CN109825728A - Aluminum for electric engineering alloy conductor material and preparation method - Google Patents
Aluminum for electric engineering alloy conductor material and preparation method Download PDFInfo
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Abstract
The present invention relates to technical field of alloy material, and in particular to a kind of aluminum for electric engineering alloy conductor material and its preparation method and application.A kind of aluminum for electric engineering alloy conductor material, it is characterized in that according to mass percent meter, including following components: 0.2~1.0% Fe, 0.08~0.4% Cu, 0.02~0.45% RE, 0.002~0.03% Y, 0.001~0.05% B, 0.01~0.8% Mn, 0.01~0.04% Mg, 0.04% Zn, 0.01~0.10% Si, surplus are Al and inevitable impurity.One of the objects of the present invention is to provide a kind of aluminum for electric engineering alloy conductor materials, to improve deficiency existing for existing aluminium alloy conductor, improve its comprehensive performance, tensile strength with higher, stronger extensibility, creep resistance, corrosion resistance, higher electric conductivity under impact resistance, high temperature.
Description
Technical field
The present invention relates to technical field of alloy material, and in particular to a kind of aluminum for electric engineering alloy conductor material and its preparation side
Method and application.
Background technique
Cable industries are to be only second to the second largest industry of auto manufacturing, and wires and cables industry is the rich and influential family of copper consumption,
The total copper consumption of Zhan about 68%, in face of the continuous soaring of continuous exhausted copper ore resource and copper valence, cable industry is with aluminium alloy for copper
Inexorable trend will be become.
With stronger extensibility, fatigue resistance, creep resistance, corrosion resistance, wearability under high temperature and higher
Electric conductivity is met as transmission of electricity, the higher requirement used of comprehensive performance of assembly electrical cables conductor.Currently, aluminium alloy type
It is more but more just for certain a kind of product, the comprehensive performance of aluminium alloy conductor how is promoted, it is wider to be allowed to use scope
It is general, become current aluminum-alloy conductor material demand the most urgent.
Summary of the invention
One of the objects of the present invention is to provide a kind of aluminum for electric engineering alloy conductor materials, are led with improving existing aluminium alloy
Deficiency existing for body, improves its comprehensive performance, tensile strength with higher, stronger extensibility, creep resistance, impact resistance
Property, the corrosion resistance under high temperature, higher electric conductivity.
Technical scheme is as follows:
A kind of aluminum for electric engineering alloy conductor material, it is characterised in that according to mass percent meter, including following components: 0.2
~1.0% Fe, 0.08~0.4% Cu, 0.02~0.45% RE, 0.002~0.03% Y, 0.001~0.05%
B, 0.01~0.8% Mn, 0.01~0.04% Mg, 0.04% Zn, 0.01~0.10% Si, surplus are Al and can not
The impurity avoided.
Further, by mass percentage, the content of Y is 0.004~0.03% in the aluminum alloy materials.
Further, by mass percentage, the content of B is 0.001~0.035% in the aluminum alloy materials.
It further, further include Ga, by mass percentage, Ga is less than 0.02%.
Further, by mass percentage, the content of the single impurity element of the inevitable impurity be 0~
0.03%, the total content of impurity is 0~0.1%.
The preparation method of aluminum for electric engineering alloy conductor material as described in any one in claim 1-5 is prepared, feature exists
In including the following steps:
1) melting: after by mass percentage being melted aluminium ingot heating, Fe, Cu, Y, RE, Mn, Mg, B aluminium is added and closes
Gold pours refining agent to furnace bottom using high pressure nitrogen and refines, through rare earth, borax treatment, after stirring is skimmed, by obtaining after standing
Melt aluminium alloy；
2) casting: holding furnace mixing aluminium alloy melt flows into casting machine by ceramic filter plate and is cast, and forms cast bar,
Through mill milling at design size Aluminum conductor conductor material；
3) ageing treatment: aluminum for electric engineering closes conductor at 240~390 DEG C, after carrying out 2-14h ageing treatment, takes out from furnace,
Natural cooling for 24 hours after, obtain stability aluminum-alloy conductor material.
Further, in step 1), Fe, Cu, Y, RE, Mn, Mg, B are added in the form of aluminium intermediate alloy, RE
Refer mainly to the terres rares containing cerium (Ce).
Further, in step 1), the intermediate alloy of the addition, iron-content is 19~23% in ferroaluminium,
Copper content is 48~55% in albronze, and content of rare earth is 9.5~12.0% in rare earth aluminium alloy, yttrium content in yttrium aluminium alloy
It is 8~10%, boron Boron in Aluminium Alloy content is 2.5~3.5%, contains manganese in manganese, magnesium alloy, magnesium is 9~11%.
