A precise copper rod and copper bar automatic continuous casting and rolling production process

Abstract

The application discloses a kind of precise copper rod copper bar automation continuous casting and rolling production process, comprising the following steps: first melt into copper liquid by base copper, then 5-10% of total amount of copper liquid of modified additive is added to copper liquid, continue to melt 2-5min, obtain copper melt, copper melt is poured into continuous casting machine and cast, then adopt effective liquid cooling treatment, obtain the copper body of effective improvement.This application adopts base copper to melt into copper liquid in the process of precise copper rod copper bar continuous casting and rolling, and the balance of elongation, tensile strength and thermal conductivity of the obtained copper rod copper bar product is improved by adding modified additive to adjust and match, and the effects of cold and hot impact resistance and wear resistance stability of copper rod product are remarkable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of copper rod and copper bar, in particular to a precision copper rod and copper bar automatic continuous casting and rolling production process. BACKGROUND

[0002] With the continuous maturation of the market, the quality requirements of customers for copper rod products are gradually increasing. Due to the increase in the number of copper rod manufacturers, the market competition is becoming more and more fierce. The copper rod continuous casting and rolling production line is a relatively mainstream method for producing copper rods in China. Its characteristics are that the maintenance process is relatively convenient, and the quality stability of the produced copper rod is good.

[0003] The existing copper rod and copper bar continuous casting and rolling process is relatively simple, and the elongation and tensile strength of the obtained copper rod and copper bar are poor. It is difficult to balance and improve the elongation, tensile strength and thermal conductivity of the product, and the cold and hot impact resistance and wear resistance stability of the copper rod product are poor, which limits the use efficiency of the product. SUMMARY

[0004] In view of the defects of the prior art, the purpose of the present application is to provide a precision copper rod and copper bar automatic continuous casting and rolling production process to solve the problems raised in the background art.

[0005] The technical problem solved by the present application adopts the following technical scheme:

[0006] The present application provides a precision copper rod and copper bar automatic continuous casting and rolling production process, comprising the following steps:

[0007] Step 1: prepare copper melt:

[0008] The base copper is first melted into copper liquid, then 5-10% of the total amount of copper liquid is added to the copper liquid, and the melting is continued for 2-5 min to obtain the copper melt;

[0009] Step 2: cast the copper melt into the continuous casting machine, and then adopt the liquid cooling treatment to obtain the improved copper body;

[0010] Step 3: the improved copper body is further subjected to rolling treatment to obtain a copper rod body, and then subjected to cleaning and cooling, and the outlet water pressure of the cleaning is 2 MPa;

[0011] Step 4: finally, after flaw detection, wax coating, rod winding and packaging, the precision copper rod and copper bar are prepared. Preferably, the preparation method of the modified additive is:

[0012] S01: add 5-10% of the total amount of sodium alginate solution and 2-5% of the total amount of phosphoric acid buffer solution to the dolomite, then ball mill in a ball mill for 1-2 h at a ball mill speed of 1000 r / min, and after the ball mill is finished, the dolomite liquid is obtained;

[0013] S02: adding dolomite solution of 5-10% of total amount of magnesium chloride solution and magnesium chloride solution of 2-5% of total amount of magnesium chloride solution into magnesium chloride solution of 10-15% of mass fraction, stirring fully, filtering and drying to obtain magnesium chloride modifier;

[0014] S03: adding sodium citrate solution of 5% of mass fraction of 3-5 times of total amount of rare earth cerium powder into rare earth cerium powder, then adding magnesium chloride modifier of 10-15% of total amount of rare earth cerium powder and sodium dodecyl benzene sulfonate of 2-5% of total amount of rare earth cerium powder into rare earth cerium powder, stirring fully, filtering and drying to obtain modified additive.

[0015] 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.

