CN113774251A - Aluminum bronze conducting bar product for nuclear power and processing technology thereof - Google Patents
Aluminum bronze conducting bar product for nuclear power and processing technology thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
- H01B1/026—Alloys based on copper
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
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Abstract
The invention relates to the technical field of aluminum bronze alloy and processing technology thereof, in particular to an aluminum bronze conducting bar product for nuclear power, which has the technical scheme that: the alloy material comprises 0.05-0.1 wt% of PbB, 1.5 wt% of Fe1, 0.2-0.3 wt% of Zns, 2.2-4.2 wt% of Nis, 3.5-6.5 wt% of Mns, 6.5-9.0 wt% of Als, and the balance of Cu, and has the beneficial effects that: the aluminum bronze alloy has the advantages that the quality problem of slag inclusion of cast ingots can be reduced due to the proportion of the aluminum bronze alloy, the conductivity of the aluminum bronze alloy is high, the conductivity of the aluminum bronze alloy is improved, a copper ingot is processed into a blank of a conducting bar in a hot extrusion mode, the quality problem of cracking of the blank of the conductor when the blank of the conductor is stretched and straightened in a cold wave mode can be avoided, the mechanical property of the blank of the conductor can be greatly improved through two aging treatments, the hardness and the strength of the blank of the conducting bar are improved, the plasticity, the toughness and the internal stress of the blank of the conducting bar are greatly reduced, the yield strength of the produced aluminum bronze conducting bar can meet the use requirements of users, the product yield can be improved, and the product yield can reach more than 60%.
Description
Technical Field
The invention relates to the technical field of aluminum bronze alloy and processing technology thereof, in particular to an aluminum bronze conducting bar product for nuclear power and a processing technology thereof.
Background
The aluminum bronze alloy is a copper-based alloy taking aluminum as a main alloy element, is aluminum bronze containing iron and manganese elements, has a plurality of excellent performances, has high strength, hardness and wear resistance, is commonly used for manufacturing parts such as gear blanks, threads and the like, has good corrosion resistance, can be used for manufacturing corrosion-resistant parts such as propellers, valves and the like, can be used for manufacturing sparkless tool materials, generally contains no more than 11.5 percent of aluminum, sometimes also contains a proper amount of elements such as iron, nickel, manganese and the like to further improve the performances, can be strengthened by heat treatment, has higher strength than tin bronze, has better high-temperature oxidation resistance, has higher strength and good wear resistance for screws, nuts, copper sleeves, sealing rings and the like with higher strength and is used for wear-resistant parts, and has the most prominent characteristic of good wear resistance, the aluminum bronze alloy containing iron and manganese elements has high strength and wear resistance, can improve hardness after quenching and tempering, has better high-temperature corrosion resistance and oxidation resistance, has good corrosion resistance in atmosphere, fresh water and seawater, has good machinability, can be welded and is not easy to braze, has good pressure processing under a hot state, has excellent heat conductivity coefficient and stable rigidity, has the advantages of no die sticking and workpiece scratching when being used as a die material for drawing and rolling a stainless steel plate type heat exchanger, becomes a novel die material, has a shape memory effect, has been developed as a shape memory alloy, has relatively low price, becomes a partial substitute of expensive metal materials, such as tin bronze, stainless steel, nickel-based alloy and the like, is more and more popular due to the excellent characteristics of the aluminum bronze, and plays an important role in civil and military industries, the aluminum bronze Cu-8Al-4Mn-Ni bar has good corrosion resistance, excellent mechanical property and high-temperature property, good impact toughness and proper conductivity, and is very suitable for being used as a winding material of a rotor of a nuclear power engine.
Along with the complication of the service environment, higher requirements are put forward on the strength, heat resistance and other properties of the aluminum bronze, the existing aluminum bronze ingot casting has poor surface quality when the ingot casting is carried out according to the chemical component proportion, the problem of slag inclusion quality can occur during the ingot casting, the conductivity of a finished product is low and is often in the lower limit of the standard, the yield strength cannot meet the requirements, the quality problem of cracking is easily caused when the alloy is stretched and straightened, and the comprehensive mechanical property and the conductivity of the copper bar cannot meet the user applicability.
Therefore, the aluminum bronze conducting bar product for nuclear power and the processing technology thereof are necessary.
