CN113020258A - Manufacturing method of laminated super austenitic stainless steel-steel composite plate - Google Patents
Manufacturing method of laminated super austenitic stainless steel-steel composite plate Download PDFInfo
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- CN113020258A CN113020258A CN201911279904.1A CN201911279904A CN113020258A CN 113020258 A CN113020258 A CN 113020258A CN 201911279904 A CN201911279904 A CN 201911279904A CN 113020258 A CN113020258 A CN 113020258A
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- 239000002131 composite material Substances 0.000 title claims abstract description 78
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 15
- 239000010959 steel Substances 0.000 title claims abstract description 15
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims abstract description 80
- 238000005096 rolling process Methods 0.000 claims abstract description 40
- 238000003466 welding Methods 0.000 claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 31
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000003801 milling Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 abstract description 12
- 238000011282 treatment Methods 0.000 abstract description 11
- 239000003795 chemical substances by application Substances 0.000 abstract description 10
- 239000002905 metal composite material Substances 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 238000007142 ring opening reaction Methods 0.000 abstract 1
- 239000010953 base metal Substances 0.000 description 27
- 238000002360 preparation method Methods 0.000 description 9
- 239000011259 mixed solution Substances 0.000 description 7
- 238000004880 explosion Methods 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 4
- 235000019353 potassium silicate Nutrition 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 3
- 238000005219 brazing Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005253 cladding Methods 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 238000007778 shielded metal arc welding Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Classifications
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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
- B21B1/38—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
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- 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
- 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
-
- 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
- B21B2001/386—Plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/02—Austenitic rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A manufacturing method of a pack-rolled super austenitic stainless steel-steel composite plate belongs to the technical field of metal composite plate manufacturing processes. The process comprises the following steps: (1) firstly, selecting a steel plate and a super austenitic stainless steel clad layer with the same length and width dimensions, processing and cleaning the super austenitic stainless steel clad surface, and opening a ring-opening peripheral chamfer groove; (2) then the steel plate and the super austenitic stainless steel compound layer are oppositely stacked with the surface to be compounded, and the periphery of the steel plate and the super austenitic stainless steel compound layer is welded into a front blank; (3) performing surface processing and cleaning on the surfaces of the super austenitic stainless steel-steel composite layers of the two pre-billets, then stacking, coating a release agent between the two layers, and welding the two layers together to obtain a composite stacked rolled billet; (4) heating and rolling the composite overlapped and rolled blank; (5) and finally, carrying out heat treatment and other treatments on the super austenitic stainless steel-steel composite plate. The invention simplifies the blank processing technology in the existing super austenitic stainless steel-steel composite board manufacturing process, has good plate blank composite effect, reduces the difficulties of vacuum equipment and high vacuum degree control, and the like, and provides a method with simple working procedure, high efficiency and low cost for the manufacturing of the super austenitic stainless steel-steel composite board.
Description
Technical Field
The invention relates to a method for manufacturing a pack-rolled super austenitic stainless steel-steel composite plate, belonging to the technical field of manufacturing processes of metal composite plates.
Background
The metal laminar composite material is compounded by two or more layers of metals with different properties, and has excellent characteristics which are not possessed by the original single materials. By reasonably selecting the components of the laminate and a proper processing technology, the layered metal composite material meeting different requirements can be obtained, and the expensive composite layer metal can be replaced by the cheap base layer metal so as to reduce the cost. The method comprises the following steps: stainless steel-steel composite panels, copper-steel composite panels, titanium-steel composite panels, and the like. The super austenitic stainless steel in the stainless steel composite plate is a metal composite material with better performance and wider application, retains the corrosion resistance, wear resistance and other properties of the super austenitic stainless steel, has the characteristics of good formability, stretchability, heat conductivity and the like of carbon steel, and can be widely applied to the fields of metallurgy, shipbuilding, aerospace, machinery, national defense and the like.
