A copper-steel composite water jacket

Abstract

The present invention discloses a copper-steel composite water jacket, which relates to the technical field of copper-steel water jackets and includes a copper base, a steel bar 1, a steel bar 2, a steel segment, a steel pipe and a steel plate. A rectangular water storage tank is provided on the upper side of the copper base, a rectangular boss 1 is provided in a rectangular array in the entire water storage tank of the copper base, and a circular boss 2 is provided in a linear array in the middle of the water storage tank of the copper base; a pair of steel bars 1 are provided and symmetrically embedded in the front and back sides of the copper base; a pair of steel bars 2 are provided and symmetrically embedded in the left and right sides of the copper base; a plurality of steel segments are provided and correspondingly embedded in each boss 1; a plurality of steel pipes are provided and correspondingly embedded in each boss 2; a steel plate is horizontally provided above the water storage tank, and the steel plate is sealed and welded to the steel bar 1, the steel bar 2, the steel segment and the steel pipe respectively. The copper-steel composite water jacket of the present invention has both the corrosion resistance, wear resistance and high thermal conductivity of copper and the good comprehensive mechanical properties of carbon steel.

Description

Technical Field

[0001] The invention relates to the technical field of copper-steel water jackets, and in particular to a copper-steel composite water jacket. Background Art

[0002] Copper water jacket is a cooling water jacket made of copper. It is used as cooling equipment on metallurgical furnaces and high-temperature furnaces. It includes a wall, water inlet pipes and water outlet pipes. Cooling copper pipes are installed in the wall. The cooling copper pipes are an integrated structure with the water inlet pipes and water outlet pipes. The cooling copper pipes use water as the heat exchange medium and utilize the thermal conductivity of the circulating water of copper to transfer the temperature of the metallurgical furnace body. It is an important cooling device on metallurgical furnaces and is widely used in the metallurgical industry.

[0003] Defects and shortcomings of existing copper water jackets: Red copper has good thermal conductivity, but poor high-temperature strength, and poor welding performance. Due to the continuous improvement of production capacity and the increase in oxygen enrichment concentration, the existing copper water jacket has excessive heat load and local overheating. It is urgent to further improve the high-temperature strength of the copper water jacket, better remove the heat in the furnace, and achieve more efficient heat conduction. Summary of the Invention

[0004] The object of the present invention is to provide a copper-steel composite water jacket to solve the above-mentioned defects caused by the prior art.

[0005] A copper-steel composite water jacket comprises a copper base, a first steel bar, a second steel bar, steel segments, a steel pipe and a steel plate, wherein:

[0006] A rectangular water storage tank is provided on the upper side of the copper base, and a rectangular boss 1 is provided in a rectangular array in the entire water storage tank. A circular boss 2 is provided in a linear array in the middle of the water storage tank, and a circular through-hole is coaxially provided at the center of the boss 2.

[0007] The steel bars are provided with a pair and are symmetrically embedded in the front and rear sides of the copper base. The middle and lower parts of the steel bars are staggered with two rows of circular coupling holes.

[0008] The second steel bar is provided with a pair and is symmetrically embedded on the left and right sides of the copper base. The middle and lower parts of the second steel bar are staggered with two rows of circular coupling holes.

[0009] The steel segments are provided with a plurality of steel segments and are correspondingly embedded in each boss 1. The middle and lower parts of the steel segments are staggered with two rows of circular coupling holes 3;

[0010] The steel tubes are provided in a plurality and correspondingly embedded in each boss 2. The lower end of the steel tube is beveled, and two rows of circular coupling holes 4 are staggeredly distributed in the middle and lower part of the steel tube.

[0011] The steel plate is horizontally arranged above the water storage tank and its lower surface is in contact with the upper surfaces of the copper base, boss one and boss two. The steel plate is gap-fitted with the rectangular frame surrounded by two steel bars one and two steel bars two. The steel plate is seal-welded with steel bar one and steel bar two respectively. The steel plate is provided with a rectangular fitting opening one above each steel section, and the steel section is gap-fitted with the fitting opening one. The steel plate is provided with a circular fitting opening two above each steel pipe, and the steel pipe is gap-fitted with the fitting pipe two. The steel plate is seal-welded with the steel section and the steel pipe respectively.

[0012] Preferably, a water inlet pipe and a water outlet pipe are welded to the left and right sides of the steel plate respectively.