Further, in step 1), aluminium ingot, albronze, ferroaluminium are first heated to 700 in furnace cupola~
740 DEG C, until after being completely melt, holding furnace is flowed into, Y, RE, Mn, Mg, B aluminium alloy, after mixing evenly is added, is blown into refining agent, into
Row refining, degasification, remove the gred after 18min, after 730~765 DEG C of standing heat preservation 30min, obtain melt aluminium alloy.
Further, in step 1), the refining agent is 42%NaCl+50%KCl+4%Na+4%
Na3AlF6, based on villaumite and villiaumite.
Further, in step 2), the casting, casting ladle temperature is 725~735 DEG C when casting, the casting of generation
Temperature is 480~510 DEG C, and rolling bar temperature is 320 DEG C or so；Casting machine voltage be 70V-100V, rolling mill speed be 6.5~
9.5m/min, milling train electric current are 210-290A.
In conclusion the invention has the following advantages:
In one of present invention, in the aluminum for electric engineering alloy conductor material that provides, by the way that certain mass is added in aluminum substrate
The Fe of ratio, Cu, RE, Y, B, Mn, Mg are merged into each other with aluminum substrate, can effectively remove the impurity element in aluminum substrate, and refinement is brilliant
Core inhibits nucleus or the second phase to increase, significantly improves the conductivity, tensile strength, elongation, resistance to compression creep properties of conductor material
The comprehensive performances such as energy, impact resistance.
0.2~1.0% Fe (iron) is added by mass percentage in the aluminum for electric engineering alloy conductor material of offer, so that
The creep-resistant property of conductor material is obviously improved；
The aluminum for electric engineering alloy conductor material of offer is added 0.08~0.4% Cu (copper), makes by mass percentage
The intensity and electric conductivity for obtaining conductor material are obviously improved and increase the resistance stability that alloy is waited at high temperature；
0.02~0.45% RE (rare earth) is added by mass percentage in the aluminum for electric engineering alloy conductor material of offer,
With good catalytic action, it can make to be formed other element reactions in the Xiang Zaiyu molten aluminum of nucleus originally, effectively inhibit brilliant
Core or the second phase grow up and degasification (hydrogen) and the structure property for improving aluminium, to effectively improve leading for aluminum-alloy conductor material
Electrical property and processing performance；
0.002~0.03% Y (yttrium) is added by mass percentage in the aluminum for electric engineering alloy conductor material of offer, belongs to
In one of rare earth metal, it is a kind of excellent alterant, the precipitated phase of crystal grain and crystal boundary can be refined, play intercrystalline strengthening
Effect, crystal grain distribution is orderly aligned, improves the electric conductivity of aluminum-alloy conductor material；
The aluminum for electric engineering alloy conductor material of offer is added 0.001~0.05% B (boron), is by mass percentage
A kind of alterant, can eliminate the illeffects of microelement in aluminium, while play Grain refinement, enhance electric conductivity；
0.01~0.8% Mn (manganese), energy is added by mass percentage in the aluminum for electric engineering alloy conductor material of offer
The intensity for enough improving alloy, improves the wearability and corrosion resistance of alloy；
0.01~0.04% Mg (magnesium), energy is added by mass percentage in the aluminum for electric engineering alloy conductor material of offer
The intensity for enough improving alloy, after conductor is made, under same interfacial pressure, can be improved stable contact.
The two of the present invention, the preparation method of the aluminum for electric engineering alloy conductor material provided, by successively carrying out melting, casting
It makes, roll, ageing treatment, so that manufactured aluminum for electric engineering alloy conductor material not only has excellent mechanical performance, but also having
There are good electric conductivity, creep-resistant property and impact resistance etc..
The three of the present invention, using the aluminum for electric engineering alloy conductor material and preparation method of offer, to efficiently solve electricity
The conductor aluminium alloy wire of cable, improves the comprehensive performance of aluminium alloy wire, meets requirement of the conductor to comprehensive performance of cable,
Specific requirement refers to " conductor (GB/T 3956-2008/IEC 60228:2004) of cable ", especially meets conventional aluminium conjunction
Gold thread is to the 5th kind, the 6th kind of more demanding tensile strength of conductor, elongation, conductivity, creep-resistant property, impact resistance
The requirement being unable to satisfy.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below to the skill of the embodiment of the present invention
Art scheme is clearly and completely described.Obviously, described embodiment is a part of the embodiments of the present invention, rather than complete
The embodiment in portion.Based on described the embodiment of the present invention, those of ordinary skill in the art are before without creative work
Every other embodiment obtained is put, shall fall within the protection scope of the present invention.
