CN105274454A - Aluminum alloy cast bar homogenization process special for extruding automobile steering control arm bars - Google Patents
Aluminum alloy cast bar homogenization process special for extruding automobile steering control arm bars Download PDFInfo
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- CN105274454A CN105274454A CN201510605696.5A CN201510605696A CN105274454A CN 105274454 A CN105274454 A CN 105274454A CN 201510605696 A CN201510605696 A CN 201510605696A CN 105274454 A CN105274454 A CN 105274454A
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Abstract
The invention relates to an aluminum alloy cast bar homogenization process, in particular to the aluminum alloy cast bar homogenization process special for extruding automobile steering control arm bars, and belongs to the technical field. The aluminum alloy cast bar homogenization process includes the steps of feeding, primary heating and heat preservation, secondary heating and heat preservation and bar cooling. A good foundation is provided for the extrusion process of aluminum alloy cast bars, the aluminum alloy cast bars produced through the process have high mechanical performance and excellent tenacity, and tensile strength, yield strength and elongation are all improved; and aluminum alloy automobile control arms produced through the aluminum alloy cast bars processed through the process are light in weight, attractive in appearance, long in service life and capable of being widely applied to the field of automobiles.
Description
Technical field
The present invention relates to a kind of aluminium alloy cast rod homogenization process, a kind of extruding motor turning control arm bar dedicated aluminium alloy casting rod homogenization process, belongs to technical field specifically.
Background technology
Motor turning control arm is the important composition in automobile suspension system, because control arm is a vitals of safety member automobile, its quality directly has influence on the performance of automotive performance and the safety performance of whole automobile.The production of aluminium alloy automobile steering control arm adopts the thermal forging technology being, very strict to the performance requriements of its forge hot extruding aluminium alloy bar material used, the steering control arm produced, not only requires to have good physical strength, but also must have excellent impelling strength etc.In recent years, superior automobile major part both domestic and external adopts reflectal control arm.
Forged aluminium closes control arm extruding aluminium alloy bar in process of production, and very high to the requirement of aluminum alloy cast bar material, the Performance and quality of aluminium alloy cast rod will directly have influence on the performance of automobile control arm.At present, aluminium alloy cast rod mainly adopts semi-continuous casting method to produce, this method be by molten aluminium alloy liquid after mold, adopt water forced cooling method shaping, aluminium alloy speed of cooling is fast, and the velocity of diffusion of alloying element is less than crystallization velocity, and this is a kind of non-equilibrium crystallization.There is the problem of two aspects in this traditional aluminium alloy cast rod made by non-equilibrium crystallization: one is because the pressure of water cools, and makes casting rod be that vertical section or cross section all exist the even phenomenon of inhomogeneous cooling, cause casting rod to there is certain casting stress; Two diffusion processes when are non-equilibrium crystallization states being crystallizations are obstructed, and this state is thermodynamically metastable.Due to the existence of this two problems, the grain structure of next step extruded bars and performance is made to be difficult to meet the requirement of forging control arm.Therefore, casting rod must carry out homogenization process process before extrusion.Homogenization process is exactly by aluminium alloy cast rod under the high temperature conditions, improves atomic diffusion ability, eliminate its casting stress and non-equilibrium crystalline state by insulation.Selection, the soaking time of homogenization process temperature are all very important, and temperature is too high, can exceed the burnt temperature of alloy, and alloy property can worsen at once, becomes waste product; Temperature is too low, and the object of homogenizing cannot realize completely, and whether the degree that the time then has influence on atomic diffusion reaches complete.
Summary of the invention
The object of the invention is to overcome above-mentioned weak point, thus a kind of extruding motor turning control arm bar dedicated aluminium alloy casting rod homogenization process is provided, good basis can be provided for extruded bars operation, the rods and bars of aluminium alloy produced thus, there is higher mechanical property and excellent toughness, tensile strength, yield strength, unit elongation all improve a lot, and meet the requirement of the high-end aluminium alloy car steering control arm strength of materials, can be widely used in automotive field.
According to technical scheme provided by the invention, extruding motor turning control arm bar dedicated aluminium alloy casting rod homogenization process, comprises the steps:
1. feed: first the aluminium alloy cast rod cast is loaded in bin;
2. a heating and thermal insulation: inserted by the aluminium alloy cast rod be contained on bin in box type gas homogenizing stove and once heat, heats the temperature of aluminium alloy cast rod to 520 ~ 540 DEG C, is incubated 1.9 ~ 2.1 hours;
3. second-heating insulation: after a time heating and thermal insulation completes, again the temperature of aluminium alloy cast rod is heated to 560 ~ 570 DEG C, be incubated 1.9 ~ 2.1 hours;
4. bar cooling: after second-heating insulation terminates, be transferred to by aluminium alloy cast rod in cooling room and carry out cooling process, its transfer time is 3-10min; Use the mode of water spray cooling, aluminium alloy cast rod is cooled to less than 300 DEG C, cooling time is 15-30min; Aluminium alloy cast rod temperature, lower than after 300 DEG C, re-uses water and directly rushes cold but aluminium alloy cast rod, improves aluminium alloy cast rod rate of cooling, until be down to consistent with room temperature by the temperature of aluminium alloy cast rod; After aluminium alloy cast rod temperature reaches room temperature, then shift out cooling room, namely aluminium alloy cast rod is disposed.
