CN103205614A - Novel 6063 aluminum alloy material and its production technology - Google Patents
Novel 6063 aluminum alloy material and its production technology Download PDFInfo
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Abstract
The invention discloses a novel 6063 aluminum alloy material. Rare earth elements are added into the original 6063 aluminum alloy. The novel 6063 aluminum alloy material comprises, based on the weight percentage,0.36%- 0.4% of Si, 0.48% - 0.52% of Mg, 0 -0.35% of Fe, 0 -0.1% of Cu, 0 - 0.05% of Mn, 0 - 0.05% of Cr, 0 - 0.05% of Zn, 0 - 0.05% of Ti, 0.18%-0.22% rare earth elements, 0-0.1% of the remaining impurities and the balance of Al. According to the invention, the content of Mg and Si is controlled within a narrow range. At the same time, cerium-based mixed rare earth elements and alloying element boron are added, which keeps alloy material high strength and high electrical and thermal conductivity; improves machining property and plastic extrusion; and improves production efficiency.
Description
Technical field
The present invention relates to a kind of novel 6063 aluminum alloy materials, belong to technical field of nonferrous metal processing.
Background technology
What 6063 aluminium alloys were used in fields such as building, decoration, automobile, aviation, electronics widens, and strength property, corrosion resistant performance, the heat-tinting performance of new modified wrought aluminium alloy had higher requirement.Owing to a large amount of existence of hard phase in the part aluminium alloy make machining property poor, squeeze is bigger, and mould wears away that the big life-span is lower, and extrusion speed is slow, and production efficiency is low, the energy consumption height.For some thin-wall complicated section bar, especially flakiness ratios greater than 100 shape asymmetry and the big extruded section of different in nature degree, the well moulding at all of common 6063 alloys, in order to satisfy the demand in market, this just requires involutory gold to carry out composition to improve.
In recent years, the application of rare earth element in 6063 alloys causes widely to be paid close attention to, and domestic research in this field enlivens more than external.Abroad to adopting the research of master alloy grain-refining agent, as the structure property of 6063 aluminium alloys of Al-Ti or Al-Ti-B refinement, but few to 6063 aluminium alloy microtextures and the performance study of RE refinement.And in 5 to 10 years from now on, the supply and demand in China's building, industry, national defence aluminium section bar market are with steady growth, throughput increase and the growth of requirement capability with in a basic balance, and have 80% in the architectural shape, have 50% in the industry profile, the national defence section bar has 20% to be 6063 and the new modified wrought aluminium alloy section bar of 6063D.Because it is higher that present China builds 6063 aluminium profile product production costs, quality product and Technology have a long way to go, therefore the section bar of China mostly concentrates on low-end product, and 6063 aluminium section bars are difficult to produce the section bar of section material section complexity, makes the narrow application range of product.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of control Mg, Si content and control one than close limit within, increased mixed rare-earth elements and alloying element boron based on cerium simultaneously, made alloy material keep high strength to possess the electric-conductivity heat-conductivity high performance simultaneously; Can improve machining property, plasticity extruding property, improve low novel 6063 aluminum alloy materials of production efficiency.
The objective of the invention is to be achieved through the following technical solutions:
6063 alloying constituents that meet national standard are: Si:0.2～0.6%, Mg:0.45～09%, Fe≤0.35%, Cu≤0.1%, Mn≤0.1%, Zn≤0.1%, Ti≤0.1%, Cr≤0.1%, every kind of content of other compositions≤0.05%, other composition total content≤0.15%, Al: surplus, the weight percent sum of each component is 100%.
A kind of novel 6063 aluminum alloy materials of the present invention, in former 6063 aluminium alloys, add rare earth element, the composition of novel 6063 aluminium alloys and weight percent are: Si:0.36%～0.4%, Mg:0.48%～0.52%, Fe:0～0.35%, Cu:0～0.1%, Mn:0～0.05%, Cr:0～0.05%, Zn:0～0.05%, Ti:0～0.05%, rare earth element: all the other impurity 0.18%～0.22%: 0～0.1%, Al: surplus, each component percentages sum is 100%.
Described rare earth element comprises La and Ce, and its weight percent is: La is 41.5%, Ce is 58.5%.
