CN102899532A - Aluminum alloy rod as well as preparation process and application of aluminum alloy rod - Google Patents
Aluminum alloy rod as well as preparation process and application of aluminum alloy rod Download PDFInfo
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- CN102899532A CN102899532A CN2012103733024A CN201210373302A CN102899532A CN 102899532 A CN102899532 A CN 102899532A CN 2012103733024 A CN2012103733024 A CN 2012103733024A CN 201210373302 A CN201210373302 A CN 201210373302A CN 102899532 A CN102899532 A CN 102899532A
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Abstract
The invention discloses an aluminum alloy rod as well as a preparation process and application of the aluminum alloy rod. The aluminum alloy comprises the following elements by weight percent: 1.05-1.15% of Mn, 0.35-0.45% of Fe, 0.08-0.13% of Cu, 0.08-0.15% of Si, 0.01-0.03% of Ti and the balance of Al and trace impurities. Through melting, casting, rolling and homogenizing, the tensile strength of the aluminum alloy rod is reduced from 165-185Mpa before homogenizing to 100-115 Mpa after homogenizing, the elongation of the aluminum alloy rod is improved from 14-18% before homogenizing to 28-35% after homogenizing, the resistivity of the aluminum alloy rod is reduced from 54-56n omega.m to 26-33n omega.m. The aluminum alloy rod meets the extrusion processing requirements of downstream products, can be prepared into aluminum alloy pipes, various liquid containers and other small load parts prepared by deep drawing, and can be further drawn into a wire rod which is used for preparing a rivet and a solder wire.
Description
Technical field
The present invention relates to technical field of nonferrous metal processing, especially relate to a kind of aluminium alloy pole stock and its manufacture craft and application thereof.
Background technology
Current, be accompanied by the development of electron trade and automobile industry, market is good to having plasticity, weldability is good, antirust function reaches well the liquid of good corrosion resistance, gas transmission pipeline demand increases day by day, at present, the domestic extrusion processing of generally adopting fine aluminium to carry out aluminum pipe, the tensile strength of pure aluminum tube and erosion resistance are all relatively poor, but adopt the compo pipe intensity not high (only being higher than general commercial-purity aluminium) of common aluminum alloy processing, purposes is not extensive on tubing, during the low load part (such as gasoline or grease conduits) of in being produced on liquid or gaseous media, working, if can replace the higher copper pipe of price with the good aluminum pipe of performance, then market outlook are quite wide.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of aluminium alloy pole stock, improve plasticity, weldability, the tensile strength of aluminium alloy pole stock, guarantee that simultaneously it possesses preferably antirust corrosion-proof.
For achieving the above object, the present invention by the following technical solutions:
Aluminium alloy pole stock of the present invention by weight percentage, contain Mn 1.05-1.15%, Fe 0.35-0.45%, Cu 0.08-0.13%, Si 0.08-0.15%, Ti 0.01-0.03%, surplus is Al and trace impurity, and tensile strength is that 100-115MPa, unit elongation are 28-35%, resistivity 26-33n Ω .m.
The present invention also provides the manufacture craft of described aluminium alloy pole stock, may further comprise the steps:
A, melting;
B, casting;
C, rolling;
D, homogenize;
In the described a step, temperature of aluminum liquid is 700-750 ℃; Described b and c step are continuous casting and rolling, wherein, advance to roll temperature and are controlled at 450-550 ℃, and rolling rear press quenching water temp is controlled at 50-60 ℃; The processing that homogenizes of described d step refers to the aluminium alloy pole stock is incubated 4-6 hour in 560 ± 10 ℃ of environment, forces cooling again.
Simultaneously the present invention also provides a kind of application of described aluminium alloy pole stock, namely adopts the extrusion processing of described aluminium alloy pole stock to become aluminium alloy pipe.