Further, backing plate is adopted to separate between every layer of aluminium alloy cast rod.
Further, the mode adopting thermopair directly to contact aluminium alloy cast rod carries out monitoring temperature.
Compared with the prior art the present invention has the following advantages:
The present invention is that the extrusion process of aluminium alloy cast rod provides good basis, the rods and bars of aluminium alloy produced thus, and have higher mechanical property and excellent toughness, tensile strength, yield strength, unit elongation all improve a lot; Adopt the aluminium alloy automobile control arm that the aluminium alloy cast rod of this art breading is produced, lightweight, good looking appearance, long service life, can be widely used in automotive field.
Embodiment
The present invention below will be further described according to embodiment:
Embodiment 1, the present embodiment mainly comprises the steps:
1. feed: first the aluminium alloy cast rod cast is loaded in bin, between every layer of aluminium alloy cast rod, adopt backing plate to separate;
2. a heating and thermal insulation: inserted by the aluminium alloy cast rod be contained on bin in box type gas homogenizing stove and once heat, heats the temperature of aluminium alloy cast rod to 520 ° of C, is incubated 1.9 hours;
3. second-heating insulation: after a time heating and thermal insulation completes, again the temperature of aluminium alloy cast rod is heated to 560 ° of C, be incubated 1.9 hours; The mode adopting thermopair directly to contact aluminium alloy cast rod carries out monitoring temperature;
4. bar cooling: after second-heating insulation terminates, be transferred to by aluminium alloy cast rod in cooling room and carry out cooling process, its transfer time is 3min; Use the mode of water spray cooling, aluminium alloy cast rod is cooled to 285 DEG C, cooling time is 15min; During aluminium alloy cast rod temperature to 285 DEG C, re-use water and directly rush cold but aluminium alloy cast rod, improve the rate of cooling of aluminium alloy cast rod, until be down to consistent with room temperature by the temperature of aluminium alloy cast rod; After aluminium alloy cast rod temperature reaches room temperature, then shift out cooling room, namely aluminium alloy cast rod is disposed.
Embodiment 2, the present embodiment mainly comprises the steps:
1. feed: first the aluminium alloy cast rod cast is loaded in bin, between every layer of aluminium alloy cast rod, adopt backing plate to separate;
2. once heat: the aluminium alloy cast rod be contained on bin is inserted in box type gas homogenizing stove and carry out Homogenization Treatments, the mode adopting thermopair directly to contact aluminium alloy cast rod carries out monitoring temperature, the temperature of aluminium alloy cast rod is heated to 530 ° of C, be incubated 2 hours;
3. second-heating: after a time heating and thermal insulation completes, heats the temperature of aluminium alloy cast rod again to 565 ° of C, is incubated 2 hours;
4. bar cooling: after second-heating insulation terminates, be transferred to by aluminium alloy cast rod in cooling room and carry out cooling process, its transfer time is 6min; Use the mode of water spray cooling, aluminium alloy cast rod is cooled to 290 DEG C, cooling time is 20min; After aluminium alloy cast rod temperature to 290 DEG C, re-use water and directly rush cold but aluminium alloy cast rod, improve the rate of cooling of aluminium alloy cast rod, until be down to consistent with room temperature by the temperature of aluminium alloy cast rod; After aluminium alloy cast rod temperature reaches room temperature, then shift out cooling room, namely aluminium alloy cast rod is disposed.
Embodiment 3, the present embodiment mainly comprises the steps:
1. feed: first the aluminium alloy cast rod cast is loaded in bin, between every layer of aluminium alloy cast rod, adopt backing plate to separate;
2. once heat: the aluminium alloy cast rod be contained on bin is inserted in box type gas homogenizing stove and carry out Homogenization Treatments, the mode adopting thermopair directly to contact aluminium alloy cast rod carries out monitoring temperature, the temperature of aluminium alloy cast rod is heated to 540 ° of C, be incubated 2.1 hours;
3. second-heating: after a time heating and thermal insulation completes, heats the temperature of aluminium alloy cast rod again to 570 ° of C, is incubated 2.1 hours;
4. bar cooling: after second-heating insulation terminates, be transferred to by aluminium alloy cast rod in cooling room and carry out cooling process, its transfer time is 9min; Use the mode of water spray cooling, aluminium alloy cast rod is cooled to 295 DEG C, cooling time is 25min; After aluminium alloy cast rod temperature to 295 DEG C, re-use water and directly rush cold but aluminium alloy cast rod, improve the rate of cooling of aluminium alloy cast rod, until be down to consistent with room temperature by the temperature of aluminium alloy cast rod; After aluminium alloy cast rod temperature reaches room temperature, then shift out cooling room, namely aluminium alloy cast rod is disposed.
