CN116117458A - Complex water cooling channel hot isostatic pressing composite copper pipe water cooling module and manufacturing method thereof - Google Patents

Complex water cooling channel hot isostatic pressing composite copper pipe water cooling module and manufacturing method thereof Download PDF

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Publication number
CN116117458A
CN116117458A CN202310160952.9A CN202310160952A CN116117458A CN 116117458 A CN116117458 A CN 116117458A CN 202310160952 A CN202310160952 A CN 202310160952A CN 116117458 A CN116117458 A CN 116117458A
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CN
China
Prior art keywords
copper pipe
water cooling
cast
pipe
module
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Pending
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CN202310160952.9A
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Chinese (zh)
Inventor
周传禄
姜洪军
安铭
辛虹霓
栾光涛
赵存粮
赵洋
孟宪辉
景盛东
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Shandong Tianming Heavy Industry Technology Co ltd
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Shandong Tianming Heavy Industry Technology Co ltd
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Priority to CN202310160952.9A priority Critical patent/CN116117458A/en
Publication of CN116117458A publication Critical patent/CN116117458A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0072—Casting in, on, or around objects which form part of the product for making objects with integrated channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • B22D31/002—Cleaning, working on castings
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/09—Heat pipes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

The invention relates to a complex water cooling channel hot isostatic pressing composite copper pipe water cooling module and a manufacturing method thereof, comprising a cast molding module parent body and cast steel pipes cast into the module parent body, wherein both ends of the cast steel pipes are positioned outside the module parent body, and copper pipes penetrating into the cast steel pipes after casting molding are attached to the inner walls of the cast steel pipes after high-temperature and high-pressure expansion.

