CN113510451A - 3D special-shaped waterway manufacturing process - Google Patents
3D special-shaped waterway manufacturing process Download PDFInfo
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- CN113510451A CN113510451A CN202110421780.7A CN202110421780A CN113510451A CN 113510451 A CN113510451 A CN 113510451A CN 202110421780 A CN202110421780 A CN 202110421780A CN 113510451 A CN113510451 A CN 113510451A
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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
- B23P15/24—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies
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- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
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- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- 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
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/24—Cleaning or pickling metallic material with solutions or molten salts with neutral solutions
Abstract
The invention relates to the technical field of mold manufacturing, and discloses a 3D special-shaped waterway mold manufacturing process, which comprises the following steps: (1) preparing materials, wherein the materials comprise a beryllium copper upper layer, a red copper middle layer and a red copper lower layer; (2) performing outer surface treatment, namely performing hole opening treatment on the beryllium copper upper layer, the red copper middle layer and the red copper lower layer, and machining a special-shaped water channel on the outer surface of the red copper lower layer through CNC; (3) diffusion welding, namely welding the red copper middle layer and the red copper lower layer together; (4) copper heat treatment, namely performing heat treatment on the red copper middle layer and the red copper lower layer; (5) a positive angle profile; (6) and (4) assembling, namely screwing and fixing the copper upper layer, the red copper middle layer and the red copper lower layer through screws. The 3D special-shaped waterway mold manufacturing process is simple in process, resource-saving and low in manufacturing cost, and the special-shaped waterway and the beryllium copper upper layer are arranged, so that the heat dissipation speed is high, the purposes of high temperature resistance, long service life, high thermal fatigue performance, high thermal stability and excellent comprehensive performance are achieved, and the 3D special-shaped waterway mold manufacturing process has a wide market prospect.
Description
Technical Field
The invention relates to the technical field of mold manufacturing, in particular to a 3D special-shaped waterway mold manufacturing process.
Background
An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.
The metal material from which the metal mold is made is typically an alloy, such as nickel-chromium alloy steel. As is well known, the cycle of producing the alloy mold is usually long, the cost is very high, the service life is short, the heat dissipation effect is poor, the comprehensive performance is not ideal, therefore, when a large quantity of formed products or parts are needed, the alloy mold needs to be frequently repaired or opened again, the production cost of the products or the parts is increased, the market competitiveness of the products or the parts is not favorably improved, the mold made of non-metal materials is long in curing time, poor in performance and dimensional stability, not enough in strength, incapable of realizing the functions of forming, edge cutting and hole opening at the same time, and needing subsequent processing procedures such as edge cutting and hole opening, the procedures are complex, the production efficiency is low, and the phenomenon of abnormal fracturing is easy to occur.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a 3D special-shaped waterway mold manufacturing process, which has the advantages of high temperature resistance, long service life, high thermal fatigue performance, high thermal stability, excellent comprehensive performance and the like, and solves the problems of high cost, short service life, poor heat dissipation effect and unsatisfactory comprehensive performance.
(II) technical scheme
The invention provides the following technical scheme: A3D special-shaped waterway mold manufacturing process comprises the following steps:
(1) preparing materials, wherein the materials comprise a beryllium copper upper layer, a red copper middle layer and a red copper lower layer;
(2) performing outer surface treatment, namely performing hole opening treatment on the beryllium copper upper layer, the red copper middle layer and the red copper lower layer, and machining a special-shaped water channel on the outer surface of the red copper lower layer through CNC;
(3) diffusion welding, namely welding the red copper middle layer and the red copper lower layer together;
(4) copper heat treatment, namely performing heat treatment on the red copper middle layer and the red copper lower layer;
(5) a positive angle profile;
(6) and (4) assembling, namely screwing and fixing the copper upper layer, the red copper middle layer and the red copper lower layer through screws.
