being superposed during preheating. Wherein the length of the preheating furnace is 10-12 meters; the length of the heating furnace is 10-12 meters.
And then, after the copper plate blank and the ordinary carbon steel plate blank are heated to 800 ℃, introducing the copper plate blank and the ordinary carbon steel plate blank into a reduction furnace, and introducing a reduction gas with the concentration of 18% and the temperature of 850 ℃ into the reduction furnace to reduce the surface iron scale of the superposed copper plate blank and the ordinary carbon steel plate blank for 20 min. Here, the reduction temperature may be maintained by the reduction furnace insulation layer, and the temperature in the reduction furnace is 900 ℃. The reducing gas may include: hydrogen, carbon monoxide, and the like. In the embodiment, the reducing gas is hydrogen, and the sealing performance of the reducing furnace can be ensured through the first inlet sealing guide nozzle in the reducing process.
And after the copper plate blank and the common carbon steel plate blank which are overlapped are reduced, still introducing reducing gas into the reducing furnace, heating the reducing furnace by a heater, heating the copper plate blank and the common carbon steel plate blank to 1250 ℃, and simultaneously applying 20000N pressing force by a press machine to press the copper plate blank and the common carbon steel plate blank for 15min in the heating process to form a plate blank to be compounded. The press machine is a high-temperature multi-head press machine.
And after the composite plate blank is discharged from the reduction furnace, removing phosphorus from the composite plate blank by using a high-pressure water phosphorus removal machine, and eliminating iron scales on the surface of the composite plate blank. And guiding the plate blank to be compounded into a rolling mill for rolling through an inlet guide roller of the rolling mill. Specifically, the first pass of rough rolling is controlled to have a reduction ratio of 55%, the finish rolling pass is controlled to be 6 passes, the composite plate blank is rolled, the thickness of the composite plate blank is reduced to 20mm, and the composite plate blank or the composite plate coil is formed through heat treatment. And in the rolling process, introducing protective gas into the rolling mill. Wherein the protective gas may include: nitrogen, argon, and the like.
And finally, cooling the composite plate blank by utilizing a laminar flow cooling process to form the copper-carbon steel composite plate. Here, the laminar cooling process is a post-rolling on-line control cooling process using a laminar flow hot rolled steel sheet or strip. Specifically, a plurality of laminar flow headers are arranged above an output roller way of a finishing mill to form a cooling belt, and the composite plate blank is subjected to accelerated cooling through the cooling belt after being subjected to hot rolling.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (10)
1. A method of making a metal composite panel, the method comprising:
processing iron scales on to-be-compounded interfaces of a first plate blank and a second plate blank, and roughening the to-be-compounded interface of the first plate blank and the to-be-compounded interface of the second plate blank;
superposing the first plate blank and the second plate blank, preheating the superposed first plate blank and the superposed second plate blank to 200 ℃, and heating to 800-850 ℃;
reducing the surface iron scales of the first plate blank and the second plate blank after superposition by using reducing gas with the concentration of 5-20% and the temperature of 600-950 ℃, wherein the reducing temperature is not less than 800 ℃, and the reducing time is 15-20 min;
heating the first plate blank and the second plate blank after superposition to 950-1300 ℃, and simultaneously applying a pressing force not more than 20000N to press the first plate blank and the second plate blank for 15-20 min in the heating process to form a plate blank to be compounded;
and carrying out dephosphorization and multi-pass rolling on the composite plate blank to form a composite plate blank, and cooling the composite plate blank to form the metal composite plate.
2. The method according to claim 1, wherein the multi-pass rolling of the slab to be composited comprises:
and controlling the reduction rate of the first pass of rough rolling to be not less than 50%, and performing multi-pass rolling on the plate blank to be compounded for the finish rolling pass to be 4-6.
3. The method of claim 1, wherein the cooling the composite slab comprises: and cooling the composite plate blank by utilizing a laminar flow cooling process.
4. An apparatus for making a metal composite panel, the apparatus comprising:
the first roller way is used for processing the iron oxide scales on the to-be-compounded interface of the first plate blank through a first brush roller and a first sealed water tank and roughening the to-be-compounded interface of the first plate blank;
the second roller way is used for processing iron oxide scales on an interface to be compounded of a second plate blank through a second brush roller and a second sealed water tank and roughening the interface to be compounded of the second plate blank;
a billet inlet guide roller for guiding the first slab and the second slab which are overlapped into a preheating furnace;
the preheating furnace is used for preheating the superposed first slab and the superposed second slab to 200 ℃;
the heating furnace is used for heating the superposed first plate blank and the superposed second plate blank to 800-850 ℃;
the reducing furnace is used for reducing the surface iron oxide scales of the superposed first slab and second slab by using reducing gas with the concentration of 5-20% and the temperature of 600-950 ℃, and the reducing time is 15-20 min;
the high-temperature multi-head press machine is used for pressing the first plate blank and the second plate blank for 15-20 min by using a pressing force not greater than 20000N to form a plate blank to be compounded;
the heater is used for controlling the reduction temperature to be not less than 800 ℃ and heating the plate blank to be compounded to 950-1300 ℃;
the high-pressure water dephosphorization machine is used for carrying out dephosphorization on the composite plate blank to be composited;
the rolling mill inlet guide roller is used for guiding the dephosphorized composite plate blank to be combined into a rolling mill;
and the rolling mill is used for carrying out multi-pass rolling on the plate blank to be compounded.
5. The apparatus of claim 4, wherein the apparatus further comprises: a first inlet seal pilot; wherein,
the first inlet sealing guide nozzle is connected with one end of the preheating furnace and used for ensuring the sealing performance of the reducing furnace.
6. The apparatus of claim 4, wherein the apparatus further comprises:
a first gas inlet conduit for introducing a high temperature inert gas into the preheat furnace;
a first gas outlet conduit for conducting the high temperature inert gas out of the preheat furnace.
7. The apparatus of claim 4, wherein the apparatus further comprises:
a second gas inlet duct for introducing a high temperature inert gas into the furnace;
and the second gas outlet pipeline is used for guiding the high-temperature inert gas out of the heating furnace.
8. The apparatus of claim 4, wherein the apparatus further comprises:
a third gas inlet duct for introducing the reducing gas into the reduction furnace;
a third gas outlet duct for conducting the reducing gas out of the reduction furnace.
9. The apparatus of claim 4, wherein the rolling mill comprises: a roughing mill and a finishing mill; wherein,
the roughing mill is used for controlling the reduction rate of the first pass of roughing rolling to be not less than 50%, and carrying out first pass rolling on the plate blank to be compounded;
the finishing mill is used for carrying out multi-pass rolling on the plate blank to be compounded for 4-6 passes.
10. The apparatus of claim 4, wherein the apparatus further comprises:
a fourth gas inlet duct for introducing a protective gas into the mill;
a fourth gas outlet conduit for conducting the protective gas out of the rolling mill.
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| CN105414219B (en) * | 2015-12-31 | 2018-06-01 | 中国航空工业集团公司北京航空制造工程研究所 | A kind of preparation method of metal/intermetallic compound laminar composite |
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