Description

Complex water cooling channel hot isostatic pressing composite copper pipe water cooling module and manufacturing method thereof
Technical Field
The invention relates to the field of casting water-cooling modules, in particular to a complex water-cooling channel hot isostatic pressing composite copper pipe water-cooling module and a manufacturing method thereof.
Background
The casting water cooling module is widely applied to high-temperature furnaces such as an arc furnace, an ore-smelting furnace, a hydrogen reduction furnace, an iron-making blast furnace and the like, and has the main functions of resisting high heat, abrasion and corrosion in the high-temperature furnaces and maintaining the strength and rigidity of furnace shells. The existing cast water cooling module is to cast a low carbon steel pipe into a cast steel or cast iron matrix, the steel pipe is required to bear long-time scouring and etching of high temperature steel/molten iron in the module casting process, in order to prevent carburization and melting of the low carbon steel pipe by the high temperature steel/molten iron, high temperature resistant paint with the thickness of about 0.3mm is required to be coated on the outer surface of the steel pipe, the paint component generally comprises silicon dioxide, alumina micropowder and the like, the heat conductivity coefficient is low, a coating thermal barrier is formed between the water pipe and the matrix, and an air gap thermal barrier is formed between the matrix and the water pipe, and the two thermal barriers reduce the comprehensive heat conducting capacity of the cast steel or cast iron water cooling module to about one tenth of the heat conducting capacity of the body. The water cooling module with low cooling capacity is used in a high-temperature environment, the temperature of the module body is necessarily high due to low heat conduction capacity, the comprehensive mechanical property of the module is reduced in a straight line, the service function and the service life of the water cooling module are greatly reduced, and the safety production of a high-temperature kiln is endangered.
The invention patent with application number 201810297874.6 discloses a high-efficiency long-life pre-penetrating pipe cast iron cooling wall and a manufacturing process thereof. However, as the copper pipe or the aluminum pipe is inserted into the application in advance and is to be poured together with the theme, in the casting process, if inert low-temperature fluid is not introduced into the pre-inserted pipe, high-temperature steel/molten iron which is far higher than the melting point of the copper or the aluminum can inevitably cause the copper pipe/the aluminum pipe to be melted; if a large flow of low-temperature inert fluid is introduced into the pre-penetrating pipe, a large gap between the outer wall of the steel pipe and a parent body is necessarily caused under the strong cooling condition, and the meaning of pre-penetrating copper pipe/aluminum pipe is completely lost.
Disclosure of Invention
The invention provides a complex water cooling channel hot isostatic pressing composite copper pipe water cooling module and a manufacturing method thereof, aiming at the defects of the prior art.
The invention provides a manufacturing method of a complex water cooling channel hot isostatic pressing composite copper pipe water cooling module, which is realized by the following technical scheme that:
a. manufacturing a water-cooling module model containing cast steel pipes;
b. selecting a copper pipe with the outer diameter of 1/4-1/3 of the inner diameter of the cast-in steel pipe, performing high-temperature softening annealing on the copper pipe, and performing passivation treatment after acid washing and oxide scale removal;
c. closing a pipe orifice at one end of the copper pipe, and rotationally penetrating the copper pipe into the cast-in steel pipe;
d. closing the pipe orifice at the other end of the copper pipe, reserving an air inlet, injecting high-pressure inert gas into the copper pipe through the air inlet, and closing the air inlet;
e. and (3) placing the water-cooling module into an annealing kiln, heating to 850-890 ℃ and preserving heat, wherein inert gas in the copper pipe expands in volume at high temperature, and simultaneously, at high temperature, the high-pressure gas in the copper pipe expands to uniformly expand the copper pipe, and the diameter of the copper pipe is continuously thickened until the copper pipe is restrained by the inner wall of the cast-in steel pipe, so that the copper pipe is tightly attached to the inner wall of the cast-in steel pipe.
As optimization, the pipe orifice at the other end of the copper pipe in the step d is closed through an expansion sealing mechanism, the pipe orifice of the copper pipe is tightly expanded on the inner wall of the cast-in steel pipe through a reaming device before closing, the expansion sealing mechanism comprises a sealing cover cap, a blocking plate and a bolt, wherein the sealing cover cap is fixedly connected on the pipe orifice of the cast-in steel pipe in a sealing manner, the bolt is positioned in the copper pipe and is used for connecting the blocking plate and the sealing cover cap, a ceramic powder plug is arranged between the blocking plate and the sealing cover cap, and the air inlet is formed in the bolt.
As optimization, the sealing cap is connected with a pipe orifice of the cast-in steel pipe through threads.
And (c) carrying out acid washing, rust removal, passivation and drying treatment on the inner wall of the cast-in steel pipe between the step a and the step c.
Preferably, the pressure of the high-pressure inert gas in the step d is 130-160Mpa.
As optimization, the heat preservation time in the step e is calculated according to the thickness of the water cooling module and the heat preservation time is 1 hour every 25 mm.
The utility model provides a complex water cooling passageway hot isostatic pressing composite copper pipe water cooling module, includes cast molding's module parent and casts the steel pipe of casting into in the module parent, cast steel pipe's both ends all are located the module parent outside, still include the copper pipe of penetrating cast steel pipe after the cast molding, copper pipe passes through high temperature high pressure expansion back and casts the laminating of steel pipe inner wall.
The beneficial effects of the invention are as follows: according to the complex water cooling channel hot isostatic pressing composite copper pipe water cooling module and the manufacturing method thereof, coating heat barriers and air gap heat barriers of a traditional water cooling module pipeline are eliminated, the pipeline (water cooling channel) in the water cooling module is metallurgically bonded with a parent body, the copper pipe is metallurgically bonded with a cast-in steel pipe (water cooling channel) in the module, the heat exchange capacity of the water cooling channel is greatly improved, the comprehensive heat conduction capacity of the complex water cooling channel hot isostatic pressing composite deoxidizing copper pipe water cooling module is close to the heat conduction capacity of a parent body material of the module.