The invention has the beneficial effects as follows:
Aluminium alloy constituent content of the present invention is reasonable, and the Mn element is unique main alloying element in the alloy among the present invention, and alloy strength increases with Mn content and improves, but can produce frangible compounds MnAl during its too high levels
6, can cause cracking follow-up when rolling, Mn element of the present invention rationally not only guarantees intensity of aluminum alloy but also preferably plasticity is arranged.In addition, Fe, Si also are aluminium alloy main component elements of the present invention, and constituent content is reasonable, can reduce casting crack proneness and resistance to deformation when rolling.The Cu element can improve intensity of aluminum alloy, but can significantly reduce solidity to corrosion, and the Cu constituent content is reasonable in the aluminium alloy of the present invention, has taken into account preferably intensity and the corrosion resistance nature of aluminium alloy.The present invention is 700-750 ℃ by control smelting aluminum liquid temp, and the temperature of advancing to roll in the continuous casting and rolling is controlled at 450-550 ℃, and 50-60 ℃ of rolling rear press quenching water temp is so that aluminium alloy rod has obtained preferably mechanical property.Especially at last by the processing that homogenizes, be about to the aluminium alloy pole stock and in 560 ± 10 ℃ of environment, be incubated 14-16 hour, force again cooling, so that crystal grain is finer and smoother evenly in the aluminium alloy, all technical has obtained large increase, makes the more superior aluminium alloy pole stock of performance, its tensile strength 100-115Mpa, unit elongation 28-35%, resistivity 26-33n Ω .m.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being apparent to those skilled in the art to investigating hereinafter, perhaps can take a hint from the practice of the present invention.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1.
The aluminium alloy pole stock of the present embodiment contains Mn 1.15%, Fe 0.4%, Cu 0.09%, Si 0.15%, Ti 0.03% by weight percentage, and surplus is Al and trace impurity, and its making step comprises melting, casting, rolling and four steps of processing that homogenize.
During melting, aluminium liquid smelting temperature is set in the above 30-100 of its liquidus line ℃, and for preventing the burning of aluminium liquid, the present embodiment is defined as 750 ℃; Fusion process interalloy element all adopts the additive form to add, and adds temperature and is controlled at 735 ± 10 ℃, and the solvent temperature height of pressing alloy adds successively; When molten aluminium is processed in the melting, adopt the import refining agent, in holding furnace, adopt nitrogen/injection refining technology in the stove, control ratio consumption 1.25kg/t.Al well; For crystal grain thinning can add Al-Ti-B alloy in the technology ratio respectively in melting, online two operations; Adopt argon gas to carry out online degassing processing, gas flow is 1.0～2.5m3/min, and gaseous tension 0.5～3.0bar, graphite rotator rotating speed are 400～550 rev/mins; Adopt the online ceramic filter plate technique of 50ppi to carry out aluminium liquid and filter, improve aluminium liquid purity, reduce impurity.
During casting, for guaranteeing the good fillibility of aluminium liquid, should choose higher casting temp, inhale hydrogen and strand hot cracking tendency but should avoid increasing aluminium liquid, casting temp is stabilized in 720 degree and (specifically decides according to the winter and summer envrionment temperature) on the lower side; At the casting rate design aspect, too high casting rate can make the liquid cave deepen, and increases tissue looseness and strand hot cracking tendency; Casting speed is crossed to hang down and then can be reduced production efficiency, increase resistance to deformation when rolling, the design casting rate is 7.5 tons/hour in the present embodiment, during cooling, cooling water inflow is designed to 3/4 of fine aluminium flow, employing taper cooling, namely each subregion discharge flow changes from small to big and diminishes, and cooling water pressure is designed to 200kpa-250kpa.
When rolling, for guaranteeing good rolling performance, reduce the sticking aluminium of roll, advance to roll temperature and be controlled at 550 ℃, can suitably open induction heater and heat up; The concentration of emulsion used that uses improves its concentration and pressure with the rolled alloy strength increase, strengthens proportioning; And by adjusting the moment of torsion of milling train, controlled rolling stress is controlled physicals and is rolled into the pole stock that diameter is 9.5mm; Rolling rear press quenching, quench water temperature 50 C, hydraulic pressure 100-200kpa.
Homogenize when processing, utilize existing heat treatment furnace, and determine rationally effectively charging technique, reasonable Arrangement aluminium alloy pole stock spacing according to the space of stove internal furnace; Avoid pole stock be heated inequality and temperature distortion problem, temperature is controlled at 560 ± 10 ℃ and reaches 4 hours, force again cooling, make crystal grain finer and smoother evenly, all technical has obtained large increase, tensile strength is controlled at 100-115Mpa, elongation control is at 28-35%, resistivity is controlled at 26-33n Ω .m, meet the extrusion processing requirement of derived product, can be made into aluminium alloy pipe, various fluid containers and other little load parts with the deep-draw making can further be drawn into wire rod and be used for doing rivet and welding wire.
