CN110106377A - A kind of automobile engine bracket aluminum melting process - Google Patents
A kind of automobile engine bracket aluminum melting process Download PDFInfo
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- CN110106377A CN110106377A CN201910501056.8A CN201910501056A CN110106377A CN 110106377 A CN110106377 A CN 110106377A CN 201910501056 A CN201910501056 A CN 201910501056A CN 110106377 A CN110106377 A CN 110106377A
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- slag
- aluminium alloy
- smelting furnace
- automobile engine
- engine bracket
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention is a kind of automobile engine bracket aluminum melting process, include the following steps: molten aluminium alloy raw material first, then it carries out blowing except sodium operates, then operation of skimming for the first time is carried out, then prealloy ingot after addition auxiliary material, then chilling operation is carried out, casting sample can be carried out after operation of finally being skimmed for the second time.The mixture of chromium trioxide and ferrous bromide is used in the present invention, it is possible to reduce the generation of slag, tensile strength and yield strength of obtained alloy product etc. are higher；The nitrogen-blow into aluminium alloy simultaneously, makes nitrogen react with sodium element, and then generates sodium azide dross, so as to the sodium element content being further reduced in aluminium alloy；The chilling step of final alloy liquid not only simple cooling, moreover it is possible to improve melt viscosity, reduce convection current, prevent from being segregated, improve nucleating condition, play refining effect.
Description
Technical field
The present invention relates to aluminium alloy smelting technical field more particularly to a kind of automobile engine bracket aluminium alloy smelting works
Skill.
Background technique
Aluminium alloy is the alloy general name based on aluminium, and main alloy element has copper, silicon, magnesium, zinc or manganese, secondary alloy member
It is known as nickel, iron, titanium, chromium or lithium etc..The processing performance of aluminium alloy is good, especially hypoeutectic silico-aluminum, and not only processing performance is good,
And light specific gravity, surface aesthetic and corrosion-resistant, good casting property, product comprehensive mechanical property is good, can be used for making variform
Component, aluminium and its alloy favored from ancient times due to excellent mechanical property, corrosion resistance, processability, simultaneously
In addition 2.17g/cm2Low-density be used widely in many fields.Main material of the aluminium alloy as auto parts and components,
At home and abroad it is widely used in manufacturing car door, invisible position etc. in vehicle window and body structure.
Sodium is one of the microelement in aluminum melt, although content is seldom, it casts processing performance to aluminium alloy
Influence it is very big, especially to the fire check of the high aluminium alloy cast ingot containing magnesium and hot rolling when crack be affected.Sodium conduct
Low-melting impurities are present in alloy, and are present in crystal boundary with free state, in the case where its content is little, can also expand knot
The lower limit temperature of brittle zone during crystalline substance reduces the intensity and elongation percentage of brittle zone.When alloy shrinkage stress is more than that its own is strong
When spending, just ingot casting is caused to crack.
In the prior art, generally in refining aluminium fusant, refine except sodium using except sodium refining agent, but this refining
Technique is poor except sodium effect, and to reach technic index requirement, refining need to generally be repeated several times, time-consuming and laborious, and refining cost is high.
Summary of the invention
Present invention seek to address that the deficiencies in the prior art, and a kind of automobile engine bracket aluminum melting process is provided.
The present invention to achieve the above object, using following technical scheme:
A kind of automobile engine bracket aluminum melting process, includes the following steps:
(1) melting of aluminium alloy
Heating melting in smelting furnace is added in aluminium alloy stock then to start stirring at aluminium alloy, stand alternately；
(2) it blows and removes sodium
Continue to be heated to 760 DEG C~770 DEG C, smelting furnace door is then shut off, using nitrogen injection melt, after the completion of blowing
It stands；
(3) it skims for the first time operation
By slag bucket and be emitted into melting stove gate when skimming, provoked slag rake to 2m height with fork truck, it is steady enter it is molten
It in furnace, is taken off outward from smelting furnace innermost end, slag is taken off to table, is then all grilled into slag in slag bucket；
(4) addition of auxiliary material
0.0001~0.0003 times of aluminium alloy stock weight is added in by post-job smelting furnace of skimming for the first time
Chromium trioxide and ferrous bromide mixture, and stir evenly；
(5) sample block is prefabricated
A small amount of molten aluminum is scooped into clean ingot mould with tool, cooling 5min~6min forms several prealloy ingots
Block；
(6) chilling operates
Several prealloy ingots of cooling 5min~6min are put into 760 DEG C~770 DEG C of molten aluminum to alloy
Liquid carries out chilling；By the quantity of control investment prealloy ingot aluminium alloy temperature is controlled between 720 DEG C~740 DEG C
Cast temperature；
(7) it skims for the second time operation
By slag bucket and be emitted into melting stove gate when skimming, provoked slag rake to 2m height with fork truck, it is steady enter it is molten
It in furnace, is taken off outward from smelting furnace innermost end, slag is taken off to table, is then all grilled into slag in slag bucket, by second
Secondary post-job aluminium alloy of skimming can carry out casting sample.