Preferably, the beryllium copper upper layer contains the following chemical components in percentage by weight: 0.2 to 0.6 percent of beryllium, 0.1 to 0.3 percent of chromium, 2 to 3.5 percent of manganese, 2 to 4 percent of ferrum, 12 to 15 percent of aluminum, 0.2 to 0.4 percent of nickel, 0.001 to 0.005 percent of lead, and the balance of copper and inevitable trace impurities.
Through the beryllium copper upper layer, the beryllium copper is a supersaturated solid solution copper-based alloy, is a non-ferrous alloy with good combination of mechanical property, physical property, chemical property and corrosion resistance, has high strength limit, elastic limit, yield limit and fatigue limit equivalent to special steel after solid solution and aging treatment, and simultaneously has high electric conductivity, thermal conductivity, high hardness and wear resistance, high creep resistance and corrosion resistance, effectively improves the hardness and strength of the die, has higher thermal conductivity, and is matched with a special-shaped water path for use, thereby further improving the heat dissipation speed of the die.
Preferably, the method also comprises a heat treatment method of the red copper middle layer and the red copper lower layer:
s1, cleaning, namely cleaning the red copper middle layer and the red copper lower layer, and drying;
s2, heating, namely putting the red copper middle layer and the red copper lower layer into a heat treatment furnace, firstly raising the temperature to 320-380 ℃ and keeping the temperature for 1-3h, then raising the furnace temperature of the heating furnace to 570-590 ℃ and keeping the temperature for 1-2 h;
s3, quenching, namely putting the red copper into quenching oil for quenching;
s4, cooling and cleaning, taking out the quenched red copper middle layer and the red copper lower layer, and cleaning;
s5 tempering, namely, putting the cleaned red copper middle layer and the cleaned red copper lower layer into a tempering furnace for tempering at the temperature of 270-290 ℃ for 2-4h, and then cooling the furnace to room temperature.
And S6 shot blasting.
Preferably, in the step S2, a protective atmosphere needs to be introduced, where the protective atmosphere is one of methanol, nitrogen, and argon.
Preferably, the quenching liquid is PAG quenching agent with the concentration of 10%.
The PAG quenchant is an aqueous solution of a liquid organic polymer and a corrosion inhibitor. The organic polymer is completely soluble in water to form a clear, homogeneous solution.
Preferably, in the step S4, the cleaning is performed for 10-30min by using a solution in which thiodiglycol and water are miscible in a volume ratio of 1:10, and then the middle layer and the lower layer of the red copper are rinsed by using water.
The middle layer and the lower layer of the red copper are cleaned by the thiodiglycol aqueous solution, so that the residual quenching oil on the surfaces of the middle layer and the lower layer of the red copper can be dissolved into the solution, the cleaning speed of the quenching oil is accelerated, the cleaning efficiency of the middle layer and the lower layer of the red copper is improved, and in addition, the residual thiodiglycol aqueous solution on the middle layer and the lower layer of the red copper can be easily removed by washing with water.
Preferably, in the step S5, the red copper middle layer and the red copper lower layer are firstly immersed in a benzotriazole solution for 5-7min, the benzotriazole solution is formed by mixing benzotriazole crystals with hot water at 40-50 ℃ according to a mass ratio of 1:520, and then tempering is performed.
After the red copper middle layer and the red copper lower layer are immersed in the benzotriazole solution for a period of time, a layer of antioxidant can be formed on the surfaces of the red copper middle layer and the red copper lower layer to reduce oxidation of the red copper middle layer and the red copper lower layer, and the benzotriazole can be decomposed during tempering.
(III) advantageous effects
Compared with the prior art, the invention provides a 3D special-shaped waterway mold manufacturing process, which has the following beneficial effects:
1. this 3D dysmorphism water route mould manufacturing process, through the dysmorphism water route that sets up, dysmorphism water route overall arrangement should change along with the product shape changes, can be along with product shape evenly distributed to further reduce the shaping cycle, improve the added value of product, can be according to injection molding shape complexity, reduce cooling time 20% -80%, reduce the variable vector 15% to 90%, make final profit increase substantially.
