Automatic continuous casting and rolling production process for precise copper rods and copper bars

Abstract

The invention relates to an automatic continuous casting and rolling production process for precise copper rods and copper bars, which comprises the following steps of: firstly smelting matrix copper into copper liquid, then adding a modified additive accounting for 5-10% of the total amount of the copper liquid into the copper liquid, continuously smelting for 2-5 minutes to obtain molten copper, pouring the molten copper into a continuous casting machine for casting, and then cooling by adopting an effect adjusting liquid, and the copper body with improved efficiency is obtained. According to the continuous casting and rolling process for the precise copper rod and the copper bar, the matrix copper is smelted into the copper liquid, the modification additive is added for blending and cooperation, casting is conducted in a continuous casting machine, cooling treatment and rolling treatment are conducted, and the elongation, tensile strength and thermal conductivity of the obtained copper rod and copper bar product are improved in a balanced mode; and the copper rod product has remarkable cold and hot impact resistance and wear-resistant stability.

Description

Technical Field

[0001] The invention relates to the technical field of copper rods and copper bars, and in particular to an automated continuous casting and rolling production process for precision copper rods and copper bars. Background Art

[0002] As the market continues to mature, customers' quality requirements for copper rod products are gradually increasing. Due to the increase in the number of copper rod manufacturers, market competition is becoming increasingly fierce. The copper rod continuous casting and rolling production line is a relatively mainstream method for producing copper rods in my country. Its characteristics are that the maintenance process is relatively convenient and the quality of the copper rods produced is relatively stable.

[0003] The existing continuous casting and rolling process for copper rods and bars is relatively simple, and the resulting copper rods and bars have poor elongation and tensile strength. It is difficult to improve the elongation, tensile strength and thermal conductivity of the product in a balanced manner. In addition, the copper rod product has poor resistance to cold and hot shocks and wear resistance, which limits the product's use efficiency. Summary of the invention

[0004] In view of the defects of the prior art, the purpose of the present invention is to provide an automated continuous casting and rolling production process for precision copper rods and copper bars to solve the problems raised in the above background technology.

[0005] The present invention solves the technical problem by adopting the following technical solution: The present invention provides an automated continuous casting and rolling production process for precision copper rods and copper bars, comprising the following steps: Step 1: Prepare copper melt: The base copper is first smelted into copper liquid, and then 5-10% of the total amount of the copper liquid is added to the copper liquid, and the smelting is continued for 2-5 minutes to obtain a copper melt; Step 2: pouring the molten copper into a continuous casting machine for casting, and then cooling it with an effect-adjusting liquid to obtain an effect-adjusted copper body; Step 3: The improved copper body is rolled to obtain a copper rod, which is then cleaned and cooled, and the water pressure of the cleaning is 2MPa; Step 4: Finally, the precision copper rods and bars are obtained after flaw detection, wax coating, rod winding and packaging. Preferably, the preparation method of the modified additive is: S01: adding a sodium alginate solution of 5-10% of the total amount of dolomite and a phosphate buffer solution of 2-5% of the total amount of dolomite to the dolomite, and then ball milling in a ball mill for 1-2 hours at a ball milling speed of 1000 r / min, and then completing the ball milling to obtain a dolomite liquid; S02: Add 5-10% dolomite liquid and 2-5% nano agent to a 10-15% magnesium chloride solution, stir thoroughly, filter and dry to obtain a magnesium chloride modifier; S03: Rare earth cerium powder is first added to a 5% sodium citrate solution with a mass fraction of 3-5 times the total amount of rare earth cerium powder, and then a magnesium chloride modifier with a mass fraction of 10-15% of the total amount of rare earth cerium powder and sodium dodecylbenzene sulfonate with a mass fraction of 2-5% of the total amount of rare earth cerium powder are added. The mixture is stirred thoroughly, filtered and dried to obtain a modified additive.

[0006] Preferably, the mass fraction of the sodium alginate solution is 2-5%; and the pH value of the phosphate buffer solution is 5.5-6.0.

[0007] Preferably, the preparation method of the nano agent is: Nano lanthanum oxide and nano aluminum oxide are mixed in a weight ratio of 3:2, and then hot calcined at 215-220°C for 20 minutes. After the calcination is completed, cool to room temperature to obtain a calcined material, and then add the calcined material to a 5% sodium silicate solution with a mass fraction of 2-4 times the total amount of the calcined material, and then add yttrium nitrate solution with a mass fraction of 2-5% of the total amount of the calcined material. The ball milling is sufficient, and after the ball milling is completed, the nano agent is filtered and dried to obtain.