Embodiment 2.
The aluminium alloy pole stock of the present embodiment contains Mn 1.08%, Fe 0.4%, Cu 0.1%, Si 0.13%, Ti 0.02% by weight percentage, and surplus is Al and trace impurity, and its making step comprises melting, casting, rolling and four steps of processing that homogenize.
During melting, aluminium liquid smelting temperature is set in the above 30-100 of its liquidus line ℃, and for preventing the burning of aluminium liquid, the present embodiment is defined as 700 ℃; Fusion process interalloy element all adopts the additive form to add, and adds temperature and is controlled at 735 ± 10 ℃, and the solvent temperature height of pressing alloy adds successively; When molten aluminium is processed in the melting, adopt the import refining agent, in holding furnace, adopt nitrogen/injection refining technology in the stove, control ratio consumption 1.25kg/t.Al well; For crystal grain thinning can add Al-Ti-B alloy in the technology ratio respectively in melting, online two operations; Adopt argon gas to carry out online degassing processing, gas flow is 1.0～2.5m3/min, and gaseous tension 0.5～3.0bar, graphite rotator rotating speed are 400～550 rev/mins; Adopt the online ceramic filter plate technique of 50ppi to carry out aluminium liquid and filter, improve aluminium liquid purity, reduce impurity.
During casting, for guaranteeing the good fillibility of aluminium liquid, should choose higher casting temp, inhale hydrogen and strand hot cracking tendency but should avoid increasing aluminium liquid, casting temp is stabilized in 720 degree and (specifically decides according to the winter and summer envrionment temperature) on the lower side; At the casting rate design aspect, too high casting rate can make the liquid cave deepen, and increases tissue looseness and strand hot cracking tendency; Casting speed is crossed to hang down and then can be reduced production efficiency, increase resistance to deformation when rolling, the design casting rate is 7.5 tons/hour in the present embodiment, during cooling, cooling water inflow is designed to 3/4 of fine aluminium flow, employing taper cooling, namely each subregion discharge flow changes from small to big and diminishes, and cooling water pressure is designed to 200kpa-250kpa.
When rolling, for guaranteeing good rolling performance, reduce the sticking aluminium of roll, advance to roll temperature and be controlled at 450 ℃, can suitably open induction heater and heat up; The concentration of emulsion used that uses improves its concentration and pressure with the rolled alloy strength increase, strengthens proportioning; And by adjusting the moment of torsion of milling train, controlled rolling stress is controlled physicals and is rolled into the pole stock that diameter is 9.5mm; Rolling rear press quenching, quench water temperature 60 C, hydraulic pressure 100-200kpa.
Homogenize when processing, utilize existing heat treatment furnace, and determine rationally effectively charging technique, reasonable Arrangement aluminium alloy pole stock spacing according to the space of stove internal furnace; Avoid pole stock be heated inequality and temperature distortion problem, temperature is controlled at 560 ± 10 ℃ and reaches 6 hours, force again cooling, make crystal grain finer and smoother evenly, all technical has obtained large increase, tensile strength is controlled at 100-115Mpa, elongation control is at 28-35%, resistivity is controlled at 26-33n Ω .m, meet the extrusion processing requirement of derived product, can be made into aluminium alloy pipe, various fluid containers and other little load parts with the deep-draw making can further be drawn into wire rod and be used for doing rivet and welding wire.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, other modifications that those of ordinary skills make technical scheme of the present invention or be equal to replacement, only otherwise break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (5)
1. aluminium alloy pole stock, it is characterized in that: by weight percentage, contain Mn 1.05-1.15%, Fe 0.35-0.45%, Cu 0.08-0.13%, Si 0.08-0.15%, Ti 0.01-0.03%, surplus is Al and trace impurity, and tensile strength is that 100-115MPa, unit elongation are 28-35%, resistivity 26-33n Ω .m.
2. a kind of aluminium alloy pole stock according to claim 1, it is characterized in that: by weight percentage, contain Mn 1.08%, Fe 0.4%, Cu 0.1%, Si 0.13%, Ti 0.02%, surplus is Al and trace impurity; Tensile strength 100-115MPa, unit elongation 28-35%, resistivity 26-33n Ω .m.
3. according to claim 1 or 2 described a kind of aluminium alloy pole stocks, it is characterized in that: diameter is 9.5mm.
