Composite plate, reactor and preparation method thereof

Abstract

The present invention provides a composite plate, a reactor, and a method for preparing the same, belonging to the technical field of composite metal materials. The composite plate of the present invention comprises a composite base steel plate made of carbon steel and high-manganese steel, and a cladding nickel alloy plate. The thickness ratio of the carbon steel plate, the high-manganese steel plate, and the thickness of the nickel alloy plate are controlled to meet different working environments and working conditions. Different ratios and thickness designs enable the composite plate to withstand high temperatures and achieve higher strength, high interfacial bonding, good wear resistance, and excellent corrosion resistance. Using this composite plate to prepare a reactor can extend the service life of the reactor.

Description

Technical Field

[0001] The present invention belongs to the technical field of composite metal materials, and in particular relates to a composite plate, a reactor and a preparation method thereof. Background Art

[0002] Composite metal materials are formed by metallurgically bonding multiple metals with different properties at their interfaces using composite technology. These materials significantly improve the thermal expansion, strength, fracture toughness, impact toughness, wear resistance, electrical properties, and magnetic properties of individual metals. These materials possess superior performance and are widely used in a variety of industries, including petroleum, chemical, shipbuilding, metallurgy, machinery manufacturing, and electric power.

[0003] Metal composite panels are typically made of multiple layers of metal materials. The base material is typically ordinary carbon steel such as Q235B, Q345B, and 20R, or specialized steel such as stainless steel. The cladding can be made of precious metals or alloys such as copper, aluminum, and titanium. Currently, metal composite panels on the market are typically assembled using either explosive or rolling processes.

[0004] Explosive cladding is a high-quality metallurgical technique that utilizes the enormous energy generated by explosive detonation to induce intense plastic deformation of dissimilar metals under high temperature, high pressure, and high impact, achieving the desired result. Its advantages, including diverse combinations, high bond strength, low cost, and high welding efficiency, have led to its increasing application in the chemical, pharmaceutical, aerospace, defense, and nuclear energy sectors.

[0005] For example, patent CN111014931A discloses a method for explosive composite of tantalum / zirconium / titanium / steel explosive composite plates, which includes selecting an area with hard and flat soil, laying yellow sand, and leveling it as a foundation; placing steel plates on the foundation, and evenly placing first supports on the upper surface of the steel plates; placing titanium plates on the first supports, and placing second supports on the upper surface of the titanium plates; placing zirconium plates on the second supports, and placing third supports on the upper surface of the zirconium plates; placing tantalum plates on the third supports, and applying a protective layer on the upper surface of the tantalum plates; laying an explosive layer on the protective layer, and laying 1# rock emulsion explosives on the center of the tantalum plates except for 2# rock emulsion explosives; placing a detonator in the center of the 2# rock emulsion explosives for explosive composite.

[0006] For another example, patent CN102794607A discloses a method for manufacturing large-size tantalum / zirconium / titanium / steel composite plates, including: 1. welding titanium plates, zirconium plates, and tantalum plates; 2. surface polishing of the zirconium plates, titanium plates, and tantalum plates, and fine polishing of the steel plates; 3. explosive compounding to obtain a zirconium / titanium / steel composite plate; 4. ultrasonic flaw detection and annealing; 5. leveling and fine polishing; 6. explosive compounding to obtain a tantalum / zirconium / titanium / steel composite plate; 7. ultrasonic flaw detection and annealing; 8. leveling, cutting, ultrasonic flaw detection, and surface treatment to obtain a large-size tantalum / zirconium / titanium / steel composite plate.

[0007] However, current composite panels are made of multiple materials, resulting in significant performance differences between adjacent layers. This can lead to layers easily splitting after repeated temperature fluctuations, resulting in poor interfacial bonding, which impacts structural stability. Furthermore, they suffer from poor wear resistance and a short service life. Therefore, it is necessary to develop a composite panel and its manufacturing process that exhibits superior interfacial bonding, wear resistance, and other properties, resulting in a long service life. Summary of the Invention

[0008] The object of the present invention is to provide a composite plate, a reactor and a preparation process thereof, wherein the composite plate has high interface bonding strength, high bonding rate, excellent mechanical properties, excellent corrosion resistance, good wear resistance and long service life.