[0008] Preferably, the ball milling is performed at a speed of 1000-1500 r / min for 2 h.

[0009] Preferably, the mass fraction of the yttrium nitrate solution is 3-5%.

[0010] Preferably, the specific operation steps of the cooling treatment of the effect adjustment liquid are: S11: Preparation of effect adjustment solution: S101: adding 2-5 parts of a silane coupling agent and 1-3 parts of stearic acid to 5-8 parts of a sodium lignin sulfonate solution, and then adding 2-4 parts of an ethanol solvent and stirring to obtain a base agent; S102: adding 5-8 parts of carbon nanotubes and 2-4 parts of nano titanium dioxide to 6-10 parts of dopamine hydrochloride solution, and then adding 1-3 nano silica sol to blend and stir, and stirring is completed to obtain a regulating solution; S103: irradiating the hydroxyapatite in a proton irradiation box for 10-15 minutes at an irradiation power of 300-350W, and then ending the irradiation; The irradiated hydroxyapatite and the regulating solution were mixed in a weight ratio of 5:3, and the mixture was ball-milled at a speed of 1000 r / min for 2 h. After the ball-milling was completed, the mixture was washed with water, filtered, and dried to obtain a regulated hydroxyapatite agent; The adjusted hydroxyapatite agent and the base agent are stirred in a weight ratio of 2:5 to obtain an effective adjustment solution; S12: spraying the effect adjustment liquid onto the copper surface cast by the continuous casting machine until the copper surface is completely soaked and the copper is cooled to room temperature.

[0011] Preferably, the silane coupling agent is silane coupling agent KH560; and the mass fraction of the sodium lignin sulfonate solution is 4-6%.

[0012] Preferably, the mass fraction of the dopamine hydrochloride solution is 3-5%; the rotation speed of the blending and stirring treatment in S102 is 450-550 r / min, and the stirring is 20-30 min.

[0013] Preferably, the rolling process has an entry temperature of 840°C and an exit temperature of 460°C.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In the continuous casting and rolling process of the precision copper rod and copper bar of the present invention, base copper is smelted into copper liquid, and a modifying additive is added for blending and coordination, and then cast in a continuous casting machine, and the modified liquid is cooled and rolled to improve the balance of elongation, tensile strength and thermal conductivity of the obtained copper rod and copper bar products, and the copper rod products have remarkable effects on cold and hot shock resistance and wear resistance stability; the modifying additive adopts dolomite, which is blended and ball-milled with a sodium alginate solution and a phosphate buffer solution to optimize the dispersion and activity efficiency of the dolomite, and then the magnesium chloride solution, dolomite liquid and a nano agent are coordinated to obtain a magnesium chloride modifier, the nano agent adopts nano lanthanum oxide and nano aluminum oxide, which are hot calcined at 215-220°C for 20 minutes, and then blended and coordinated with a sodium silicate solution and an yttrium nitrate solution, and the magnesium chloride solution and the dolomite liquid are reinforced by blending between the nano raw materials, and then blended with rare earth cerium powder and citric acid The modified additive is obtained by blending and coordinating sodium solution and sodium dodecylbenzene sulfonate. The raw materials in the modified additive are mutually blended and synergistic, and the modified additive is obtained by a specific process, so that the performance of the product is further improved. The cooling treatment of the effective adjustment liquid adopts irradiation of hydroxyapatite in a proton irradiation box to optimize the activity efficiency of hydroxyapatite, and then the adjusting liquid is obtained by blending and stirring carbon nanotubes, nano titanium dioxide, dopamine hydrochloride solution and nano silica sol. The hydroxyapatite is improved by adjusting the adjusting liquid, and then the matrix agent composed of raw materials such as silane coupling agent, stearic acid and sodium lignin sulfonate solution is combined. The dot-shaped hydroxyapatite is combined with carbon nanotubes with a high specific surface area, and nano titanium dioxide is coordinated at the same time. The effective adjustment liquid obtained is used to homogenize the cooling product in the cooling process, so that the tissue particles can be better strengthened and the structural density can be enhanced, so as to further improve the performance of the product. DETAILED DESCRIPTION

