CN106086498A - Aluminium alloy wheel hub gravity melt casting process - Google Patents
Aluminium alloy wheel hub gravity melt casting process Download PDFInfo
- Publication number
- CN106086498A CN106086498A CN201610728947.3A CN201610728947A CN106086498A CN 106086498 A CN106086498 A CN 106086498A CN 201610728947 A CN201610728947 A CN 201610728947A CN 106086498 A CN106086498 A CN 106086498A
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- China
- Prior art keywords
- wheel hub
- slag
- aluminium alloy
- alloy wheel
- spray
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/28—Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses aluminium alloy wheel hub gravity melt casting process, at least comprise the steps: that A. melts: add coke fuel, drive aerator, The faster the better to melt speed, when temperature of aluminum liquid reaches 730 DEG C～750 DEG C, stirs 23 minutes with slag spoon；The most concise degasification: b1, rotten, sprinkle slagging agent, carrying out slag hitting, then hang in holding furnace by getter, the pressure size regulating nitrogen is 0.2～0.3MPa, treat that aluminum liquid reach a certain height, temperature reaches activate switch when 715 DEG C ± 15 DEG C, carries out the concise degasification of nitrogen, and the degasification time is 20 minutes；It is away from 180 220mm at the bottom of crucible that this process need to ensure that graphite rod inserts the degree of depth in holding furnace；B2, takes slag after thermometric, after the degasification time to 20 30 minute, add an al-sr alloy bar, be stirred for thermometric after 25 35 seconds in crucible；B3, stands 2～3 minutes after taking out slag, pours into a mould.The technique of the present invention eliminates the defects such as gas cinder hole, pin hole, segregation, the final quality ensureing aluminium alloy wheel hub.
Description
Technical field
The present invention relates to casting aluminium alloy wheel hub technical field, particularly relate to aluminium alloy wheel hub gravity melting and casting work
Skill.
Background technology
Existing aluminium alloy wheel hub is in casting process, owing to reason and the equipment of processing step control, and warp
Often there will be that gas cinder hole, pin hole, composition be overproof, the phenomenon such as composition burning, segregation, ferrum exceed standard, other contaminant overstandard, through industry
Experience and analysis are pointed out, these defects cause mainly due to the bad operation of some in production process and defective workmanship.
Main cause concentrates on: temperature of aluminum liquid is the highest, and concise to every nook and cranny, scouring agent is expired.Degassing effect is bad, pressure, flow
Not, nitrogen is impure.Adding not in scale, easy scaling loss composition adds the most on schedule.Aluminum temperature severe overweight, and easily scaling loss Mg, aluminum liquid
Retrogradation.It is not sufficiently stirred for aluminum liquid.Raw material iron-holder is high, accompanies irony object, ironworker's tool soak time in aluminum liquid in charging
The most long.Raw material contaminant overstandard, adds in charging with impurity material, does not cleans out.And the defect of some processing steps.
Above-mentioned artificial, controlled reason can note by adding man-hour, but technologic defect is but had no idea gram
Clothes.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides aluminium alloy wheel hub gravity melt casting process, its
Purpose is the processing performance improving aluminium alloy wheel hub at gravity casting process, it is ensured that the aluminium alloy wheel hub that casting obtains has relatively
Good quality, eliminates that gas cinder hole, pin hole, composition be overproof, the defect such as composition burning, segregation, ferrum exceed standard, other contaminant overstandard,
Ensure the quality of aluminium alloy wheel hub eventually.