A kind of technological process of production of novel 6063 aluminum alloy materials may further comprise the steps:
S1: batching: select for use 99.7% commercial-purity aluminium, Al-rare earth intermediate alloy, industrial magnesium ingot and aluminium silicon intermediate alloy ingot as the furnace charge starting material, and selected insulating covering agent, refining agent and coating are as subsidiary material;
The raw-material component of each furnace charge and weight percent are respectively: major impurity element and per-cent thereof are in the commercial-purity aluminium (99.7%): Ti:0.003%, B:0.0005%, Fe:0.154%, Si:0.109%, Cu:0.002%, V:0.102%, C:0.001%, Al: surplus;
The moiety of Al-rare earth intermediate alloy and weight percent are: La:5.3%, Ce:2.7%, Pr:1.0%, Nd:0.9%, impurity≤0.1%, Al: surplus;
Industry magnesium ingot moiety and weight percent are: Fe:0.05%, Si:0.03%, Cu:0.02%, Al:0.05%, Cl:0.005%, Mn:0.06%, impurity: Mg 0.2%: surplus;
Composition and the weight percent of aluminium silicon intermediate alloy ingot are: Al:75%, Si:23%, all the other impurity: 2%;
According to the batching total amount, food ingredient on request calculates and adds each raw-material usage quantity;
S2: smelting and pouring: skim earlier before melting and the cast, smelting and pouring comprises following substep:
S21: stirring tool cleaned out to be coated with to coat be preheated to 200～300 ℃, after metal die is preheating to 200～300 ℃, swabbing be preheating to again 200～300 ℃ to be cast;
S22: melting: 2/3 aluminium ingot of packing in the smelting furnace, treat melting of metal after, add aluminium silicon intermediate alloy ingot and residue aluminium ingot, the intensification melting batch when waiting furnace charge to be heated to softening staying, sprinkles insulating covering agent protection melt, continues heating; When the furnace charge fusing is level, suitably stir melt and make the temperature uniformity, also be conducive to simultaneously accelerate fusing, when temperature reaches 680 ℃, skim, and will be preheating to 200～300 ℃ industrial magnesium ingot with bell jar and be pressed in the crucible, and slowly turn round and move, time is that 3～5min is until dissolving fully, insulation 5min continues to heat up and add insulating covering agent, when being warmed up to 720 ℃ then, skim, and with bell jar the Al-rare earth intermediate alloy is pressed in the crucible, and slow pitch of the laps or mobilely dissolve fully up to it, add insulating covering agent simultaneously, and carry out slight stirring and make it dissolving evenly, insulation 15min;
S23: cast: with skimming behind the suspender taking-up crucible, simultaneously that preheating is good metal die takes out, filter screen is supportted, keeping the distance on casting ladle and funnel top is 30～35cm, keeping enough pouring pressures, the duration of pouring in 1min in, teeming temperature is 720 ℃～750 ℃, take out ingot casting every 5～10min clock, carry out quality inspection.
The composition of the insulating covering agent of selecting for use among the described step S2 and weight percent are: NaCl:39%, KCl:50%, Na
3AlF
6: CaF 6.6%,
2: 4.4%.
The invention has the advantages that:
1, through check, tensile strength of the present invention reaches that 212MPa, disproportional elongation stress reach 189MPa, elongation reaches 9.0%, all is higher than tensile strength 〉=160MPa, the disproportional elongation stress 〉=110MPa of national regulation, the standard of elongation 〉=8%;
Control Mg, Si content and control one than close limit within, increased mixed rare-earth elements and alloying element boron based on cerium simultaneously, adopt complete solid solution simultaneously, make alloy material maintenance high strength possess the electric-conductivity heat-conductivity high performance simultaneously; Simultaneously, 6063 aluminium alloys for Ti, B, RE refinement, because RE and Mg and Si reaction have formed the Al-Si-Mg-RE compound, a certain amount of Si and Mg have been consumed, the strengthening phase quantity that Mg and Si reaction is generated reduces, thereby make alloy rigidity be lower than equal Mg, improve machining property, it is low to enhance productivity;
3. the plasticity extrusion performance significantly improves, and wherein extrusion speed improves 30%, and the grinding tool life-span improves 25%, and section bar extrusion temperature of the same race reduces by 20～30 ℃, has reduced production energy consumption, can produce the section bar of section material section complexity, has widened the scope of application of 6 series alloys.
Embodiment
Further specify technical scheme of the present invention below in conjunction with specific embodiment, but the content that the present invention protects is not limited to the following stated.