[0015] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] An automated continuous casting and rolling production process for precision copper rods and bars of this embodiment includes the following steps: Step 1: Prepare copper melt: The base copper is first smelted into copper liquid, and then 5-10% of the total amount of the copper liquid is added to the copper liquid, and the smelting is continued for 2-5 minutes to obtain a copper melt; Step 2: pouring the molten copper into a continuous casting machine for casting, and then cooling it with an effect-adjusting liquid to obtain an effect-adjusted copper body; Step 3: The improved copper body is rolled to obtain a copper rod, which is then cleaned and cooled, and the water pressure of the cleaning is 2MPa; Step 4: Finally, after flaw detection, wax coating, winding and packaging, a precision copper rod and copper bar is obtained. The preparation method of the modified additive in this embodiment is: S01: adding a sodium alginate solution of 5-10% of the total amount of dolomite and a phosphate buffer solution of 2-5% of the total amount of dolomite to the dolomite, and then ball milling in a ball mill for 1-2 hours at a ball milling speed of 1000 r / min, and then completing the ball milling to obtain a dolomite liquid; S02: Add 5-10% dolomite liquid and 2-5% nano agent to a 10-15% magnesium chloride solution, stir thoroughly, filter and dry to obtain a magnesium chloride modifier; S03: Rare earth cerium powder is first added to a 5% sodium citrate solution with a mass fraction of 3-5 times the total amount of rare earth cerium powder, and then a magnesium chloride modifier with a mass fraction of 10-15% of the total amount of rare earth cerium powder and sodium dodecylbenzene sulfonate with a mass fraction of 2-5% of the total amount of rare earth cerium powder are added. The mixture is stirred thoroughly, filtered and dried to obtain a modified additive.

[0017] The mass fraction of the sodium alginate solution in this embodiment is 2-5%; the pH value of the phosphate buffer solution is 5.5-6.0.

[0018] The preparation method of the nanoparticles of this embodiment is as follows: Nano lanthanum oxide and nano aluminum oxide are mixed in a weight ratio of 3:2, and then hot calcined at 215-220°C for 20 minutes. After the calcination is completed, cool to room temperature to obtain a calcined material, and then add the calcined material to a 5% sodium silicate solution with a mass fraction of 2-4 times the total amount of the calcined material, and then add yttrium nitrate solution with a mass fraction of 2-5% of the total amount of the calcined material. The ball milling is sufficient, and after the ball milling is completed, the nano agent is filtered and dried to obtain.

[0019] The ball milling speed of the present embodiment is 1000-1500 r / min, and the ball milling is performed for 2 h.

[0020] The mass fraction of the yttrium nitrate solution in this embodiment is 3-5%.

[0021] The specific operation steps of the cooling treatment of the effect adjustment liquid in this embodiment are: S11: Preparation of effect adjustment solution: S101: adding 2-5 parts of a silane coupling agent and 1-3 parts of stearic acid to 5-8 parts of a sodium lignin sulfonate solution, and then adding 2-4 parts of an ethanol solvent and stirring to obtain a base agent; S102: adding 5-8 parts of carbon nanotubes and 2-4 parts of nano titanium dioxide to 6-10 parts of dopamine hydrochloride solution, and then adding 1-3 nano silica sol to blend and stir, and stirring is completed to obtain a regulating solution; S103: irradiating the hydroxyapatite in a proton irradiation box for 10-15 minutes at an irradiation power of 300-350W, and then ending the irradiation; The irradiated hydroxyapatite and the regulating solution were mixed in a weight ratio of 5:3, and the mixture was ball-milled at a speed of 1000 r / min for 2 h. After the ball-milling was completed, the mixture was washed with water, filtered, and dried to obtain a regulated hydroxyapatite agent; The adjusted hydroxyapatite agent and the base agent are stirred in a weight ratio of 2:5 to obtain an effective adjustment solution; S12: spraying the effect adjustment liquid onto the copper surface cast by the continuous casting machine until the copper surface is completely soaked and the copper is cooled to room temperature.

[0022] The silane coupling agent in this embodiment is silane coupling agent KH560; the mass fraction of the sodium lignin sulfonate solution is 4-6%.

[0023] The mass fraction of the dopamine hydrochloride solution in this embodiment is 3-5%; the rotation speed of the blending and stirring treatment in S102 is 450-550r / min, and the stirring is 20-30min.

[0024] The rolling temperature in the rolling process of this embodiment is 840°C, and the outlet temperature is 460°C.