[0013] Preferably, the steel bar 1 is symmetrically welded with an upwardly inclined steel column 1 on the left and right sides, the steel bar 2 is welded with an upwardly inclined steel column 2 in the center of the outer side, an inclined steel column 3 is welded between the adjacent ends of the steel bar 1 and the steel bar 2, the steel section is symmetrically welded with an upwardly inclined steel column 4 on the left and right sides, a pair of "︹" steel columns 5 are connected across the front and rear steel bars 1, and a pair of steel columns 6 are welded between the steel column 5 and each steel pipe.

[0014] Preferably, the forming process of the copper-steel composite water jacket comprises the following steps:

[0015] Step 1: Prepare steel parts: Use 235Q steel plates to make steel bar 1, steel bar 2, steel segments and steel plates, and use 235Q seamless steel pipes to make steel pipes;

[0016] Step 2: Welding embedded parts: symmetrically weld the inclined upward steel column 1 on the left and right sides of the steel bar 1, weld the inclined upward steel column 2 in the center of the outer side of the steel bar 2, weld the inclined steel column 3 between the adjacent ends of the steel bar 1 and the steel bar 2, weld the inclined upward steel column 4 symmetrically on the left and right sides of the steel section, weld a pair of "︹" steel columns 5 across between the front and rear steel bars 1, and weld a pair of steel columns 6 between the steel column 5 and each steel pipe;

[0017] Step 3: Modeling: Place the wooden mold on the modeling plate, place the sand box on it, and make the cavity;

[0018] Step 4: Preheating: Place the sand box in the drying room and burn it at 360℃ for 6 to 7 hours until the sand box is dry and free of moisture.

[0019] Step 5: Place the embedded parts: Place and fix the prepared embedded parts in the preheated cavity, cover the cover box, and fix it firmly;

[0020] Step 6: Melting: Place the copper plate in an electric furnace and melt it to a temperature of 1140-1160°C. The copper liquid is then taken out of the furnace and poured into a preheated ladle.

[0021] Step 7: Pouring: Control the pouring speed at 1.0m / s, pour the copper liquid into the cavity, and wait for solidification;

[0022] Step 8: Unpacking: Unpack the box 10 to 15 minutes after pouring and take out the casting blank;

[0023] Step 9: Sawing the riser: Saw off the riser of the blank;

[0024] Step 10: Machining: Machining the blank as required to obtain a copper matrix;

[0025] Step 11: Spraying: Evenly spray metal powder containing copper or copper alloy on the inner wall of the copper substrate to obtain an anti-permeation layer;

[0026] Step 12: Check the bonding: Place the copper substrate horizontally and fill the water tank of the copper substrate with water. Then observe whether the copper substrate leaks.

[0027] Step 13: Welding embedded parts: First, seal-weld the steel plate to the first steel bar and the second steel bar, and then seal-weld the steel plate to the steel section and the steel pipe to obtain a copper-steel composite water jacket.

[0028] Step 14: Test water pressure resistance: Fill the copper-steel composite water jacket with 0.45 MPa water flow and check whether the outer surface of the copper-steel composite water jacket is leaking.

[0029] Compared with the prior art, the copper-steel composite water jacket in the present invention has the following advantages:

[0030] 1. The copper-steel composite water jacket is a new, energy-efficient, bimetallic composite material, made of copper as the base material and integrally cast with high-quality steel. Through a special processing technique and high-temperature integral casting, the two materials are bonded together at high temperatures, making them inseparable. This new type of water jacket combines the corrosion resistance, wear resistance, and high thermal conductivity of copper with the excellent weldability, formability, and ductility of carbon steel and the excellent overall mechanical properties of steel.

[0031] 2. The revised processing flow simplifies and improves component production efficiency. It can be widely used in industries such as metallurgy, machinery, and nuclear power. This is a brand-new process with significant advantages: ① After copper and steel are clad, their respective performance advantages complement each other, expanding their application range. ② The clad quality is high, and the interface with other components utilizes the weldability of steel to achieve a complete metallurgical bond, greatly enhancing the usability of the water jacket. ③ It expands the application range of copper and meets the needs of social development. ④ It meets the needs of national industrial restructuring. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0033] Figure 2 It is a structural schematic diagram of the local explosion of the present invention.

[0034] Figure 3 Schematic diagram of the structure of the copper substrate in the present invention.