Embodiment 1: a kind of novel 6063 aluminum alloy materials, in former 6063 aluminium alloys, add rare earth element, the composition of novel 6063 aluminium alloys and weight percent are: Si:0.36%, Mg:0.48%, Fe:0.3%, Cu:0.025%, Mn:0.025%, Cr:0.05%, Zn:0.05%, Ti:0.05%, rare earth element: all the other impurity 0.2%: Al 0.1%: surplus, each component percentages sum is 100%.
Described rare earth element comprises La and Ce, and its weight percent is: La is 41.5%, Ce is 58.5%.
A kind of technological process of production of novel 6063 aluminum alloy materials may further comprise the steps:
S1: batching: select for use 99.7% commercial-purity aluminium, Al-rare earth intermediate alloy, industrial magnesium ingot and aluminium silicon intermediate alloy ingot as the furnace charge starting material, and selected insulating covering agent, refining agent and coating are as subsidiary material;
The raw-material component of each furnace charge and weight percent are respectively: major impurity element and per-cent thereof are in the commercial-purity aluminium (99.7%): Ti:0.003%, B:0.0005%, Fe:0.154%, Si:0.109%, Cu:0.002%, V:0.102%, C:0.001%, Al: surplus;
The moiety of Al-rare earth intermediate alloy and weight percent are: La:5.3%, Ce:2.7%, Pr:1.0%, Nd:0.9%, impurity≤0.1%, Al: surplus;
Industry magnesium ingot moiety and weight percent are: Fe:0.05%, Si:0.03%, Cu:0.02%, Al:0.05%, Cl:0.005%, Mn:0.06%, impurity: Mg 0.2%: surplus;
Composition and the weight percent of aluminium silicon intermediate alloy ingot are: Al:75%, Si:23%, all the other impurity: 2%;
According to the batching total amount, food ingredient on request calculates and adds each raw-material usage quantity;
S2: smelting and pouring: skim earlier before melting and the cast, smelting and pouring comprises following substep:
S21: stirring tool cleaned out to be coated with to coat be preheated to 200～300 ℃, after metal die is preheating to 200～300 ℃, swabbing be preheating to again 200～300 ℃ to be cast;
S22: melting: 2/3 aluminium ingot of packing in the smelting furnace, treat melting of metal after, add aluminium silicon intermediate alloy ingot and residue aluminium ingot, the intensification melting batch when waiting furnace charge to be heated to softening staying, sprinkles insulating covering agent protection melt, continues heating; When the furnace charge fusing is level, suitably stir melt and make the temperature uniformity, also be conducive to simultaneously accelerate fusing, when temperature reaches 680 ℃, skim, and will be preheating to 200～300 ℃ industrial magnesium ingot with bell jar and be pressed in the crucible, and slowly turn round and move, time is that 3～5min is until dissolving fully, insulation 5min continues to heat up and add insulating covering agent, when being warmed up to 720 ℃ then, skim, and with bell jar the Al-rare earth intermediate alloy is pressed in the crucible, and slow pitch of the laps or mobilely dissolve fully up to it, add insulating covering agent simultaneously, and carry out slight stirring and make it dissolving evenly, insulation 15min;
S23: cast: with skimming behind the suspender taking-up crucible, simultaneously that preheating is good metal die takes out, filter screen is supportted, keeping the distance on casting ladle and funnel top is 30～35cm, keeping enough pouring pressures, the duration of pouring in 1min in, teeming temperature is 720 ℃～750 ℃, take out ingot casting every 5～10min clock, carry out quality inspection.
The composition of the insulating covering agent of selecting for use among the described step S2 and weight percent are: NaCl:39%, KCl:50%, Na
3AlF
6: CaF 6.6%,
2: 4.4%.
Embodiment 2: a kind of novel 6063 aluminum alloy materials, in former 6063 aluminium alloys, add rare earth element, the composition of novel 6063 aluminium alloys and weight percent are: Si:0.52%, Mg:0.4%, Fe:0.35%, Mn:0.05%, Zn:0.05%, rare earth element: Al 0.18%: surplus, each component percentages sum is 100%.
Described rare earth element comprises La and Ce, and its weight percent is: La is 41.5%, Ce is 58.5%.
A kind of technological process of production of novel 6063 aluminum alloy materials is identical with embodiment 1.
Embodiment 3: a kind of novel 6063 aluminum alloy materials, in former 6063 aluminium alloys, add rare earth element, the composition of novel 6063 aluminium alloys and weight percent are: Si:0.5%, Mg:0.38%, Cu:0.1%, Cr:0.05%, Ti:0.05%, rare earth element: all the other impurity 0.22%: Al 0.1%: surplus, each component percentages sum is 100%.