Embodiment 1
One, melting
1, furnace cupola and holding furnace melting material selection
Aluminium ingot: 6005kg (Si:0.09%, Fe:0.12%, Cu:0.004%, Mg:0.018%), ferroaluminium:
(Fe content: 22%), rare earth aluminium alloy: (RE content: 9.6%), boron aluminium alloy: (B contains 112.8kg 348.6kg 310.2kg
, albronze amount: 3.3%): (Cu content: 49.5%), yttrium aluminium alloy: (Y content: 8.5%), manganese aluminium closes 26.6kg 60.2kg
Gold: 568.9kg (Mn content: 10.5%), magnesium alloy: 20.2kg (Mg content: 9.5%), refining agent: 13.8kg (42%
NaCl+50%KCl+4%Na+4%Na3AlF6).
2, it feeds
2.1, which are added aluminium ingot, albronze, ferroaluminium by the collocation of above-mentioned weight in charger, send to furnace cupola, adds
Temperature 700~740 DEG C sufficiently melt after, wait flow into holding furnace, other aluminum alloy materials are added in holding furnace, to guarantee material
The abundant fusion of material is uniform.
When 2.2 aluminium alloy liquid are filled with thermal insulation furnace body volume about 40%, 1/3 amount of aluminum alloy materials is added, to aluminium alloy
When liquid is filled with thermal insulation furnace body volume about 70%, 2/3 amount of aluminum alloy materials is added, all flows into holding furnace to aluminium alloy liquid
In, it is added the surplus of aluminum alloy materials, it should position distribution be uniform as far as possible in furnace when launching aluminum alloy materials.Aluminum alloy materials
Primary at interval of being stirred after twenty minutes after investment, stirring 5 minutes, are allowed to alloying component and are sufficiently mixed uniformly, and have every time
Effect carries out rare earth and borax treatment.
3, temperature controls
Other alloy materials are added by above-mentioned ingredient in holding furnace, temperature is improved to 730~765 DEG C in furnace, should not be higher than
765 DEG C, increase the abundant melting that temperature is conducive to other alloy materials.
4, it refines
Aluminum alloy materials are agitated in holding furnace, sufficiently after melting, mixing, are blown into 13.8kg refining by high pure nitrogen
Agent (42%NaCl+50%KCl+4%Na+4%Na3AlF6) and is moved in bottom to heat preservation furnace bottom, make gas and
Field trash uniformly floats in aluminum alloy melt surface, skims after 18 minutes.
5, constituent analysis and standing heat preservation
It takes the aluminum alloy melt after skimming quickly to be analyzed, after meeting the requirements, aluminium alloy liquid can be put after standing 30 minutes
It casts, undesirable timely carry out composition adjustment.
Two, casting bar is poured
1, holding furnace mixing aluminium alloy melt flows into casting machine by ceramic filter plate and is cast, and forms cast bar.Pour into knot
Mixing temperature of aluminum liquid in crystalline substance wheel is maintained between 725~735 DEG C, and molten aluminum must keep maximum stabilization, is fluctuated up and down
No more than 15mm, water has been adjusted according to cast bar temperature, has guaranteed cast bar temperature between 480~510 DEG C.
2, rolling bar temperature is 320 DEG C or so.
3, casting machine voltage is 70V-100V；Rolling mill speed is 6.5-9.5m/min, and milling train electric current is 210-290A.
Three, crash handling
Aluminium condensation material at 290~360 DEG C, carry out 12h ageing treatment after, taken out from furnace, natural cooling for 24 hours after, obtain
Stability aluminum-alloy conductor material.
By above-mentioned obtained aluminum alloy materials, according to mass percent meter, including following component: 1.0% Fe,
0.4% Cu, 0.45% RE, 0.03% Y, 0.006% B, 0.8% Mn, 0.04% Mg, 0.009% Zn,
0.022% Si, 0.011% Ca, 0.00021% Ti, 0.0041% Cr, surplus Al.
By above-mentioned, the content of the single impurity element of impurity is 0-0.03%, and the total content of impurity is 0-0.1%.
The performance that this example prepares aluminum for electric engineering alloy material is shown in Table 1.