4. the manufacture craft of a kind of aluminium alloy pole stock as claimed in claim 1 or 2, it is characterized in that: this technique may further comprise the steps:
A, melting;
B, casting;
C, rolling;
D, homogenize;
In the described a step, temperature of aluminum liquid is 700-750 ℃; Described b and c step are continuous casting and rolling, wherein, advance to roll temperature and are controlled at 450-550 ℃, and rolling rear press quenching water temp is controlled at 50-60 ℃; Homogenizing of described d step refers to the aluminium alloy pole stock is incubated 4-6 hour in 560 ± 10 ℃ of environment, forces cooling again.
5. an aluminium alloy pipe is characterized in that: adopt claim 1 or 2 described aluminium alloy pole stock extrusion processinges to form.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469018A (en) * | 2013-09-29 | 2013-12-25 | 句容市石狮冲压件厂 | Aluminum alloy rivet |
| CN105624479A (en) * | 2015-11-26 | 2016-06-01 | 新疆众和股份有限公司 | Aluminum-silicon system alloy rod used for welding and production method of aluminum-silicon system alloy rod |
| CN105714155A (en) * | 2015-12-21 | 2016-06-29 | 河南明泰铝业股份有限公司 | Power battery case aluminum plate, power battery case aluminum belt and production method of power battery case aluminum plate and power battery case aluminum belt |
| CN106216426A (en) * | 2016-07-29 | 2016-12-14 | 国网河北省电力公司电力科学研究院 | A kind of rolling mill practice improving aluminum conductor conductivity and intensity |
| CN108754196A (en) * | 2018-08-30 | 2018-11-06 | 新疆众和股份有限公司 | A kind of preparation method of bonding acieral busbar |
| CN111926252A (en) * | 2020-07-31 | 2020-11-13 | 马鞍山钢铁股份有限公司 | Hot-rolled pickled steel plate for deep drawing and production method thereof |
| CN113005337A (en) * | 2021-03-17 | 2021-06-22 | 内蒙古联晟新能源材料有限公司 | Method for manufacturing container foil blank |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101086050A (en) * | 2006-06-06 | 2007-12-12 | 上虞市东轻特种铝材厂 | Aluminium alloy tube |
| CN102615139A (en) * | 2012-04-01 | 2012-08-01 | 江苏格林威尔金属材料科技有限公司 | Continuous extrusion process of circular aluminum alloy pipe |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086050A (en) * | 2006-06-06 | 2007-12-12 | 上虞市东轻特种铝材厂 | Aluminium alloy tube |
| CN102615139A (en) * | 2012-04-01 | 2012-08-01 | 江苏格林威尔金属材料科技有限公司 | Continuous extrusion process of circular aluminum alloy pipe |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469018A (en) * | 2013-09-29 | 2013-12-25 | 句容市石狮冲压件厂 | Aluminum alloy rivet |
| CN105624479A (en) * | 2015-11-26 | 2016-06-01 | 新疆众和股份有限公司 | Aluminum-silicon system alloy rod used for welding and production method of aluminum-silicon system alloy rod |
| CN105714155A (en) * | 2015-12-21 | 2016-06-29 | 河南明泰铝业股份有限公司 | Power battery case aluminum plate, power battery case aluminum belt and production method of power battery case aluminum plate and power battery case aluminum belt |
| CN106216426A (en) * | 2016-07-29 | 2016-12-14 | 国网河北省电力公司电力科学研究院 | A kind of rolling mill practice improving aluminum conductor conductivity and intensity |
| CN106216426B (en) * | 2016-07-29 | 2019-06-04 | 国网河北省电力公司电力科学研究院 | A kind of rolling mill practice improving aluminum conductor conductivity and intensity |
| CN108754196A (en) * | 2018-08-30 | 2018-11-06 | 新疆众和股份有限公司 | A kind of preparation method of bonding acieral busbar |
| CN111926252A (en) * | 2020-07-31 | 2020-11-13 | 马鞍山钢铁股份有限公司 | Hot-rolled pickled steel plate for deep drawing and production method thereof |
| CN111926252B (en) * | 2020-07-31 | 2022-01-18 | 马鞍山钢铁股份有限公司 | Hot-rolled pickled steel plate for deep drawing and production method thereof |
| CN113005337A (en) * | 2021-03-17 | 2021-06-22 | 内蒙古联晟新能源材料有限公司 | Method for manufacturing container foil blank |
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Application publication date: 20130130 |