The present invention is that the extrusion process of aluminium alloy cast rod provides good basis, the rods and bars of aluminium alloy produced thus, and have higher mechanical property and excellent toughness, tensile strength, yield strength, unit elongation all improve a lot; Adopt the aluminium alloy automobile control arm that the aluminium alloy cast rod of this art breading is produced, lightweight, good looking appearance, long service life, can be widely used in automotive field.
Claims (3)
1. extrude a motor turning control arm bar dedicated aluminium alloy casting rod homogenization process, it is characterized in that: comprise the steps:
1). charging: first the aluminium alloy cast rod cast is loaded in bin;
2). once heating and thermal insulation: inserted by the aluminium alloy cast rod be contained on bin in box type gas homogenizing stove and once heat, the temperature of aluminium alloy cast rod heated to 520 ~ 540 DEG C, is incubated 1.9 ~ 2.1 hours;
3). second-heating is incubated: after one time heating and thermal insulation completes, again heat to 560 ~ 570 DEG C by the temperature of aluminium alloy cast rod, be incubated 1.9 ~ 2.1 hours;
4). bar cools: after second-heating insulation terminates, be transferred to rapidly in cooling room by aluminium alloy cast rod and carry out cooling process, its transfer time is 3-10min; Use the mode of water spray cooling, aluminium alloy cast rod is cooled to less than 300 DEG C, cooling time is 15-30min; Aluminium alloy cast rod temperature, lower than after 300 DEG C, re-uses water and directly rushes cold but aluminium alloy cast rod, improves aluminium alloy cast rod rate of cooling, until be down to consistent with room temperature by the temperature of aluminium alloy cast rod; After aluminium alloy cast rod temperature reaches room temperature, then shift out cooling room, namely aluminium alloy cast rod is disposed.
2. extruding motor turning control arm bar dedicated aluminium alloy casting rod homogenization process as claimed in claim 1, is characterized in that: adopt backing plate to separate between every layer of aluminium alloy cast rod.
3. extruding motor turning control arm bar dedicated aluminium alloy casting rod homogenization process as claimed in claim 1, is characterized in that: the mode adopting thermopair directly to contact aluminium alloy cast rod carries out monitoring temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510605696.5A CN105274454A (en) | 2015-09-22 | 2015-09-22 | Aluminum alloy cast bar homogenization process special for extruding automobile steering control arm bars |
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| CN201510605696.5A CN105274454A (en) | 2015-09-22 | 2015-09-22 | Aluminum alloy cast bar homogenization process special for extruding automobile steering control arm bars |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001303221A (en) * | 2000-02-23 | 2001-10-31 | Soc Metallurgique De Gerzat | PRESSURE HOLLOW BARREL BODY MADE OF AlZnMgCu ALLOY AND ITS PRODUCING METHOD |
| CN102373390A (en) * | 2010-08-07 | 2012-03-14 | 秦皇岛开发区美铝合金有限公司 | Uniformization technology of special-purposed aluminum alloy cast rods used in forging rotating hubs |
| CN102644039A (en) * | 2011-02-17 | 2012-08-22 | 北京有色金属研究总院 | Preparation method of high-quality 6061 aluminium alloy forging for semiconductor equipment |
| CN103725932A (en) * | 2013-12-11 | 2014-04-16 | 无锡海特铝业有限公司 | High-strength silicon, magnesium, manganese-aluminum bar and preparation method thereof |
-
2015
- 2015-09-22 CN CN201510605696.5A patent/CN105274454A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001303221A (en) * | 2000-02-23 | 2001-10-31 | Soc Metallurgique De Gerzat | PRESSURE HOLLOW BARREL BODY MADE OF AlZnMgCu ALLOY AND ITS PRODUCING METHOD |
| CN102373390A (en) * | 2010-08-07 | 2012-03-14 | 秦皇岛开发区美铝合金有限公司 | Uniformization technology of special-purposed aluminum alloy cast rods used in forging rotating hubs |
| CN102644039A (en) * | 2011-02-17 | 2012-08-22 | 北京有色金属研究总院 | Preparation method of high-quality 6061 aluminium alloy forging for semiconductor equipment |
| CN103725932A (en) * | 2013-12-11 | 2014-04-16 | 无锡海特铝业有限公司 | High-strength silicon, magnesium, manganese-aluminum bar and preparation method thereof |
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Application publication date: 20160127 |