[0009] In order to solve the above problems, the present invention adopts the following solutions:

[0010] In one aspect, a composite plate comprises a composite base steel plate and a cladding nickel alloy plate; wherein,

[0011] The composite base steel plate comprises a carbon steel plate and a high manganese steel plate, and the thickness ratio of the carbon steel plate to the high manganese steel plate is 2-5:1.

[0012] Furthermore, the thickness of the composite base steel plate is 15-90 mm; the thickness of the cladding nickel alloy plate is 3-10 mm.

[0013] Preferably, when the thickness ratio of the carbon steel plate to the high manganese steel plate is 2-4:1, the thickness of the composite base steel plate is 15-60 mm, and the thickness of the cladding nickel alloy plate is 3-7 mm; when the thickness ratio of the carbon steel plate to the high manganese steel plate is 4-5:1, the thickness of the composite base steel plate is 68-90 mm, and the thickness of the cladding nickel alloy plate is 8-10 mm.

[0014] Furthermore, the model of the carbon steel is selected from any one of Q235B, Q245R, Q345D, Q345E, Q345R and Q345R (R-HIC); the model of the high manganese steel plate is selected from any one of X120Mn12 or ZGMn13-4; the model of the nickel alloy plate is selected from any one of NS1101, NS1102, NS1402, NS3102, NS3304, NS3305, NS3308, NS3311, NS3309 and NS3203.

[0015] More preferably, the carbon steel is selected from any one of Q245R, Q345D, Q345E, Q345R and Q345R (R-HIC); the stainless steel plate

[0016] The method for preparing the composite plate comprises the following steps:

[0017] (1) heat-treating the high manganese steel plate, and then pickling and grinding the carbon steel plate and the heat-treated high manganese steel plate;

[0018] (2) Composite base steel plates are prepared by composite carbon steel plates and high manganese steel plates by explosive composite or rolling composite methods;

[0019] (3) annealing and leveling the composite base steel plate obtained in step (2);

[0020] (4) The composite base steel plate and the nickel alloy plate after the leveling treatment in step (3) are heat treated, pickled, and polished respectively;

[0021] (5) Using explosive lamination to laminate the carbon steel plate surface of the composite base steel plate with the nickel alloy plate;

[0022] (6) After the composite is completed, two annealing treatments are performed, and then leveling, trimming, and polishing of the nickel alloy plate surface are performed to obtain the composite plate.

[0023] Furthermore, in step (1), the heat treatment time is 30-60 min, and the heat treatment temperature is 310-330.

[0024] Preferably, in step (1), the heat treatment time is 40 minutes and the heat treatment temperature is 320.

[0025] Furthermore, in steps (1) and (4), the acid used in the pickling is dilute hydrochloric acid and / or dilute nitric acid.

[0026] Furthermore, in step (1), the surface roughness of the carbon steel plate and the high manganese steel plate after surface grinding is 0.5-8 μm.

[0027] Furthermore, in step (2), the heating temperature during the rolling process is 1150-1300°C, and the number of rolling times is 3-6 times.

[0028] Furthermore, in steps (2) and (5), the explosive in the explosive compounding process is ammonium nitrate powdered explosive, the explosive detonation velocity is 2200-3000 m / s, the thickness of the explosive is 18-40 mm, and the charge density is 0.7-1.2 g / cm 3 During the explosive composite process, a protective layer is coated on the surface of the high manganese steel plate. The protective layer material is any one of asphalt, motor oil, vaseline, and butter. The thickness of the protective layer is 0.1-0.15mm.

[0029] Preferably, in step (2), the explosive compound has a detonation velocity of 2700-3000 m / s, a thickness of 28-36 mm, and a charge density of 1.0-1.2 g / cm 3 In step (5), the explosive compound has a detonation velocity of 2200-2800 m / s, a thickness of 18-30 mm, and a charge density of 0.6-1.0 g / cm 3 .

[0030] Furthermore, in step (3), the annealing treatment step is: heating to 560-600°C at a heating rate of 85-100 / h, keeping the temperature for 2-4h, and then cooling to below 260°C with the furnace and air cooling.

[0031] Preferably, in step (3), the annealing step is: heating to 580°C at a heating rate of 90°C / h, keeping the temperature for 3 hours, and then cooling to below 260°C with the furnace and air cooling.