Disclosure of Invention
Therefore, the invention provides an aluminum bronze conducting bar product for nuclear power and a processing technology thereof, the quality problem of slag inclusion of cast ingots can be reduced through the proportion of the aluminum bronze alloy, the conductivity of the aluminum bronze alloy is higher, the conductivity of the aluminum bronze alloy is improved, a copper ingot is processed into a blank of a conducting bar in a hot extrusion mode, the quality problem of cracking of the blank of a conductor when the blank is stretched and straightened in a cold wave can be avoided, the mechanical property of the blank of the conductor can be greatly improved through two aging treatments, the hardness and the strength of the blank of the conducting bar are improved, the plasticity, the toughness and the internal stress of the blank of the conducting bar are greatly reduced, the yield strength of the produced aluminum bronze conducting bar can meet the use requirements of users, the product yield is greatly improved, the product yield can reach more than 60 percent, so as to solve the complication of the service environment, the alloy has the advantages that higher requirements are provided for the strength, heat resistance and other properties of aluminum bronze, the surface quality is poor when the existing aluminum bronze ingot is cast, the problem of slag inclusion quality can occur during ingot casting, the conductivity of a finished product is low and is often in the lower limit of the standard, the yield strength cannot meet the requirements, the alloy is easy to crack during stretching and straightening, and the comprehensive mechanical property and conductivity of a copper bar cannot meet the user applicability.
In order to achieve the above purpose, the invention provides the following technical scheme: the aluminum bronze conducting bar product for nuclear power comprises 0.05-0.1 wt% of Pb0.05, 1.5 wt% of Fe1, 0.2-0.3 wt% of Zn0.2-4.2 wt% of Ni2, 3.5-6.5 wt% of Mn3, 6.5-9.0 wt% of Al6.5-9.0 wt% of Al, and the balance of Cu.
Preferably, the sum of the elements of Pb, Fe, Zn, Ni, Mn, AI, Ni and Cu is not less than 99.5%.
Preferably, the aluminum bronze conducting bar product for nuclear power is Pb0.05wt%, Fe1 wt%, Zn0.2wt%, Ni2.2wt%, Mn3.5wt%, Al6.5wt%, and the balance of Cu.
Preferably, the aluminum bronze conducting bar product for nuclear power is 0.75wt% of Pb0.75wt%, Fe1.25wt%, Zn0.25wt%, Ni3.2wt%, Mn5 wt%, Al6.57.75wt%, and the balance of Cu.
Preferably, the aluminum bronze conducting bar product for nuclear power is Pb0.1wt%, Fe1.5wt%, Zn0.3wt%, Ni4.2wt%, Mn6.5wt%, Al9.0wt%, and the balance of Cu.
The processing technology of the aluminum bronze conducting bar product for nuclear power comprises the following steps:
(1) mixing Pb, Fe, Zn, Ni, Mn, AI, Ni and Cu for semi-continuous casting;
(2) sawing the semi-continuously cast product into ingots according to the corresponding process length standard and cutting the ingots into copper ingots;
(3) carrying out hot extrusion on the copper ingot, extruding the copper ingot into a blank of a required conducting bar, and detecting the size of the blank of the conducting bar according to the quality requirement standard;
(4) carrying out online solid solution on the blank of the conducting bar, and carrying out cold wave stretching treatment after the blank of the conducting bar is subjected to online solid solution;
(5) sequentially carrying out aging treatment, straightening, aging treatment and straightening treatment on the blank of the conducting bar;
(6) carrying out internal tissue flaw detection on the blank of the straight guide bar, and sawing the blank into copper bars and blanking after the internal tissue flaw detection is finished;
(7) and (4) carrying out quality inspection on the surface of the copper bar according to the product quality requirement standard, checking each qualified product, packaging and warehousing.
Preferably, in the step (3), before the hot extrusion, the surface of the copper ingot needs to be treated, and the cutting burrs on the surface of the copper ingot are treated, and in the hot extrusion, the copper ingot needs to be heated in an induction heating furnace, the copper ingot is heated to 800-.
Preferably, the online solid solution in the step (4) requires that the billet of the conducting bar is heated to a high temperature and is kept at a constant temperature in a single-phase region, so that the excess phase is fully dissolved in the solid solution and then is rapidly cooled.
