CN106086498B - Aluminium alloy wheel hub gravity melt casting process - Google Patents
Aluminium alloy wheel hub gravity melt casting process Download PDFInfo
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- CN106086498B CN106086498B CN201610728947.3A CN201610728947A CN106086498B CN 106086498 B CN106086498 B CN 106086498B CN 201610728947 A CN201610728947 A CN 201610728947A CN 106086498 B CN106086498 B CN 106086498B
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- wheel hub
- aluminium alloy
- degasification
- alloy wheel
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (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, including at least following steps：A. it melts：Add coke fuel, open air blower, melting speed, The faster the better, when temperature of aluminum liquid reaches 730 DEG C~750 DEG C, is stirred 23 minutes with slag spoon；B. concise degasification：B1 goes bad, and sprinkles slagging agent, carries out slag hitting, then getter is hung in holding furnace, the pressure size for regulating nitrogen is 0.2~0.3MPa, treats that molten aluminum reach a certain height, starting switch when temperature reaches 715 DEG C ± 15 DEG C carries out the concise degasification of nitrogen, and the degasification time is 20 minutes；The process need to ensure that the depth that graphite rod is inserted into holding furnace is away from 180 220mm of crucible bottom；B2 takes clinker after thermometric, after the degasification time to 20 30 minutes, an al-sr alloy bar is added in into crucible, is stirred for thermometric after 25 35 seconds；B3 takes out clinker and stands 2~3 minutes later, poured into a mould.The technique of the present invention eliminates the defects of gas cinder hole, pin hole, segregation, the final quality for ensureing aluminium alloy wheel hub.
Description
Technical field
The present invention relates to casting aluminium alloy wheel hub technical field, more particularly to aluminium alloy wheel hub gravity melting and casting work
Skill.
Background technology
Existing aluminium alloy wheel hub is in casting process, due to processing step and the reason of equipment controls, passing through
Phenomena such as often will appear exceeded overproof gas cinder hole, pin hole, ingredient, ingredient burning, segregation, iron, other contaminant overstandards, by industry
Experience and analysis point out that these defects are mainly due to caused by the bad operation of some in production process and defective workmanship.
Main cause concentrates on：Temperature of aluminum liquid is too high, is refined to every nook and cranny, and refining agent is expired.Degassing effect is bad, pressure, flow
Not enough, nitrogen is impure.It adds in not in scale, easy scaling loss ingredient does not add on schedule.Aluminium temperature severely exceeds, and easily scaling loss Mg, molten aluminum
Retrogradation.It is not sufficiently stirred molten aluminum.Raw material iron-holder is high, and irony object, ironworker's tool soaking time in molten aluminum are accompanied in charging
Too long.Raw material contaminant overstandard is added in impurity material in charging, is not cleaned out.And the defects of some processing steps.
Note that still technologic defect is but had no idea gram when the reason of above-mentioned artificial, controllable, can pass through processing
Clothes.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides aluminium alloy wheel hub gravity melt casting process,
Purpose is to improve processing performance of the aluminium alloy wheel hub in gravity casting process, ensure the obtained aluminium alloy wheel hub of casting have compared with
Good quality, the defects of eliminating exceeded overproof gas cinder hole, pin hole, ingredient, ingredient burning, segregation, iron, other contaminant overstandards, most
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, including at least following steps：
A. it melts：Add coke fuel, open air blower, melting speed, The faster the better, when temperature of aluminum liquid reaches 730 DEG C~750
DEG C when, with slag spoon stir 2-3 minutes；
B. degasification is refined：
B1 goes bad, and sprinkles slagging agent, carries out slag hitting, then hangs in holding furnace getter, regulate the pressure of nitrogen
Size is 0.2~0.3MPa, treats that molten aluminum reach a certain height, starting switch when temperature reaches 715 DEG C ± 15 DEG C, carries out nitrogen essence
Degasification is refined, the degasification time is 20 minutes；The degassing procedure need to ensure that the depth that graphite rod is inserted into holding furnace is away from crucible bottom
180-220mm, otherwise molten aluminum can freeze in degasification stick and result in blockage；
B2 takes clinker after thermometric, and after the degasification time to 20-30 minutes, an al-sr alloy bar is added in into crucible, then
Thermometric after stirring 25-35 seconds, removes clinker；
B3 takes out clinker and stands 2~3 minutes later, can be poured into a mould；
Molten aluminum blibbing is often observed in degassing procedure, finds to stir in time during bubble, stirring in vain scoops bubble
Go out.