2. According to the manufacturing process of the 3D special-shaped waterway mold, the beryllium copper is arranged on the upper layer, is a supersaturated solid solution copper-based alloy, is a colored alloy with good combination of mechanical property, physical property, chemical property and corrosion resistance, has high strength limit, elastic limit, yield limit and fatigue limit equivalent to that of special steel after solid solution and aging treatment, and simultaneously has high electric conductivity, thermal conductivity, high hardness and wear resistance, high creep resistance and corrosion resistance, effectively improves the hardness and strength of the mold, has high thermal conductivity, is matched with a special-shaped waterway for use, and further improves the heat dissipation speed of the mold.
3. This 3D dysmorphism water route mould manufacturing process, red copper middle level and lower floor are when producing, through carrying out the secondary heating to it, and all keep certain time under current temperature after the heating each time, make the heat can be transmitted to inside by red copper middle level and lower floor outside gradually, so that the inside and outside of whole red copper middle level and red copper lower floor all can reach the inside temperature of heating furnace, and then make its inside and outside can be heated evenly, in follow-up course of working, be favorable to improving the quality of red copper middle level and lower floor.
4. According to the 3D special-shaped waterway mold manufacturing process, the middle layer and the lower layer of the red copper are cleaned by the thiodiglycol aqueous solution, so that the residual quenching oil on the surfaces of the middle layer and the lower layer of the red copper can be dissolved into the solution, the cleaning speed of the quenching oil is accelerated, the cleaning efficiency of the middle layer and the lower layer of the red copper is improved, and in addition, the residual thiodiglycol aqueous solution on the middle layer and the lower layer of the red copper can be easily removed by washing with water.
5. The manufacturing process of the 3D special-shaped waterway mold is simple in process, resource-saving and low in manufacturing cost, the mold is heated uniformly during production, oxides can be formed on the outer surface of the tempered waterway mold, the corrosion resistance and the wear resistance of the mold are improved, the heat dissipation speed is high through the arranged special-shaped waterway and the beryllium copper upper layer, the purposes of high temperature resistance, long service life, high thermal fatigue resistance, high thermal stability and excellent comprehensive performance are achieved, and the 3D special-shaped waterway mold has a wide market prospect.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: A3D special-shaped waterway mold manufacturing process comprises the following steps:
(1) preparing materials, wherein the materials comprise a beryllium copper upper layer, a red copper middle layer and a red copper lower layer;
(2) performing outer surface treatment, namely performing hole opening treatment on the beryllium copper upper layer, the red copper middle layer and the red copper lower layer, and machining a special-shaped water channel on the outer surface of the red copper lower layer through CNC;
(3) diffusion welding, namely welding the red copper middle layer and the red copper lower layer together;
(4) copper heat treatment, namely performing heat treatment on the red copper middle layer and the red copper lower layer;
(5) a positive angle profile;
(6) assembling, namely screwing and fixing the upper copper layer, the middle red copper layer and the lower red copper layer by screws;
further, the beryllium copper upper layer comprises the following chemical components in percentage by weight: 0.2% of beryllium, 0.1% of chromium, 2% of manganese, 2% of iron, 12% of aluminum, 0.2% of nickel, 0.001% of lead, and the balance of copper and inevitable trace impurities.
Further, the heat treatment method of the red copper middle layer and the red copper lower layer comprises the following steps:
s1, cleaning, namely cleaning the red copper middle layer and the red copper lower layer, and drying;
s2, heating, namely putting the red copper middle layer and the red copper lower layer into a heat treatment furnace, heating to 320 ℃ firstly, and keeping for 1h, and then heating the furnace to 570 ℃ again and keeping for 1 h;
s3, quenching, namely putting the red copper into quenching oil for quenching;
s4, cooling and cleaning, taking out the quenched red copper middle layer and the red copper lower layer, and cleaning;
s5 tempering, namely, putting the cleaned red copper middle layer and the cleaned red copper lower layer into a tempering furnace for tempering at 270 ℃ for 2 hours, and then cooling the furnace to room temperature.
