CN102191414B - Production method of aluminum alloy cable strap material - Google Patents
Production method of aluminum alloy cable strap material Download PDFInfo
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- CN102191414B CN102191414B CN2011100921830A CN201110092183A CN102191414B CN 102191414 B CN102191414 B CN 102191414B CN 2011100921830 A CN2011100921830 A CN 2011100921830A CN 201110092183 A CN201110092183 A CN 201110092183A CN 102191414 B CN102191414 B CN 102191414B
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Abstract
The invention relates to an aluminum alloy cable strap material and a production method thereof. The aluminum alloy cable strap comprises the following components in percentage by weight: 0.60 to 0.80 percent of Si, 0.20 to 0.40 percent of Fe, less than or equal to 0.05 percent of Cu, less than or equal to 0.03 percent of Mn, less than or equal to 0.03 percent of Mg, 0.02 to 0.03 percent of Ti and the balance of Al and inevitable impurities. The production method comprises the following steps of: smelting, refining in a standing furnace, refining crystalline grains, online degassing, filtering, continuous casting rolling, cold rolling, foil rolling, slitting and annealing. The tensile strength of the aluminum alloy cable strap is 90 to 105MPa and the percentage elongation is more than or equal to 23 percent. When the aluminum alloy cable strap is compared with the traditional product, the tensile strength is reduced, the percentage elongation is improved and requirements of clients are met to a greater extent. The production process is simplified; annealing for one time is required in the production process; and the product with low tensile strength and high percentage elongation can be obtained without adding any process in the subsequent processing process. By the method, the production cost can be saved, and the production efficiency and the yield are improved. The method is easy to popularize and has obvious economic and social benefits.
Description
Technical field
The present invention relates to a kind of aluminum alloy materials, particularly relate to a kind of duraluminum cable band and working method thereof.
Background technology
The banded cable of domestic production at present mainly contains 1060,1145,8011 line aluminium alloy products, because the banded cable surface quality that 8011 line aluminium alloys are produced is good and unit elongation is higher, the trend that replaces the above two is gradually arranged.But the staple of 8011 line aluminium alloys is Si, Fe; And the general F e＞Si of content; Because the influence that the characteristic of Si, Fe and wherein inevitable impurity are caused; 8011 " O " state banded cable intensity of producing is hard partially, can not satisfy requirement of client (tensile strength 90 ~ 110MPa, unit elongation >=20%); And the cable product that goes out with common 8011 alloy production, intensity is generally 105 ~ 115MPa, unit elongation >=18%; As want to reduce again intensity; Need second annealing, perhaps improve annealing temperature and increase annealing time, careless slightlyly be prone to cause phenomenons such as the inner crystal grain of aluminium foil is thick, orange peel; Cause yield rate low, production cost significantly promotes.
Through retrieval; Application number is 200510031180.0 a kind of high-strength high-elongation ratio 6063 duraluminums of disclosure of the Invention and working method thereof, and its working method is: a. founding: batching shove charge → melt → stir and skim → cover → spray refining → skim and cover → leave standstill insulation → ingot casting; B. extruding and thermal treatment: homogenize → air cooling → ingot casting heating → extruding → water spray quenching → break and cut → cold bed cooling → stretching → aligning → artificial aging processing → finished product.Through detecting, the unit elongation and the intensity of this method aluminium alloy extrusions all improve to some extent, but the production cycle is longer, and energy consumption is higher, and the aluminum alloy plate materials quality that obtains is also undesirable.
Summary of the invention
The technical problem that the present invention will solve is: a kind of duraluminum cable band is provided, the working method of the duraluminum cable band that a kind of unit elongation is high, production cost is low also is provided.
Technical scheme of the present invention:
A kind of duraluminum cable carrying material is represented with weight percent, is Si 0.60 ~ 0.80%, Fe 0.20 ~ 0.40%, Cu≤0.05%, Mn≤0.03%, Mg≤0.03%, Ti 0.02 ~ 0.03% in the composition
, surplus is Al and unavoidable impurities, adds up to 100%.