Preferably, the actual effect treatment in the step (5) needs to anneal the blank of the conducting bar in a horizontal chamber vacuum furnace at 500-.
Preferably, the internal tissue inspection in the step (6) requires finished product inspection of the billet of the conducting bar.
The invention has the beneficial effects that: the aluminum bronze alloy has the advantages that the quality problem of slag inclusion of cast ingots can be reduced due to the proportion of the aluminum bronze alloy, the conductivity of the aluminum bronze alloy is high, the conductivity of the aluminum bronze alloy is improved, a copper ingot is processed into a blank of a conducting bar in a hot extrusion mode, the quality problem of cracking of the blank of the conductor when the blank of the conductor is stretched and straightened in a cold wave mode can be avoided, the mechanical property of the blank of the conductor can be greatly improved through two aging treatments, the hardness and the strength of the blank of the conducting bar are improved, the plasticity, the toughness and the internal stress of the blank of the conducting bar are greatly reduced, the yield strength of the produced aluminum bronze conducting bar can meet the use requirements of users, the product yield is greatly improved, the product yield can reach more than 60%, and the production capacity of 3-5 tons per month can be achieved.
Detailed Description
While the preferred embodiments of the present invention will be described below, it should be understood that the preferred embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.
Example 1:
the aluminum bronze conductive bar product for nuclear power and the processing technology thereof provided by the invention comprise 0.05wt% of Pb0.05wt%, 1 wt% of Fe, 0.2wt% of Zn0.2wt%, 2.2wt% of Ni2.5wt% of Mn3.5wt% of Al6.5wt% of Cu as the rest.
Further, the total of the elements of Pb, Fe, Zn, Ni, Mn, AI, Ni and Cu is not less than 99.5%.
The processing technology of the aluminum bronze conducting bar product for nuclear power comprises the following steps:
(1) mixing Pb, Fe, Zn, Ni, Mn, AI, Ni and Cu for semi-continuous casting;
(2) sawing the semi-continuously cast product into ingots according to the corresponding process length standard and cutting the ingots into copper ingots;
(3) the method comprises the following steps of carrying out hot extrusion on a copper ingot, extruding the copper ingot into a blank of a required guide bar, detecting the size of the blank of the guide bar according to a quality requirement standard, wherein the hot extrusion needs to heat the copper ingot in an induction heating furnace, heat the copper ingot to 800 ℃, heat the copper ingot in a less-oxidation heating mode in the hot extrusion process, carry out surface treatment on the copper ingot before carrying out hot extrusion, and treat cutting burrs on the surface of the copper ingot, specifically, heating the copper ingot to 800 ℃ in the induction heating furnace, removing iron oxide scales on the surface and rapidly putting the copper ingot into a concave die cavity of a corresponding hot extrusion die to carry out extrusion after heating the copper ingot to the required temperature, thus the blank of the required guide bar can be extruded, the size of the blank is tested after the blank is extruded, the hot extrusion can ensure that the blank of the guide bar has good forming plasticity, and the material deformation resistance is reduced, the requirements on the die material and the extrusion equipment are reduced, the blank of the conducting bar is small in allowance formed by hot extrusion processing, the material is saved, the blank of the conducting bar can achieve high surface quality and dimensional accuracy after the blank of the conducting bar is formed by hot extrusion, the blank of the conducting bar can have good mechanical property by hot extrusion, the time for completing the hot extrusion process is short, the duration time of the hot extrusion is usually completed within 3-6S, the temperature reduction of a copper ingot in the hot extrusion process of the copper ingot is avoided, the pressure is increased sharply, the metal plastic deformation capability is poor, the forming is influenced, and the mechanical property of the copper ingot is influenced, the copper ingot is heated in an induction heating furnace in a less-oxidation mode, the iron scale on the surface of the heated copper ingot can be reduced, and the blank quality of the conducting bar can be improved, meanwhile, the service life of the hot extrusion die can be prolonged to reduce the production cost of the aluminum bronze conducting bar, the end face of the copper ingot needs to be flat before the copper ingot is subjected to hot extrusion, burrs cannot be left on the surface of the copper ingot, otherwise, the defects of uneven wall thickness, uneven upper opening and the like of a blank of the extruded conducting bar can be caused in the hot extrusion process, the quality of the blank of the conducting bar is further influenced, and the subsequent process is influenced;