[0035] Figure 4 and Figure 5 It is a structural schematic diagram of the embedded parts in the present invention.

[0036] in:

[0037] 11-copper base; 11a-water storage tank; 11b-through opening; 111-boss one; 112-boss two; 12-steel bar one; 12a-combination hole one; 13-steel bar two; 13a-combination hole two; 14-steel section; 14a-combination hole three; 15-steel pipe; 15a-combination hole four; 16-steel plate; 16a-matching port one; 16b-matching port two; 161-water inlet pipe; 162-water outlet pipe; 17-steel column one; 18-steel column two; 19-steel column three; 20-steel column four; 21-steel column five; 22-steel column six DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0039] like Figures 1 to 5 As shown, a copper-steel composite water jacket includes a copper base 11, a steel bar 12, a steel bar 2 13, a steel segment 14, a steel pipe 15 and a steel plate 16, wherein:

[0040] A rectangular water storage groove 11a is provided on the upper side of the copper base 11. A rectangular array of rectangular bosses 111 is provided in the entire water storage groove 11a. A circular boss 2 112 is provided in a linear array in the middle of the water storage groove 11a. A circular through-opening 11b is coaxially provided at the center of the boss 2 112.

[0041] The steel bars 12 are provided in a pair and are symmetrically embedded in the front and rear sides of the copper base 11. The middle and lower parts of the steel bars 12 are staggered with two rows of circular coupling holes 12a.

[0042] The steel bars 13 are provided in a pair and are symmetrically embedded on the left and right sides of the copper base 11. The middle and lower parts of the steel bars 13 are staggered with two rows of circular coupling holes 13a.

[0043] The steel segments 14 are provided in a plurality and are correspondingly embedded in each boss 111. The middle and lower parts of the steel segments 14 are staggered with two rows of circular coupling holes 14a.

[0044] The steel tubes 15 are provided in a plurality and are correspondingly embedded in each boss 112. The lower end of the steel tube 15 is beveled, and two rows of circular coupling holes 15a are staggered in the middle and lower part of the steel tube 15.

[0045] The steel plate 16 is horizontally arranged above the water storage tank 11a and its lower surface is in contact with the upper surface of the copper base 11, boss 111 and boss 2 112. The steel plate 16 is gap-fitted with the rectangular frame surrounded by two steel bars 12 and two steel bars 13. The steel plate 16 is seal-welded with steel bars 12 and steel bars 13 respectively. The steel plate 16 is provided with a rectangular fitting opening 16a above each steel section 14. The steel section 14 is gap-fitted with the fitting opening 16a. The steel plate 16 is provided with a circular fitting opening 2 16b above each steel pipe 15. The steel pipe 15 is gap-fitted with the fitting opening 2 16b. The steel plate 16 is seal-welded with the steel section 14 and the steel pipe 15 respectively.

[0046] In this embodiment, a water inlet pipe 161 and a water outlet pipe 162 are welded to the left and right sides of the steel plate 16. External cold water is introduced into the chamber of the copper-steel composite water jacket through the water inlet pipe 161, and hot water in the chamber of the copper-steel composite water jacket is discharged through the water outlet pipe 162.

[0047] In this embodiment, the left and right sides of the steel bar 12 are symmetrically welded with oblique upward steel columns 17, the outer side of the steel bar 2 13 is centrally welded with an oblique upward steel column 2 18, an oblique steel column 3 19 is welded between the adjacent ends of the steel bar 12 and the steel bar 2 13, and the left and right sides of the steel section 14 are symmetrically welded with oblique upward steel columns 4 20. A pair of "︹" steel columns 5 21 are connected across the front and rear steel bars 12, and a pair of steel columns 6 22 are welded between the steel column 5 21 and each steel tube 15.

[0048] In this embodiment, the forming process of the copper-steel composite water jacket includes the following steps:

[0049] Step 1: Prepare steel parts: Use Q235 steel plates to make steel bar 12, steel bar 2 13, steel segment 14 and steel plate 16, and use Q235 seamless steel pipe to make steel pipe 15;

[0050] Step 2: Welding embedded parts: Weld oblique steel columns 17 symmetrically on the left and right sides of the steel bar 12, weld oblique steel columns 2 18 centered on the outer side of the steel bar 2 13, weld oblique steel columns 3 19 between the adjacent ends of the steel bars 12 and 2 13, weld oblique steel columns 4 20 symmetrically on the left and right sides of the steel section 14, weld a pair of steel columns 5 21 in the shape of "︹" across between the front and rear steel bars 12, and weld a pair of steel columns 6 22 between the steel columns 5 21 and each steel tube 15;

[0051] Step 3: Modeling: Place the wooden mold on the modeling plate, place the sand box on it, and make the cavity;

[0052] Step 4: Preheating: Place the sand box in the drying room and burn it at 360℃ for 6 to 7 hours until the sand box is dry and free of moisture.