Currently, several methods are commonly used for producing super austenitic stainless steel composite plates: brazing cladding method, explosion welding rolling method, and direct rolling method. The brazing compounding method is a method of placing brazing filler metal between the clad metal and the base metal, heating and applying pressure to combine the clad metal and the base metal, and the method is simple to operate, but the prepared composite board is not high in bonding strength and is suitable for metal composite boards with low requirements on the bonding strength; the explosion cladding method can instantly finish cladding of two metals with large difference of melting points, avoids generating intermetallic compounds on an interface, but the composite plate produced by the method has smaller size, poorer plate shape, unstable product quality, large energy consumption, environmental pollution and low yield; the explosion welding rolling method is a method of making blank by explosion and then rolling and forming by using a hot rolling unit, and is limited by the specification of the explosion-rolled composite blank, and the explosion process has the defects of large energy consumption, low production efficiency, environmental pollution and the like.
With the demand of social development, the demand of people for super austenitic stainless steel composite boards is continuously increased, so that the problems to be solved urgently in the industry are to improve the current technological means for producing the super austenitic stainless steel composite boards, reduce the technological difficulty for manufacturing the super austenitic stainless steel composite boards, reduce the production cost and improve the yield of the super austenitic stainless steel composite boards.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art of preparing the super austenitic stainless steel composite plate by the vacuum hot rolling composite method, and provides the manufacturing method of the super austenitic stainless steel composite plate, which has the advantages of simple and convenient working procedure, shorter period, higher efficiency and low cost.
The technical scheme for solving the technical problems is as follows: a manufacturing method of a pack-rolled super austenitic stainless steel composite plate is carried out according to the following steps:
(1) preparing a blank: selecting a base metal-1 and a super austenitic stainless steel clad layer-2 with approximately same length and width, processing a ring chamfer groove on the surfaces to be clad of the base metal-1 and the super austenitic stainless steel clad layer-2, removing oxide layers on the surfaces to be clad of the base metal-1 and the super austenitic stainless steel clad layer-2 by using a milling, planing or grinding method, cleaning the surfaces to be clad of the base metal-1 and the super austenitic stainless steel clad layer-2 by absolute ethyl alcohol and acetone in sequence, and drying by using cool air with the temperature lower than 30 ℃;
(2) welding a front blank: stacking the surfaces to be compounded of the cleaned and dried base metal-1 and the super austenitic stainless steel composite layer-2 relatively, and then performing circumferential sealing welding along the groove;
(3) preparing a pack-rolled composite blank: oppositely stacking the super austenitic stainless steel surfaces of the two front blanks, coating a separant-3 between the two layers, fully welding the heads of the adjacent stainless steel layers of the composite blanks by using super austenitic stainless steel welding rods after the separant is dried, and performing spot welding on the two side edges;
(4) heating and rolling: putting the laminated composite blank into a heating furnace to carry out heating control according to the production heating system of the multilayer metal; and rolling the heated and laminated composite blank, wherein the initial rolling temperature, the final rolling temperature and the cooling process after rolling are all executed according to the production process of the multilayer metal, the rolling speed is 0.2-2.5 m/s, and the total rolling reduction rate is more than or equal to 60%.
According to the manufacturing method of the super austenitic stainless steel composite plate, the rolled super austenitic stainless steel composite plate is subjected to heat treatment and other treatments according to the requirements of users, so that a finished product of the super austenitic stainless steel composite plate is obtained.
According to the manufacturing method of the super austenitic stainless steel composite board, the separant is a mixed solution of magnesium oxide and water glass (wt%) in a ratio of 1: 4-2: 3, and the painting thickness is 0.8-2 mm.
According to the manufacturing method of the pack-rolled super austenitic stainless steel composite plate, the heating temperature in the heating and rolling process is 1000-1180 ℃, the heat preservation is carried out in the furnace for 1-2.5 hours, the initial rolling temperature is 1020-1150 ℃, the first pass reduction rate is more than or equal to 22%, the first three pass accumulated reduction rate is more than or equal to 42%, and the final rolling temperature is 920-1060 ℃.