A kind of working method of duraluminum cable band may further comprise the steps,
(1) melting: the aluminium ingot and the waste material that will meet claim 1 join in the flame reflection smelting furnace, and fusing also heats up, sampling when temperature reaches 750 ± 5 ℃; The adjustment composition; Skim then, refining, obtain aluminium alloy melt, melt temperature is controlled at 750 ± 5 ℃;
(2) leave standstill the stove refining: with the aluminium alloy melt metaideophone to leaving standstill the stove refining;
(3) grain refining: add al-ti-b refiner in the aluminium alloy melt after the alignment refining and carry out grain refining, making Ti content is 0.02 ~ 0.04% of aluminium alloy melt weight;
(4) online degasification: aluminium alloy melt is through degasification tank refining degasification;
(5) filter: aluminium alloy melt adopts ceramic filter to carry out filter cleaner through strumbox;
(6) continuous casting and rolling: aluminium alloy melt is become the strip of 6.5 ~ 7.5mm through the casting and rolling machine casting, through the adjustment template, shear, batch, shut out casting base volume;
(7) cold rolling: as the casting base to be rolled up the cold rolling of 5 ~ 6 passes of warp, be rolling to 0.5 ~ 0.7mm;
(8) paper tinsel rolls: the cable band plate base that is rolled into 0.15-0.25mm again through 3 ~ 4 passages;
(9) cut and anneal and cut according to customer requirements, annealing is warming up to 380 ~ 420 ℃ of insulation 8 ~ 10h, and furnace temperature is reduced to 340 ~ 380 ℃ then, insulation 8 ~ 10h.
It is said that to leave standstill the stove refining be to adopt N
2The refining degasification, refining time is no less than 20min, and temperature is controlled at 745 ± 5 ℃.
Feed argon gas to degasification tank during said online degasification and carry out degasification, the aluminium alloy melt temperature is controlled at 725 ± 5 ℃, requires the hydrogen content≤0.13ml of every 100g aluminium in the aluminium alloy melt after the degasification.
The precision of said ceramic filter is 35 ~ 40ppi, and filtration temperature is controlled at 715 ± 5 ℃.
Parameter is that roll gap 5.0 ~ 5.5mm, the casting head of district 45 ~ 55mm, preceding oven temperature, degree are that 690 ~ 710 ℃, casting speed are 800 ~ 1000mm/min during said continuous casting and rolling, and casting roller roughness is 0.7 ~ 1.0 μ m.
Said work roll crown when cold rolling is 0.05 ~ 0.08mm, and roughness is 0.35 ± 0.03 μ m, and ROLLING OIL oil temperature is 35-45 ℃.
The convexity of working roll was 0.03 ~ 0.05mm when said paper tinsel rolled, and roughness is 0.3 ± 0.03 μ m, and ROLLING OIL oil temperature is 45-55 ℃, and roll speed is 400-450m/min.
Positive beneficial effect of the present invention:
(1) the present invention particularly adjusts the content of F e, Si in the alloy through rationally adjusting the composition of former 8011 duraluminum cable bands, makes F e content less than Si content, and the performance of banded cable more meets actual requirement.The performance index of duraluminum cable band of the present invention are: tensile strength 90 ~ 105MPa, unit elongation >=23%, product of the present invention has reduced the tensile strength of banded cable, has improved unit elongation, has satisfied customer requirement to a greater degree.
(2) production technique of the present invention is simplified; Only need once annealing in the production process; Do not need second annealing, need not improve annealing temperature yet and increase annealing time, promptly in the following process process, do not increase any operation and promptly obtain the product that tensile strength is low, unit elongation is high.This method can save production cost, and enhances productivity and yield rate, is easy to promote, and has tangible economic and social benefit.