The technical solution adopted in the present invention is: aluminium alloy wheel hub gravity melt casting process, at least comprises the steps:
A. fusing: add coke fuel, drives aerator, and The faster the better to melt speed, when temperature of aluminum liquid reaches 730 DEG C～750 DEG C,
Stir 2-3 minute with slag spoon；
The most concise degasification:
B1, rotten, sprinkle slagging agent, carry out slag hitting, then getter is hung in holding furnace, regulate the pressure size of nitrogen
Being 0.2～0.3MPa, treat that aluminum liquid reach a certain height, temperature reaches activate switch when 715 DEG C ± 15 DEG C, carries out that nitrogen is concise to be removed
Gas, the degasification time is 20 minutes；It is away from 180-220mm at the bottom of crucible that this process need to ensure that graphite rod inserts the degree of depth in holding furnace,
Otherwise aluminum liquid can freeze and results in blockage in degasification rod；
B2, takes slag after thermometric, the degasification time by 20-30 minute after, in crucible add an al-sr alloy bar, be stirred for
Thermometric after 25-35 second, removes slag；
B3, stands 2～3 minutes after taking out slag, just can pour into a mould；
In degassing procedure, often observe aluminum liquid blibbing, find to stir in time during bubble, stir and invalid bubble is scooped out.
Further, in step b1 of concise degassing process, it is ensured that the degree of depth that graphite rod inserts in holding furnace is away from crucible
End 200mm；Take slag after step b2 thermometric, after the degasification time to 20 minute, in crucible, add an al-sr alloy bar, then
Thermometric after stirring 30 seconds, removes slag；B3, stands 3 minutes after taking out slag, just can pour into a mould.
Further, before aluminium alloy wheel hub gravity melting and casting, in addition it is also necessary to prepare as follows:
Instrument prepare: check whether complete, put in place；Casting ladle funnel preheats, and after spray zinc oxide coating, toasts standby；
Material prepares: thermal insulation coatings is used as by zinc oxide and 34# coating, and die cavity coating is used as by 140# coating, and iron ring to be preheated to 350
DEG C～400 DEG C；
Grilled mold: using grilled mold device baking casting die, the homogeneous temperature of casting die reaches 200 DEG C～250 DEG C of spray paints；
Spray paint: use spray gun dress 40# coating spray to cast modeling die cavity, thin spray, use 34#, zinc oxide coating spray to cast modeling to emit
Mouth, side form, thickness spray；
Grilled mold again: use grilled mold device baking casting die, when casting die baking temperature uniformly reaches 320 DEG C～350 DEG C, extinguish fire
Flame；
Blowing mould: foreign material in mould are blown clean；
Put iron ring: put in place with aluminum hammer tip-tap；
Matched moulds: first close side form, after close mould；
Put filter screen: funnel is put the filter screen of an a diameter of 160mm, cast gate is put a taper aluminum net；
Put funnel: be placed on cast gate by funnel.
Further, after casting preparation completes, standard is sought following principle and is poured into a mould: scoop aluminum liquid: follow counter just scooping
Water principle；Cast: A356 aluminum liquid, it then follows " slow, fast, slow " principle.
Further, matched moulds technique uses Hydraulic Station or oil cylinder to carry out.
Compared with prior art, the invention has the beneficial effects as follows: the aluminium alloy wheel hub gravity melt casting process of the present invention,
Ensure that aluminium alloy wheel hub is melting and in concise degasification the two technical process, in strict accordance with the technique of step A, and step
In B, the processing step of b1, b2, b3 carries out refine degasification, thus the aluminum water before ensureing casting has the most uniformly performance.And
And the present invention highlights the concrete technology that aluminium alloy wheel hub needs to prepare before casting, such as the most especially: instrument prepares, material is accurate
Standby, grilled mold, spray paint, again grilled mold, blowing mould, put iron ring, matched moulds, put filter screen, put funnel, these a few techniques and step strict implement
Afterwards, outside flawless aluminium wheels smooth, internal can be obtained.
Detailed description of the invention
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the present invention is further described, and this embodiment is only used
In explaining the present invention, protection scope of the present invention is not constituted and limit.