(3) the method comprises the following steps of carrying out online solid solution on a blank of a conducting bar, carrying out cold wave stretching treatment after the online solid solution on the blank of the conducting bar, wherein the online solid solution needs to heat the blank of the conducting bar to a high-temperature single-phase region for keeping the constant temperature, so that an excess phase is fully dissolved in a solid solution and then is rapidly cooled, and particularly, the blank of a conductor can obtain a uniform supersaturated solid solution after the online solid solution, so that the aging treatment is facilitated to precipitate a carbide, gamma' and other strengthening phases with fine particles and uniform distribution, and simultaneously, the stress generated in the hot extrusion processing process of the blank of the conducting bar is eliminated, so that the alloy is recrystallized, the online solid solution can obtain a proper grain size, and the high-temperature creep resistance of the alloy can be ensured;
(5) the method comprises the following steps of sequentially carrying out aging treatment, straightening, aging treatment and straightening treatment on a blank of a guide bar, wherein the actual treatment needs to anneal the blank of the guide bar at 500 ℃ in a horizontal chamber vacuum furnace and heat the blank to 500 ℃, then keeping the temperature for 3 hours, annealing the blank in the horizontal chamber vacuum furnace and cooling the blank to the normal temperature, and then taking the blank out of the vacuum furnace, specifically, when carrying out solution treatment before the aging treatment, the heating temperature must be strictly controlled so that solute atoms can be dissolved into the solid solution to the maximum extent and the alloy cannot be melted, annealing the blank of the guide bar at 500 ℃ in the horizontal chamber vacuum furnace and heating the blank to 500 ℃ can ensure that the solute atoms can be dissolved into the solid solution to the maximum extent and the blank of the guide bar cannot be melted, the aging treatment enables the blank of the guide bar to be subjected to cold plastic deformation or casting, and then placing the blank at a higher temperature or room temperature after forging, the performance, the shape and the size of the guide bar change along with the change of time, the aging treatment can improve the hardness and the strength of the blank of the guide bar, and can reduce the plasticity, the toughness and the internal stress of the blank of the guide bar, and the blank of the guide bar can greatly improve the hardness and the strength of the blank of the guide bar through two times of aging treatment, so that the plasticity, the toughness and the internal stress of the blank of the guide bar are greatly reduced, the mechanical performance of the blank of the guide bar is improved, and the blank of the guide bar can be well aged after being subjected to heat preservation for 3 hours;
(6) performing internal tissue flaw detection on the blank of the relatively straight guide bar, sawing the blank into a copper bar and blanking after the internal tissue flaw detection is finished, wherein the internal tissue flaw detection needs to perform finished product detection on the blank of the guide bar;
(7) and (4) carrying out quality inspection on the surface of the copper bar according to the product quality requirement standard, checking each qualified product, packaging and warehousing.
Example 2:
the aluminum bronze conducting bar product for nuclear power and the processing technology thereof provided by the invention are that Pb0.75wt%, Fe1.25wt%, Zn0.25wt%, Ni3.2wt%, Mn5 wt%, Al6.57.75wt%, and the balance of Cu.
Further, the total of the elements of Pb, Fe, Zn, Ni, Mn, AI, Ni and Cu is not less than 99.5%.