[0016] Preferably, the preparation method of the nanometer agent is as follows:

[0017] Mixing nanometer lanthanum oxide and nanometer aluminum oxide according to weight ratio of 3:2, then heat calcining at 215-220℃ for 20min, cooling to room temperature after calcining, obtaining calcined material, then adding the calcined material into sodium silicate solution of 5% of mass fraction of 2-4 times of total amount of the calcined material, then adding yttrium nitrate solution of 2-5% of total amount of the calcined material, ball milling fully, filtering and drying to obtain nanometer agent.

[0018] Preferably, the ball milling speed of the ball milling fully is 1000-1500r / min, and the ball milling time is 2h.

[0019] Preferably, the mass fraction of the yttrium nitrate solution is 3-5%.

[0020] Preferably, the specific operation steps of the cooling treatment of the effector adjusting liquid are as follows:

[0021] S11: preparation of the effector adjusting liquid:

[0022] S101: adding 2-5 parts of silane coupling agent, 1-3 parts of stearic acid into 5-8 parts of sodium lignosulfonate solution, then adding 2-4 parts of ethanol solvent, stirring fully to obtain base agent;

[0023] S102: adding 5-8 parts of carbon nanotube and 2-4 parts of nanometer titanium dioxide into 6-10 parts of dopamine hydrochloride solution, then adding 1-3 parts of nanometer silicon sol, stirring and mixing, obtaining adjusting liquid;

[0024] S103: irradiating hydroxyapatite in proton irradiation box for 10-15min, irradiation power is 300-350W, and irradiation is ended;

[0025] The irradiated hydroxyapatite and the adjusting liquid are mixed according to a weight ratio of 5:3, ball-milled at a rotating speed of 1000 r / min for 2 h, washed with water, filtered and dried to obtain the adjusted hydroxyapatite agent;

[0026] The adjusted hydroxyapatite agent and the base agent are fully stirred according to a weight ratio of 2:5 to obtain an effective adjusting liquid.

[0027] S12: The effective adjusting liquid is sprayed on the copper surface cast by the continuous casting machine until the copper surface is fully infiltrated and the copper is cooled to room temperature.

[0028] Preferably, the silane coupling agent is silane coupling agent KH560; and the mass fraction of the sodium lignosulfonate solution is 4-6%.

[0029] Preferably, the mass fraction of the dopamine hydrochloride solution is 3-5%; and the rotating speed of the blending and stirring treatment in S102 is 450-550 r / min, and the stirring time is 20-30 min.

[0030] Preferably, the rolling treatment is performed at an entry temperature of 840 ℃ and an exit temperature of 460 ℃.

[0031] Compared with the prior art, the present application has the following beneficial effects:

[0032] The present application is a precise copper rod and copper bar continuous casting and rolling process, which adopts base copper smelting into copper liquid, and then adding modified additives to mix and coordinate, and then casting in the continuous casting machine, and then adopting efficiency adjusting liquid cooling treatment and rolling treatment, so that the elongation, tensile strength and thermal conductivity of the obtained copper rod and copper bar products are balanced and improved, and the cold and hot impact resistance and wear resistance stability of the copper rod products are significantly improved. The modified additives are prepared by ball milling dolomite in sodium alginate solution and phosphate buffer solution to optimize the dispersity and activity of dolomite, and then adding magnesium chloride solution, dolomite liquid and nano agent to obtain magnesium chloride modifier. The nano agent is prepared by calcining sodium lanthanum oxide and nano aluminum oxide at 215-220℃ for 20min, and then mixing with sodium silicate solution and yttrium nitrate solution to obtain modified additives. The performance of the products is further improved by mixing and coordinating the raw materials in the modified additives and the modified additives prepared by the specific process. The efficiency adjusting liquid cooling treatment adopts proton irradiation of hydroxyapatite in a proton irradiation box to optimize the activity of hydroxyapatite, and then mixing and stirring carbon nanotubes, nano titanium dioxide, dopamine hydrochloride solution and nano silicon sol to obtain adjusting liquid. The performance of the products is further improved by adjusting and improving the hydroxyapatite with the adjusting liquid, and then mixing with silane coupling agent, stearic acid and sodium lignosulfonate solution to obtain the base agent. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0034] The present application is a precise copper rod and copper bar automatic continuous casting and rolling production process, which includes the following steps:

[0035] Step one: preparing copper liquid:

[0036] The base copper is first smelted into copper liquid, and then 5-10% of the total amount of copper liquid is added to the copper liquid, and the smelting is continued for 2-5min to obtain copper liquid;

[0037] Step two: pouring the copper liquid into the continuous casting machine for casting, and then adopting efficiency adjusting liquid cooling treatment to obtain efficiency adjusting improved copper body;

[0038] Step 3: The improved copper body is then rolled to obtain a copper rod, which is then cleaned and cooled. The water pressure of the cleaning is 2 MPa.

[0039] Step 4: Finally, after flaw detection, wax coating, winding and packaging, the precision copper rod and copper bar are obtained. The preparation method of the modifying additive of this embodiment is as follows:

[0040] S01: adding a sodium alginate solution (5-10% of the total amount of dolomite) and a phosphate buffer solution (2-5% of the total amount of dolomite) to the dolomite, and then ball milling the mixture in a ball mill for 1-2 hours at a speed of 1000 r / min to obtain a dolomite liquid;

[0041] S02: adding 5-10% dolomite liquid and 2-5% nano agent to a 10-15% by mass fraction magnesium chloride solution, stirring thoroughly, filtering, and drying to obtain a magnesium chloride modifier;

[0042] 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.

[0043] 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.

[0044] The preparation method of the nanometer agent of this embodiment is:

[0045] Nano-lanthanum oxide and nano-aluminum oxide are mixed in a weight ratio of 3:2, and then calcined at 215-220°C for 20 minutes. After the calcination is completed, the mixture is cooled to room temperature to obtain a calcined material. The calcined material is then added to a 5% sodium silicate solution with a mass fraction of 2-4 times the total amount of the calcined material, and then an yttrium nitrate solution with a mass fraction of 2-5% of the total amount of the calcined material is added. The mixture is ball-milled thoroughly, and after the ball-milling is completed, the mixture is filtered and dried to obtain a nano-agent.

[0046] The ball milling speed of this embodiment is 1000-1500 r / min, and the ball milling is 2h.

[0047] The mass fraction of the yttrium nitrate solution in this embodiment is 3-5%.

[0048] The specific steps of cooling the effect regulating liquid in this embodiment are as follows:

[0049] S11: Preparation of effect adjustment solution:

[0050] S101: 2-5 parts of silane coupling agent, 1-3 parts of stearic acid are added to 5-8 parts of sodium lignosulfonate solution, then 2-4 parts of ethanol solvent are added and stirred to obtain a base agent;

[0051] S102: 5-8 parts of carbon nanotubes, 2-4 parts of nano titanium dioxide are added to 6-10 parts of dopamine hydrochloride solution, then 1-3 parts of nano silicon sol are added and stirred to obtain an adjusting solution;

[0052] S103: The hydroxyapatite is irradiated in a proton irradiation box for 10-15 min, and the irradiation power is 300-350 W;

[0053] The irradiated hydroxyapatite and the adjusting solution are mixed at a weight ratio of 5:3 and ball milled at a speed of 1000 r / min for 2 h. After ball milling, water washing, suction filtration and drying, an adjusted hydroxyapatite agent is obtained;

[0054] The adjusted hydroxyapatite agent and the base agent are stirred at a weight ratio of 2:5 to obtain an adjusting liquid;

[0055] S12: The adjusting liquid is sprayed onto the copper surface cast by the continuous casting machine, and the spraying is performed until the copper surface is completely infiltrated and the copper is cooled to room temperature.

[0056] The silane coupling agent of the embodiment is silane coupling agent KH560; the mass fraction of the sodium lignosulfonate solution is 4-6%.

[0057] The mass fraction of the dopamine hydrochloride solution of the embodiment is 3-5%; the stirring speed of the blending and stirring treatment in S102 is 450-550 r / min, and the stirring time is 20-30 min.