The invention has the beneficial effects that:
the invention overcomes the defects of the prior vacuum rolling method of the metal composite plate, greatly simplifies the vacuum rolling process and reduces the cost of the vacuum rolling method. The invention improves the current process means for producing the super austenitic stainless steel composite plate, greatly reduces the process difficulty for manufacturing the super austenitic stainless steel composite plate, obviously reduces the production cost, can greatly improve the yield of the super austenitic stainless steel composite plate, is a manufacturing method of the super austenitic stainless steel composite plate with simple and convenient working procedures, short period, high efficiency and low cost, makes contribution to meeting the market demand on the super austenitic stainless steel composite plate, and can be popularized and applied in the industry.
Drawings
FIG. 1 is a schematic representation of the structure of a super austenitic stainless steel-steel sheet composite blank according to the present invention, wherein: 1-base metal, 2-super austenitic stainless steel multiple layer and 3-separant.
Detailed Description
Example 1:
the hierarchical structure of the invention is as follows in sequence: the super austenitic stainless steel insulation material comprises a base metal 1, a super austenitic stainless steel composite layer 2, a separant 3, a super austenitic stainless steel composite layer 2 and a base metal 1. The preparation process of the invention comprises the following steps: blank preparation → welding of front blank → preparation of a pack-rolled composite blank → heating and rolling → subsequent treatment.
The invention is carried out according to the following steps:
(1) preparing a blank: the base metal 1 and the super austenitic stainless steel clad layer 2 with the same length and width dimensions are selected, and the base metal 1 is generally made of carbon structural steel. Processing a peripheral chamfer groove with the depth of 8mm and an angle of 45 degrees on the to-be-compounded surfaces of the base metal 1 and the super austenitic stainless steel compound layer 2, removing oxide layers on the to-be-compounded surfaces of the base metal 1 and the super austenitic stainless steel compound layer 2 by using a milling, planing or grinding method, and controlling the surface roughness to be less than or equal to 12.5 mu m; and washing the polished surface to be compounded with clear water, removing impurities on the surface, cleaning the surface to be compounded of the base metal 1 and the super austenitic stainless steel compound layer 2 with absolute ethyl alcohol and acetone, and drying by cold air.
(2) Welding a front blank: after the surfaces to be compounded of the base metal 1 and the super austenitic stainless steel compound layer 2 are oppositely stacked, welding the two layers of metals together by adopting stainless steel shielded metal arc welding; and performing sealing welding on the periphery in the sequence of 'length direction → the other long side → width direction → the other wide side', wherein the welding seams are welded in three layers, the welding seam on the upper layer is cooled and then welded on the lower layer, and the lower layer of arc starting point avoids the arc starting position of the upper layer.
(3) Preparing a pack-rolled composite blank: the super austenitic stainless steel clad layers 2 of the two front blanks are oppositely stacked, a layer of isolating agent 3 is coated in the middle, the isolating agent 3 is a mixed solution of magnesium oxide and water glass (wt%), the mixed solution is 1: 4-2: 3, the coating thickness is 0.8mm, after the isolating agent is dried, the super austenitic stainless steel welding rods are adopted to fully weld the heads of the adjacent super austenitic stainless steel clad layers 2 of the composite blanks, and the two side edges are subjected to spot welding.
(4) Heating and rolling: putting the laminated composite blank into a heating furnace, heating to 1100 ℃, preserving heat for 0.5 hour in the furnace, wherein the initial rolling temperature is 1000 ℃, and the first pass reduction rate is more than or equal to 13%; the cumulative reduction rate of the first three times is more than or equal to 32 percent, and the finishing temperature is 950 ℃. The rolling speed was set to 0.5 m/s.
(5) And (3) subsequent treatment: and carrying out heat treatment and other treatments on the super austenitic stainless steel composite plate according to the requirements of users to obtain a finished product of the super austenitic stainless steel composite plate.
Example 2:
the hierarchical structure of the invention is as follows in sequence: the super austenitic stainless steel insulation material comprises a base metal 1, a super austenitic stainless steel composite layer 2, a separant 3, a super austenitic stainless steel composite layer 2 and a base metal 1. The preparation process of the invention comprises the following steps: blank preparation → welding of front blank → preparation of a pack-rolled composite blank → heating and rolling → subsequent treatment.