Embodiment 2
One, melting
1, furnace cupola and holding furnace melting material selection
Aluminium ingot: 6010kg (Si:0.09%, Fe:0.12%, Cu:0.006%, Mg:0.02%), ferroaluminium:
208.6kg (Fe content: 23%), rare earth aluminium alloy: 128.6kg (RE content: 11%), boron aluminium alloy: 20.8kg (B content:
2.8%), albronze: 41.6kg (Cu content: 53.5%), yttrium aluminium alloy: 5.6kg (Y content: 9.6%), aluflex:
305.4kg (Mn content: 9.8%), magnesium alloy: 5.6kg (Mg content: 9.8%), refining agent: 13.8kg (42%NaCl+
50%KCl+4%Na+4%Na3AlF6)。
2, it feeds
2.1, which are added aluminium ingot, albronze, ferroaluminium by the collocation of above-mentioned weight in charger, send to furnace cupola, adds
Temperature 700~740 DEG C sufficiently melt after, wait flow into holding furnace, other aluminum alloy materials are added in holding furnace, to guarantee material
The abundant fusion of material is uniform.
When 2.2 aluminium alloy liquid are filled with thermal insulation furnace body volume about 40%, 1/3 amount of aluminum alloy materials is added, to aluminium alloy
When liquid is filled with thermal insulation furnace body volume about 70%, 2/3 amount of aluminum alloy materials is added, all flows into holding furnace to aluminium alloy liquid
In, it is added the surplus of aluminum alloy materials, it should position distribution be uniform as far as possible in furnace when launching aluminum alloy materials.Aluminum alloy materials
Primary at interval of being stirred after twenty minutes after investment, stirring 5 minutes, are allowed to alloying component and are sufficiently mixed uniformly, and have every time
Effect carries out rare earth and borax treatment.
3, temperature controls
Other alloy materials are added by above-mentioned ingredient in holding furnace, temperature is improved to 730~765 DEG C in furnace, should not be higher than
765 DEG C, increase the abundant melting that temperature is conducive to other alloy materials.
4, it refines
Aluminum alloy materials are agitated in holding furnace, sufficiently after melting, mixing, are blown into 13.8kg refining by high pure nitrogen
Agent (42%NaCl+50%KCl+4%Na+4%Na3AlF6) furnace bottom is extremely kept the temperature, and moved in bottom, make gas and folder
Sundries uniformly floats in aluminum alloy melt surface, skims after 18 minutes.
5, constituent analysis and standing heat preservation
It takes the aluminum alloy melt after skimming quickly to be analyzed, after meeting the requirements, aluminium alloy liquid can be put after standing 30 minutes
It casts, undesirable timely carry out composition adjustment.
Two, casting bar is poured
1, holding furnace mixing aluminium alloy melt flows into casting machine by ceramic filter plate and is cast, and forms cast bar.Pour into knot
Mixing temperature of aluminum liquid in crystalline substance wheel is maintained between 725~735 DEG C, and molten aluminum must keep maximum stabilization, is fluctuated up and down
No more than 15mm, water has been adjusted according to cast bar temperature, has guaranteed cast bar temperature between 480~510 DEG C.
2, rolling bar temperature is 320 DEG C or so.
3, casting machine voltage is 70V-100V；Rolling mill speed is 6.5-9.5m/min, and milling train electric current is 210-290A.
Three, crash handling
Aluminium condensation material at 270~340 DEG C, carry out 10h ageing treatment after, taken out from furnace, natural cooling for 24 hours after, obtain
Stability aluminum-alloy conductor material.
By above-mentioned obtained aluminum alloy materials, according to mass percent meter, including following component: 0.82% Fe,
0.34% Cu, 0.21% RE, 0.008% Y, 0.007% B, 0.44% Mn, 0.026% Mg, 0.005%
Zn, 0.030% Si, 0.019% Ga, 0.00026% Ti, 0.0047% Cr, surplus Al.
By above-mentioned, the content of the single impurity element of impurity is 0-0.03%, and the total content of impurity is 0-0.1%.
The performance that this example prepares aluminum for electric engineering alloy material is shown in Table 1.
Embodiment 3
One, melting
1, furnace cupola and holding furnace melting material selection
Aluminium ingot: 6200kg (Si:0.08%, Fe:0.12%, Cu:0.0035%, Mg:0.01%), ferroaluminium:
24.8kg (Fe content: 21.0%), rare earth aluminium alloy: 12.8kg (RE content: 10%), boron aluminium alloy: 2.6kg (B content:
2.8%), albronze: 9.6kg (Cu content: 52.5%), yttrium aluminium alloy: 1.5kg (Y content: 9.6%), aluflex:
6.8kg (Mn content: 10.5%), magnesium alloy: 2.6kg (Mg content: 9.5%), refining agent: 14.3kg (42%NaCl+
50%KCl+4%Na+4%Na3AlF6).