The processing technology of the aluminum bronze conducting bar product for nuclear power comprises the following steps:
(1) mixing Pb, Fe, Zn, Ni, Mn, AI, Ni and Cu for semi-continuous casting;
(2) sawing the semi-continuously cast product into ingots according to the corresponding process length standard and cutting the ingots into copper ingots;
(3) the method comprises the following steps of carrying out hot extrusion on a copper ingot, extruding the copper ingot into a blank of a required guide bar, detecting the size of the blank of the guide bar according to a quality requirement standard, wherein the hot extrusion needs to heat the copper ingot in an induction heating furnace, heat the copper ingot to 850 ℃, heat the copper ingot in a less-oxidation heating mode in the hot extrusion process, carry out surface treatment on the copper ingot before carrying out hot extrusion, and treat cutting burrs on the surface of the copper ingot, specifically, heating the copper ingot to 850 ℃ in the induction heating furnace, removing iron oxide scales on the surface and rapidly putting the copper ingot into a concave die cavity of a corresponding hot extrusion die to carry out extrusion after heating the copper ingot to the required temperature, thus the blank of the required guide bar can be extruded, the size of the blank is tested after the blank is extruded, the hot extrusion can ensure that the blank of the guide bar has good forming plasticity, and the material deformation resistance is reduced, the requirements on the die material and the extrusion equipment are reduced, the blank of the conducting bar is small in allowance formed by hot extrusion processing, the material is saved, the blank of the conducting bar can achieve high surface quality and dimensional accuracy after the blank of the conducting bar is formed by hot extrusion, the blank of the conducting bar can have good mechanical property by hot extrusion, the time for completing the hot extrusion process is short, the duration time of the hot extrusion is usually completed within 3-6S, the temperature reduction of a copper ingot in the hot extrusion process of the copper ingot is avoided, the pressure is increased sharply, the metal plastic deformation capability is poor, the forming is influenced, and the mechanical property of the copper ingot is influenced, the copper ingot is heated in an induction heating furnace in a less-oxidation mode, the iron scale on the surface of the heated copper ingot can be reduced, and the blank quality of the conducting bar can be improved, meanwhile, the service life of the hot extrusion die can be prolonged to reduce the production cost of the aluminum bronze conducting bar, the end face of the copper ingot needs to be flat before the copper ingot is subjected to hot extrusion, burrs cannot be left on the surface of the copper ingot, otherwise, the defects of uneven wall thickness, uneven upper opening and the like of a blank of the extruded conducting bar can be caused in the hot extrusion process, the quality of the blank of the conducting bar is further influenced, and the subsequent process is influenced;
(4) the method comprises the following steps of carrying out online solid solution on a blank of a conducting bar, carrying out cold wave stretching treatment after the online solid solution on the blank of the conducting bar, wherein the online solid solution needs to heat the blank of the conducting bar to a high-temperature single-phase region for keeping the constant temperature, so that an excess phase is fully dissolved in a solid solution and then is rapidly cooled, and particularly, the blank of a conductor can obtain a uniform supersaturated solid solution after the online solid solution, so that the aging treatment is facilitated to precipitate a carbide, gamma' and other strengthening phases with fine particles and uniform distribution, and simultaneously, the stress generated in the hot extrusion processing process of the blank of the conducting bar is eliminated, so that the alloy is recrystallized, the online solid solution can obtain a proper grain size, and the high-temperature creep resistance of the alloy can be ensured;
(5) the method comprises the following steps of sequentially carrying out aging treatment, straightening, aging treatment and straightening treatment on a blank of a guide bar, wherein the actual treatment needs to anneal the blank of the guide bar at 550 ℃ in a horizontal chamber vacuum furnace and heat the blank to 550 ℃, then preserving heat for 4 hours, annealing the blank in the horizontal chamber vacuum furnace and cooling the blank to the normal temperature, and then taking the blank out of the vacuum furnace, specifically, when carrying out solution treatment before the aging treatment, the heating temperature must be strictly controlled so that solute atoms can be dissolved into the solid solution to the maximum extent and the alloy cannot be melted, annealing the blank of the guide bar at 550 ℃ in the horizontal chamber vacuum furnace and heating the blank to 550 ℃ can make the solute atoms be dissolved into the solid solution to the maximum extent and the blank of the guide bar cannot be melted, the aging treatment enables the blank of the guide bar to be subjected to cold plastic deformation or casting, and placing the blank at a higher temperature or room temperature after forging, the performance, the shape and the size of the guide bar change along with the change of time, the aging treatment can improve the hardness and the strength of the blank of the guide bar, and can reduce the plasticity, the toughness and the internal stress of the blank of the guide bar, and the blank of the guide bar can greatly improve the hardness and the strength of the blank of the guide bar through two times of aging treatment, so that the plasticity, the toughness and the internal stress of the blank of the guide bar are greatly reduced, the mechanical performance of the blank of the guide bar is improved, and the blank of the guide bar can be well aged for 4 hours;
(6) performing internal tissue flaw detection on the blank of the relatively straight guide bar, sawing the blank into a copper bar and blanking after the internal tissue flaw detection is finished, wherein the internal tissue flaw detection needs to perform finished product detection on the blank of the guide bar;
(7) and (4) carrying out quality inspection on the surface of the copper bar according to the product quality requirement standard, checking each qualified product, packaging and warehousing.