Embodiment
Embodiment 1, a kind of duraluminum cable band and working method thereof
1, product composition
2, working method
(1) the melting leftover bits and the remelted aluminum ingot that will meet above-mentioned requirements joins in the flame reverberatory furnace, and heat fused also fully stirs, and stirs 15min at every turn, and 20min stirs once more at interval, prevents the melt local superheating, skims then; Sampling during adjustment temperature to 750 ± 5 ℃ is noted during sampling melt is thoroughly stirred, and guarantees that composition is even.According to the on-the-spot sample analysis result; In smelting furnace, adjust in the alloying constituent ratio; The additive that is added during adjustment such as Fe agent, Al-Si ingot etc. must comply with the national standard requirements, and treat that composition leaves standstill after qualified to be not less than 30min, when measuring melt temperature; Thermocouple thermometer should be placed on the middle and lower part of aluminium alloy melt and measure, and melt temperature is controlled at 750 ± 5 ℃;
(2) leave standstill the stove refining with the aluminium alloy melt metaideophone to leaving standstill stove, adopt N after the neutralization of metaideophone process fills stove
2Refining degasification slagging-off, finer slowly moves along furnace bottom during refining, controls gas flow well, and it is excessive to avoid melt to roll, melt wave height≤50mm, refining time is 25min, temperature is controlled at 745 ± 5 ℃;
(3) the online adding al-ti-b refiner of grain refining carries out grain refining, makes Ti content reach 0.033% of aluminium alloy melt weight;
(4) online degasification aluminium alloy melt is through degasification tank; High-purity argon gas is passed through graphite rotator to the melt degasification; Require rotor speed normally steady, gas flow control is not excessive, and bubble is tiny evenly; Melt temperature is controlled at 725 ± 5 ℃, requires hydrogen content≤0.13ml/100gAl after the degasification;
(5) filter the ceramic filter slagging-off that the employing filtering accuracy is 35ppi, temperature is controlled at 715 ± 5 ℃;
(6) continuous casting and rolling casting parameter is that roll gap 5.3mm, casting head of district 48mm, preceding oven temperature, degree are that 695 ℃, casting speed are 900mm/min, and casting roller roughness is 0.9 μ m; Aluminium alloy melt is chewed through the casting and rolling machine casting and is flowed to two rotation and inner being connected with between the casting roller of recirculated water in opposite directions, in the casting district, realizes casting, rolling deformation, and the casting of liquid aluminium alloy melt is become the thick strip of 7.5mm; Again through adjusting template, shearing, batch, shut out casting base volume;
(7) cold rolling casting base twists on the cold-rolling mill and rolls, rolling through 5 ~ 6 passes, and the strip that 6.5 ~ 7.5mm is thick is rolled to 0.6 ~ 0.62mm (annotate: thickness 1.2-1.3mm is the side cut passage); In order to control the surface quality and the template of cold-reduced sheet well; Work roll crown 0.06mm, last supporting roll convexity 0.02mm, following supporting roll is a plain-barreled roll; Working roll roughness Ra:0.35 ± 0.03 μ m, the temperature control of ROLLING OIL oil is at 35-45 ℃; It is even to require the cold-reduced sheet surface not have the scuffing of wiping, cut, Liang Dao, thick difference;
(8) paper tinsel rolls rolling through 3 ~ 4 passages, is rolled into the banded cable of 0.15-0.25mm, for surface quality and the template that guarantees banded cable; Require work roll crown 0.04mm, supporting roll is a plain-barreled roll up and down, working roll roughness Ra:0.3 ± 0.03 μ m; The temperature control of ROLLING OIL oil is paid special attention to when the mill product passage at 45-55 ℃, guarantee that working roll does not have defectives such as scuffing, bright seal, sticking aluminium; Speed is unsuitable too high, guarantees that 400-450m/min is at the uniform velocity rolling, and adjustment air pressure is to guarantee that purging is clean; Do not allow residual greasy dirt to occur, in order to avoid cause annealing oil mark defective;
(9) cut and anneal and cut according to customer requirements, carry out finished products then: behind 250 ℃ of smoke evacuation 3h, insulation 8h is incubated 8h again when being warming up to 403 ℃ when furnace temperature is reduced to 360 ℃, obtains finished product.
The duraluminum cable band end properties index that obtains: tensile strength 95MPa, unit elongation 24%.
Embodiment 2, working method are with embodiment 1, and difference is:
1, product composition
2, working method is with embodiment 1 difference:
During continuous casting and rolling the aluminium alloy melt casting become the strip of 7.0mm; Roll gap is that 5.5mm, casting head of district 50mm, preceding oven temperature, degree are that 700 ℃, casting speed are 850mm/min, and casting roller roughness is 0.85 μ m;
Work roll crown is 0.07mm when cold rolling, and roughness is 0.35 μ m, and ROLLING OIL oil temperature is 40 ℃; Work roll crown was 0.05mm when paper tinsel rolled, and roughness is 0.3 μ m, and ROLLING OIL oil temperature is 50 ℃, and roll speed is 430m/min; At 390 ℃ of insulation 9h, furnace temperature is reduced to 370 ℃ then during annealing, and insulation 9h obtains finished product.
End properties index: tensile strength 96MPa, unit elongation 25%.
Embodiment 3, working method are with embodiment 1, and difference is the composition of product:
During continuous casting and rolling the aluminium alloy melt casting become the strip of 6.5mm; Roll gap is that 5.3mm, casting head of district 52mm, preceding oven temperature, degree are that 710 ℃, casting speed are 950mm/min, and casting roller roughness is 0.9 μ m;
Work roll crown is 0.05mm when cold rolling, and roughness is 0.35 ± 0.03 μ m, and ROLLING OIL oil temperature is 42 ℃; Work roll crown was 0.03mm when paper tinsel rolled, and roughness is 0.3 ± 0.03 μ m, and ROLLING OIL oil temperature is 52 ℃, and roll speed is 400m/min; At 400 ℃ of insulation 10h, furnace temperature is reduced to 350 ℃ then during annealing, and insulation 10h obtains finished product.