[0053] Step 5: Place the embedded parts: Place and fix the prepared embedded parts in the preheated cavity, cover the cover box, and fix it firmly;

[0054] Step 6: Melting: Place the copper plate in an electric furnace and melt it to a temperature of 1140-1160°C. The copper liquid is then taken out of the furnace and poured into a preheated ladle.

[0055] Step 7: Pouring: Control the pouring speed at 1.0m / s, pour the copper liquid into the cavity, and wait for solidification;

[0056] Step 8: Unpacking: Unpack the box 10 to 15 minutes after pouring and take out the casting blank;

[0057] Step 9: Sawing the riser: Saw off the riser of the blank;

[0058] Step 10: Machining: Machining the blank as required to obtain a copper substrate 11;

[0059] Step 11: Spraying: Evenly spraying metal powder containing copper or copper alloy on the inner wall of the copper substrate 11 to obtain an anti-permeation layer;

[0060] Step 12: Check the bonding: Place the copper substrate 11 horizontally and fill the water storage tank 11a of the copper substrate 11 with water. Then, observe whether the copper substrate 11 leaks.

[0061] Step 13: Welding embedded parts: First, seal-weld the steel plate 16 to the steel bar 12 and the steel bar 2 13, and then seal-weld the steel plate 16 to the steel section 14 and the steel pipe 15, to obtain a copper-steel composite water jacket.

[0062] Step 14: Test water pressure resistance: Fill the copper-steel composite water jacket with 0.45 MPa water flow and check whether the outer surface of the copper-steel composite water jacket is leaking.

[0063] In practical application, this copper-steel composite water jacket:

[0064] 1. The copper-steel composite water jacket is a new, energy-efficient, bimetallic composite material, made of copper as the base material and integrally cast with high-quality steel. Through a special processing technique and high-temperature integral casting, the two materials are bonded together at high temperatures, making them inseparable. This new type of water jacket combines the corrosion resistance, wear resistance, and high thermal conductivity of copper with the excellent weldability, formability, and ductility of carbon steel and the excellent overall mechanical properties of steel.

[0065] 2. The revised processing flow simplifies and improves component production efficiency. It can be widely used in industries such as metallurgy, machinery, and nuclear power. This is a brand-new process with significant advantages: ① After copper and steel are clad, their respective performance advantages complement each other, expanding their application range. ② The clad quality is high, and the interface with other components utilizes the weldability of steel to achieve a complete metallurgical bond, greatly enhancing the usability of the water jacket. ③ It expands the application range of copper and meets the needs of social development. ④ It meets the needs of national industrial restructuring.

[0066] Therefore, the embodiments disclosed above are only illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are encompassed by the present invention.