Aluminium alloy wheel hub gravity melt casting process, at least comprises the steps:
A. fusing: add coke fuel, drives aerator, and The faster the better to melt speed, when temperature of aluminum liquid reaches 730 DEG C～750 DEG C,
Stir 2-3 minute with slag spoon；
The most concise degasification:
B1, rotten, sprinkle slagging agent, carry out slag hitting, then getter is hung in holding furnace, regulate the pressure size of nitrogen
Being 0.2～0.3MPa, treat that aluminum liquid reach a certain height, temperature reaches activate switch when 715 DEG C ± 15 DEG C, carries out that nitrogen is concise to be removed
Gas, the degasification time is 20 minutes；It is away from 180-220mm at the bottom of crucible that this process need to ensure that graphite rod inserts the degree of depth in holding furnace,
Otherwise aluminum liquid can freeze and results in blockage in degasification rod；
B2, takes slag after thermometric, after the degasification time to 20 minute, add an al-sr alloy bar, be stirred for 25-in crucible
Thermometric after 35 seconds, removes slag；
B3, stands 2～3 minutes after taking out slag, just can pour into a mould；
In degassing procedure, often observe aluminum liquid blibbing, find to stir in time during bubble, stir and invalid bubble is scooped out.
In step b1 of concise degassing process, it is ensured that the degree of depth that graphite rod inserts in holding furnace is away from 200mm at the bottom of crucible；Step
Take slag after rapid b2 thermometric, after the degasification time to 20 minute, in crucible, add an al-sr alloy bar, be stirred for 30 seconds
Rear thermometric, removes slag；
B3, stands 2～3 minutes after taking out slag, just can pour into a mould.
Before aluminium alloy wheel hub gravity melting and casting, in addition it is also necessary to prepare as follows:
Instrument prepare: check whether complete, put in place；Casting ladle funnel preheats, and after spray zinc oxide coating, toasts standby；
Material prepares: thermal insulation coatings is used as by zinc oxide and 34# coating, and die cavity coating is used as by 140# coating, and iron ring to be preheated to 350
DEG C～400 DEG C；
Grilled mold: using grilled mold device baking casting die, the homogeneous temperature of casting die reaches 200 DEG C～250 DEG C of spray paints；
Spray paint: use spray gun dress 40# coating spray to cast modeling die cavity, thin spray, use 34#, zinc oxide coating spray to cast modeling to emit
Mouth, side form, thickness spray；
Grilled mold again: use grilled mold device baking casting die, when casting die baking temperature uniformly reaches 320 DEG C～350 DEG C, extinguish fire
Flame；
Blowing mould: foreign material in mould are blown clean；
Put iron ring: put in place with aluminum hammer tip-tap；
Matched moulds: first close side form, after close mould；
Put filter screen: funnel is put the filter screen of an a diameter of 160mm, cast gate is put a taper aluminum net；
Put funnel: be placed on cast gate by funnel.
After casting preparation completes, standard is sought following principle and is poured into a mould:
Scoop aluminum liquid: follow counter scooping and just water principle；Cast: A356 aluminum liquid, it then follows " slow, fast, slow " principle.
Matched moulds technique uses Hydraulic Station or oil cylinder to carry out.
By above-mentioned cast, it is ensured that A356 aluminum liquid pours into a mould the aluminium alloy wheel hub that obtains, meet following table component requirements:
The constituent content table of table 1 A356 aluminium alloy wheel hub.
The aluminium alloy wheel hub gravity melt casting process of the present invention, it is ensured that aluminium alloy wheel hub fusing and concise degasification this
In two technical processs, in strict accordance with the technique of step A, and in step B, the processing step of b1, b2, b3 carries out refine degasification,
Thus the aluminum water before ensureing casting has the most uniformly performance.And the present invention highlights aluminium alloy wheel hub the most especially in casting
The concrete technology prepared is needed, such as: instrument preparation, material preparation, grilled mold, spray paint, again grilled mold, blowing mould, put iron ring, conjunction before making
Mould, put filter screen, put funnel, after these a few techniques and step strict implement, outside flawless aluminum smooth, internal can be obtained
Wheel hub.