End properties index: tensile strength 93MPa, unit elongation 25.5%.
Embodiment 4, working method are with embodiment 1, and difference is the composition of product:
End properties index: tensile strength 98MPa, unit elongation 24.8%.
Embodiment 5, working method are with embodiment 1, and difference is the composition of product:
End properties index: tensile strength 101 MPa, unit elongation 24.0%.
Embodiment 6, working method are with embodiment 1, and difference is the composition of product:
End properties index: tensile strength 97MPa, unit elongation 24.5%.
Claims (7)
1. the working method of a duraluminum cable band, it is characterized in that: this method may further comprise the steps,
(1) melting: the aluminium ingot and the waste material that will meet the requirement of duraluminum cable band composition join in the flame reflection smelting furnace, and fusing also heats up, sampling when temperature reaches 750 ± 5 ℃; The adjustment composition; Skim then, refining, obtain aluminium alloy melt, melt temperature is controlled at 750 ± 5 ℃;
Said duraluminum cable band composition representes that with weight percent composition is Si 0.60 ~ 0.80%, Fe 0.20 ~ 0.40%, Cu≤0.05%, Mn≤0.03%, Mg≤0.03%, Ti 0.02 ~ 0.03%, and surplus is Al and unavoidable impurities, adds up to 100%;
(2) leave standstill the stove refining: with the aluminium alloy melt metaideophone to leaving standstill the stove refining;
(3) grain refining: add al-ti-b refiner in the aluminium alloy melt after the alignment refining and carry out grain refining, making Ti content is 0.02 ~ 0.04% of aluminium alloy melt weight;
(4) online degasification: aluminium alloy melt is through degasification tank refining degasification;
(5) filter: aluminium alloy melt adopts ceramic filter to carry out filter cleaner through strumbox;
(6) continuous casting and rolling: aluminium alloy melt is become the strip of 6.5 ~ 7.5mm through the casting and rolling machine casting, through the adjustment template, shear, batch, shut out casting base volume;
(7) cold rolling: as the casting base to be rolled up the cold rolling of 5 ~ 6 passes of warp, be rolling to 0.5 ~ 0.7mm;
(8) paper tinsel rolls: the cable band plate base that is rolled into 0.15-0.25mm again through 3 ~ 4 passages;
(9) cut and anneal and cut according to customer requirements, annealing is warming up to 380 ~ 420 ℃ of insulation 8 ~ 10h, and furnace temperature is reduced to 340 ~ 380 ℃ then, and insulation 8 ~ 10h obtains finished product.
2. working method according to claim 1 is characterized in that: said to leave standstill the stove refining be to adopt N
2The refining degasification, refining time is no less than 20min, and temperature is controlled at 745 ± 5 ℃.
3. working method according to claim 1 is characterized in that: feed argon gas to degasification tank during said online degasification and carry out degasification, the aluminium alloy melt temperature is controlled at 725 ± 5 ℃, requires the hydrogen content≤0.13ml of every 100g aluminium in the aluminium alloy melt after the degasification.
4. working method according to claim 1 is characterized in that: the precision of said ceramic filter is 35 ~ 40ppi, and filtration temperature is controlled at 715 ± 5 ℃.
5. working method according to claim 1; It is characterized in that: parameter is that roll gap 5.0 ~ 5.5mm, the casting head of district 45 ~ 55mm, preceding oven temperature, degree are that 690 ~ 710 ℃, casting speed are 800 ~ 1000mm/min during said continuous casting and rolling, and casting roller roughness is 0.7 ~ 1.0 μ m.
6. working method according to claim 1 is characterized in that: said work roll crown when cold rolling is 0.05 ~ 0.08mm, and roughness is 0.35 ± 0.03 μ m, and ROLLING OIL oil temperature is 35-45 ℃.
7. according to each described working method of claim 1-6, it is characterized in that: the convexity of working roll was 0.03 ~ 0.05mm when said paper tinsel rolled, and roughness is 0.3 ± 0.03 μ m, and ROLLING OIL oil temperature is 45-55 ℃, and roll speed is 400-450m/min.
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