[0058] The entry temperature of the rolling treatment of the embodiment is 840°C, and the exit temperature is 460°C.

[0059] Example 1.

[0060] The precise copper rod and copper bar automatic continuous casting and rolling production process of the embodiment comprises the following steps:

[0061] Step one: preparing copper melt:

[0062] The base copper is first melted into copper liquid, then 5-10% of the total amount of the copper liquid is added to the modified additive, and the melting is continued for 2 min to obtain the copper melt;

[0063] Step two: pouring the copper melt into the continuous casting machine for casting, and then using the adjusting liquid for cooling treatment to obtain an improved copper body;

[0064] Step three: the modified copper body is rolled to obtain a copper rod body, and then the copper rod body is cleaned and cooled, and the water pressure of the cleaning is 2 MPa;

[0065] Step four: finally, the precise copper rod is prepared after flaw detection, waxing, rod winding and packaging.

[0066] S01: 5% of sodium alginate solution and 2% of phosphate buffer solution are added to the dolomite, and then the mixture is ball milled in a ball mill for 1 h at a speed of 1000 r / min, to obtain a dolomite liquid;

[0067] S02: 5% of the dolomite liquid and 2% of the nano agent are added to the magnesium chloride solution with a mass fraction of 10%, and then the mixture is stirred, filtered and dried to obtain a magnesium chloride modifier;

[0068] S03: the rare earth cerium powder is first added to 3 times of the sodium citrate solution with a mass fraction of 5% of the total rare earth cerium powder, and then 10% of the magnesium chloride modifier and 2% of the sodium dodecyl benzene sulfonate are added to the rare earth cerium powder, and then the mixture is stirred, filtered and dried to obtain a modified additive.

[0069] The mass fraction of the sodium alginate solution in the embodiment is 2%, and the pH value of the phosphate buffer solution is 5.5.

[0070] The preparation method of the nano agent in the embodiment is as follows:

[0071] The nano lanthanum oxide and the nano aluminum oxide are mixed according to a weight ratio of 3:2, and then calcined at 215 ℃ for 20 min, and then cooled to room temperature to obtain a calcined material, and then the calcined material is added to 2 times of the sodium silicate solution with a mass fraction of 5% of the total calcined material, and then 2% of the yttrium nitrate solution is added, and then the mixture is ball milled, filtered and dried to obtain a nano agent.

[0072] The ball milling speed of the ball milling in the embodiment is 1000 r / min, and the ball milling time is 2 h.

[0073] The mass fraction of the yttrium nitrate solution in the embodiment is 3%.

[0074] The specific operation steps of the cooling treatment of the effector adjusting liquid in the embodiment are as follows:

[0075] S11: preparation of the effector adjusting liquid:

[0076] S101: 2 parts of the silane coupling agent and 1 part of the stearic acid are added to 5 parts of the sodium lignosulfonate solution, and then 2 parts of the ethanol solvent are added and stirred to obtain a base agent;

[0077] S102: 5 parts of carbon nanotubes, 2 parts of nanometer titanium dioxide are added into 6 parts of dopamine hydrochloride solution, then 1 part of nano silicon sol is added for blending and stirring treatment, after stirring, an adjusting solution is obtained;

[0078] S103: the hydroxyapatite is irradiated in a proton irradiation box for 10 min, the irradiation power is 300 W, and the irradiation is completed;

[0079] The irradiated hydroxyapatite and the adjusting solution are uniformly mixed at a weight ratio of 5:3 and subjected to ball milling treatment at a rotation speed of 1000 r / min for 2 h, and after ball milling, water washing, suction filtration and drying, an adjusted hydroxyapatite agent is obtained;

[0080] The adjusted hydroxyapatite agent and the base agent are fully stirred at a weight ratio of 2:5 to obtain an efficiency adjusting solution;

[0081] S12: the efficiency adjusting solution is sprayed onto the copper surface cast by the continuous casting machine, and the spraying is performed until the copper surface is completely infiltrated and the copper is cooled to room temperature.

