CN105728692A - Pure aluminum pressure casting method - Google Patents
Pure aluminum pressure casting method Download PDFInfo
- Publication number
- CN105728692A CN105728692A CN201610263639.8A CN201610263639A CN105728692A CN 105728692 A CN105728692 A CN 105728692A CN 201610263639 A CN201610263639 A CN 201610263639A CN 105728692 A CN105728692 A CN 105728692A
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- CN
- China
- Prior art keywords
- aluminum
- mould
- liquid
- mold
- casting method
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/22—Dies; Die plates; Die supports; Cooling equipment for dies; Accessories for loosening and ejecting castings from dies
- B22D17/2272—Sprue channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/002—Castings of light metals
- B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
Abstract
A pure aluminum pressure casting method comprises the steps: heating solid aluminum to liquid, wherein liquid aluminum is at 730-790 DEG C; injecting the liquid aluminum into a pressure shooting barrel; shooting the liquid aluminum into a cavity of a mold by the pressure shooting barrel, wherein a gate of the mold is >/=3 mm, drawing inclination of the mold is >/=2 degrees, and the mold is at 180-240 DEG C; after the mold is subjected to cooling under held pressure to reach a cooling threshold, separating upper and lower parts of the mold; ejecting out a casting formed in the cavity of the mold. In regard to the characteristic that pure aluminum has a melting point typically higher than pressure cast aluminum, by increasing the drawing inclination of the mold, increasing the width of the gate and the mold temperature, increasing the temperature of material and improving fluidity of the aluminum in the mold during pressure shooting, the aluminum is enabled to quickly fill the cavity of the mold during the pressure casting process and the filling process of a casting is complete.
Description
Technical field
The present invention relates to die cast metal method, particularly relate to a kind of fine aluminium pressure casting method.
Background technology
Traditional die casting aluminium is the alloy of aluminum and other metal (such as copper, magnesium, zinc, ferrum etc.).Use die casting
The foundry goods of aluminum die casting, when processing on surface, can only carry out common dusting, oil spout, can not do anode
Oxidation processes, the appearance color so making the foundry goods that die casting aluminium makes is more dull, and texture is poor.And
Relatively with traditional die casting aluminium, the foundry goods of fine aluminium die casting has good anode performance, at oxidation
Reason is possible not only to carry out the coloring of bright-colored miscellaneous, and the oxide-film that anode produces has necessarily
Antiacid caustic corrosion, sun-resistant non-discoloring performance, have the metal-like same with extrudate, it is possible to
Meet the demand that color is required higher client.
Owing to the fusing point of fine aluminium is higher than traditional die casting aluminium, traditional pressure casting method is used to carry out die casting fine aluminium, raw
During product, the mobility of liquid aluminium is the poorest, can cause foundry goods to fill type imperfect, therefore, traditional die casting
Aluminum method is not suitable for fine aluminium Die Casting.
Summary of the invention
Based on this, it is provided that a kind of fine aluminium pressure casting method being applicable to fine aluminium Die Casting.
A kind of fine aluminium pressure casting method, comprises the following steps:
The aluminum of solid-state is heated to liquid, and wherein, described aluminum temperature in the liquid state is 730 DEG C-790 DEG C；Institute
State and the aluminum of solid-state is heated to liquid includes step: join after aluminum is fused into liquid in moist closet, protecting
In greenhouse, the aluminum to liquid carries out refine and takes off Slag treatment, after refine and taking off Slag treatment, enters the aluminum of liquid
Row degassing processing；
The aluminum of liquid is injected in injection cylinder；
The aluminum of liquid is injected in the die cavity of mould by described injection cylinder, wherein, described mould enter cast gate width
Degree >=3mm；Pattern draft >=2 ° of described mould, the mould temperature of described mould is set to 180 DEG C-240 DEG C；
It is sprayed with releasing agent in the die cavity of described mould；
Mould carries out pressurize cooling reach to cool down after threshold value, the upper die and lower die of mould are separated；
The foundry goods of molding in the die cavity of mould is ejected, uses sawing machine excision to prepare by described fine aluminium pressure casting method
The mouth of a river of foundry goods.
Wherein in a kind of embodiment, in the die cavity of mould, it is sprayed with heat insulating ability coating.
Above-mentioned fine aluminium pressure casting method, for the fusing point of fine aluminium more than the feature of general die casting aluminium, by strengthening
The pattern draft of mould, entering cast gate width and Mo Wen, and improve the material temperature of raw material, when increasing injection, aluminum exists
Mobility in mould so that in press casting procedure, aluminum is full of the die cavity of mould rapidly, it is ensured that foundry goods fill type
Completely.Liquid aluminium leaves in moist closet, carries out refine and skims to improve the purity of material.Degassing processing
The bubble in the aluminum of liquid can be removed, it is to avoid the existence internal voids in the workpiece after molding.The demoulding can reduce
The workpiece of molding and the viscosity of the die cavity of mould, depanning is convenient.After die casting, need foundry goods
Carry out mouth of a river operation, owing to the hardness of fine aluminium is less, need use sawing machine remove the mouth of a river, prevent foundry goods because of
External force and deform.