Further, in the step b1 for refining degassing process, ensure that the depth that graphite rod is inserted into holding furnace is away from crucible
Bottom 200mm；Clinker is taken after step b2 thermometrics, in the degasification time to after twenty minutes, an al-sr alloy bar is added in into crucible, then
Thermometric after stirring 30 seconds, removes clinker；B3 takes out clinker and stands 3 minutes later, can be poured into a mould.
Further, before aluminium alloy wheel hub gravity melting and casting, it is also necessary to be prepared as follows：
Tool prepares：It checks whether complete, in place；Casting ladle funnel preheats, and after spraying zinc oxide coating, baking is spare；
Material prepares：Zinc oxide and 34# coating are used as thermal insulation coatings, and 140# coating is used as cavity coating, and iron ring will preheat
To 350 DEG C~400 DEG C；
Grilled mold：Casting die is toasted using grilled mold device, the temperature of casting die uniformly reaches 200 DEG C~250 DEG C spray paints；
Spray paint：40# coating spray to cast modeling cavities are filled using spray gun, thin spray, is made using 34#, zinc oxide coating spray to cast
Mould riser, side form, thick spray；
Grilled mold again：Casting die is toasted using grilled mold device, when casting die baking temperature uniformly reaches 320 DEG C~350 DEG C, is extinguished
Flame；
Blowing mould：Sundries in mold is blown clean；
Put iron ring：With the tip-tap of aluminium hammer in place；
Molding：First close side form, after close mould；
Put strainer：The strainer of an a diameter of 160mm is put in funnel, a taper aluminium net is put in cast gate；
Put funnel：Funnel is placed on cast gate.
Further, after casting preparation is completed, it then follows following principles are poured into a mould：Scoop molten aluminum：Follow counter scoop just
Pour principle；Cast：A356 molten aluminums, it then follows " slow, fast, slow " principle.
Further, molding technique is carried out using hydraulic station or oil cylinder.
Compared with prior art, the beneficial effects of the invention are as follows：The aluminium alloy wheel hub gravity melt casting process of the present invention,
Aluminium alloy wheel hub be ensure that in melting and refining degasification the two technical process, in strict accordance with the technique and step of step A
The processing step of b1, b2, b3 carry out refining degasification in B, so as to ensure that the aluminium water before casting has good uniform performance.And
And the present invention also especially highlights aluminium alloy wheel hub and needs the concrete technology prepared before casting, such as：Tool prepares, material is accurate
Standby, grilled mold, spray paint, again grilled mold, blowing mould, put iron ring, mold, put strainer, put funnel, this few technique and step strict implement
Later, smooth outside can obtaining, internal flawless aluminium wheels.
Specific embodiment
In order to deepen the understanding of the present invention, with reference to embodiment, the present invention is further described, which only uses
In explaining the present invention, protection scope of the present invention is not formed and is limited.