[0082] The silane coupling agent of the embodiment is silane coupling agent KH560; the mass fraction of the sodium lignosulfonate solution is 4%.

[0083] The mass fraction of the dopamine hydrochloride solution of the 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 min.

[0084] The entry temperature of the rolling treatment of the embodiment is 840℃, and the exit temperature is 460℃.

[0085] Embodiment 2.

[0086] The precision copper rod and copper bar automatic continuous casting and rolling production process of the embodiment comprises the following steps:

[0087] Step one: preparation of copper melt:

[0088] The base copper is first melted into copper liquid, then a modified additive accounting for 5-10% of the total amount of the copper liquid is added into the copper liquid, and the melting is continued for 5 min to obtain the copper melt;

[0089] Step two: the copper melt is cast into the continuous casting machine, and then the efficiency adjusting solution is used for cooling treatment to obtain an efficiency adjusting improved copper body;

[0090] Step three: the efficiency adjusting improved copper body is subjected to rolling treatment to obtain a copper rod body, and then the copper rod body is subjected to cleaning and cooling, and the water outlet pressure of the cleaning is 2 MPa;

[0091] Step four: finally, the precision copper rod and copper bar are prepared after flaw detection, wax coating, rod winding and packaging.

[0092] S01: adding 10% of the total amount of dolomite sodium alginate solution and 5% of the total amount of dolomite phosphate buffer solution into dolomite, then ball milling in a ball mill for 2h, the ball milling speed is 1000r / min, after ball milling, the dolomite liquid is obtained;

[0093] S02: adding 10% of the total amount of dolomite sodium alginate solution and 2-5% of the total amount of magnesium chloride solution into the magnesium chloride solution with a mass fraction of 10-15%, then stirring sufficiently, filtering and drying to obtain the magnesium chloride modifier;

[0094] S03: first adding 5% of the total amount of rare earth cerium powder into sodium citrate solution with a mass fraction of 5%, then adding 15% of the total amount of rare earth cerium powder into magnesium chloride modifier, and 5% of the total amount of rare earth cerium powder into sodium dodecyl benzene sulfonate, stirring sufficiently, filtering and drying to obtain the modified additive.

[0095] The mass fraction of the sodium alginate solution in this embodiment is 5%; the pH value of the phosphate buffer solution is 6.0.

[0096] The preparation method of the nanometer agent in this embodiment is as follows:

[0097] Mixing nanometer lanthanum oxide and nanometer aluminum oxide according to a weight ratio of 3:2, then heat calcining at 220℃ for 20min, cooling to room temperature after calcination, obtaining the calcined material, then adding the calcined material into sodium silicate solution with a mass fraction of 5% and 4 times of the total amount of the calcined material, then adding yttrium nitrate solution with 5% of the total amount of the calcined material, ball milling sufficiently, filtering and drying to obtain the nanometer agent.

[0098] The ball milling speed for sufficient ball milling in this embodiment is 1500r / min, and the ball milling time is 2h.

[0099] The mass fraction of the yttrium nitrate solution in this embodiment is 5%.

[0100] The specific operation steps of the cooling treatment of the adjusting liquid in this embodiment are as follows:

[0101] S11: preparation of the adjusting liquid:

[0102] S101: adding 5 parts of silane coupling agent and 3 parts of stearic acid into 8 parts of sodium lignosulfonate solution, then adding 4 parts of ethanol solvent and stirring sufficiently to obtain the base agent;

[0103] S102: adding 8 parts of carbon nanotube and 4 parts of nanometer titanium dioxide into 10 parts of dopamine hydrochloride solution, then adding 3 parts of silicon sol and stirring to obtain the adjusting liquid;

[0104] S103: irradiating hydroxyapatite in a proton irradiation box for 15min, the irradiation power is 350W;

[0105] The irradiated hydroxyapatite and the adjusting liquid are mixed at a weight ratio of 5:3, ball-milled at a speed of 1000 r / min for 2 h, washed with water, filtered, and dried to obtain an adjusted hydroxyapatite agent;

[0106] The adjusted hydroxyapatite agent and the base agent are stirred at a weight ratio of 2:5 to obtain an adjusting liquid;

[0107] S12: The adjusting liquid is sprayed onto the copper surface cast by the continuous casting machine until the copper surface is completely infiltrated and the copper is cooled to room temperature.