2, it feeds
2.1, which are added aluminium ingot, albronze, ferroaluminium by the collocation of above-mentioned weight in charger, send to furnace cupola, adds
Temperature 700~740 DEG C sufficiently melt after, wait flow into holding furnace, other aluminum alloy materials are added in holding furnace, to guarantee material
The abundant fusion of material is uniform.
When 2.2 aluminium alloy liquid are filled with thermal insulation furnace body volume about 40%, 1/3 amount of aluminum alloy materials is added, to aluminium alloy
When liquid is filled with thermal insulation furnace body volume about 70%, 2/3 amount of aluminum alloy materials is added, all flows into holding furnace to aluminium alloy liquid
In, it is added the surplus of aluminum alloy materials, it should position distribution be uniform as far as possible in furnace when launching aluminum alloy materials.Aluminum alloy materials
Primary at interval of being stirred after twenty minutes after investment, stirring 5 minutes, are allowed to alloying component and are sufficiently mixed uniformly, and have every time
Effect carries out rare earth and borax treatment.
3, temperature controls
Other alloy materials are added by above-mentioned ingredient in holding furnace, temperature is improved to 730~765 DEG C in furnace, should not be higher than
765 DEG C, increase the abundant melting that temperature is conducive to other alloy materials.
4, it refines
Aluminum alloy materials are agitated in holding furnace, sufficiently after melting, mixing, are blown into 13.8kg refining by high pure nitrogen
Agent (42%NaCl+50%KCl+4%Na+4%Na3AlF6) and is moved in bottom to heat preservation furnace bottom, make gas and
Field trash uniformly floats in aluminum alloy melt surface, skims after 18 minutes.
5, constituent analysis and standing heat preservation
It takes the aluminum alloy melt after skimming quickly to be analyzed, after meeting the requirements, aluminium alloy liquid can be put after standing 30 minutes
It casts, undesirable timely carry out composition adjustment.
Two, casting bar is poured
1, holding furnace mixing aluminium alloy melt flows into casting machine by ceramic filter plate and is cast, and forms cast bar.Pour into knot
Mixing temperature of aluminum liquid in crystalline substance wheel is maintained between 725~735 DEG C, and molten aluminum must keep maximum stabilization, is fluctuated up and down
No more than 15mm, water has been adjusted according to cast bar temperature, has guaranteed cast bar temperature between 480~510 DEG C.
2, rolling bar temperature is 320 DEG C or so.
3, casting machine voltage is 70V-100V；Rolling mill speed is 6.5-9.5m/min, and milling train electric current is 210-290A.
Three, at failure
Aluminium condensation material after carrying out 6h ageing treatment, takes out at 260~300 DEG C from furnace, natural cooling for 24 hours after, obtain steady
Qualitative aluminum-alloy conductor material.
By above-mentioned obtained aluminum alloy materials, according to mass percent meter, including following component: 0.2% Fe,
0.08% Cu, 0.02% RE, 0.002% Y, 0.0006% B, 0.01% Mn, 0.01% Mg, 0.0065%
Zn, 0.032% Si, 0.02% Ca, 0.00028% Ti, 0.0051% Cr, surplus Al.
By above-mentioned, the content of the single impurity element of impurity is 0-0.03%, and the total content of impurity is 0-0.1%.
The performance that this example prepares aluminum for electric engineering alloy material is shown in Table 1.
Embodiment 4
One, melting
1, furnace cupola and holding furnace melting material selection
Aluminium ingot: 6230kg (Si:0.1%, Fe:0.11%, Cu:0.0035%, Mg:0.01%), ferroaluminium:
(Fe content: 19.5%), rare earth aluminium alloy: (RE content: 11.5%), boron aluminium alloy: (B contains 11.4kg 60.2kg 115.6kg
, albronze amount: 3.5%): (Cu content: 50.5%), yttrium aluminium alloy: (Y content: 9.2%), manganese aluminium closes 3.8kg 14.8kg
Gold: 126.8kg (Mn content: 9.5%), magnesium alloy: 3.0kg (Mg content: 9.5%), refining agent: 14.3kg (42%NaCl
+ 50%KCl+4%Na+4%Na3AlF6)。
2, it feeds
2.1, which are added aluminium ingot, albronze, ferroaluminium by the collocation of above-mentioned weight in charger, send to furnace cupola, adds
Temperature 700~740 DEG C sufficiently melt after, wait flow into holding furnace, other aluminum alloy materials are added in holding furnace, to guarantee material
The abundant fusion of material is uniform.