[0025] Example 1. An automated continuous casting and rolling production process for precision copper rods and bars of this embodiment includes the following steps: Step 1: Prepare copper melt: The base copper is first smelted into copper liquid, and then 5-10% of the total amount of the copper liquid is added to the copper liquid, and the smelting is continued for 2 minutes to obtain a copper melt; Step 2: pouring the molten copper into a continuous casting machine for casting, and then cooling it with an effect-adjusting liquid to obtain an effect-adjusted copper body; Step 3: The improved copper body is rolled to obtain a copper rod, which is then cleaned and cooled, and the water pressure of the cleaning is 2MPa; Step 4: Finally, after flaw detection, wax coating, winding and packaging, a precision copper rod and copper bar is obtained. The preparation method of the modified additive in this embodiment is: S01: adding 5% sodium alginate solution and 2% phosphate buffer solution to the dolomite, and then ball milling for 1 hour in a ball mill at a speed of 1000 r / min, and then completing the ball milling to obtain dolomite liquid; S02: Add 5% dolomite liquid and 2% nano agent to the total amount of the magnesium chloride solution into a 10% magnesium chloride solution, stir thoroughly, filter and dry to obtain a magnesium chloride modifier; S03: Rare earth cerium powder is first added to a 5% sodium citrate solution with a mass fraction of 3 times the total amount of rare earth cerium powder, and then a magnesium chloride modifier with a mass fraction of 10% of the total amount of rare earth cerium powder and sodium dodecylbenzene sulfonate with a mass fraction of 2% of the total amount of rare earth cerium powder are added. The mixture is stirred thoroughly, filtered and dried to obtain a modified additive.

[0026] The mass fraction of the sodium alginate solution in this embodiment is 2%; the pH value of the phosphate buffer solution is 5.5.

[0027] The preparation method of the nanoparticles of this embodiment is as follows: Nano lanthanum oxide and nano aluminum oxide are mixed in a weight ratio of 3:2, and then hot calcined at 215°C for 20 minutes. After the calcination is completed, cool to room temperature to obtain a calcined material, and then add the calcined material to a 5% sodium silicate solution with a mass fraction that is twice the total amount of the calcined material, and then add yttrium nitrate solution with a mass fraction of 2% of the total amount of the calcined material. The mixture is ball-milled thoroughly, filtered and dried after the ball-milling is completed to obtain a nano agent.

[0028] The ball milling speed of this embodiment is 1000r / min, and the ball milling is 2h.

[0029] The mass fraction of the yttrium nitrate solution in this embodiment is 3%.

[0030] The specific operation steps of the cooling treatment of the effect adjustment liquid in this embodiment are: S11: Preparation of effect adjustment solution: S101: adding 2 parts of silane coupling agent and 1 part of stearic acid to 5 parts of sodium lignin sulfonate solution, and then adding 2 parts of ethanol solvent and stirring to obtain a base agent; S102: adding 5 parts of carbon nanotubes and 2 parts of nano titanium dioxide to 6 parts of dopamine hydrochloride solution, and then adding 1 nano silica sol to blend and stir, and stirring is completed to obtain a regulating solution; S103: irradiating the hydroxyapatite in a proton irradiation box for 10 minutes at an irradiation power of 300 W, and then the irradiation ends; The irradiated hydroxyapatite and the regulating solution were mixed in a weight ratio of 5:3, and the mixture was ball-milled at a speed of 1000 r / min for 2 h. After the ball-milling was completed, the mixture was washed with water, filtered, and dried to obtain a regulated hydroxyapatite agent; The adjusted hydroxyapatite agent and the base agent are stirred in a weight ratio of 2:5 to obtain an effective adjustment solution; S12: spraying the effect adjustment liquid onto the copper surface cast by the continuous casting machine until the copper surface is completely soaked and the copper is cooled to room temperature.

[0031] The silane coupling agent in this embodiment is silane coupling agent KH560; the mass fraction of the sodium lignin sulfonate solution is 4%.

[0032] The mass fraction of the dopamine hydrochloride solution in this embodiment is 3%; the rotation speed of the blending and stirring treatment in S102 is 450 r / min, and the stirring is performed for 20 minutes.

[0033] The rolling temperature in the rolling process of this embodiment is 840°C, and the outlet temperature is 460°C.