Additionally, the control that spray coating heat preservation material makes mould temperature is more stable.
Accompanying drawing explanation
Fig. 1 is the flow sheet of the fine aluminium pressure casting method of one embodiment of the present invention.
Detailed description of the invention
By inventive feature, technological means and the specific purposes reached, function can be further appreciated that,
Resolve the advantages and spirit of the present invention, by below in conjunction with accompanying drawing and the detailed description of the invention detailed description to the present invention
It is further understood.
Referring to accompanying drawing 1, it is the flow sheet of fine aluminium pressure casting method of one embodiment of the present invention.
This fine aluminium pressure casting method, including step S110-step S150, specific as follows:
Step S110: the aluminum of solid-state is heated to liquid, wherein, described aluminum temperature in the liquid state is 730 DEG C
-790℃.By the temperature of the aluminum of high-temperature heating to liquid, i.e. material temperature, control at 730 DEG C-790 DEG C.Fine aluminium
Fusing point is at about 600.4 DEG C, it is therefore desirable to allows aluminum be maintained at higher temperature and just can ensure that one is directly in liquid.
Step S120: the aluminum of described liquid is injected in the injection cylinder of die casting equipment.
Step S130: liquid aluminium is injected in the die cavity of mould by described injection cylinder via the cast gate that enters of mould,
Wherein, the width >=3mm of cast gate, pattern draft >=2 ° of described mould, the mould temperature of described mould are entered described in
It is set to 180 DEG C-240 DEG C.Injection cylinder under high-pressure forces by the aluminum of the liquid in cylinder rapidly from entering cast gate
It is injected in mould.And widen the width beneficially liquid aluminium into cast gate and be injected into the type of mould more rapidly
In chamber.Mould temperature refers to the temperature that mould keeps aborning, is typically monitored and controlled by die heater.Pin
Fusing point to fine aluminium is higher than the fusing point of general die casting aluminium, improves the mould temperature of mould.Withdrawing pattern is set in a mold
Gradient is in order to foundry goods depanning is convenient, improves production efficiency.
Step S140: mould is carried out pressurize cooling and reaches to cool down after threshold value, the upper die and lower die of mould are divided
From.After injection, the aluminum of liquid is filled up completely with the die cavity of mould, then needs to be continuously applied mould
Pressure, and wait the foundry goods cooling molding in mould.After mould reaches to cool down threshold value, by the upper mold of mould
Separate with lower mold.In general, the cooling threshold value of aluminum is aluminum temperature when settable liquid becomes solid-state.
Step S150: the foundry goods of molding in the die cavity of mould is ejected.
Above-mentioned fine aluminium pressure casting method, for the fusing point of fine aluminium more than the feature of general die casting aluminium, by adding
The pattern draft of big mould, enter cast gate width and Mo Wen, and improve the material temperature of raw material, aluminum when increasing injection
Mobility in a mold so that in press casting procedure, the aluminum of liquid is full of the die cavity of mould rapidly, it is ensured that casting
Part to fill type complete.
Additionally, the purity of the efficiency and foundry goods in order to improve die casting, the fine aluminium pressure casting method of the present invention is all right
Improvement means including following:
Wherein in a kind of embodiment, also include:
Sawing machine excision is used to prepare the mouth of a river of foundry goods by above-mentioned fine aluminium pressure casting method.After die casting, need
Foundry goods is gone the operation at the mouth of a river, owing to the hardness of fine aluminium is less, needs to use sawing machine to remove the mouth of a river, anti-
During only going to the mouth of a river, foundry goods deforms because of external force.
Wherein in a kind of embodiment, fusing step also includes:
Join after aluminum is fused into liquid in moist closet, in moist closet, the aluminum of liquid is carried out refine and takes off
Slag treatment.The aluminum of liquid, in moist closet, carries out refine and skims and can improve the purity of material.
Wherein in a kind of embodiment, after refine and taking off Slag treatment, the aluminum of liquid is carried out degassing processing.
Deaeration step can be completed by getter.Degassing processing can remove the bubble in the aluminum of liquid, it is to avoid molding
After foundry goods in there is internal voids.
Wherein in a kind of embodiment, in the die cavity of mould, it is sprayed with heat insulating ability coating.Spray coating heat preservation material energy
The control making mould temperature is more stable.
Wherein in a kind of embodiment, in the die cavity of mould, it is sprayed with releasing agent.Releasing agent (mold discharging
Agent) being a kind of functional materials between mould and finished product, it has chemical resistance, from different
The chemical analysis (particularly styrene and amine) of resin is not dissolved when contacting.And, releasing agent also has
There is heat-resisting and stress performance, be not easily decomposed or wear and tear.When releasing agent is adhered on mould, do not transfer to
On processed product, do not hinder and spray paint or other secondary machining operation, thus can reduce the workpiece of molding with
The viscosity of the die cavity of mould so that foundry goods depanning is convenient.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is as the criterion.