And S6 shot blasting.
Further, in the step S2, a protective atmosphere needs to be introduced, where the protective atmosphere is one of methanol, nitrogen, and argon.
Further, the quenching liquid is PAG quenching agent with the concentration of 10%.
Further, in the step S4, the cleaning is performed for 10min by using a solution in which thiodiglycol and water are miscible in a volume ratio of 1:10, and then the middle layer and the lower layer of the red copper are rinsed by using water.
Further, in the step S5, the red copper middle layer and the red copper lower layer are firstly immersed in a benzotriazole solution for 5min, the benzotriazole solution is formed by mixing benzotriazole crystals and hot water at 40 ℃ according to a mass ratio of 1:520, and then tempering is performed.
Example two:
A3D special-shaped waterway mold manufacturing process comprises the following steps:
(1) preparing materials, wherein the materials comprise a beryllium copper upper layer, a red copper middle layer and a red copper lower layer;
(2) performing outer surface treatment, namely performing hole opening treatment on the beryllium copper upper layer, the red copper middle layer and the red copper lower layer, and machining a special-shaped water channel on the outer surface of the red copper lower layer through CNC;
(3) diffusion welding, namely welding the red copper middle layer and the red copper lower layer together;
(4) copper heat treatment, namely performing heat treatment on the red copper middle layer and the red copper lower layer;
(5) a positive angle profile;
(6) assembling, namely screwing and fixing the upper copper layer, the middle red copper layer and the lower red copper layer by screws;
further, the beryllium copper upper layer comprises the following chemical components in percentage by weight: 0.4% of beryllium, 0.2% of chromium, 3% of manganese, 3% of iron, 13.5% of aluminum, 0.3% of nickel, 0.003% of lead, and the balance of copper and inevitable trace impurities.
Further, the heat treatment method of the red copper middle layer and the red copper lower layer comprises the following steps:
s1, cleaning, namely cleaning the red copper middle layer and the red copper lower layer, and drying;
s2, heating, namely putting the red copper middle layer and the red copper lower layer into a heat treatment furnace, heating to 350 ℃ firstly, and keeping for 2 hours, and then heating the furnace to 580 ℃ again and keeping for 1-2 hours;
s3, quenching, namely putting the red copper into quenching oil for quenching;
s4, cooling and cleaning, taking out the quenched red copper middle layer and the red copper lower layer, and cleaning;
s5 tempering, namely, putting the cleaned red copper middle layer and the cleaned red copper lower layer into a tempering furnace for tempering at 280 ℃ for 3 hours, and then cooling the furnace to room temperature.
And S6 shot blasting.
Further, in the step S2, a protective atmosphere needs to be introduced, where the protective atmosphere is one of methanol, nitrogen, and argon.
Further, the quenching liquid is PAG quenching agent with the concentration of 10%.
Further, in the step S4, the cleaning is performed for 20min by using a solution in which thiodiglycol and water are miscible in a volume ratio of 1:10, and then the middle layer and the lower layer of the red copper are rinsed by using water.
Further, in the step S5, the red copper middle layer and the red copper lower layer are firstly immersed in the benzotriazole solution for 6min, the benzotriazole solution is formed by mixing benzotriazole crystals and 45 ℃ hot water according to the mass ratio of 1:520, and then tempering is performed
Example three:
A3D special-shaped waterway mold manufacturing process comprises the following steps:
(1) preparing materials, wherein the materials comprise a beryllium copper upper layer, a red copper middle layer and a red copper lower layer;
(2) performing outer surface treatment, namely performing hole opening treatment on the beryllium copper upper layer, the red copper middle layer and the red copper lower layer, and machining a special-shaped water channel on the outer surface of the red copper lower layer through CNC;
(3) diffusion welding, namely welding the red copper middle layer and the red copper lower layer together;
(4) copper heat treatment, namely performing heat treatment on the red copper middle layer and the red copper lower layer;
(5) a positive angle profile;
(6) assembling, namely screwing and fixing the upper copper layer, the middle red copper layer and the lower red copper layer by screws;
further, the beryllium copper upper layer comprises the following chemical components in percentage by weight: 0.6% of beryllium, 00.3% of chromium, 3.5% of manganese, 4% of iron, 15% of aluminum, 0.4% of nickel, 0.005% of lead and the balance of copper and inevitable trace impurities.