The invention is carried out according to the following steps:
(1) preparing a blank: the base metal 1 and the super austenitic stainless steel clad layer 2 with the same length and width dimensions are selected, and the base metal 1 is generally made of carbon structural steel. Processing a peripheral chamfer groove with the depth of 10mm and the angle of 45 degrees on the to-be-compounded surfaces of the base metal 1 and the super austenitic stainless steel compound layer 2, removing oxide layers on the to-be-compounded surfaces of the base metal 1 and the super austenitic stainless steel compound layer 2 by using a milling, planing or grinding method, and controlling the surface roughness to be less than or equal to 12.5 mu m; and washing the polished surface to be compounded with clear water, removing impurities on the surface, cleaning the surface to be compounded of the base metal 1 and the super austenitic stainless steel compound layer 2 with absolute ethyl alcohol and acetone, and drying by cold air.
(2) Welding a front blank: after the surfaces to be compounded of the base metal 1 and the super austenitic stainless steel compound layer 2 are oppositely stacked, welding the two layers of metals together by adopting stainless steel shielded metal arc welding; and performing sealing welding on the periphery in the sequence of 'length direction → the other long side → width direction → the other wide side', wherein the welding seams are welded in three layers, the welding seam on the upper layer is cooled and then welded on the lower layer, and the lower layer of arc starting point avoids the arc starting position of the upper layer.
(3) Preparing a pack-rolled composite blank: the super austenitic stainless steel clad layers 2 of the two front blanks are oppositely stacked, a layer of isolating agent 3 is coated in the middle, the isolating agent 3 is a mixed solution of magnesium oxide and water glass (wt%), the mixed solution is 1: 4-2: 3, the coating thickness is 1.0mm, after the isolating agent is dried, the super austenitic stainless steel welding rods are adopted to fully weld the heads of the adjacent super austenitic stainless steel clad layers 2 of the composite blanks, and the two side edges are subjected to spot welding.
(4) Heating and rolling: putting the overlapped and rolled composite blank into a heating furnace, heating to 1150 ℃, preserving heat in the furnace for 1.5 hours, wherein the rolling temperature is 1100 ℃, and the first pass reduction rate is more than or equal to 15%; the cumulative reduction rate of the first three times is more than or equal to 35 percent, and the finishing temperature is 980 ℃. The rolling speed was set to 1.0 m/s.
(5) And (3) subsequent treatment: and carrying out heat treatment and other treatments on the super austenitic stainless steel composite plate according to the requirements of users to obtain a finished product of the super austenitic stainless steel composite plate.
Example 3:
the hierarchical structure of the invention is as follows in sequence: the super austenitic stainless steel insulation material comprises a base metal 1, a super austenitic stainless steel composite layer 2, a separant 3, a super austenitic stainless steel composite layer 2 and a base metal 1. The preparation process of the invention comprises the following steps: blank preparation → welding of front blank → preparation of a pack-rolled composite blank → heating and rolling → subsequent treatment.
The invention is carried out according to the following steps:
(1) preparing a blank: the base metal 1 and the super austenitic stainless steel clad layer 2 with the same length and width dimensions are selected, and the base metal 1 is generally made of carbon structural steel. Processing a 12 mm-deep 45-degree circumferential chamfer groove on the surfaces to be compounded of the base metal 1 and the super austenitic stainless steel composite layer 2, removing oxide layers on the surfaces to be compounded of the base metal 1 and the super austenitic stainless steel composite layer 2 by using a milling, planing or grinding method, and controlling the surface roughness to be less than or equal to 12.5 mu m; and washing the polished surface to be compounded with clear water, removing impurities on the surface, cleaning the surface to be compounded of the base metal 1 and the super austenitic stainless steel compound layer 2 with absolute ethyl alcohol and acetone, and drying by cold air.
(2) Welding a front blank: after the surfaces to be compounded of the base metal 1 and the super austenitic stainless steel compound layer 2 are oppositely stacked, welding the two layers of metals together by adopting stainless steel shielded metal arc welding; and performing sealing welding on the periphery in the sequence of 'length direction → the other long side → width direction → the other wide side', wherein the welding seams are welded in three layers, the welding seam on the upper layer is cooled and then welded on the lower layer, and the lower layer of arc starting point avoids the arc starting position of the upper layer.