When 2.2 aluminium alloy liquid are filled with thermal insulation furnace body volume about 40%, 1/3 amount of aluminum alloy materials is added, to aluminium alloy
When liquid is filled with thermal insulation furnace body volume about 70%, 2/3 amount of aluminum alloy materials is added, all flows into holding furnace to aluminium alloy liquid
In, it is added the surplus of aluminum alloy materials, it should position distribution be uniform as far as possible in furnace when launching aluminum alloy materials.Aluminum alloy materials
Primary at interval of being stirred after twenty minutes after investment, stirring 5 minutes, are allowed to alloying component and are sufficiently mixed uniformly, and have every time
Effect carries out rare earth and borax treatment.
3, temperature controls
Other alloy materials are added by above-mentioned ingredient in holding furnace, temperature is improved to 730~765 DEG C in furnace, should not be higher than
765 DEG C, increase the abundant melting that temperature is conducive to other alloy materials.
4, it refines
Aluminum alloy materials are agitated in holding furnace, sufficiently after melting, mixing, are blown into 13.8kg refining by high pure nitrogen
Agent (42%NaCl+50%KCl+4%Na+4%Na3AlF6) furnace bottom is extremely kept the temperature, and moved in bottom, make gas and folder
Sundries uniformly floats in aluminum alloy melt surface, skims after 18 minutes.
5, constituent analysis and standing heat preservation
It takes the aluminum alloy melt after skimming quickly to be analyzed, after meeting the requirements, aluminium alloy liquid can be put after standing 30 minutes
It casts, undesirable timely carry out composition adjustment.
Two, casting bar is poured
1 holding furnace mixing aluminium alloy melt flows into casting machine by ceramic filter plate and is cast, and forms cast bar.Pour into crystallization
Mixing temperature of aluminum liquid in wheel is maintained between 725~735 DEG C, and molten aluminum must keep maximum stabilization, is fluctuated up and down not
More than 15mm, water has been adjusted according to cast bar temperature, has guaranteed cast bar temperature between 480~510 DEG C.
2, rolling bar temperature is 320 DEG C or so.
3, casting machine voltage is 70V-100V；Rolling mill speed is 6.5-9.5m/min, and milling train electric current is 210-290A.
Three, crash handling
Aluminium condensation material after carrying out 7h ageing treatment, takes out at 260~310 DEG C from furnace, natural cooling for 24 hours after, obtain steady
Qualitative aluminum-alloy conductor material.
By above-mentioned obtained aluminum alloy materials, according to mass percent meter, including following component: 0.45% Fe,
0.12% Cu, 0.11% RE, 0.005% Y, 0.005% B, 0.18% Mn, 0.014% Mg, 0.006%
Zn, 0.031% Si, 0.019% Ga, 0.00027% Ti, 0.0049% Cr, surplus Al.
By above-mentioned, the content of the single impurity element of impurity is 0-0.03%, and the total content of impurity is 0-0.1%.
The performance that this example prepares aluminum for electric engineering alloy material is shown in Table 1.
Embodiment 5
One, melting
1, furnace cupola and holding furnace melting material selection
Aluminium ingot: 6245kg (Si:0.1%, Fe:0.10%, Cu:0.006%, Mg:0.02%), ferroaluminium: 174.7kg
(Fe content: 22.5%), rare earth aluminium alloy: 110.8kg (RE content: 9.6%), boron aluminium alloy: 19.8kg (B content:
3.5%), albronze: 38.5kg (Cu content: 50.5%), yttrium aluminium alloy: 5.6kg (Y content: 9.2%), aluflex:
445.8kg (Mn content: 9.5%), magnesium alloy: 9.2kg (Mg content: 10.5%), refining agent: 14.4kg (42%NaCl+
50%KCl+4%Na+4%Na3AlF6)。
2, it feeds
2.1, which are added aluminium ingot, albronze, ferroaluminium by the collocation of above-mentioned weight in charger, send to furnace cupola, adds
Temperature 700~740 DEG C sufficiently melt after, wait flow into holding furnace, other aluminum alloy materials are added in holding furnace, to guarantee material
The abundant fusion of material is uniform.
When 2.2 aluminium alloy liquid are filled with thermal insulation furnace body volume about 40%, 1/3 amount of aluminum alloy materials is added, to aluminium alloy
When liquid is filled with thermal insulation furnace body volume about 70%, 2/3 amount of aluminum alloy materials is added, all flows into holding furnace to aluminium alloy liquid
In, it is added the surplus of aluminum alloy materials, it should position distribution be uniform as far as possible in furnace when launching aluminum alloy materials.Aluminum alloy materials
Primary at interval of being stirred after twenty minutes after investment, stirring 5 minutes, are allowed to alloying component and are sufficiently mixed uniformly, and have every time
Effect carries out rare earth and borax treatment.