[0032] Furthermore, in step (4), the heat treatment time of the composite base steel plate is 30-50 minutes, and the heat treatment temperature is 300-330°C; the heat treatment time of the nickel alloy plate is 40-60 minutes, and the heat treatment temperature is 260-280°C.

[0033] Preferably, in step (4), the heat treatment time of the composite base steel plate is 40 minutes, and the heat treatment temperature is 320°C; the heat treatment time of the nickel alloy plate is 50 minutes, and the heat treatment temperature is 270°C.

[0034] Furthermore, in step (6), the two annealing steps are:

[0035] Primary annealing: heat to 640-660℃, heating rate 80-100 / h, keep warm for 1-1.5h, cool to below 400℃, then take out of the furnace and air cool to room temperature;

[0036] Secondary annealing: heat to 500-520℃, heating rate 40-50℃ / h, keep warm for 2-3h, then cool to room temperature.

[0037] Preferably, in step (6), the two annealing steps are:

[0038] Primary annealing: heating to 650℃, heating rate 90℃ / h, keeping warm for 1.5h; cooling to below 400℃, then taking out of the furnace and air cooling to room temperature;

[0039] Secondary annealing: heat to 510°C at a rate of 40°C / h, hold for 2.5 hours, and cool to room temperature.

[0040] On the other hand, the present invention also provides the use of the above-mentioned composite plate in preparing a reactor.

[0041] On the other hand, a reactor is made of the composite plate described above; the high manganese steel plate surface of the composite plate is located on the outside of the reactor, and the nickel alloy plate surface is located on the inside of the reactor.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] (1) The present invention provides a composite plate comprising a carbon steel plate, a high manganese steel plate and a nickel alloy plate. The composite plate has a bonding rate of more than 99.8%, high shear strength, excellent corrosion resistance, good wear resistance and long service life.

[0044] (2) The present invention controls the thickness ratio of the carbon steel plate, the high manganese steel plate, and the thickness of the nickel alloy plate to meet different working environments and working conditions. Different ratios and thickness designs enable the composite plate to withstand high temperatures and obtain higher strength, thereby increasing the service life of the reactor and solving the problem of short service life in the prior art.

[0045] (3) The carbon steel plates, high manganese steel plates and nickel alloy plates of the present invention are first heat-treated before explosive composite. Controlling the heat treatment conditions helps to reduce deformation and cracking in subsequent processing processes, improve the bonding between subsequent plate layers, and improve the bonding strength and bonding rate. In particular, the composite base steel plates and nickel alloy plates are heat-treated before explosive composite, which can reduce the decrease in bonding strength between the plate layers caused by the composite base steel plates being subjected to the explosion impact again, improve the bonding rate and bonding quality of the composite interface, and improve the mechanical properties of the composite plate.

[0046] (4) The present invention performs two annealing treatments after explosively cladding the composite base steel plate and the cladding nickel alloy plate, which can fully remove the internal stress caused by the explosive cladding and control the conditions of the two annealing treatments, which helps to further improve the bonding rate and wear resistance of the composite interface. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a schematic diagram of the cross-sectional structure of a composite plate provided in Example 1, wherein 1 represents a high manganese steel plate, 2 represents a carbon steel plate, and 3 represents a nickel alloy plate.

[0048] Figure 2 This is a structural diagram of a reactor provided in an application example, where 4 represents the wall of the reactor. DETAILED DESCRIPTION

[0049] The following non-limiting examples are provided to enable those skilled in the art to more fully understand the present invention, but are not intended to limit the present invention in any way. The following is merely an illustrative description of the scope of the present invention, and those skilled in the art may make various changes and modifications to the present invention based on the disclosed content, which should also fall within the scope of the present invention.

[0050] The present invention is further described below by way of specific examples. Unless otherwise specified, the various chemical reagents used in the examples of the present invention were obtained through conventional commercial channels.

[0051] Example 1

[0052] The composite board, the preparation method thereof comprises the following steps:

[0053] (1) Select Q345E carbon steel plate with a thickness of 40 mm and X120Mn12 high manganese steel plate with a thickness of 20 mm; heat treat the high manganese steel plate at 310°C for 60 min, then pickle and polish with dilute hydrochloric acid.