[0034] Example 2. An automated continuous casting and rolling production process for precision copper rods and bars of this embodiment includes the following steps: Step 1: Prepare copper melt: The base copper is first smelted into copper liquid, and then 5-10% of the total amount of the copper liquid is added to the copper liquid. The smelting is continued for 5 minutes to obtain a copper melt; Step 2: pouring the molten copper into a continuous casting machine for casting, and then cooling it with an effect-adjusting liquid to obtain an effect-adjusted copper body; Step 3: The improved copper body is rolled to obtain a copper rod, which is then cleaned and cooled, and the water pressure of the cleaning is 2MPa; Step 4: Finally, after flaw detection, wax coating, winding and packaging, a precision copper rod and copper bar is obtained. The preparation method of the modified additive in this embodiment is: S01: adding sodium alginate solution with a content of 10% of the total amount of dolomite and phosphate buffer solution with a content of 5% of the total amount of dolomite to the dolomite, and then ball milling the mixture in a ball mill for 2 hours at a ball milling speed of 1000 r / min, and then obtaining dolomite liquid after the ball milling is completed; S02: Add 10% of the total amount of the magnesium chloride solution of dolomite liquid and 2-5% of the total amount of the magnesium chloride solution of nano agent to a magnesium chloride solution with a mass fraction of 10-15%, stir well, filter and dry to obtain a magnesium chloride modifier; S03: Rare earth cerium powder is first added to a 5% sodium citrate solution with a mass fraction of 5 times the total amount of rare earth cerium powder, and then a magnesium chloride modifier with a mass fraction of 15% of the total amount of rare earth cerium powder and sodium dodecylbenzene sulfonate with a mass fraction of 5% of the total amount of rare earth cerium powder are added. The mixture is stirred thoroughly, filtered and dried to obtain a modified additive.

[0035] The mass fraction of the sodium alginate solution in this embodiment is 5%; the pH value of the phosphate buffer solution is 6.0.

[0036] The preparation method of the nanoparticles of this embodiment is as follows: Nano lanthanum oxide and nano aluminum oxide are mixed in a weight ratio of 3:2, and then hot calcined at 220°C for 20 minutes. After the calcination is completed, cool to room temperature to obtain a calcined material, and then add the calcined material to a 5% sodium silicate solution with a mass fraction of 4 times the total amount of the calcined material, and then add yttrium nitrate solution with a mass fraction of 5% of the total amount of the calcined material. The mixture is ball-milled thoroughly, filtered and dried after the ball-milling is completed to obtain a nano agent.

[0037] The ball milling speed of this embodiment is 1500r / min, and the ball milling is 2h.

[0038] The mass fraction of the yttrium nitrate solution in this embodiment is 5%.

[0039] The specific operation steps of the cooling treatment of the effect adjustment liquid in this embodiment are: S11: Preparation of effect adjustment solution: S101: adding 5 parts of silane coupling agent and 3 parts of stearic acid to 8 parts of sodium lignin sulfonate solution, and then adding 4 parts of ethanol solvent and stirring to obtain a base agent; S102: adding 8 parts of carbon nanotubes and 4 parts of nano titanium dioxide to 10 parts of dopamine hydrochloride solution, and then adding 3 nano silica sol to blend and stir, and stirring is completed to obtain a regulating solution; S103: irradiating the hydroxyapatite in a proton irradiation box for 15 minutes at an irradiation power of 350 W, and then the irradiation ends; The irradiated hydroxyapatite and the regulating solution were mixed in a weight ratio of 5:3, and the mixture was ball-milled at a speed of 1000 r / min for 2 h. After the ball-milling was completed, the mixture was washed with water, filtered, and dried to obtain a regulated hydroxyapatite agent; The adjusted hydroxyapatite agent and the base agent are stirred in a weight ratio of 2:5 to obtain an effective adjustment solution; S12: spraying the effect adjustment liquid onto the copper surface cast by the continuous casting machine until the copper surface is completely soaked and the copper is cooled to room temperature.

[0040] The silane coupling agent in this embodiment is silane coupling agent KH560; the mass fraction of the sodium lignin sulfonate solution is 6%.

[0041] The mass fraction of the dopamine hydrochloride solution in this embodiment is 5%; the rotation speed of the blending and stirring treatment in S102 is 550 r / min, and the stirring is performed for 30 minutes.

[0042] The rolling temperature in the rolling process of this embodiment is 840°C, and the outlet temperature is 460°C.