3, temperature controls
Other alloy materials are added by above-mentioned ingredient in holding furnace, temperature is improved to 730~765 DEG C in furnace, should not be higher than
765 DEG C, increase the abundant melting that temperature is conducive to other alloy materials.
4, it refines
Aluminum alloy materials are agitated in holding furnace, sufficiently after melting, mixing, are blown into 13.8kg refining by high pure nitrogen
Agent (42%NaCl+50%KCl+4%Na+4%Na3AlF6) furnace bottom is extremely kept the temperature, and moved in bottom, make gas and folder
Sundries uniformly floats in aluminum alloy melt surface, skims after 18 minutes.
5, constituent analysis and standing heat preservation
It takes the aluminum alloy melt after skimming quickly to be analyzed, after meeting the requirements, aluminium alloy liquid can be put after standing 30 minutes
It casts, undesirable timely carry out composition adjustment.
Two, casting bar is poured
1, holding furnace mixing aluminium alloy melt flows into casting machine by ceramic filter plate and is cast, and forms cast bar.Pour into knot
Mixing temperature of aluminum liquid in crystalline substance wheel is maintained between 725~735 DEG C, and molten aluminum must keep maximum stabilization, is fluctuated up and down
No more than 15mm, water has been adjusted according to cast bar temperature, has guaranteed cast bar temperature between 480~510 DEG C.
2, rolling bar temperature is 320 DEG C or so.
3, casting machine voltage is 70V-100V；Rolling mill speed is 6.5-9.5m/min, and milling train electric current is 210-290A.
Three, crash handling
Aluminium condensation material after carrying out 8h ageing treatment, takes out at 260~320 DEG C from furnace, natural cooling for 24 hours after, obtain steady
Qualitative aluminum-alloy conductor material.
By above-mentioned obtained aluminum alloy materials, according to mass percent meter, including following component: 0.65% Fe,
0.28% Cu, 0.15% RE, 0.007% Y, 0.006% B, 0.6% Mn, 0.031% Mg, 0.004%
Zn, 0.029% Si, 0.018% Ga, 0.00022% Ti, 0.0045% Cr, surplus Al.
By above-mentioned, the content of the single impurity element of impurity is 0-0.03%, and the total content of impurity is 0-0.1%.
The performance that this example prepares aluminum for electric engineering alloy material is shown in Table 1.
According to the aluminum alloy materials that Examples 1 to 5 rolls, these aluminum alloy materials are tested, main performance index
It is shown in Table 1.
Table 1
It can be seen from Table 1 that aluminum alloy materials provided by the invention and preparation method, refer to the comprehensive performance of aluminium alloy
Biggish promotion is indicated, tensile strength with higher is preferable to extend, and conductivity is high, and impact is strong, resistance to compression creep, creep
Deflection is small.
In conclusion the aluminum alloy materials that technical solution of the present invention provides are particularly well suited to the conductor aluminium alloy of cable
Line improves the comprehensive performance of aluminium alloy wire, meets requirement of the conductor to comprehensive performance of cable, specific requirement is with reference to " electricity
The conductor (GB/T 3956-2008/IEC 60228:2004) of cable ", common aluminum alloy line is especially met to the 5th kind, the 6th
The requirement that the more demanding tensile strength of kind conductor, elongation, conductivity, creep-resistant property, impact resistance are unable to satisfy.
Claims (11)
1. aluminum for electric engineering alloy conductor material, it is characterised in that according to mass percent meter, including following components: 0.2~1.0%
Fe, 0.08~0.4% Cu, 0.02~0.45% RE, 0.002~0.03% Y, 0.001~0.05% B, 0.01
~0.8% Mn, 0.01~0.04% Mg, 0.04% Zn, 0.01~0.10% Si, surplus is for Al and inevitably
Impurity.
2. aluminum for electric engineering alloy conductor material according to claim 1, it is characterised in that: by mass percentage, described
The content of Y is 0.004~0.03% in aluminum alloy materials.
3. aluminum for electric engineering alloy conductor material according to claim 1, it is characterised in that: by mass percentage, described
The content of B is 0.001~0.035% in aluminum alloy materials.
4. aluminum for electric engineering alloy conductor material according to claim 1-3, it is characterised in that: further include Ga, press
Mass percent meter, Ga is less than 0.02%.