Aluminium alloy wheel hub gravity melt casting process, including at least following steps：
A. it melts：Add coke fuel, open air blower, melting speed, The faster the better, when temperature of aluminum liquid reaches 730 DEG C~750
DEG C when, with slag spoon stir 2-3 minutes；
B. degasification is refined：
B1 goes bad, and sprinkles slagging agent, carries out slag hitting, then hangs in holding furnace getter, regulate the pressure of nitrogen
Size is 0.2~0.3MPa, treats that molten aluminum reach a certain height, starting switch when temperature reaches 715 DEG C ± 15 DEG C, carries out nitrogen essence
Degasification is refined, the degasification time is 20 minutes；The degassing procedure need to ensure that the depth that graphite rod is inserted into holding furnace is away from crucible bottom
180-220mm, otherwise molten aluminum can freeze in degasification stick and result in blockage；
B2 takes clinker after thermometric, in the degasification time to after twenty minutes, an al-sr alloy bar is added in into crucible, then stir
Thermometric after mixing 25-35 seconds, removes clinker；
B3 takes out clinker and stands 2~3 minutes later, can be poured into a mould；
Molten aluminum blibbing is often observed in degassing procedure, finds to stir in time during bubble, stirring in vain scoops bubble
Go out.
In the step b1 for refining degassing process, ensure that the depth that graphite rod is inserted into holding furnace is away from crucible bottom 200mm；Step
Clinker is taken after rapid b2 thermometrics, in the degasification time to after twenty minutes, an al-sr alloy bar is added in into crucible, is stirred for 30 seconds
Thermometric afterwards removes clinker；
B3 takes out clinker and stands 2~3 minutes later, can be poured into a mould.
Before aluminium alloy wheel hub gravity melting and casting, it is also necessary to be prepared as follows：
Tool prepares：It checks whether complete, in place；Casting ladle funnel preheats, and after spraying zinc oxide coating, baking is spare；
Material prepares：Zinc oxide and 34# coating are used as thermal insulation coatings, and 140# coating is used as cavity coating, and iron ring will preheat
To 350 DEG C~400 DEG C；
Grilled mold：Casting die is toasted using grilled mold device, the temperature of casting die uniformly reaches 200 DEG C~250 DEG C spray paints；
Spray paint：40# coating spray to cast modeling cavities are filled using spray gun, thin spray, is made using 34#, zinc oxide coating spray to cast
Mould riser, side form, thick spray；
Grilled mold again：Casting die is toasted using grilled mold device, when casting die baking temperature uniformly reaches 320 DEG C~350 DEG C, is extinguished
Flame；
Blowing mould：Sundries in mold is blown clean；
Put iron ring：With the tip-tap of aluminium hammer in place；
Molding：First close side form, after close mould；
Put strainer：The strainer of an a diameter of 160mm is put in funnel, a taper aluminium net is put in cast gate；
Put funnel：Funnel is placed on cast gate.
After casting preparation is completed, it then follows following principles are poured into a mould：
Scoop molten aluminum：It follows counter scoop and just pours principle；Cast：A356 molten aluminums, it then follows " slow, fast, slow " principle.
Technique is molded to carry out using hydraulic station or oil cylinder.
By above-mentioned cast, ensure the aluminium alloy wheel hub that A356 molten aluminums are poured into a mould, meet following table component requirements：
The constituent content table of 1 A356 aluminium alloy wheel hubs of table
The present invention aluminium alloy wheel hub gravity melt casting process, ensure that aluminium alloy wheel hub melt and refine degasification this
In two technical process, refining degasification is carried out in strict accordance with the processing step of b1, b2, b3 in the technique of step A and step B,
So as to ensure that the aluminium water before casting has good uniform performance.And the present invention also especially highlights aluminium alloy wheel hub and is casting
The concrete technology prepared is needed before making, such as：Tool preparation, material preparation, grilled mold, spray paint, again grilled mold, blowing mould, put iron ring, close
Mould puts strainer, puts funnel, after this few technique and step strict implement, can obtain that outside is smooth, internal flawless aluminium
Wheel hub.
What the embodiment of the present invention was announced is preferred embodiment, and however, it is not limited to this, the ordinary skill people of this field
Member easily according to above-described embodiment, understands the spirit of the present invention, and makes different amplification and variation, but as long as not departing from this
The spirit of invention, all within the scope of the present invention.