Further, the heat treatment method of the red copper middle layer and the red copper lower layer comprises the following steps:
s1, cleaning, namely cleaning the red copper middle layer and the red copper lower layer, and drying;
s2, heating, namely putting the red copper middle layer and the red copper lower layer into a heat treatment furnace, heating to 380 ℃ firstly, and keeping for 3 hours, and then heating the furnace to 590 ℃ again and keeping for 2 hours;
s3, quenching, namely putting the red copper into quenching oil for quenching;
s4, cooling and cleaning, taking out the quenched red copper middle layer and the red copper lower layer, and cleaning;
s5 tempering, namely, putting the cleaned red copper middle layer and the cleaned red copper lower layer into a tempering furnace for tempering at 290 ℃ for 4 hours, and then cooling the furnace to room temperature.
And S6 shot blasting.
Further, in the step S2, a protective atmosphere needs to be introduced, where the protective atmosphere is one of methanol, nitrogen, and argon.
Further, the quenching liquid is PAG quenching agent with the concentration of 10%.
Further, in the step S4, the cleaning is performed for 30min by using a solution in which thiodiglycol is miscible with water at a volume ratio of 10, and then the middle layer and the lower layer of the red copper are rinsed with water.
Further, in the step S5, the red copper middle layer and the red copper lower layer are firstly immersed in a benzotriazole solution for 7min, the benzotriazole solution is formed by mixing benzotriazole crystals and hot water at 50 ℃ according to a mass ratio of 1:520, and then tempering is performed.
The invention has the beneficial effects that:
1. this 3D dysmorphism water route mould manufacturing process, through the dysmorphism water route that sets up, dysmorphism water route overall arrangement should change along with the product shape changes, can be along with product shape evenly distributed to further reduce the shaping cycle, improve the added value of product, can be according to injection molding shape complexity, reduce cooling time 20% -80%, reduce the variable vector 15% to 90%, make final profit increase substantially.
2. According to the manufacturing process of the 3D special-shaped waterway mold, the beryllium copper is arranged on the upper layer, is a supersaturated solid solution copper-based alloy, is a colored alloy with good combination of mechanical property, physical property, chemical property and corrosion resistance, has high strength limit, elastic limit, yield limit and fatigue limit equivalent to that of special steel after solid solution and aging treatment, and simultaneously has high electric conductivity, thermal conductivity, high hardness and wear resistance, high creep resistance and corrosion resistance, effectively improves the hardness and strength of the mold, has high thermal conductivity, is matched with a special-shaped waterway for use, and further improves the heat dissipation speed of the mold.
3. This 3D dysmorphism water route mould manufacturing process, red copper middle level and lower floor are when producing, through carrying out the secondary heating to it, and all keep certain time under current temperature after the heating each time, make the heat can be transmitted to inside by red copper middle level and lower floor outside gradually, so that the inside and outside of whole red copper middle level and red copper lower floor all can reach the inside temperature of heating furnace, and then make its inside and outside can be heated evenly, in follow-up course of working, be favorable to improving the quality of red copper middle level and lower floor.
4. According to the 3D special-shaped waterway mold manufacturing process, the middle layer and the lower layer of the red copper are cleaned by the thiodiglycol aqueous solution, so that the residual quenching oil on the surfaces of the middle layer and the lower layer of the red copper can be dissolved into the solution, the cleaning speed of the quenching oil is accelerated, the cleaning efficiency of the middle layer and the lower layer of the red copper is improved, and in addition, the residual thiodiglycol aqueous solution on the middle layer and the lower layer of the red copper can be easily removed by washing with water.