5. aluminum for electric engineering alloy conductor material according to claim 1-3, it is characterised in that: by mass percentage
Meter, the content of the single impurity element of the inevitable impurity are 0~0.03%, the total content of impurity is 0~
0.1%.
6. preparing the preparation method of aluminum for electric engineering alloy conductor material as described in any one in claim 1-5, it is characterised in that
Include the following steps:
1) melting: after by mass percentage being melted aluminium ingot heating, Fe, Cu, Y, RE, Mn, Mg, B aluminium alloy is added, adopts
It pours refining agent to furnace bottom with high pressure nitrogen to refine, through rare earth, borax treatment, after stirring is skimmed, by obtaining melt after standing
Aluminium alloy；
2) casting: holding furnace mixing aluminium alloy melt flows into casting machine by ceramic filter plate and is cast, and cast bar is formed, through rolling
Machine is rolled into design size Aluminum conductor conductor material；
3) ageing treatment: aluminum for electric engineering closes conductor at 240~390 DEG C, after carrying out 2-14h ageing treatment, takes out from furnace, natural
After cooling for 24 hours, stability aluminum-alloy conductor material is obtained.
7. the preparation method of aluminum for electric engineering alloy conductor material according to claim 6, which is characterized in that in step 1)
In, Fe, Cu, Y, RE, Mn, Mg, B are added in the form of aluminium intermediate alloy, and RE refers mainly to the terres rares containing cerium (Ce).
8. the preparation method of Rare earth aluminum alloy conductor material according to claim 7, which is characterized in that in step 1),
The intermediate alloy of the addition, iron-content is 19~23% in ferroaluminium, and copper content is 48~55% in albronze, rare earth
Content of rare earth is 9.5~12.0% in aluminium alloy, and yttrium content is 8~10% in yttrium aluminium alloy, and boron Boron in Aluminium Alloy content is 2.5
~3.5%, it containing manganese, magnesium is 9~11% in manganese, magnesium alloy.
9. the preparation method of aluminum for electric engineering alloy conductor material according to claim 6, which is characterized in that in step 1)
In, aluminium ingot, albronze, ferroaluminium are first heated to 700~740 DEG C in furnace cupola, until flowing into heat preservation after being completely melt
Furnace is added Y, RE, Mn, Mg, B aluminium alloy, after mixing evenly, is blown into refining agent, is refined, degasification, removed the gred after 18min,
After 730~765 DEG C of standing heat preservation 30min, melt aluminium alloy is obtained.
10. the preparation method of aluminum for electric engineering alloy conductor material according to claim 6, which is characterized in that in step 1)
In, the refining agent is 42%NaCl+50%KCl+4%Na+4%Na3AlF6, based on villaumite and villiaumite.
11. the preparation method of aluminum for electric engineering alloy conductor material according to claim 6, which is characterized in that in step 2)
In, the casting, casting ladle temperature is 725~735 DEG C when casting, and the cast bar temperature of generation is 480~510 DEG C, rolls bar temperature
It is 320 DEG C or so；Casting machine voltage is 70V-100V, and rolling mill speed is 6.5~9.5m/min, and milling train electric current is 210-290A.
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| CN111424198A (en) * | 2020-04-09 | 2020-07-17 | 北京国网弘泰科技有限公司 | Corrosion-resistant aluminum alloy grounding material and manufacturing method thereof |
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| JP2010163674A (en) * | 2009-01-19 | 2010-07-29 | Furukawa-Sky Aluminum Corp | Aluminum alloy brazing sheet having excellent strength and corrosion resistance |
| CN104946936A (en) * | 2015-05-29 | 2015-09-30 | 国网智能电网研究院 | High-conductivity rare earth duralumin monofilament material for overhead conductors |
| CN105316535A (en) * | 2015-01-31 | 2016-02-10 | 安徽华纳合金材料科技有限公司 | Copper-containing ferro-aluminum alloy wire and fabrication method thereof |
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| JP2010163674A (en) * | 2009-01-19 | 2010-07-29 | Furukawa-Sky Aluminum Corp | Aluminum alloy brazing sheet having excellent strength and corrosion resistance |
| CN105316535A (en) * | 2015-01-31 | 2016-02-10 | 安徽华纳合金材料科技有限公司 | Copper-containing ferro-aluminum alloy wire and fabrication method thereof |
| CN104946936A (en) * | 2015-05-29 | 2015-09-30 | 国网智能电网研究院 | High-conductivity rare earth duralumin monofilament material for overhead conductors |
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