[0108] The silane coupling agent in this embodiment is silane coupling agent KH560; the mass fraction of the sodium lignosulfonate solution is 6%.

[0109] The mass fraction of the dopamine hydrochloride solution in this embodiment is 5%; the speed of the blending and stirring treatment in S102 is 550 r / min, and the stirring time is 30 min.

[0110] The entry temperature of the rolling treatment in this embodiment is 840℃, and the exit temperature is 460℃.

[0111] Embodiment 3.

[0112] The precise copper rod and copper bar automatic continuous casting and rolling production process in this embodiment comprises the following steps:

[0113] Step one: preparation of copper melt:

[0114] The base copper is first melted into copper liquid, then 7.5% of the total amount of the copper liquid is added to the modified additive, and the melting is continued for 3.5 min to obtain the copper melt;

[0115] Step two: the copper melt is cast into the continuous casting machine, and then the adjusting liquid cooling treatment is adopted to obtain the improved copper body;

[0116] Step three: the improved copper body is subjected to rolling treatment to obtain the copper rod body, and then the cleaning and cooling are performed, and the water pressure of the cleaning is 2 MPa;

[0117] Step four: finally, the precise copper rod and copper bar are prepared after flaw detection, waxing, rod winding, and packaging.

[0118] S01: 7.5% of the total amount of the dolomite is added to the sodium alginate solution, and 3.5% of the total amount of the dolomite is added to the phosphate buffer solution, then ball-milling is performed in a ball mill for 1.5 h at a speed of 1000 r / min, and the ball-milling is completed to obtain a dolomite liquid;

[0119] S02: Add 7.5% dolomite solution and 3.5% nanometer agent to the magnesium chloride solution with a mass fraction of 12.5%, stir thoroughly, filter and dry to obtain a magnesium chloride modifier;

[0120] 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.

[0121] 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.

[0122] The preparation method of the nanometer agent of this embodiment is:

[0123] Nano-lanthanum oxide and nano-aluminum oxide are mixed in a weight ratio of 3:2, and then calcined at 218°C for 20 minutes. After the calcination is completed, the mixture is cooled to room temperature to obtain a calcined material. The calcined material is then added to a 5% sodium silicate solution with a mass fraction of 3 times the total amount of the calcined material, and then an yttrium nitrate solution with a mass fraction of 3.5% of the total amount of the calcined material is added. The mixture is ball-milled thoroughly, filtered, and dried after the ball-milling is completed to obtain a nano-agent.

[0124] The ball milling speed of this embodiment is 1250 r / min, and the ball milling is 2 h.

[0125] The mass fraction of the yttrium nitrate solution in this embodiment is 4%.

[0126] The specific steps of cooling the effect regulating liquid in this embodiment are as follows:

[0127] S11: Preparation of the effect adjustment solution:

[0128] S101: adding 3.5 parts of a silane coupling agent and 2 parts of stearic acid to 6.5 parts of a sodium lignin sulfonate solution, and then adding 3 parts of an ethanol solvent and stirring thoroughly to obtain a base agent;

[0129] 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 parts of silica sol and stirring the mixture until the stirring is complete to obtain a conditioning solution;

[0130] S103: irradiating the hydroxyapatite in a proton irradiation box for 12.5 minutes at an irradiation power of 320 W, and then ending the irradiation;

[0131] The irradiated hydroxyapatite and the conditioning solution were mixed in a weight ratio of 5:3 and ball-milled at a ball-milling 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 conditioned hydroxyapatite agent;

[0132] The adjusted hydroxyapatite agent and the matrix agent are stirred in a weight ratio of 2:5 to obtain an effective liquid;

[0133] S12: The effective liquid is sprayed onto the copper surface cast by the continuous casting machine, and the spraying is performed until the copper surface is completely infiltrated and the copper is cooled to room temperature.