[0054] (2) The carbon steel plate and the high manganese steel plate were installed using the parallel installation method. Then, a layer of asphalt with a thickness of 0.15 mm was coated on the surface of the high manganese steel plate. Then, explosives were placed on the surface. The detonation velocity of the explosives was 3000 m / s, the thickness of the explosives was 28 mm, and the charge density was 0.6 g / cm 3 , explosive composite is performed to obtain a composite base steel plate.

[0055] (3) The composite base steel plate is annealed by heating the temperature to 560°C at a rate of 85°C / h, keeping the temperature for 4 hours, then cooling the plate to below 260°C with the furnace, taking the plate out of the furnace and air-cooling it to room temperature, and then leveling the plate.

[0056] (4) Select NS3102 nickel alloy plate with a thickness of 4 mm; heat treat the composite base steel plate at 300°C for 50 minutes, and the nickel alloy plate at 260°C for 60 minutes, then pickle and polish the composite base steel plate and nickel alloy plate with dilute hydrochloric acid.

[0057] (5) The carbon steel plate surface and the nickel alloy plate of the composite base steel plate were installed using the parallel installation method. Then, a layer of asphalt with a thickness of 0.15 mm was coated on the surface of the nickel alloy plate. Explosives were placed on the surface with a detonation velocity of 2800 m / s, a thickness of 18 mm, and a charge density of 1.0 g / cm 3 , explosive composite is performed to obtain nickel alloy / composite plate;

[0058] (6) The nickel alloy / composite plate is subjected to two annealing treatments: the first annealing is performed as follows: the temperature is raised to 640°C at a heating rate of 80°C / h, the temperature is kept at this temperature for 1.5 hours, the plate is cooled to below 400°C with the furnace, and then the plate is taken out of the furnace and air-cooled to room temperature; the second annealing is performed as follows: the temperature is raised to 500°C at a heating rate of 40°C / h, the temperature is kept at this temperature for 3 hours, the plate is air-cooled to room temperature with the furnace, and then the plate is leveled, trimmed, and the surface of the nickel alloy plate is polished to obtain the composite plate.

[0059] The cross-sectional structure diagram of the prepared composite board is as follows: Figure 1 It should be noted that Figure 1 It is just a schematic diagram of the cross-section structure. Figure 1 The dimensions and proportions in various directions are not intended to limit the actual dimensions and proportions of the composite board prepared in Example 1.

[0060] Example 2

[0061] The composite board, the preparation method thereof comprises the following steps:

[0062] (1) Select Q245R carbon steel plate with a thickness of 60 mm and X120Mn12 high manganese steel plate with a thickness of 15 mm; heat treat the high manganese steel plate at 320°C for 40 min, then pickle and polish with dilute nitric acid.

[0063] (2) The carbon steel plate and the high manganese steel plate were installed using the parallel installation method. Then, a layer of asphalt with a thickness of 0.15 mm was coated on the surface of the high manganese steel plate. Then, explosives were placed on the surface. The detonation velocity of the explosives was 2860 m / s, the thickness of the explosives was 34 mm, and the charge density was 1.2 g / cm 3 , explosive composite is performed to obtain a composite base steel plate.

[0064] (3) The composite base steel plate is annealed by heating the temperature to 580°C at a rate of 90°C / h, keeping the temperature for 3 hours, then cooling the plate to below 260°C with the furnace, air-cooling the plate to room temperature, and leveling the plate.

[0065] (4) Select NS3304 nickel alloy plate with a thickness of 8 mm; heat treat the composite base steel plate at 320°C for 40 minutes, and the nickel alloy plate at 270°C for 50 minutes, then pickle the composite base steel plate and the nickel alloy plate with dilute nitric acid and polish.

[0066] (5) The carbon steel plate surface and the nickel alloy plate of the composite base steel plate were installed using the parallel installation method. Then, a layer of asphalt with a thickness of 0.15 mm was coated on the surface of the nickel alloy plate. Explosives were placed on the surface with a detonation velocity of 2600 m / s, a thickness of 22 mm, and a charge density of 0.8 g / cm 3 , explosive composite is performed to obtain nickel alloy / composite plate;

[0067] (6) The nickel alloy / composite plate is subjected to two annealing treatments: the first annealing is performed as follows: the temperature is raised to 650°C at a heating rate of 90°C / h, the temperature is kept at this temperature for 1.5 hours, the plate is cooled to below 400°C with the furnace, and then the plate is taken out of the furnace and air-cooled to room temperature; the second annealing is performed as follows: the temperature is raised to 510°C at a heating rate of 40°C / h, the temperature is kept at this temperature for 2.5 hours, the plate is air-cooled to room temperature with the furnace, and then the plate is leveled, trimmed, and the surface of the nickel alloy plate is polished to obtain the composite plate.