Particularly, the temperature of heating melting is to be warming up to 720 DEG C~740 DEG C in step (1).
Particularly, stirring is stirred using graphite rod in step (1), while agitating and is vibrated.
Particularly, the nitrogen injection time is 20~40min in step (2).
Particularly, the mass ratio of chromium trioxide and ferrous bromide is 1:(5~8 in the mixture of step (4)).
The beneficial effects of the present invention are: using the mixture of chromium trioxide and ferrous bromide in the present invention, it is possible to reduce molten
The generation of slag, tensile strength and yield strength of obtained alloy product etc. are higher；The nitrogen-blow into aluminium alloy simultaneously,
So that nitrogen is reacted with sodium element, and then generate sodium azide dross, so as to the sodium member being further reduced in aluminium alloy
Cellulose content；The not only simple cooling of the chilling step of final alloy liquid, moreover it is possible to melt viscosity is improved, convection current is reduced, prevents from being segregated,
Improve nucleating condition, plays refining effect.
Specific embodiment
Below with reference to embodiment, the invention will be further described:
A kind of automobile engine bracket aluminum melting process, includes the following steps:
(1) melting of aluminium alloy
Heating melting in smelting furnace is added in aluminium alloy stock then to start stirring at aluminium alloy, stand alternately；
(2) it blows and removes sodium
Continue to be heated to 760 DEG C~770 DEG C, smelting furnace door is then shut off, using nitrogen injection melt, after the completion of blowing
It stands；
(3) it skims for the first time operation
By slag bucket and be emitted into melting stove gate when skimming, provoked slag rake to 2m height with fork truck, it is steady enter it is molten
It in furnace, is taken off outward from smelting furnace innermost end, slag is taken off to table, is then all grilled into slag in slag bucket；
(4) addition of auxiliary material
0.0001~0.0003 times of aluminium alloy stock weight is added in by post-job smelting furnace of skimming for the first time
Chromium trioxide and ferrous bromide mixture, and stir evenly；
(5) sample block is prefabricated
A small amount of molten aluminum is scooped into clean ingot mould with tool, cooling 5min~6min forms several prealloy ingots
Block；
(6) chilling operates
Several prealloy ingots of cooling 5min~6min are put into 760 DEG C~770 DEG C of molten aluminum to alloy
Liquid carries out chilling；By the quantity of control investment prealloy ingot aluminium alloy temperature is controlled between 720 DEG C~740 DEG C
Cast temperature；
(7) it skims for the second time operation
By slag bucket and be emitted into melting stove gate when skimming, provoked slag rake to 2m height with fork truck, it is steady enter it is molten
It in furnace, is taken off outward from smelting furnace innermost end, slag is taken off to table, is then all grilled into slag in slag bucket, by second
Secondary post-job aluminium alloy of skimming can carry out casting sample.
Particularly, the temperature of heating melting is to be warming up to 720 DEG C~740 DEG C in step (1).
Particularly, stirring is stirred using graphite rod in step (1), while agitating and is vibrated.
Particularly, the nitrogen injection time is 20~40min in step (2).
Particularly, the mass ratio of chromium trioxide and ferrous bromide is 1:(5~8 in the mixture of step (4)).