Example 3:
the aluminum bronze conducting bar product for nuclear power and the processing technology thereof provided by the invention are that Pb0.1wt%, Fe1.5wt%, Zn0.3wt%, Ni4.2wt%, Mn6.5wt%, Al9.0wt% and the balance of Cu are used as the aluminum bronze conducting bar product for nuclear power.
Further, the total of the elements of Pb, Fe, Zn, Ni, Mn, AI, Ni and Cu is not less than 99.5%.
The processing technology of the aluminum bronze conducting bar product for nuclear power comprises the following steps:
(1) mixing Pb, Fe, Zn, Ni, Mn, AI, Ni and Cu for semi-continuous casting;
(2) sawing the semi-continuously cast product into ingots according to the corresponding process length standard and cutting the ingots into copper ingots;
(3) the method comprises the following steps of carrying out hot extrusion on a copper ingot, extruding the copper ingot into a blank of a required guide bar, detecting the size of the blank of the guide bar according to a quality requirement standard, wherein the hot extrusion needs to heat the copper ingot in an induction heating furnace, heat the copper ingot to 900 ℃, heat the copper ingot in a less-oxidation heating mode in the hot extrusion process, carry out surface treatment on the copper ingot before carrying out hot extrusion, and treat cutting burrs on the surface of the copper ingot, specifically, heating the copper ingot to 900 ℃ in the induction heating furnace, removing iron oxide scales on the surface and rapidly putting the copper ingot into a concave die cavity of a corresponding hot extrusion die to carry out extrusion after heating the copper ingot to the required temperature, thus the blank of the required guide bar can be extruded, the size of the blank is tested after the blank is extruded, the hot extrusion can ensure that the blank of the guide bar has good forming plasticity, and the material deformation resistance is reduced, the requirements on the die material and the extrusion equipment are reduced, the blank of the conducting bar is small in allowance formed by hot extrusion processing, the material is saved, the blank of the conducting bar can achieve high surface quality and dimensional accuracy after the blank of the conducting bar is formed by hot extrusion, the blank of the conducting bar can have good mechanical property by hot extrusion, the time for completing the hot extrusion process is short, the duration time of the hot extrusion is usually completed within 3-6S, the temperature reduction of a copper ingot in the hot extrusion process of the copper ingot is avoided, the pressure is increased sharply, the metal plastic deformation capability is poor, the forming is influenced, and the mechanical property of the copper ingot is influenced, the copper ingot is heated in an induction heating furnace in a less-oxidation mode, the iron scale on the surface of the heated copper ingot can be reduced, and the blank quality of the conducting bar can be improved, meanwhile, the service life of the hot extrusion die can be prolonged to reduce the production cost of the aluminum bronze conducting bar, the end face of the copper ingot needs to be flat before the copper ingot is subjected to hot extrusion, burrs cannot be left on the surface of the copper ingot, otherwise, the defects of uneven wall thickness, uneven upper opening and the like of a blank of the extruded conducting bar can be caused in the hot extrusion process, the quality of the blank of the conducting bar is further influenced, and the subsequent process is influenced;
(5) the method comprises the following steps of carrying out online solid solution on a blank of a conducting bar, carrying out cold wave stretching treatment after the online solid solution on the blank of the conducting bar, wherein the online solid solution needs to heat the blank of the conducting bar to a high-temperature single-phase region for keeping the constant temperature, so that an excess phase is fully dissolved in a solid solution and then is rapidly cooled, and particularly, the blank of a conductor can obtain a uniform supersaturated solid solution after the online solid solution, so that the aging treatment is facilitated to precipitate a carbide, gamma' and other strengthening phases with fine particles and uniform distribution, and simultaneously, the stress generated in the hot extrusion processing process of the blank of the conducting bar is eliminated, so that the alloy is recrystallized, the online solid solution can obtain a proper grain size, and the high-temperature creep resistance of the alloy can be ensured;