[0043] Example 3. An automated continuous casting and rolling production process for precision copper rods and bars of this embodiment includes the following steps: Step 1: Prepare copper melt: The base copper is first smelted into copper liquid, and then a modification additive of 7.5% of the total amount of the copper liquid is added to the copper liquid, and the smelting is continued for 3.5 minutes to obtain a copper melt; Step 2: pouring the molten copper into a continuous casting machine for casting, and then cooling it with an effect-adjusting liquid to obtain an effect-adjusted copper body; Step 3: The improved copper body is rolled to obtain a copper rod, which is then cleaned and cooled, and the water pressure of the cleaning is 2MPa; Step 4: Finally, after flaw detection, wax coating, winding and packaging, a precision copper rod and copper bar is obtained. The preparation method of the modified additive in this embodiment is: S01: adding a sodium alginate solution with a content of 7.5% of the total amount of dolomite and a phosphate buffer solution with a content of 3.5% of the total amount of dolomite to the dolomite, and then ball milling the mixture in a ball mill for 1.5 hours at a ball milling speed of 1000 r / min, and then obtaining a dolomite liquid after the ball milling is completed; S02: Add 7.5% dolomite liquid and 3.5% nano agent to the magnesium chloride solution with a mass fraction of 12.5%, stir well, filter and dry to obtain a magnesium chloride modifier; S03: Rare earth cerium powder is first added to a 5% sodium citrate solution with a mass fraction of 4 times the total amount of rare earth cerium powder, and then a magnesium chloride modifier with a mass fraction of 12.5% ​​of the total amount of rare earth cerium powder and sodium dodecylbenzene sulfonate with a mass fraction of 3.5% of the total amount of rare earth cerium powder are added. The mixture is stirred thoroughly, filtered and dried to obtain a modified additive.

[0044] The mass fraction of the sodium alginate solution in this embodiment is 3.5%; the pH value of the phosphate buffer solution is 5.8.

[0045] The preparation method of the nanoparticles of this embodiment is as follows: Nano lanthanum oxide and nano aluminum oxide are mixed in a weight ratio of 3:2, and then hot calcined at 218°C for 20 minutes. After the calcination is completed, cool to room temperature to obtain a calcined material, and then add the calcined material to a 5% sodium silicate solution with a mass fraction of 3 times the total amount of the calcined material, and then add yttrium nitrate solution with a mass fraction of 3.5% of the total amount of the calcined material. Ball milling is sufficient, and after the ball milling is completed, it is filtered and dried to obtain a nano agent.

[0046] The ball milling in this embodiment is performed at a full ball milling speed of 1250 r / min for 2 h.

[0047] The mass fraction of the yttrium nitrate solution in this embodiment is 4%.

[0048] The specific operation steps of the cooling treatment of the effect adjustment liquid in this embodiment are: S11: Preparation of effect adjustment solution: S101: adding 3.5 parts of silane coupling agent and 2 parts of stearic acid to 6.5 parts of sodium lignin sulfonate solution, and then adding 3 parts of ethanol solvent and stirring to obtain a base agent; S102: adding 6.5 parts of carbon nanotubes and 3 parts of nano titanium dioxide to 8 parts of dopamine hydrochloride solution, and then adding 2 nano silica sol to blend and stir, and stirring is completed to obtain a regulating solution; S103: irradiating the hydroxyapatite in a proton irradiation box for 12.5 minutes at an irradiation power of 320 W, and then the irradiation ends; The irradiated hydroxyapatite and the regulating solution were mixed in a weight ratio of 5:3, and the mixture was ball-milled at a speed of 1000 r / min for 2 h. After the ball-milling was completed, the mixture was washed with water, filtered, and dried to obtain a regulated hydroxyapatite agent; The adjusted hydroxyapatite agent and the base agent are stirred in a weight ratio of 2:5 to obtain an effective adjustment solution; S12: spraying the effect adjustment liquid onto the copper surface cast by the continuous casting machine until the copper surface is completely soaked and the copper is cooled to room temperature.

[0049] The silane coupling agent in this embodiment is silane coupling agent KH560; the mass fraction of the sodium lignin sulfonate solution is 5%.

[0050] The mass fraction of the dopamine hydrochloride solution in this embodiment is 4%; the rotation speed of the blending and stirring treatment in S102 is 470 r / min, and the stirring is performed for 25 minutes.

[0051] The rolling temperature in the rolling process of this embodiment is 840°C, and the outlet temperature is 460°C.

[0052] Comparative Example 1. The difference from Example 3 is that no modifying additive is added.

[0053] Comparative Example 2. The difference from Example 3 is that no magnesium chloride modifier is added in the preparation of the modifying additive.

[0054] Comparative Example 3. The difference from Example 3 is that no dolomite liquid is added in the preparation of the magnesium chloride modifier.