Embodiment one
A kind of automobile engine bracket aluminum melting process, includes the following steps:
(1) melting of aluminium alloy
Heating melting in smelting furnace is added in aluminium alloy stock then to start stirring at aluminium alloy, stand alternately；
(2) it blows and removes sodium
Continue to be heated to 760 DEG C, be then shut off smelting furnace door, using nitrogen injection melt, is stood after the completion of blowing；
(3) it skims for the first time operation
By slag bucket and be emitted into melting stove gate when skimming, provoked slag rake to 2m height with fork truck, it is steady enter it is molten
It in furnace, is taken off outward from smelting furnace innermost end, slag is taken off to table, is then all grilled into slag in slag bucket；
(4) addition of auxiliary material
0.0001 times of three oxidations of aluminium alloy stock weight are added in by post-job smelting furnace of skimming for the first time
The mixture of chromium and ferrous bromide, and stir evenly；
(5) sample block is prefabricated
A small amount of molten aluminum is scooped into clean ingot mould with tool, cooling 5min forms several prealloy ingots；
(6) chilling operates
Several prealloy ingots of cooling 5min are put into 760 DEG C of molten aluminum and chilling is carried out to aluminium alloy；It is logical
The quantity for crossing control investment prealloy ingot makes aluminium alloy temperature control the cast temperature between 720 DEG C；
(7) it skims for the second time operation
By slag bucket and be emitted into melting stove gate when skimming, provoked slag rake to 2m height with fork truck, it is steady enter it is molten
It in furnace, is taken off outward from smelting furnace innermost end, slag is taken off to table, is then all grilled into slag in slag bucket, by second
Secondary post-job aluminium alloy of skimming can carry out casting sample.
Particularly, the temperature of heating melting is to be warming up to 720 DEG C in step (1).
Particularly, stirring is stirred using graphite rod in step (1), while agitating and is vibrated.
Particularly, the nitrogen injection time is 20min in step (2).
Particularly, the mass ratio of chromium trioxide and ferrous bromide is 1:5 in the mixture of step (4).
Embodiment two
A kind of automobile engine bracket aluminum melting process, includes the following steps:
(1) melting of aluminium alloy
Heating melting in smelting furnace is added in aluminium alloy stock then to start stirring at aluminium alloy, stand alternately；
(2) it blows and removes sodium
Continue to be heated to 770 DEG C, be then shut off smelting furnace door, using nitrogen injection melt, is stood after the completion of blowing；
(3) it skims for the first time operation
By slag bucket and be emitted into melting stove gate when skimming, provoked slag rake to 2m height with fork truck, it is steady enter it is molten
It in furnace, is taken off outward from smelting furnace innermost end, slag is taken off to table, is then all grilled into slag in slag bucket；
(4) addition of auxiliary material
0.0003 times of three oxidations of aluminium alloy stock weight are added in by post-job smelting furnace of skimming for the first time
The mixture of chromium and ferrous bromide, and stir evenly；
(5) sample block is prefabricated
A small amount of molten aluminum is scooped into clean ingot mould with tool, cooling 6min forms several prealloy ingots；
(6) chilling operates
Several prealloy ingots of cooling 6min are put into 770 DEG C of molten aluminum and chilling is carried out to aluminium alloy；It is logical
The quantity for crossing control investment prealloy ingot makes aluminium alloy temperature control the cast temperature between 740 DEG C；
(7) it skims for the second time operation
By slag bucket and be emitted into melting stove gate when skimming, provoked slag rake to 2m height with fork truck, it is steady enter it is molten
It in furnace, is taken off outward from smelting furnace innermost end, slag is taken off to table, is then all grilled into slag in slag bucket, by second
Secondary post-job aluminium alloy of skimming can carry out casting sample.
Particularly, the temperature of heating melting is to be warming up to 740 DEG C in step (1).
Particularly, stirring is stirred using graphite rod in step (1), while agitating and is vibrated.
Particularly, the nitrogen injection time is 40min in step (2).
Particularly, the mass ratio of chromium trioxide and ferrous bromide is 1:8 in the mixture of step (4).
The present invention is exemplarily described above, it is clear that present invention specific implementation is not subject to the restrictions described above,
As long as using the various improvement that the inventive concept and technical scheme of the present invention carry out, or not improved directly apply to other fields
It closes, it is within the scope of the present invention.
Claims (5)
1. a kind of automobile engine bracket aluminum melting process, which comprises the steps of:
(1) melting of aluminium alloy
Heating melting in smelting furnace is added in aluminium alloy stock then to start stirring at aluminium alloy, stand alternately；
(2) it blows and removes sodium
Continue to be heated to 760 DEG C~770 DEG C, is then shut off smelting furnace door, it is quiet after the completion of blowing using nitrogen injection melt
It sets；
(3) it skims for the first time operation
By slag bucket and it is emitted into melting stove gate when skimming, slag rake is provoked to 2m height with fork truck, steadily enters smelting furnace
It is interior, it is taken off outward from smelting furnace innermost end, slag is taken off to table, is then all grilled into slag in slag bucket；
(4) addition of auxiliary material
The three of 0.0001~0.0003 times of aluminium alloy stock weight are added in by post-job smelting furnace of skimming for the first time
The mixture of chromium oxide and ferrous bromide, and stir evenly；
(5) sample block is prefabricated
A small amount of molten aluminum is scooped into clean ingot mould with tool, cooling 5min~6min forms several prealloy ingots；
(6) chilling operates
Several prealloy ingots of cooling 5min~6min are put into 760 DEG C~770 DEG C of molten aluminum to aluminium alloy into
Row chilling；Aluminium alloy temperature is made to control pouring between 720 DEG C~740 DEG C by the quantity of control investment prealloy ingot
Cast temperature；
(7) it skims for the second time operation
By slag bucket and it is emitted into melting stove gate when skimming, slag rake is provoked to 2m height with fork truck, steadily enters smelting furnace
It is interior, it is taken off outward from smelting furnace innermost end, slag is taken off to table, is then all grilled into slag in slag bucket, by taking off for the second time
The post-job aluminium alloy of slag can carry out casting sample.