Claims

1. A copper-steel composite water jacket, characterized by: It comprises a copper substrate (11), a first steel bar (12), a second steel bar (13), a steel segment (14), a steel tube (15) and a steel plate (16), wherein: The copper base (11) is provided with a rectangular water storage groove (11a) on the upper side, and the copper base (11) has a rectangular array of rectangular bosses (111) in the entire water storage groove (11a), and the copper base (11) has a circular boss (112) in a linear array in the middle of the water storage groove (11a), and a circular through-opening (11b) is coaxially provided at the center of the boss (112); The steel bar (12) is provided with a pair and is symmetrically embedded in the front and rear sides of the copper base (11), and two rows of circular coupling holes (12a) are staggeredly distributed in the middle and lower part of the steel bar (12); The second steel bar (13) is provided with a pair and is symmetrically embedded on the left and right sides of the copper base (11), and two rows of circular coupling holes (13a) are staggeredly distributed in the middle and lower part of the second steel bar (13); The steel segments (14) are provided with a plurality of them and are correspondingly embedded in each boss one (111), and two rows of circular coupling holes three (14a) are staggeredly distributed in the middle and lower part of the steel segment (14); The steel tubes (15) are provided in a plurality and are correspondingly embedded in each boss 2 (112). The lower end of the steel tube (15) is beveled, and two rows of circular coupling holes (15a) are staggeredly distributed in the middle and lower part of the steel tube (15). The steel plate (16) is horizontally arranged above the water storage tank (11a) and its lower surface contacts the upper surface of the copper base (11), boss 1 (111) and boss 2 (112); the steel plate (16) is gap-fitted with the rectangular frame surrounded by two steel bars 1 (12) and two steel bars 2 (13); the steel plate (16) is sealed and welded with steel bars 1 (12) and steel bars 2 (13); the steel plate (16) is provided with a rectangular fitting opening 1 (16a) above each steel section (14); the steel section (14) is gap-fitted with the fitting opening 1 (16a); the steel plate (16) is provided with a circular fitting opening 2 (16b) above each steel pipe (15); the steel pipe (15) is gap-fitted with the fitting opening 2 (16b); the steel plate (16) is sealed and welded with the steel section (14) and the steel pipe (15); A water inlet pipe (161) and a water outlet pipe (162) are welded to the left and right sides of the steel plate (16), respectively; The left and right sides of the steel bar 1 (12) are symmetrically welded with an obliquely upward steel column 1 (17), the outer side of the steel bar 2 (13) is centrally welded with an obliquely upward steel column 2 (18), the adjacent ends of the steel bar 1 (12) and the steel bar 2 (13) are welded with an obliquely upward steel column 3 (19), the left and right sides of the steel section (14) are symmetrically welded with an obliquely upward steel column 4 (20), a pair of "︹" steel columns 5 (21) are connected across between the front and rear steel bars 1 (12), and a pair of steel columns 6 (22) are welded between the steel column 5 (21) and each steel tube (15); The forming process of the copper-steel composite water jacket includes the following steps: Step 1: Prepare steel parts: Use Q235 steel plates to make steel bar 1 (12), steel bar 2 (13), steel segment (14) and steel plate (16), and use Q235 seamless steel pipe to make steel pipe (15); Step 2: Welding embedded parts: symmetrically weld upwardly inclined steel column 1 (17) on the left and right sides of steel bar 1 (12), weld upwardly inclined steel column 2 (18) in the center of the outer side of steel bar 2 (13), weld upwardly inclined steel column 3 (19) between the adjacent ends of steel bar 1 (12) and steel bar 2 (13), weld upwardly inclined steel column 4 (20) symmetrically on the left and right sides of the steel section (14), weld a pair of "︹" steel column 5 (21) across between the front and rear steel bars 1 (12), and weld a pair of steel column 6 (22) between steel column 5 (21) and each steel pipe (15); Step 3: Modeling: Place the wooden mold on the modeling plate, place the sand box on it, and make the cavity; Step 4: Preheating: Place the sand box in the drying room and burn it at 360℃ for 6 to 7 hours until the sand box is dry and free of moisture. Step 5: Place the embedded parts: Place and fix the prepared embedded parts in the preheated cavity, cover the cover box, and fix it firmly; Step 6: Melting: Place the copper plate in an electric furnace and melt it to a temperature of 1140-1160°C. The copper liquid is then taken out of the furnace and poured into a preheated ladle. Step 7: Pouring: Control the pouring speed at 1.0m / s, pour the copper liquid into the cavity, and wait for solidification; Step 8: Unpacking: Unpack the box 10 to 15 minutes after pouring and take out the casting blank; Step 9: Sawing the riser: Saw off the riser of the blank; Step 10: Machining: machining the blank as required to obtain a copper substrate (11); Step 11: spraying: evenly spraying metal powder containing copper or copper alloy on the inner wall of the copper substrate (11) to obtain an anti-permeation layer; Step 12: Check the bonding property: Place the copper substrate (11) horizontally, and fill the water storage tank (11a) of the copper substrate (11) with water, and then observe whether the copper substrate (11) leaks. Step 13: Welding embedded parts: First, seal-weld the steel plate (16) to the steel bar 1 (12) and the steel bar 2 (13), and then seal-weld the steel plate (16) to the steel section (14) and the steel pipe (15), to obtain a copper-steel composite water jacket; Step 14: Test water pressure resistance: Fill the copper-steel composite water jacket with 0.45 MPa water flow and check whether the outer surface of the copper-steel composite water jacket is leaking.

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