[0055] Comparative Example 4. The difference from Example 3 is that no nano agent is added in the preparation of the magnesium chloride modifier.

[0056] Comparative Example 5. The difference from Example 3 is that no magnesium chloride solution is added in the preparation of the magnesium chloride modifier.

[0057] Comparative Example 6. The difference from Example 3 is that sodium silicate solution and nano-lanthanum oxide treatment were not used in the preparation of the nano-agent.

[0058] Comparative Example 7. The difference from Example 3 is that nano-alumina and yttrium nitrate solution are not used in the preparation of the nano-agent.

[0059] Comparative Example 8. The difference from Example 3 is that no rare earth cerium powder is added in the preparation of the modified additive.

[0060] Comparative Example 9. The difference from Example 3 is that no cooling treatment with the conditioning liquid is adopted.

[0061] Comparative Example 10. The difference from Example 3 is that no regulating hydroxyapatite agent is added to the effect regulating solution.

[0062] Comparative Example 11. The difference from Example 3 is that no irradiated hydroxyapatite is added to the adjusted hydroxyapatite agent.

[0063] Comparative Example 12. The difference from Example 3 is that the conditioned hydroxyapatite agent is not treated with a conditioning liquid.

[0064] Comparative Example 13. The difference from Example 3 is that no carbon nanotubes and nano-silica sol are added to the regulating solution.

[0065] Comparative Example 14. The difference from Example 3 is that nano titanium dioxide is not added to the regulating solution and the dopamine hydrochloride solution is replaced by water.

[0066] Conventional test, testing the elongation, tensile strength and thermal conductivity of Examples 1 to 3 and Comparative Examples 1 to 14, and subjecting the copper rod product to an impact force of 10 J / cm2 at 65°C for 1 hour, then to an impact force of 10 J / cm2 at -5°C for 1 hour, and finally to a wear test at 200 r / min, a load of 100 N, and a time of 60 min to test the product's resistance to cold and heat shock and wear stability;

[0067] It can be seen from Comparative Examples 1 to 14 and Examples 1 to 3 that; The product of Example 3 has excellent elongation, tensile strength and thermal conductivity, and the three properties can be improved in a coordinated manner. At the same time, the product has excellent stability in cold and hot shock and wear-resistant environments; It can be seen from Comparative Example 1, Comparative Example 9 and Example 3 that the product does not add a modifying additive and does not use a cooling treatment with an effect-adjusting liquid, and the product performance coordination tends to deteriorate, and the product's performance stability under cold and hot shock resistance and wear resistance conditions deteriorates significantly. The two are used in coordination and synergy, and the product performance effect is significant; It can be seen from Comparative Examples 1 to 5 and Example 3 that the performance of the products tends to deteriorate when no magnesium chloride modifier is added in the preparation of the modified additive, no dolomite liquid is added in the preparation of the magnesium chloride modifier, no nano agent is added in the preparation of the magnesium chloride modifier, and no magnesium chloride solution is added in the preparation of the magnesium chloride modifier; From Comparative Examples 6 to 8 and Example 3, it can be seen that the sodium silicate solution and nano-lanthanum oxide treatment were not used in the preparation of the nano-agent, nano-aluminum oxide and yttrium nitrate solution were not used in the preparation of the nano-agent, and rare earth cerium powder was not added in the preparation of the modified additive. The performance of the product has a trend of varying degrees of deterioration. The nano-agent obtained by the specific method of the present invention is combined with magnesium chloride solution, magnesium chloride modifier prepared by dolomite liquid, and the modified additive obtained by a specific process. The product performance effect is the most significant, and the use of other methods instead is not as obvious as the present invention; It can be seen from Comparative Examples 10 to 14 and Example 3 that the performance of the products all tended to deteriorate to varying degrees when no adjusted hydroxyapatite agent was added to the effective adjusting liquid, no irradiated hydroxyapatite was added to the adjusted hydroxyapatite agent, the adjusted hydroxyapatite agent was not treated with adjusting liquid, carbon nanotubes and nano-silica sol were not added to the adjusting liquid, nano-titanium dioxide was not added to the adjusting liquid, and dopamine hydrochloride solution was replaced by water. The performance of the products was most significant when the adjusting liquid obtained by the specific method of the present invention and the hydroxyapatite obtained by the specific method were combined with the hydroxyapatite of the present invention.