[0068] Example 3

[0069] The composite board, the preparation method thereof comprises the following steps:

[0070] (1) Select Q345R carbon steel plate with a thickness of 75 mm and ZGMn13-4 high manganese steel plate with a thickness of 15 mm; heat treat the high manganese steel plate at 330°C for 30 min, then pickle and polish with dilute hydrochloric acid.

[0071] (2) The carbon steel plate and the high manganese steel plate were installed using the parallel installation method. Then, a layer of asphalt with a thickness of 0.15 mm was coated on the surface of the high manganese steel plate. Then, explosives were placed on the surface. The detonation velocity of the explosives was 2700 m / s, the thickness of the explosives was 36 mm, and the charge density was 1.0 g / cm 3 , explosive composite is performed to obtain a composite base steel plate.

[0072] (3) The composite base steel plate is annealed by heating the temperature to 600°C at a rate of 100 / h, keeping the temperature for 2h, then cooling it to below 260°C with the furnace, taking it out of the furnace and air-cooling it to room temperature, and then leveling it.

[0073] (4) Select NS1402 nickel alloy plate with a thickness of 10 mm; heat treat the composite base steel plate at 330°C for 30 min, and the nickel alloy plate at 280°C for 40 min, then pickle and polish the composite base steel plate and nickel alloy plate with dilute hydrochloric acid.

[0074] (5) The carbon steel plate surface and the nickel alloy plate of the composite base steel plate were installed using the parallel installation method. Then, a layer of asphalt with a thickness of 0.15 mm was coated on the surface of the nickel alloy plate. Explosives were placed on the surface with a detonation velocity of 2200 m / s, a thickness of 30 mm, and a charge density of 1.0 g / cm 3 , explosive composite is performed to obtain nickel alloy / composite plate;

[0075] (6) The nickel alloy / composite plate is subjected to two annealing treatments: the first annealing is performed as follows: the temperature is raised to 660°C, the heating rate is 100 / h, the temperature is kept at this temperature for 1 hour, the temperature is cooled to below 400°C with the furnace, and the plate is taken out of the furnace and air-cooled to room temperature; the second annealing is performed as follows: the temperature is raised to 520°C, the heating rate is 50 / h, the temperature is kept at this temperature for 2 hours, the temperature is cooled to room temperature with the furnace, and the plate is leveled, trimmed, and the surface of the nickel alloy plate is polished to obtain the composite plate.

[0076] Example 4

[0077] The composite board, the preparation method thereof comprises the following steps:

[0078] (1) Select Q245R carbon steel plate with a thickness of 60 mm and X120Mn12 high manganese steel plate with a thickness of 15 mm; heat treat the high manganese steel plate at 320°C for 40 min, then pickle and polish with dilute nitric acid.

[0079] (2) The carbon steel plate and the high manganese steel plate are compounded by rolling composite method to obtain a composite base steel plate, the rolling hot temperature is 1270, and the rolling number is 5 times.

[0080] (3) The composite base steel plate is annealed by heating the temperature to 580°C at a rate of 90°C / h, keeping the temperature for 3 hours, then cooling the plate to below 260°C with the furnace, air-cooling the plate to room temperature, and leveling the plate.

[0081] (4) Select NS3304 nickel alloy plate with a thickness of 8 mm; heat treat the composite base steel plate at 320°C for 40 minutes, and the nickel alloy plate at 270°C for 50 minutes, then pickle the composite base steel plate and the nickel alloy plate with dilute nitric acid and polish.