Taking a traditional cast iron water cooling module as an example, the original comprehensive heat conduction capacity is about 10W/m.k, after the hot isostatic pressing composite copper pipe is adopted, the comprehensive heat conduction capacity is improved to about 30W/m.k, the service life of the water cooling module is greatly prolonged, and the safe, efficient and long-service-life operation of the high-temperature kiln is ensured.
Drawings
FIG. 1 is a front view of a water cooling module according to the present invention;
FIG. 2 is a side cross-sectional view of the present invention;
FIG. 3 is a cross-sectional view of the expansion seal mechanism of the present invention;
the figure shows:
1. the module matrix, 2, cast steel pipe, 3, copper pipe, 4, bolt, 5, sealing cap, 6, inlet port, 7, closure plate, 8, ceramic powder plug.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
As shown in figures 1-3 of the drawings,
a complex water cooling channel hot isostatic pressing composite copper pipe water cooling module comprises a cast molding module matrix 1 and cast steel pipes 2 cast into the module matrix 1, wherein the module matrix 1 is made of cast iron or cast steel, and the cast steel pipes 2 are arranged in the module matrix 1 in a curve state.
Both ends of the cast-in steel pipe 2 are positioned outside the module matrix 1, so that water inlet and water outlet are convenient to connect.
The copper pipe 3 is penetrated into the cast-in steel pipe 2 after casting and forming, and the copper pipe 3 is attached to the inner wall of the cast-in steel pipe 2 after high-temperature high-pressure expansion.
A manufacturing method of a complex water cooling channel hot isostatic pressing composite copper pipe water cooling module comprises the following steps:
a. manufacturing a water-cooling module model containing cast steel pipes 2; the water-cooling module model comprises a module matrix 1 and cast-in steel pipes 2;
the casting temperature of the water-cooling module is 1340-1360 ℃ when the module matrix 1 is cast iron; the module matrix 1 is water-cooled module casting temperature 1530-1560 ℃ when cast steel, cooled to below 350 ℃ after casting, cleaned and polished.
And (3) carrying out acid washing, rust removal, passivation and drying treatment on the inner wall of the cast-in steel pipe 2.
b. Copper pipe 3 with the outer diameter of 1/4-1/3 of the inner diameter of cast-in steel pipe 2 is selected, high-temperature softening annealing is carried out on copper pipe 3, and then passivation treatment is carried out after acid washing and oxide scale removal.
c. And closing a pipe orifice at one end of the copper pipe 3 by using a pressing clamp, rotating the copper pipe 3 to penetrate into the cast-in steel pipe 2, and cutting off the excess copper pipe of which the screwed-in end is exposed out of the cast-in steel pipe 2 after penetrating.
d. The pipe orifice at the other end of the copper pipe 3 is sealed, an air inlet hole 6 is reserved, in the embodiment, the pipe orifice at the other end of the copper pipe 3 is sealed through an expansion sealing mechanism, and the pipe orifice of the copper pipe 3 is tightly expanded on the inner wall of the cast-in steel pipe 2 through a reaming device before sealing.
As shown in fig. 3, the expansion sealing mechanism comprises a sealing cap 5, a blocking plate 7 and a bolt 4, wherein the sealing cap 5 is fixedly connected to the pipe orifice of the cast-in steel pipe 2 in a sealing manner, the blocking plate 7 is positioned in the copper pipe 3, the bolt 4 is connected with the blocking plate 7 and the sealing cap 5, and the air inlet hole 6 is formed in the bolt 4. The sealing cap 5 is connected with the pipe orifice of the cast-in steel pipe 2 through threads, so that the sealing cap 5 is convenient to detach.
The ceramic powder plug 8 is arranged between the blocking plate 7 and the sealing cap 5, radial expansion is generated under the axial pressure in the use process of the ceramic powder plug 8, the radial expansion force of the ceramic powder plug 8 is larger when the gas pressure in the pipe is larger, the friction force between the ceramic powder plug 8 and the pipe wall is larger, and the reliable sealing effect under the ultrahigh gas pressure is achieved.
High-pressure inert gas is injected into the copper pipe 3 through the air inlet 6, the pressure of the high-pressure inert gas is 130-160Mpa, and then the air inlet 6 is closed.
e. The water-cooled module is placed into an annealing furnace, which in the embodiment is a vacuum annealing furnace or a reducing atmosphere annealing furnace, and the temperature is raised to 850-890 ℃ and kept at the same time, and the heat-preserving time is calculated according to the thickness of the water-cooled module and kept at the same time for 1 hour every 25 mm.
Under the heating condition, the inert gas in the copper pipe 3 is heated to 850-890 ℃ along with the module parent body 1, the volume expansion of the inert gas in the copper pipe 3 is about 30 times at high temperature, the gas pressure is rapidly increased, thereby the hot isostatic pressing condition is automatically established in the copper pipe 3, the tensile strength of deoxidized copper is only below 10% of the original strength at such high temperature, the high-pressure gas expansion in the copper pipe 3 enables the copper pipe 3 to be uniformly expanded under the isostatic pressing condition, the diameter of the copper pipe 3 is continuously thickened until the copper pipe 3 is constrained by the inner wall of the cast-in steel pipe 2, the copper pipe 3 is tightly attached to the inner wall of the cast-in steel pipe 2, and the pressure in the copper pipe 3 is still above 30 MPa.
Under the conditions of high temperature, high pressure and long enough time, stable and reliable conditions are created for realizing metallurgical bonding of the copper pipe 3 and the cast-in steel pipe 2. The establishment of the hot isostatic pressing condition of the copper pipe 3 is completed in the homogenizing annealing of the cast steel water cooling module or the graphitizing annealing process of the cast iron water cooling module, so that the additional cost is not increased, and the cost performance of the complex water cooling channel hot isostatic pressing composite copper pipe water cooling module is greatly improved.
Of course, the above description is not limited to the above examples, and the technical features of the present invention that are not described may be implemented by or by using the prior art, which is not described herein again; the above examples and drawings are only for illustrating the technical scheme of the present invention and not for limiting the same, and the present invention has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art without departing from the spirit of the present invention and the scope of the appended claims.