(3) Preparing a pack-rolled composite blank: the super austenitic stainless steel clad layers 2 of the two front blanks are oppositely stacked, a layer of isolating agent 3 is coated in the middle, the isolating agent 3 is a mixed solution of magnesium oxide and water glass (wt%), the mixed solution is 1: 4-2: 3, the coating thickness is 1.5mm, after the isolating agent is dried, the super austenitic stainless steel welding rods are adopted to fully weld the heads of the adjacent super austenitic stainless steel clad layers 2 of the composite blanks, and the two side edges are subjected to spot welding.
(4) Heating and rolling: putting the overlapped and rolled composite blank into a heating furnace, heating to 1250 ℃, preserving heat in the furnace for 2 hours, wherein the initial rolling temperature is 1150 ℃, and the first pass reduction rate is more than or equal to 20 percent; the cumulative reduction rate of the first three times is more than or equal to 42 percent, and the finishing temperature is 1050 ℃. The rolling speed was set at 2 m/s.
(5) And (3) subsequent treatment: and carrying out heat treatment and other treatments on the super austenitic stainless steel composite plate according to the requirements of users to obtain a finished product of the super austenitic stainless steel composite plate.
Claims (2)
1. A manufacturing method of a pack-rolled super austenitic stainless steel-steel composite plate is characterized in that: the method comprises the following steps: (1) preparing a blank: selecting a base metal-1 and a super austenitic stainless steel clad layer-2 with approximately same length and width, processing a ring chamfer groove on the surfaces to be clad of the base metal-1 and the super austenitic stainless steel clad layer-2, removing oxide layers on the surfaces to be clad of the base metal-1 and the super austenitic stainless steel clad layer-2 by using a milling, planing or grinding method, cleaning the surfaces to be clad of the base metal-1 and the super austenitic stainless steel clad layer-2 by absolute ethyl alcohol and acetone in sequence, and drying by using cool air with the temperature lower than 30 ℃; (2) welding a front blank: stacking the surfaces to be compounded of the cleaned and dried base metal-1 and the super austenitic stainless steel composite layer-2 relatively, and then performing circumferential sealing welding along the groove; (3) preparing a pack-rolled composite blank: the super austenitic stainless steel surfaces of the two front blanks are oppositely stacked, a separant-3 is coated between the two layers, after the separant is dried, a super austenitic stainless steel welding rod is adopted to fully weld the heads of the adjacent super austenitic stainless steel layers of the composite blanks, and the two side edges are spot-welded; (4) heating and rolling: putting the laminated composite blank into a heating furnace to carry out heating control according to the production heating system of the multilayer metal; and rolling the heated and laminated composite blank, wherein the initial rolling temperature, the final rolling temperature and the cooling process after rolling are all executed according to the production process of the multilayer metal, the rolling speed is 0.2-2.5 m/s, and the total rolling reduction rate is more than or equal to 60%.
2. The method of manufacturing a super austenitic stainless steel composite panel according to claim 1, wherein: the heating temperature in the heating and rolling process is 1000-1180 ℃, the temperature is kept in the furnace for 1-2.5 hours, the rolling temperature is 1020-1150 ℃, the first pass reduction rate is more than or equal to 22%, the first three pass accumulated reduction rate is more than or equal to 42%, and the final rolling temperature is 920-1060 ℃.
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| CN201911279904.1A CN113020258A (en) | 2019-12-09 | 2019-12-09 | Manufacturing method of laminated super austenitic stainless steel-steel composite plate |
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| CN201911279904.1A CN113020258A (en) | 2019-12-09 | 2019-12-09 | Manufacturing method of laminated super austenitic stainless steel-steel composite plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695393A (en) * | 2021-08-24 | 2021-11-26 | 太原理工大学 | Method for preparing metal composite thin strip by adopting pack rolling technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695393A (en) * | 2021-08-24 | 2021-11-26 | 太原理工大学 | Method for preparing metal composite thin strip by adopting pack rolling technology |
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