[0082] (5) The carbon steel plate surface and the nickel alloy plate of the composite base steel plate were installed using the parallel installation method. Then, a layer of asphalt with a thickness of 0.15 mm was coated on the surface of the nickel alloy plate. Explosives were placed on the surface with a detonation velocity of 2600 m / s, a thickness of 22 mm, and a charge density of 0.8 g / cm 3 , explosive composite is performed to obtain nickel alloy / composite plate;

[0083] (6) The nickel alloy / composite plate is subjected to two annealing treatments: the first annealing is performed as follows: the temperature is raised to 650°C at a heating rate of 90°C / h, the temperature is kept at this temperature for 1.5 hours, the plate is cooled to below 400°C with the furnace, and then the plate is taken out of the furnace and air-cooled to room temperature; the second annealing is performed as follows: the temperature is raised to 510°C at a heating rate of 40°C / h, the temperature is kept at this temperature for 2.5 hours, the plate is air-cooled to room temperature with the furnace, and then the plate is leveled, trimmed, and the surface of the nickel alloy plate is polished to obtain the composite plate.

[0084] Comparative Example 1

[0085] The difference between this comparative example and Example 2 is that the thickness of each metal plate is different, specifically, the carbon steel plate has a thickness of 65 mm, the high manganese steel plate has a thickness of 10 mm, and the nickel alloy plate has a thickness of 6 mm.

[0086] Comparative Example 2

[0087] The difference between this comparative example and Example 2 is that the thickness of each metal plate is different, specifically, the carbon steel plate has a thickness of 35 mm, the high manganese steel plate has a thickness of 30 mm, and the nickel alloy plate has a thickness of 6 mm.

[0088] Comparative Example 3

[0089] The difference between this comparative example and Example 2 is that S321 stainless steel plate is selected instead of high manganese steel plate, and the thickness remains unchanged.

[0090] Comparative Example 4

[0091] The difference between this comparative example and Example 2 is that in step (1), neither the composite base steel plate nor the nickel alloy plate is subjected to heat treatment.

[0092] Comparative Example 5

[0093] The difference between this comparative example and Example 2 is that in step (4), neither the composite base steel plate nor the nickel alloy plate is subjected to heat treatment.

[0094] Comparative Example 6

[0095] The difference between this comparative example and Example 2 is that no heat treatment is performed in steps (1) and (4).

[0096] Comparative Example 7

[0097] The difference between this comparative example and Example 2 is that the annealing conditions in step (6) are:

[0098] Primary annealing: heating to 630°C at a heating rate of 90°C / h and holding for 1.5 hours; then cooling at a cooling rate of 40°C / h until the temperature drops below 260°C and then air-cooling is performed.

[0099] Secondary annealing: heat to 460℃, heating rate 50℃ / h, keep warm for 2h, and air cool in the furnace.

[0100] Comparative Example 8

[0101] The difference between this comparative example and Example 2 is that the annealing conditions in step (6) are:

[0102] Primary annealing: heating to 670°C at a heating rate of 110°C / h and holding for 1.5 hours; then cooling at a cooling rate of 60°C / h until the temperature drops below 260°C and then air-cooling is performed.

[0103] Secondary annealing: heat to 520℃, heating rate 50℃ / h, keep warm for 2h, and air cool in the furnace.

[0104] Comparative Example 9

[0105] The difference between this comparative example and Example 2 is that in step (6), only one annealing is performed. The annealing conditions are: heating to 650°C, heating rate 90 / h, keeping warm for 1.5h; then cooling at a cooling rate of 50 / h, cooling to below 260°C and then taking out of the furnace for air cooling.

[0106] Comparative Example 10

[0107] The difference between this comparative example and Example 2 is that in step (6), only one annealing is performed. The annealing conditions are: heating to 510°C, heating rate 70 / h, keeping warm for 1.5h, and air cooling to room temperature.

[0108] Experimental example

[0109] The composite plates obtained in Examples 1-4 and Comparative Examples 1-9 were subjected to the following tests: the mechanical strength of the composite plates was tested according to standard GB / T6396-2008, the wear loss was tested according to standard GB / T12444-2006, and the interface bonding rate was tested using ultrasonic testing. The results are shown in Table 1 below.