[0134] The silane coupling agent in this embodiment is silane coupling agent KH560; the mass fraction of the sodium lignosulfonate solution is 5%.

[0135] 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 time is 25 min.

[0136] The entry temperature of the rolling treatment in this embodiment is 840℃, and the exit temperature is 460℃.

[0137] Comparative Example 1.

[0138] Different from Example 3 is that no modified additive is added.

[0139] Comparative Example 2.

[0140] Different from Example 3 is that no magnesium chloride modifier is added in the preparation of the modified additive.

[0141] Comparative Example 3.

[0142] Different from Example 3 is that no dolomite liquid is added in the preparation of the magnesium chloride modifier.

[0143] Comparative Example 4.

[0144] Different from Example 3 is that no nano agent is added in the preparation of the magnesium chloride modifier.

[0145] Comparative Example 5.

[0146] Different from Example 3 is that no magnesium chloride solution is added in the preparation of the magnesium chloride modifier.

[0147] Comparative Example 6.

[0148] Different from Example 3 is that no sodium silicate solution and nano lanthanum oxide treatment are used in the preparation of the nano agent.

[0149] Comparative Example 7.

[0150] Different from Example 3 is that no nano aluminum oxide and yttrium nitrate solution are used in the preparation of the nano agent.

[0151] Comparative Example 8.

[0152] Different from Example 3 is that no rare earth cerium powder is added in the preparation of the modified additive.

[0153] Comparative Example 9.

[0154] Different from Example 3 is that the effector liquid cooling treatment is not used.

[0155] Comparative Example 10.

[0156] Different from Example 3 is that the adjusted hydroxyapatite agent is not added in the effector liquid.

[0157] Comparative Example 11.

[0158] Different from Example 3 is that the irradiated hydroxyapatite is not added in the adjusted hydroxyapatite agent.

[0159] Comparative Example 12.

[0160] Different from Example 3 is that the adjusted liquid treatment is not used in the adjusted hydroxyapatite agent.

[0161] Comparative Example 13.

[0162] Different from Example 3 is that the carbon nanotube and nano silicon sol are not added in the adjusted liquid.

[0163] Comparative Example 14.

[0164] Different from Example 3 is that the nano titanium dioxide is not added in the adjusted liquid, and the dopamine hydrochloride solution is replaced by water.

[0165] The elongation, tensile strength and thermal conductivity of Examples 1-3 and Comparative Examples 1-14 are tested by a conventional test, and the copper rod product is placed under the impact force of 65°C, 10J / cm2for 1h, then under the impact force of-5°C, 10J / cm2for 1h, and finally under the abrasion resistance test of 200r / min, load force 100N, time 60min, to test the cold and hot impact resistance and abrasion resistance stability of the product.

[0166]

[0167] As can be seen from Comparative Examples 1-14 and Examples 1-3,

[0168] The product of Example 3 has excellent elongation, tensile strength and thermal conductivity, and the three properties can be improved in coordination, and the product has excellent stability under cold and hot impact resistance and abrasion resistance environment.

[0169] As can be seen from Comparative Example 1, Comparative Example 9 and Example 3, one of the modified additives and the effector liquid cooling treatment is not added in the product, the product performance coordination appears a deterioration trend, and the product performance stability under cold and hot impact resistance and abrasion resistance conditions is significantly deteriorated, and the two are used in coordination, and the product performance effect is remarkable.