[0068] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0069] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An automated continuous casting and rolling production process for precision copper rods and bars, characterized in that: The following steps are involved: Step 1: Prepare copper melt: The base copper is first smelted into copper liquid, and then 5-10% of the total amount of the copper liquid is added to the copper liquid, and the smelting is continued for 2-5 minutes to obtain a copper melt; Step 2: pouring the molten copper into a continuous casting machine for casting, and then cooling it with an effect-adjusting liquid to obtain an effect-adjusted copper body; Step 3: The improved copper body is rolled to obtain a copper rod, which is then cleaned and cooled, and the water pressure of the cleaning is 2MPa; Step 4: Finally, after flaw detection, wax coating, rod winding and packaging, precision copper rods and bars are obtained.

2. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 1 is characterized in that: The preparation method of the modified additive is: S01: adding a sodium alginate solution of 5-10% of the total amount of dolomite and a phosphate buffer solution of 2-5% of the total amount of dolomite to the dolomite, and then ball milling in a ball mill for 1-2 hours at a ball milling speed of 1000 r / min, and then completing the ball milling to obtain a dolomite liquid; S02: Add 5-10% dolomite liquid and 2-5% nano agent to a 10-15% magnesium chloride solution, stir thoroughly, filter and dry to obtain a magnesium chloride modifier; S03: Rare earth cerium powder is first added to a 5% sodium citrate solution with a mass fraction of 3-5 times the total amount of rare earth cerium powder, and then a magnesium chloride modifier with a mass fraction of 10-15% of the total amount of rare earth cerium powder and sodium dodecylbenzene sulfonate with a mass fraction of 2-5% of the total amount of rare earth cerium powder are added. The mixture is stirred thoroughly, filtered and dried to obtain a modified additive.

3. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 2 is characterized in that: The mass fraction of the sodium alginate solution is 2-5%; the pH value of the phosphate buffer solution is 5.5-6.

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4. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 2 is characterized in that: The preparation method of the nano agent is: Nano lanthanum oxide and nano aluminum oxide are mixed in a weight ratio of 3:2, and then hot calcined at 215-220°C for 20 minutes. After the calcination is completed, cool to room temperature to obtain a calcined material, and then add the calcined material to a 5% sodium silicate solution with a mass fraction of 2-4 times the total amount of the calcined material, and then add yttrium nitrate solution with a mass fraction of 2-5% of the total amount of the calcined material. The ball milling is sufficient, and after the ball milling is completed, the nano agent is filtered and dried to obtain.

5. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 4 is characterized in that: The ball milling is performed at a speed of 1000-1500 r / min for 2 hours.

6. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 4 is characterized in that: The mass fraction of the yttrium nitrate solution is 3-5%.

7. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 1 is characterized in that: The specific operation steps of the cooling treatment of the effect adjustment liquid are as follows: S11: Preparation of effect adjustment solution: S101: adding 2-5 parts of a silane coupling agent and 1-3 parts of stearic acid to 5-8 parts of a sodium lignin sulfonate solution, and then adding 2-4 parts of an ethanol solvent and stirring to obtain a base agent; S102: adding 5-8 parts of carbon nanotubes and 2-4 parts of nano titanium dioxide to 6-10 parts of dopamine hydrochloride solution, and then adding 1-3 nano silica sol to blend and stir, and stirring is completed to obtain a regulating solution; S103: irradiating the hydroxyapatite in a proton irradiation box for 10-15 minutes at an irradiation power of 300-350W, and then the irradiation ends; The irradiated hydroxyapatite and the regulating solution were mixed in a weight ratio of 5:3, and the mixture was ball-milled at a speed of 1000 r / min for 2 h. After the ball-milling was completed, the mixture was washed with water, filtered, and dried to obtain a regulated hydroxyapatite agent; The adjusted hydroxyapatite agent and the base agent are stirred in a weight ratio of 2:5 to obtain an effective adjustment solution; S12: spraying the effect adjustment liquid onto the copper surface cast by the continuous casting machine until the copper surface is completely soaked and the copper is cooled to room temperature.

8. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 7, characterized in that: The silane coupling agent is silane coupling agent KH560; the mass fraction of the sodium lignin sulfonate solution is 4-6%.

9. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 7, characterized in that: The mass fraction of the dopamine hydrochloride solution is 3-5%; the rotation speed of the blending and stirring treatment in S102 is 450-550r / min, and the stirring is performed for 20-30min.

10. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 1, characterized in that: The rolling temperature was 840°C and the outlet temperature was 460°C.

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