(5) the method comprises the following steps of sequentially carrying out aging treatment, straightening, aging treatment and straightening treatment on a blank of a guide bar, wherein the actual treatment needs to carry out 600 ℃ annealing and heating to 600 ℃ in a bedroom vacuum furnace, then keeping the temperature for 5 hours, and taking the blank out of the vacuum furnace after annealing and cooling to the normal temperature in the bedroom vacuum furnace, specifically, when carrying out solution treatment before the aging treatment, the heating temperature must be strictly controlled so that solute atoms can be dissolved into the solid solution to the maximum extent and the alloy cannot be melted, the blank of the guide bar can be subjected to 600 ℃ annealing and heating to 600 ℃ in the bedroom vacuum furnace so that the solute atoms can be dissolved into the solid solution to the maximum extent and the blank of the guide bar cannot be melted, the aging treatment enables the blank of the guide bar to be subjected to cold plastic deformation or casting, the blank of the guide bar is placed at a higher temperature or room temperature after forging, the performance, the shape and the size of the guide bar change along with the change of time, the aging treatment can improve the hardness and the strength of the blank of the guide bar, and can reduce the plasticity, the toughness and the internal stress of the blank of the guide bar, and the blank of the guide bar can greatly improve the hardness and the strength of the blank of the guide bar by two times of aging treatment, so that the plasticity, the toughness and the internal stress of the blank of the guide bar are greatly reduced, the mechanical performance of the blank of the guide bar is improved, and the blank of the guide bar can be better aged after being subjected to heat preservation for 5 hours;
(6) performing internal tissue flaw detection on the blank of the relatively straight guide bar, sawing the blank into a copper bar and blanking after the internal tissue flaw detection is finished, wherein the internal tissue flaw detection needs to perform finished product detection on the blank of the guide bar;
(7) and (4) carrying out quality inspection on the surface of the copper bar according to the product quality requirement standard, checking each qualified product, packaging and warehousing.
Experiments were conducted on the aluminum bronze conducting bars prepared in examples 1-3 above to obtain the following data:
| example 1 | Example 2 | Example 3 | |
| Electrical conductivity of | Good wine | Good wine | Superior food |
| Yield strength | Superior food | Good wine | Good wine |
| Amount of slag inclusion during casting | Chinese character shao (a Chinese character of 'shao') | Is rarely | Chinese character shao (a Chinese character of 'shao') |
From the above table, it can be seen that the conductive bars of aluminum bronze prepared in examples 1-3 all have good conductivity, yield strength and slag inclusion amount during casting, the conductive bars of aluminum bronze prepared by using the formulation in example 1 have good conductivity, excellent yield strength, and less slag inclusion amount during casting, the conductive bars of aluminum bronze prepared by using the formulation in example 2 have good conductivity, excellent yield strength, and less slag inclusion amount during casting, the conductive bars of aluminum bronze prepared by using the formulation in example 3 have good conductivity, excellent yield strength, and less slag inclusion amount during casting, that is, the aluminum bronze conductive bar prepared by the formulation of example 1 has the best yield strength performance, the aluminum bronze conductive bar prepared by the formulation of example 2 has the least slag inclusion amount during casting, and the aluminum bronze conductive bar prepared by the formulation of example 2 has the best yield strength performance.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (10)
1. The aluminum bronze conducting bar product for nuclear power is characterized in that: comprises 0.05 to 0.1 weight percent of PbO, 1.5 weight percent of Fe1, 0.2 to 0.3 weight percent of ZnO, 2.2 to 4.2 weight percent of NiO, 3.5 to 6.5 weight percent of MnO, 6.5 to 9.0 weight percent of AlO, and the balance of Cu.
2. The aluminum bronze conducting bar product for nuclear power as claimed in claim 2, wherein: the total of the elements of Pb, Fe, Zn, Ni, Mn, AI, Ni and Cu is not less than 99.5%.
3. The aluminum bronze conducting bar product for nuclear power as claimed in claim 1, wherein: the aluminum bronze conducting bar product for nuclear power comprises 0.05wt% of Pb0.05wt%, 1 wt% of Fe, 0.2wt% of Zn0.2wt%, 2.2wt% of Ni2.5wt%, 3.5wt% of Mn6.5wt% of Al6.5wt% of Cu.
4. The aluminum bronze conducting bar product for nuclear power as claimed in claim 1, wherein: the aluminum bronze conducting bar product for nuclear power is 0.75wt% of Pb0.75wt%, 1.25wt% of Fe1.25wt%, 0.25wt% of Zn0.2wt%, 3.2wt% of Ni3.2wt%, 5 wt% of Mn, 6.57.75wt% of Al6.75 wt% of Cu.