2. a kind of automobile engine bracket aluminum melting process according to claim 1, which is characterized in that step (1)
The temperature of middle heating melting is to be warming up to 720 DEG C~740 DEG C.
3. a kind of automobile engine bracket aluminum melting process according to claim 1, which is characterized in that step (1)
Middle stirring is stirred using graphite rod, while agitating and is vibrated.
4. a kind of automobile engine bracket aluminum melting process according to claim 1, which is characterized in that step (2)
The middle nitrogen injection time is 20~40min.
5. a kind of automobile engine bracket aluminum melting process according to claim 1, which is characterized in that step (4)
Mixture in the mass ratio of chromium trioxide and ferrous bromide be 1:(5~8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910501056.8A CN110106377A (en) | 2019-06-11 | 2019-06-11 | A kind of automobile engine bracket aluminum melting process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910501056.8A CN110106377A (en) | 2019-06-11 | 2019-06-11 | A kind of automobile engine bracket aluminum melting process |
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| CN110106377A true CN110106377A (en) | 2019-08-09 |
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| CN201910501056.8A Withdrawn CN110106377A (en) | 2019-06-11 | 2019-06-11 | A kind of automobile engine bracket aluminum melting process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110904352A (en) * | 2019-12-05 | 2020-03-24 | 南通爱尔思轻合金精密成型有限公司 | Smelting homogenization process for ZL201 cast aluminum alloy |
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| CN108342603A (en) * | 2018-05-16 | 2018-07-31 | 湖北金洋资源股份公司 | A kind of aluminum melt removing sodium |
| CN108441656A (en) * | 2018-05-16 | 2018-08-24 | 湖北金洋资源股份公司 | A kind of aluminium alloy smelting Technology for removing sodium |
| CN109082546A (en) * | 2018-08-24 | 2018-12-25 | 海门市沪海有色铸造有限公司 | A kind of ZAlCu5Mn melting cast aluminum alloy technique |
| CN109487111A (en) * | 2018-12-26 | 2019-03-19 | 湖北金洋资源股份公司 | A kind of eutectic slag rate metal smelt technique |
| CN109487112A (en) * | 2018-12-26 | 2019-03-19 | 湖北金洋资源股份公司 | A kind of alloy product production method |
| CN109518031A (en) * | 2018-12-26 | 2019-03-26 | 湖北金洋资源股份公司 | A kind of aluminum melting process |
-
2019
- 2019-06-11 CN CN201910501056.8A patent/CN110106377A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108342603A (en) * | 2018-05-16 | 2018-07-31 | 湖北金洋资源股份公司 | A kind of aluminum melt removing sodium |
| CN108441656A (en) * | 2018-05-16 | 2018-08-24 | 湖北金洋资源股份公司 | A kind of aluminium alloy smelting Technology for removing sodium |
| CN109082546A (en) * | 2018-08-24 | 2018-12-25 | 海门市沪海有色铸造有限公司 | A kind of ZAlCu5Mn melting cast aluminum alloy technique |
| CN109487111A (en) * | 2018-12-26 | 2019-03-19 | 湖北金洋资源股份公司 | A kind of eutectic slag rate metal smelt technique |
| CN109487112A (en) * | 2018-12-26 | 2019-03-19 | 湖北金洋资源股份公司 | A kind of alloy product production method |
| CN109518031A (en) * | 2018-12-26 | 2019-03-26 | 湖北金洋资源股份公司 | A kind of aluminum melting process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110904352A (en) * | 2019-12-05 | 2020-03-24 | 南通爱尔思轻合金精密成型有限公司 | Smelting homogenization process for ZL201 cast aluminum alloy |
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Application publication date: 20190809 |