[0110] Table 1

[0111]

[0112]

[0113] The results show that the interface bonding rate of the composite plate obtained by the present invention is above 99.8% and can reach 100%, with high negative bonding and excellent mechanical properties. The tensile strength and yield strength of Comparative Example 1-2 are slightly lower than those of Example 2. It can be seen that controlling the thickness and ratio between the plates of the composite plate can make the composite plate obtain higher strength. The interface bonding rate and mechanical properties of the composite plate obtained by Comparative Example 3 are slightly lower than those of Example 2, indicating that the stainless steel plate and the composite plate made using the high manganese steel plate have better interface compositeness and mechanical properties. In Comparative Examples 4-5, no heat treatment was performed, and the interface bonding rate and mechanical properties of the obtained composite plate were significantly lower than those of Example 2. It can be seen that whether heat treatment is performed before compounding the carbon steel plate with the high manganese steel plate, or before compounding with the nickel alloy plate, it will affect the interface bonding performance and mechanical properties of the composite plate. In Comparative Examples 6-9, the annealing conditions after explosive cladding of the base steel plate and the nickel alloy plate are different. The interface bonding performance and mechanical properties of the resulting composite plate are significantly different from those in Example 2, and the wear resistance is reduced. It can be seen that the two annealing treatments help to improve the overall performance of the composite plate. Controlling the conditions of the two annealing treatments can further improve the wear resistance and mechanical strength.

[0114] Application Examples

[0115] A reactor having a structure as follows Figure 2 As shown. Among them, the wall of the reactor ( Figure 2 4) is made of the composite plate prepared in Example 1; the high manganese steel plate surface of the composite plate is located outside the reactor, and the nickel alloy plate surface is located inside the reactor.

[0116] The above description of the embodiments is intended to facilitate understanding and application of the invention by those skilled in the art. It will be apparent that those skilled in the art can readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention, without departing from the scope of the present invention, should be within the scope of protection of the present invention.

Claims

1. A composite board, characterized in that: It comprises a composite base steel plate and a cladding nickel alloy plate; wherein, The composite base steel plate comprises a carbon steel plate and a high manganese steel plate, and the thickness ratio of the carbon steel plate to the high manganese steel plate is 2-5:1; The thickness of the composite base steel plate is 15-90 mm; the thickness of the cladding nickel alloy plate is 3-10 mm; The carbon steel is selected from any one of Q235B, Q245R, Q345D, Q345E, Q345R and Q345R (R-HIC); the high manganese steel plate is selected from any one of X120Mn12 and ZGMn13-4; the nickel alloy plate is selected from any one of NS1101, NS1102, NS1402, NS3102, NS3304, NS3305, NS3308, NS3311, NS3309 and NS3203; The preparation method of the composite plate comprises the following steps: (1) heat-treating the high manganese steel plate, and then pickling and grinding the carbon steel plate and the heat-treated high manganese steel plate; (2) Composite base steel plates are prepared by composite carbon steel plates and high manganese steel plates by explosive composite or rolling composite methods; (3) annealing and leveling the composite base steel plate obtained in step (2); (4) The composite base steel plate and the nickel alloy plate after the leveling treatment in step (3) are heat treated, pickled, and polished respectively; (5) Using explosive lamination to laminate the carbon steel plate surface of the composite base steel plate with the nickel alloy plate; (6) After the composite is completed, annealing treatment is performed twice, and then leveling, trimming, and polishing of the nickel alloy plate surface are performed to obtain the composite plate; In step (1), the heat treatment time is 30-60 min, and the heat treatment temperature is 310-330°C; In step (3), the annealing step is: heating to 560-600°C at a heating rate of 85-100°C / h, keeping warm for 2-4h, then cooling to below 260°C with the furnace, taking out of the furnace and air-cooling to room temperature; in step (4), the heat treatment time of the composite base steel plate is 30-50min, and the heat treatment temperature is 300-330°C; the heat treatment time of the nickel alloy plate is 40-60min, and the heat treatment temperature is 260-280°C; In step (6), the two annealing steps are: Primary annealing: heating to 640-660℃, heating rate 80-100℃ / h, keeping warm for 1-1.5h, cooling with the furnace to below 400℃, then taking out of the furnace and air cooling to room temperature; Secondary annealing: heat to 500-520℃, heating rate 40-50℃ / h, keep warm for 2-3h, and then cool to room temperature in the furnace.

2. The composite panel according to claim 1, wherein: In steps (2) and (5), the explosive compound has a detonation velocity of 2200-3000 m / s, a thickness of 18-40 mm, and a charge density of 0.7-1.2 g / cm 3 .

3. Use of the composite plate according to any one of claims 1 to 2 in preparing a reactor.

4. A reactor, characterized in that Made of the composite plate according to any one of claims 1-2; the high manganese steel plate surface of the composite plate is located on the outside of the reactor, and the nickel alloy plate surface is located on the inside of the reactor.

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