Described rare earth element comprises La and Ce, and its weight percent is: La is 41.5%, Ce is 58.5%.
A kind of technological process of production of novel 6063 aluminum alloy materials is identical with embodiment 1.
Claims (4)
1. novel 6063 aluminum alloy materials, it is characterized in that: in former 6063 aluminium alloys, add rare earth element, the composition of novel 6063 aluminium alloys and weight percent are: Si:0.36%～0.4%, Mg:0.48%～0.52%, Fe:0～0.35%, Cu:0～0.1%, Mn:0～0.05%, Cr:0～0.05%, Zn:0～0.05%, Ti:0～0.05%, rare earth element: all the other impurity 0.18%～0.22%: 0～0.1%, Al: surplus, each component percentages sum is 100%.
2. a kind of novel 6063 aluminum alloy materials according to claim 1, it is characterized in that: described rare earth element comprises La and Ce, its weight percent is: La is 41.5%, Ce is 58.5%.
3. the production technique of novel 6063 aluminum alloy materials as claimed in claim 1, it is characterized in that: it may further comprise the steps:
S1: batching: select for use 99.7% commercial-purity aluminium, Al-rare earth intermediate alloy, industrial magnesium ingot and aluminium silicon intermediate alloy ingot as the furnace charge starting material, and selected insulating covering agent, refining agent and coating are as subsidiary material;
The raw-material component of each furnace charge and weight percent are respectively: major impurity element and per-cent thereof are in the commercial-purity aluminium (99.7%): Ti:0.003%, B:0.0005%, Fe:0.154%, Si:0.109%, Cu:0.002%, V:0.102%, C:0.001%, Al: surplus;
The moiety of Al-rare earth intermediate alloy and weight percent are: La:5.3%, Ce:2.7%, Pr:1.0%, Nd:0.9%, impurity≤0.1%, Al: surplus;
Industry magnesium ingot moiety and weight percent are: Fe:0.05%, Si:0.03%, Cu:0.02%, Al:0.05%, Cl:0.005%, Mn:0.06%, impurity: Mg 0.2%: surplus;
Composition and the weight percent of aluminium silicon intermediate alloy ingot are: Al:75%, Si:23%, all the other impurity: 2%;
According to the batching total amount, food ingredient on request calculates and adds each raw-material usage quantity;
S2: smelting and pouring: skim earlier before melting and the cast, smelting and pouring comprises following substep:
S21: stirring tool cleaned out to be coated with to coat be preheated to 200～300 ℃, after metal die is preheating to 200～300 ℃, swabbing be preheating to again 200～300 ℃ to be cast;
S22: melting: 2/3 aluminium ingot of packing in the smelting furnace, treat melting of metal after, add aluminium silicon intermediate alloy ingot and residue aluminium ingot, the intensification melting batch when waiting furnace charge to be heated to softening staying, sprinkles insulating covering agent protection melt, continues heating; When the furnace charge fusing is level, suitably stir melt and make the temperature uniformity, also be conducive to simultaneously accelerate fusing, when temperature reaches 680 ℃, skim, and will be preheating to 200～300 ℃ industrial magnesium ingot with bell jar and be pressed in the crucible, and slowly turn round and move, time is that 3～5min is until dissolving fully, insulation 5min continues to heat up and add insulating covering agent, when being warmed up to 720 ℃ then, skim, and with bell jar the Al-rare earth intermediate alloy is pressed in the crucible, and slow pitch of the laps or mobilely dissolve fully up to it, add insulating covering agent simultaneously, and carry out slight stirring and make it dissolving evenly, insulation 15min;
S23: cast: with skimming behind the suspender taking-up crucible, simultaneously that preheating is good metal die takes out, filter screen is supportted, keeping the distance on casting ladle and funnel top is 30～35cm, keeping enough pouring pressures, the duration of pouring in 1min in, teeming temperature is 720 ℃～750 ℃, take out ingot casting every 5～10min clock, carry out quality inspection.
4. the production method of a kind of 6061 wrought aluminium alloies according to claim 3, it is characterized in that: the composition of the insulating covering agent of selecting for use among the described step S2 and weight percent are: NaCl:39%, KCl:50%, Na
3AlF
6: CaF 6.6%,
2: 4.4%.
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