What embodiments of the invention were announced is preferred embodiment, but is not limited thereto, the ordinary skill people of this area
Member, easily according to above-described embodiment, understands the spirit of the present invention, and makes different amplifications and change, but as long as without departing from this
The spirit of invention, the most within the scope of the present invention.
Claims (5)
1. aluminium alloy wheel hub gravity melt casting process, it is characterised in that: at least comprise the steps:
A. fusing: add coke fuel, drives aerator, and The faster the better to melt speed, when temperature of aluminum liquid reaches 730 DEG C～750 DEG C,
Stir 2-3 minute with slag spoon；
The most concise degasification:
B1, rotten, sprinkle slagging agent, carry out slag hitting, then getter is hung in holding furnace, regulate the pressure size of nitrogen
Being 0.2～0.3MPa, treat that aluminum liquid reach a certain height, temperature reaches activate switch when 715 DEG C ± 15 DEG C, carries out that nitrogen is concise to be removed
Gas, the degasification time is 20 minutes；It is away from 180-220mm at the bottom of crucible that this process need to ensure that graphite rod inserts the degree of depth in holding furnace,
Otherwise aluminum liquid can freeze and results in blockage in degasification rod；
B2, takes slag after thermometric, after the degasification time to 20 minute, add an al-sr alloy bar, be stirred for 25-in crucible
Thermometric after 35 seconds, removes slag；
B3, stands 2～3 minutes after taking out slag, just can pour into a mould；
In degassing procedure, often observe aluminum liquid blibbing, find to stir in time during bubble, stir and invalid bubble is scooped out.
Aluminium alloy wheel hub gravity melt casting process the most according to claim 1, it is characterised in that: concise degassing process
In step b1, it is ensured that the degree of depth that graphite rod inserts in holding furnace is away from 200mm at the bottom of crucible；Take slag after step b2 thermometric, removing
After the gas time to 20-30 minute, in crucible, add an al-sr alloy bar, be stirred for thermometric after 30 seconds, remove slag；
B3, stands 3 minutes after taking out slag, just can pour into a mould.
Aluminium alloy wheel hub gravity melt casting process the most according to claim 1 and 2, it is characterised in that: aluminium alloy wheel hub
Before gravity melting and casting, in addition it is also necessary to prepare as follows:
Instrument prepare: check whether complete, put in place；Casting ladle funnel preheats, and after spray zinc oxide coating, toasts standby；
Material prepares: thermal insulation coatings is used as by zinc oxide and 34# coating, and die cavity coating is used as by 140# coating, and iron ring to be preheated to 350
DEG C～400 DEG C；
Grilled mold: using grilled mold device baking casting die, the homogeneous temperature of casting die reaches 200 DEG C～250 DEG C of spray paints；
Spray paint: use spray gun dress 40# coating spray to cast modeling die cavity, thin spray, use 34#, zinc oxide coating spray to cast modeling to emit
Mouth, side form, thickness spray；
Grilled mold again: use grilled mold device baking casting die, when casting die baking temperature uniformly reaches 320 DEG C～350 DEG C, extinguish fire
Flame；
Blowing mould: foreign material in mould are blown clean；
Put iron ring: put in place with aluminum hammer tip-tap；
Matched moulds: first close side form, after close mould；
Put filter screen: funnel is put the filter screen of an a diameter of 160mm, cast gate is put a taper aluminum net；
Put funnel: be placed on cast gate by funnel.
Aluminium alloy wheel hub gravity melt casting process the most according to claim 3, it is characterised in that: casting beam worker is finished
After one-tenth, standard is sought following principle and is poured into a mould:
Scoop aluminum liquid: follow counter scooping and just water principle；Cast: A356 aluminum liquid, it then follows " slow, fast, slow " principle.