Claims (2)
1. a fine aluminium pressure casting method, it is characterised in that comprise the following steps:
The aluminum of solid-state is heated to liquid, and wherein, described aluminum temperature in the liquid state is 730 DEG C-790 DEG C；Institute
State and the aluminum of solid-state is heated to liquid includes step: join after aluminum is fused into liquid in moist closet, protecting
In greenhouse, the aluminum to liquid carries out refine and takes off Slag treatment, after refine and taking off Slag treatment, enters the aluminum of liquid
Row degassing processing；
The aluminum of liquid is injected in injection cylinder；
The aluminum of liquid is injected in the die cavity of mould by described injection cylinder, wherein, described mould enter cast gate width
Degree >=3mm；Pattern draft >=2 ° of described mould, the mould temperature of described mould is set to 180 DEG C-240 DEG C；
It is sprayed with releasing agent in the die cavity of described mould；
Mould carries out pressurize cooling reach to cool down after threshold value, the upper die and lower die of mould are separated；
The foundry goods of molding in the die cavity of mould is ejected, uses sawing machine excision to prepare by described fine aluminium pressure casting method
The mouth of a river of foundry goods.
Fine aluminium pressure casting method the most according to claim 1, it is characterised in that in the die cavity of described mould
It is sprayed with heat insulating ability coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610263639.8A CN105728692A (en) | 2014-05-12 | 2014-05-12 | Pure aluminum pressure casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610263639.8A CN105728692A (en) | 2014-05-12 | 2014-05-12 | Pure aluminum pressure casting method |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410199370.2A Division CN103949604B (en) | 2014-05-12 | 2014-05-12 | Fine aluminium pressure casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105728692A true CN105728692A (en) | 2016-07-06 |
Family
ID=56285558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610263639.8A Pending CN105728692A (en) | 2014-05-12 | 2014-05-12 | Pure aluminum pressure casting method |
Country Status (1)
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| CN (1) | CN105728692A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048669A (en) * | 2017-12-25 | 2018-05-18 | 福建奋安铝业有限公司 | A kind of smelting technology of the founding aluminium bar of aluminium profiles timber-used |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63199060A (en) * | 1986-09-18 | 1988-08-17 | Ryobi Ltd | Metallic core for high pressure casting and its production |
| WO1989012518A1 (en) * | 1988-06-13 | 1989-12-28 | Tour & Andersson Ab | Method and device for pressure die casting |
| CN101758198A (en) * | 2008-10-24 | 2010-06-30 | 吴江市天龙机械有限公司 | Casting die for roller of gyroscope motor |
| CN102151817A (en) * | 2011-03-25 | 2011-08-17 | 江苏时代华宜电子科技有限公司 | Die-casting method of aluminum threaded hole machining substrate of aluminum-silicon carbide base plate |
| CN102185426A (en) * | 2011-04-22 | 2011-09-14 | 吴江市天龙机械有限公司 | Method for processing novel aluminum-alloy die casting squirrel cage rotor |
| CN102223027A (en) * | 2011-06-14 | 2011-10-19 | 吴江市天龙机械有限公司 | Casting technology for gyroscope motor rotor |
-
2014
- 2014-05-12 CN CN201610263639.8A patent/CN105728692A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63199060A (en) * | 1986-09-18 | 1988-08-17 | Ryobi Ltd | Metallic core for high pressure casting and its production |
| WO1989012518A1 (en) * | 1988-06-13 | 1989-12-28 | Tour & Andersson Ab | Method and device for pressure die casting |
| CN101758198A (en) * | 2008-10-24 | 2010-06-30 | 吴江市天龙机械有限公司 | Casting die for roller of gyroscope motor |
| CN102151817A (en) * | 2011-03-25 | 2011-08-17 | 江苏时代华宜电子科技有限公司 | Die-casting method of aluminum threaded hole machining substrate of aluminum-silicon carbide base plate |
| CN102185426A (en) * | 2011-04-22 | 2011-09-14 | 吴江市天龙机械有限公司 | Method for processing novel aluminum-alloy die casting squirrel cage rotor |
| CN102223027A (en) * | 2011-06-14 | 2011-10-19 | 吴江市天龙机械有限公司 | Casting technology for gyroscope motor rotor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048669A (en) * | 2017-12-25 | 2018-05-18 | 福建奋安铝业有限公司 | A kind of smelting technology of the founding aluminium bar of aluminium profiles timber-used |
| CN108048669B (en) * | 2017-12-25 | 2019-06-25 | 福建奋安铝业有限公司 | A kind of smelting technology of the founding aluminium bar of aluminum profile |
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Application publication date: 20160706 |
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