5. The aluminum bronze conducting bar product for nuclear power as claimed in claim 1, wherein: the aluminum bronze conducting bar product for nuclear power is Pb0.1wt%, Fe1.5wt%, Zn0.3wt%, Ni4.2wt%, Mn6.5wt%, Al9.0wt%, and the balance of Cu.
6. The processing technology of the aluminum bronze conducting bar product for nuclear power is characterized by comprising the following steps of: the method comprises the following steps:
(1) mixing Pb, Fe, Zn, Ni, Mn, AI, Ni and Cu for semi-continuous casting;
(2) sawing the semi-continuously cast product into ingots according to the corresponding process length standard and cutting the ingots into copper ingots;
(3) carrying out hot extrusion on the copper ingot, extruding the copper ingot into a blank of a required conducting bar, and detecting the size of the blank of the conducting bar according to the quality requirement standard;
(4) carrying out online solid solution on the blank of the conducting bar, and carrying out cold wave stretching treatment after the blank of the conducting bar is subjected to online solid solution;
(5) sequentially carrying out aging treatment, straightening, aging treatment and straightening treatment on the blank of the conducting bar;
(6) carrying out internal tissue flaw detection on the blank of the straight guide bar, and sawing the blank into copper bars and blanking after the internal tissue flaw detection is finished;
(7) and (4) carrying out quality inspection on the surface of the copper bar according to the product quality requirement standard, checking each qualified product, packaging and warehousing.
7. The machining process of the aluminum bronze conducting bar product for nuclear power as claimed in claim 6, wherein the machining process comprises the following steps: in the step (3), before hot extrusion, the surface of the copper ingot needs to be treated, cutting burrs on the surface of the copper ingot are treated, the hot extrusion needs to heat the copper ingot in an induction heating furnace, heat the copper ingot to 800-.
8. The machining process of the aluminum bronze conducting bar product for nuclear power as claimed in claim 6, wherein the machining process comprises the following steps: in the step (4), the online solid solution needs to heat the billet of the conducting bar to a high-temperature single-phase region for constant temperature maintenance, so that the excess phase is fully dissolved in the solid solution and then is rapidly cooled.
9. The machining process of the aluminum bronze conducting bar product for nuclear power as claimed in claim 6, wherein the machining process comprises the following steps: in the actual effect treatment in the step (5), the blank of the conducting bar is annealed at the temperature of 500-600 ℃ in a horizontal chamber vacuum furnace and heated to the temperature of 500-600 ℃, then the temperature is preserved for 3-5 hours, and the blank can be taken out from the horizontal chamber vacuum furnace after being annealed and cooled to the normal temperature.
10. The machining process of the aluminum bronze conducting bar product for nuclear power as claimed in claim 6, wherein the machining process comprises the following steps: and (5) detecting the internal tissues in the step (6) by detecting the flaw, wherein finished product detection needs to be carried out on the blank of the conducting bar.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044747A (en) * | 2022-05-16 | 2022-09-13 | 上海交通大学 | Heat treatment process method for improving strength and toughness of nickel-aluminum bronze alloy |
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| CN101381824A (en) * | 2008-10-09 | 2009-03-11 | 苏州有色金属研究院有限公司 | Multi-aluminum bronze material for pipe |
| CN105506524A (en) * | 2015-12-03 | 2016-04-20 | 中铝洛阳铜业有限公司 | Aluminum iron nickel bronze extruded bar preparation process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101381824A (en) * | 2008-10-09 | 2009-03-11 | 苏州有色金属研究院有限公司 | Multi-aluminum bronze material for pipe |
| CN105506524A (en) * | 2015-12-03 | 2016-04-20 | 中铝洛阳铜业有限公司 | Aluminum iron nickel bronze extruded bar preparation process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115044747A (en) * | 2022-05-16 | 2022-09-13 | 上海交通大学 | Heat treatment process method for improving strength and toughness of nickel-aluminum bronze alloy |
| CN115044747B (en) * | 2022-05-16 | 2023-02-10 | 上海交通大学 | Heat treatment process method for improving strength and toughness of nickel-aluminum bronze alloy |
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Application publication date: 20211210 |