Claims (7)

1. The manufacturing method of the complex water cooling channel hot isostatic pressing composite copper pipe water cooling module is characterized by comprising the following steps of:
a. manufacturing a water-cooling module model containing cast-in steel pipes (2);
b. selecting a copper pipe (3) with the outer diameter of 1/4-1/3 of the inner diameter of the cast-in steel pipe (2), performing high-temperature softening annealing on the copper pipe (3), and performing passivation treatment after acid washing and oxide scale removal;
c. closing a pipe orifice at one end of the copper pipe (3), and rotationally penetrating the copper pipe (3) into the cast-in steel pipe (2);
d. the pipe orifice at the other end of the copper pipe (3) is sealed, an air inlet hole (6) is reserved, high-pressure inert gas is injected into the copper pipe (3) through the air inlet hole (6), and the air inlet hole (6) is sealed;
e. and (3) placing the water-cooling module into an annealing kiln, heating to 850-890 ℃ and preserving heat, wherein inert gas in the copper pipe (3) expands in volume at high temperature, and simultaneously, at high temperature, high-pressure gas in the copper pipe (3) expands to uniformly expand the copper pipe (3), so that the diameter of the copper pipe (3) is continuously thickened until the copper pipe is constrained by the inner wall of the cast-in steel pipe (2), and the copper pipe (3) is tightly attached to the inner wall of the cast-in steel pipe (2).
2. The method for manufacturing the complex water cooling channel hot isostatic pressing composite copper pipe water cooling module as claimed in claim 1, wherein the method comprises the following steps: in the step d, the pipe orifice at the other end of the copper pipe (3) is sealed through an expansion sealing mechanism, the pipe orifice of the copper pipe (3) is tightly expanded on the inner wall of the cast-in steel pipe (2) through reaming equipment before sealing, the expansion sealing mechanism comprises a sealing cap (5) which is fixedly connected on the pipe orifice of the cast-in steel pipe (2) in a sealing manner, a blocking plate (7) which is positioned in the copper pipe (3) and a bolt (4) which is used for connecting the blocking plate (7) and the sealing cap (5), a ceramic powder plug (8) is arranged between the blocking plate (7) and the sealing cap (5), and the air inlet hole (6) is formed in the bolt (4).
3. The method for manufacturing the complex water cooling channel hot isostatic pressing composite copper pipe water cooling module as claimed in claim 2, wherein the method comprises the following steps: the sealing cap (5) is connected with a pipe orifice of the cast-in steel pipe (2) through threads.
4. The method for manufacturing the complex water cooling channel hot isostatic pressing composite copper pipe water cooling module as claimed in claim 1, wherein the method comprises the following steps: and c, carrying out acid washing, rust removal, passivation and drying treatment on the inner wall of the cast-in steel pipe (2) between the step a and the step c.
5. The method for manufacturing the complex water cooling channel hot isostatic pressing composite copper pipe water cooling module as claimed in claim 1, wherein the method comprises the following steps: the pressure of the high-pressure inert gas in the step d is 130-160Mpa.
6. The method for manufacturing the complex water cooling channel hot isostatic pressing composite copper pipe water cooling module as claimed in claim 1, wherein the method comprises the following steps: and e, calculating the heat preservation time in the step according to the thickness of the water cooling module, wherein the heat preservation time is 1 hour after every 25 mm.
7. A complex water cooling channel hot isostatic pressing composite copper pipe water cooling module is characterized in that: including cast molding's module parent (1) and cast into steel pipe (2) in module parent (1), the both ends of cast into steel pipe (2) all are located module parent (1) outside, still include cast molding back and penetrate copper pipe (3) in cast into steel pipe (2), copper pipe (3) are laminated with cast into steel pipe (2) inner wall after through high temperature high pressure expansion.
CN202310160952.9A 2023-02-24 2023-02-24 Complex water cooling channel hot isostatic pressing composite copper pipe water cooling module and manufacturing method thereof Pending CN116117458A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310160952.9A CN116117458A (en) 2023-02-24 2023-02-24 Complex water cooling channel hot isostatic pressing composite copper pipe water cooling module and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310160952.9A CN116117458A (en) 2023-02-24 2023-02-24 Complex water cooling channel hot isostatic pressing composite copper pipe water cooling module and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN116117458A true CN116117458A (en) 2023-05-16

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Country Status (1)

Country Link
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