Aluminium alloy wheel hub gravity melt casting process the most according to claim 3, it is characterised in that: matched moulds technique uses liquid
Pressure station or oil cylinder are carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610728947.3A CN106086498B (en) | 2016-08-26 | 2016-08-26 | Aluminium alloy wheel hub gravity melt casting process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610728947.3A CN106086498B (en) | 2016-08-26 | 2016-08-26 | Aluminium alloy wheel hub gravity melt casting process |
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| CN106086498B CN106086498B (en) | 2018-07-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457531A (en) * | 2017-07-24 | 2017-12-12 | 安徽永昌金属制品有限公司 | Hub of motorcycle production technology |
| CN112126812A (en) * | 2019-06-24 | 2020-12-25 | 江门星火减震器有限公司 | Pouring process of aluminum alloy |
| CN113046584A (en) * | 2021-03-11 | 2021-06-29 | 科曼车辆部件***(苏州)有限公司 | Preparation method of thin-wall battery compartment end plate |
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| CN1947893A (en) * | 2006-11-15 | 2007-04-18 | 黄伟锋 | Method for mfg. aluminium alloy wheel hub |
| CN101214605A (en) * | 2008-01-14 | 2008-07-09 | 张新颖 | Hub manufacturing technology |
| US20080219882A1 (en) * | 2005-09-30 | 2008-09-11 | Mathias Woydt | Method for Producing a Wear-Resistant Aluminum Alloy,An Aluminum Alloy Obtained According to the Method, and Ues Thereof |
| CN101758204A (en) * | 2008-11-12 | 2010-06-30 | 郑东海 | Process for smelting and gravity casting of aluminum alloy wheel hub |
| CN101829774A (en) * | 2010-05-25 | 2010-09-15 | 尤飞君 | Casting method of aluminum alloy wheel rim |
| CN102029383A (en) * | 2010-12-14 | 2011-04-27 | 何丙军 | Aluminum alloy wheel gravity casting die and casting method thereof |
| CN102941317A (en) * | 2012-11-20 | 2013-02-27 | 浙江今飞凯达轮毂股份有限公司 | Gravity-casting hub die and hub casting method |
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2016
- 2016-08-26 CN CN201610728947.3A patent/CN106086498B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080219882A1 (en) * | 2005-09-30 | 2008-09-11 | Mathias Woydt | Method for Producing a Wear-Resistant Aluminum Alloy,An Aluminum Alloy Obtained According to the Method, and Ues Thereof |
| CN1947893A (en) * | 2006-11-15 | 2007-04-18 | 黄伟锋 | Method for mfg. aluminium alloy wheel hub |
| CN101214605A (en) * | 2008-01-14 | 2008-07-09 | 张新颖 | Hub manufacturing technology |
| CN101758204A (en) * | 2008-11-12 | 2010-06-30 | 郑东海 | Process for smelting and gravity casting of aluminum alloy wheel hub |
| CN101829774A (en) * | 2010-05-25 | 2010-09-15 | 尤飞君 | Casting method of aluminum alloy wheel rim |
| CN102029383A (en) * | 2010-12-14 | 2011-04-27 | 何丙军 | Aluminum alloy wheel gravity casting die and casting method thereof |
| CN102941317A (en) * | 2012-11-20 | 2013-02-27 | 浙江今飞凯达轮毂股份有限公司 | Gravity-casting hub die and hub casting method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457531A (en) * | 2017-07-24 | 2017-12-12 | 安徽永昌金属制品有限公司 | Hub of motorcycle production technology |
| CN112126812A (en) * | 2019-06-24 | 2020-12-25 | 江门星火减震器有限公司 | Pouring process of aluminum alloy |
| CN113046584A (en) * | 2021-03-11 | 2021-06-29 | 科曼车辆部件***(苏州)有限公司 | Preparation method of thin-wall battery compartment end plate |
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| Publication number | Publication date |
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| CN106086498B (en) | 2018-07-03 |
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