[0170] From the comparative examples 1-5 and example 3, it can be seen that the performance of the product has a deteriorating trend when the magnesium chloride modifier is not added in the preparation of the modified additive, the dolomite liquid is not added in the preparation of the magnesium chloride modifier, the nano agent is not added in the preparation of the magnesium chloride modifier, and the magnesium chloride solution is not added in the preparation of the magnesium chloride modifier;

[0171] From the comparative examples 6-8 and example 3, it can be seen that the performance of the product has a deteriorating trend in different degrees when the sodium silicate solution and nano lanthanum oxide are not used in the preparation of the nano agent, the nano aluminum oxide and yttrium nitrate solution are not used in the preparation of the nano agent, and the rare earth cerium powder is not added in the preparation of the modified additive. The performance of the product is most significant when the nano agent obtained by the specific method of the application is combined with the magnesium chloride solution, the magnesium chloride modifier prepared by the dolomite liquid, and the modified additive obtained by the specific process. The effect is not as obvious as that of the application when other methods are used instead.

[0172] From the comparative examples 10-14 and example 3, it can be seen that the performance of the product has a deteriorating trend in different degrees when the adjusted hydroxyapatite agent is not added in the adjustment liquid, the irradiated hydroxyapatite is not added in the adjusted hydroxyapatite agent, the adjustment liquid is not used in the adjusted hydroxyapatite agent, the carbon nanotube and nano silicon sol are not added in the adjustment liquid, the nano titanium dioxide and dopamine hydrochloride solution are not added in the adjustment liquid, and the water is used instead of the adjustment liquid. The performance of the product is most significant when the adjustment liquid obtained by the specific method of the application is combined with the hydroxyapatite of the application to obtain the adjusted hydroxyapatite agent, and the adjustment liquid obtained by the specific method.

[0173] It is apparent for those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, and the scope of the present application should be defined by the appended claims rather than the foregoing description, and it is intended to encompass all changes falling within the meaning and range of equivalents of the claims.

[0174] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

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 a conditioning liquid to obtain a copper body with improved conditioning; Step 3: The improved copper body is then rolled to obtain a copper rod, which is then cleaned and cooled. The water pressure of the cleaning is 2 MPa. Step 4: Finally, the precision copper rods and bars are obtained after flaw detection, wax coating, winding and packaging; The preparation method of the modified additive is: S01: adding a sodium alginate solution (5-10% of the total amount of dolomite) and a phosphate buffer solution (2-5% of the total amount of dolomite) to the dolomite, and then ball milling the mixture in a ball mill for 1-2 hours at a speed of 1000 r / min to obtain a dolomite liquid; S02: adding 5-10% dolomite liquid and 2-5% nano agent to a 10-15% by mass fraction magnesium chloride solution, stirring thoroughly, filtering, and drying 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, stirred thoroughly, filtered, and dried to obtain a modified additive; The mass fraction of the sodium alginate solution is 2-5%; the pH value of the phosphate buffer solution is 5.5-6.0; 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 calcined at 215-220° C. for 20 minutes. After calcination, the mixture is cooled to room temperature to obtain a calcined material. The calcined material is then added to a 5% sodium silicate solution having a mass fraction of 2-4 times the total amount of the calcined material, and then an yttrium nitrate solution having a mass fraction of 2-5% of the total amount of the calcined material is added. The mixture is ball-milled thoroughly, filtered, and dried to obtain a nano-agent. 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 thoroughly 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 parts of nano-silica sol, blending and stirring, and stirring to obtain a conditioning 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 conditioning solution were mixed in a weight ratio of 5:3 and ball-milled at a ball-milling 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 conditioned 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 conditioning liquid onto the copper surface cast by the continuous casting machine until the copper surface is completely soaked and the copper cools to room temperature.

2. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 1, characterized in that: The ball milling is performed at a speed of 1000-1500 r / min for 2 hours.

3. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 1, characterized in that: The mass fraction of the yttrium nitrate solution is 3-5%.

4. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 1, characterized in that: The silane coupling agent is silane coupling agent KH560; the mass fraction of the sodium lignin sulfonate solution is 4-6%.

5. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 1, 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 450-550 r / min, and the stirring is carried out for 20-30 minutes.

6. The automated continuous casting and rolling production process for precision copper rods and bars according to claim 1, characterized in that: The rolling process had an entry temperature of 840°C and an exit temperature of 460°C.

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