Claims (3)
1. aluminium alloy wheel hub gravity melt casting process, it is characterised in that：Before aluminium alloy wheel hub gravity melting and casting, it is also necessary into
Row is following to be prepared：
Tool prepares：It checks whether complete, in place；Casting ladle funnel preheats, and after spraying zinc oxide coating, baking is spare；
Material prepares：Zinc oxide and 34# coating are used as thermal insulation coatings, and 140# coating is used as cavity coating, and iron ring will be preheated to 350
DEG C~400 DEG C；
Grilled mold：Casting die is toasted using grilled mold device, the temperature of casting die uniformly reaches 200 DEG C~250 DEG C spray paints；
Spray paint：40# coating spray to cast modeling cavities are filled using spray gun, thin spray, is emitted using 34#, zinc oxide coating spray to cast modeling
Mouth, side form, thick spray；
Grilled mold again：Casting die is toasted using grilled mold device, when casting die baking temperature uniformly reaches 320 DEG C~350 DEG C, extinguishes fire
Flame；
Blowing mould：Sundries in mold is blown clean；
Put iron ring：With the tip-tap of aluminium hammer in place；
Molding：First close side form, after close mould；
Put strainer：The strainer of an a diameter of 160mm is put in funnel, a taper aluminium net is put in cast gate；
Put funnel：Funnel is placed on cast gate
Gravity melt casting process at least further includes following steps：
A. it melts：Add coke fuel, open air blower, The faster the better for burn-off rate, when temperature of aluminum liquid reaches 730 DEG C~750 DEG C
When, it is stirred 2-3 minutes with slag spoon；
B. degasification is refined：
B1 goes bad, and sprinkles slagging agent, carries out slag hitting, then hangs in holding furnace getter, regulate the pressure size of nitrogen
For 0.2~0.3MPa, treat that molten aluminum reach a certain height, starting switch when temperature reaches 715 DEG C ± 15 DEG C carries out nitrogen refining and removes
Gas, degasification time are 20 minutes；The degassing procedure need to ensure the depth that graphite rod is inserted into holding furnace be away from crucible bottom 200mm,
Otherwise molten aluminum can freeze in degasification stick and result in blockage；
B2 takes clinker after thermometric, in the degasification time to after twenty minutes, an al-sr alloy bar is added in into crucible, is stirred for again
Thermometric after stirring 30 seconds, removes clinker；
B3 takes out clinker and stands 3 minutes later, can be poured into a mould；
Molten aluminum blibbing is often observed in degassing procedure, finds to stir in time during bubble, stirring in vain scoops out bubble.
2. aluminium alloy wheel hub gravity melt casting process according to claim 1, it is characterised in that：Casting beam worker is finished
Into later, it then follows following principles are poured into a mould：
Scoop molten aluminum：It follows counter scoop and just pours principle；Cast：A356 molten aluminums, it then follows " slow, fast, slow " principle.
3. aluminium alloy wheel hub gravity melt casting process according to claim 1, it is characterised in that：It molds technique and uses liquid
Pressure station or oil cylinder carry out.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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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| Publication Number | Publication Date |
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| CN106086498A CN106086498A (en) | 2016-11-09 |
| CN106086498B true CN106086498B (en) | 2018-07-03 |
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| CN201610728947.3A Active CN106086498B (en) | 2016-08-26 | 2016-08-26 | Aluminium alloy wheel hub gravity melt casting process |
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Families Citing this family (4)
| 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 | 科曼车辆部件系统(苏州)有限公司 | Preparation method of thin-wall battery compartment end plate |
| CN116083763A (en) * | 2023-02-07 | 2023-05-09 | 中铁建电气化局集团轨道交通器材有限公司 | Aluminum alloy for overhead contact system and gravity casting and heat treatment method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005047037A1 (en) * | 2005-09-30 | 2007-04-19 | BAM Bundesanstalt für Materialforschung und -prüfung | Motorized mating of an aluminum base alloy |
-
2016
- 2016-08-26 CN CN201610728947.3A patent/CN106086498B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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