5. The manufacturing process of the 3D special-shaped waterway mold is simple in process, resource-saving and low in manufacturing cost, the mold is heated uniformly during production, oxides can be formed on the outer surface of the tempered waterway mold, the corrosion resistance and the wear resistance of the mold are improved, the heat dissipation speed is high through the arranged special-shaped waterway and the beryllium copper upper layer, the purposes of high temperature resistance, long service life, high thermal fatigue resistance, high thermal stability and excellent comprehensive performance are achieved, and the 3D special-shaped waterway mold has a wide market prospect.
Claims (7)
1. The manufacturing process of the 3D special-shaped waterway mold is characterized by comprising the following steps of:
(1) preparing materials, wherein the materials comprise a beryllium copper upper layer, a red copper middle layer and a red copper lower layer;
(2) performing outer surface treatment, namely performing hole opening treatment on the beryllium copper upper layer, the red copper middle layer and the red copper lower layer, and machining a special-shaped water channel on the outer surface of the red copper lower layer through CNC;
(3) diffusion welding, namely welding the red copper middle layer and the red copper lower layer together;
(4) copper heat treatment, namely performing heat treatment on the red copper middle layer and the red copper lower layer;
(5) a positive angle profile;
(6) and (4) assembling, namely screwing and fixing the copper upper layer, the red copper middle layer and the red copper lower layer through screws.
2. The manufacturing process of the 3D special-shaped waterway mold according to claim 1, wherein the beryllium copper upper layer comprises the following chemical components in percentage by weight: 0.2 to 0.6 percent of beryllium, 0.1 to 0.3 percent of chromium, 2 to 3.5 percent of manganese, 2 to 4 percent of ferrum, 12 to 15 percent of aluminum, 0.2 to 0.4 percent of nickel, 0.001 to 0.005 percent of lead, and the balance of copper and inevitable trace impurities.
3. The manufacturing process of the 3D special-shaped waterway mold as claimed in claim 1, further comprising a heat treatment method of the red copper middle layer and the red copper lower layer:
s1, cleaning, namely cleaning the red copper middle layer and the red copper lower layer, and drying;
s2, heating, namely putting the red copper middle layer and the red copper lower layer into a heat treatment furnace, firstly raising the temperature to 320-380 ℃ and keeping the temperature for 1-3h, then raising the furnace temperature of the heating furnace to 570-590 ℃ and keeping the temperature for 1-2 h;
s3, quenching, namely putting the red copper into quenching oil for quenching;
s4, cooling and cleaning, taking out the quenched red copper middle layer and the red copper lower layer, and cleaning;
s5 tempering, namely, putting the cleaned red copper middle layer and the cleaned red copper lower layer into a tempering furnace for tempering at the temperature of 270-290 ℃ for 2-4h, and then cooling the furnace to room temperature.
And S6 shot blasting.
4. The manufacturing process of the 3D shaped waterway mold according to claim 3, wherein a protective atmosphere is introduced in the step S2, and the protective atmosphere is one of methanol, nitrogen or argon.
5. The manufacturing process of the 3D special-shaped waterway mold according to claim 3, wherein the quenching liquid is PAG quenching agent with a concentration of 10%.
6. The manufacturing process of the 3D shaped waterway mold as claimed in claim 3, wherein in the step S4, the cleaning is performed for 10-30min by using a solution in which thiodiglycol and water are miscible in a volume ratio of 1:10, and then the middle layer and the lower layer of the red copper are flushed by using water.
7. The manufacturing process of the 3D special-shaped waterway mold according to claim 3, wherein in the step S5, the middle layer and the lower layer of the red copper are firstly immersed into a benzotriazole solution for 5-7min, the benzotriazole solution is formed by mixing benzotriazole crystals and hot water at 40-50 ℃ according to a mass ratio of 1:520, and then tempering is carried out.
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