CN104525899A - Casting process for vacuum casting household appliance mold aluminum alloy castings - Google Patents
Casting process for vacuum casting household appliance mold aluminum alloy castings Download PDFInfo
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- CN104525899A CN104525899A CN201410779362.5A CN201410779362A CN104525899A CN 104525899 A CN104525899 A CN 104525899A CN 201410779362 A CN201410779362 A CN 201410779362A CN 104525899 A CN104525899 A CN 104525899A
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- casting
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- aluminium alloy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
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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
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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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0005—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with at least one oxide and at least one of carbides, nitrides, borides or silicides as the main non-metallic constituents
Abstract
A casting process for vacuum casting household appliance mold aluminum alloy castings includes the following process steps of firstly, preparing aluminum alloy, wherein 9 wt% of silicon carbide, 0.3 wt% of manganese, 0.2 wt% of magnesium, 0.2 wt% of iron, 0.08 wt% of titanium dioxide, 1.5 wt% of rare earth, 0.1 wt% of zinc, 0.007 wt% of tin, 1.5 wt% of auxiliaries and the balance aluminum are weighed; secondly, reasonably controlling the temperature of liquid aluminum in the aluminum alloy smelting process, and conducting slag removal when the temperature of the liquid aluminum reaches 690 DEG C, wherein the deterioration processing temperature ranges from 705 DEG C to 715 DEG C, and the blowing refining temperature ranges from 725 DEG C to 735 DEG C; thirdly, making the refine liquid aluminum stand for a period of time, and then conducting slagging off, wherein due to the fact that pipelines are arranged, the temperature of the liquid aluminum needs to be slightly lowered, and the final liquid aluminum casting temperature for casting pipeline-contained castings is controlled between 695 DEG C and 705 DEG C; fourthly, opening a box and taking out the castings after the castings naturally cool. By improving the formula of traditional aluminum alloy, new beneficial elements are added, the manufactured pipelines are not prone to deformation, and the economic benefits are good.
Description
Technical field
The present invention relates to casting technology field, be specifically related to a kind of vacuum pressing and casting electronic appliance mold aluminium alloy castings casting process.
Background technology
Household electrical appliances die for inner is the one of vacuum plastics sucking moulding, and ABS plastic, by heating mould, is then softened plastics sucking moulding by refrigerator producer.The heating of mould is realized by the water pipe be embedded in inside aluminium alloy castings, and circulate hot water in water pipe, realizes controlling the temperature of unitary mould by control discharge and temperature.
At present, general employing Sand Moulding Process casting household electrical appliances die for inner, water pipe pre-buried, by making tube seat in advance on sand mold, then the shape of tube seat is worked it out by moulding, the copper pipe bent according to tube seat size in advance or stainless steel tube are placed in tube seat, by using the iron wire pipe clamp of U-shaped, pipeline is fixed, then block with the two ends of damp sand by pipeline, reserve interface position, pre-buried copper pipe or stainless steel tube will scribble one deck graphite, play the heat insulation effect preventing softening and prevent aluminium liquid circulation copper pipe from entering pipeline.Traditional aluminum alloy material performance is comparatively single, cold-resistant, heat resistance is poor.
Summary of the invention
It is simple that technical problem to be solved by this invention is to provide a kind of method, the vacuum pressing and casting electronic appliance mold aluminium alloy castings casting process of good heat-insulation effect.
Technical problem to be solved by this invention realizes by the following technical solutions:
A kind of vacuum pressing and casting electronic appliance mold aluminium alloy castings casting process, comprises following processing step:
1) aluminium alloy is prepared:
Following component is taken according to percentage by weight:
Carborundum 8.0-10.5%
Manganese 0.2-0.5%
Magnesium 0.15-0.35%
Iron 0.05-0.6%
Titanium dioxide crystal whisker 0.05-0.1%
Rare earth 0.5-2%
Zinc 0.05-0.25%
Tin 0.005-0.01%
Auxiliary agent 0.5-2%
Aluminium surplus;
Above-mentioned auxiliary agent is made up of following % by weight component counted: Graphene 5%, potassium titanate crystal whisker 10%, boron nitride 2%, pyrite cinder 5%, slaked lime powder 2%, talcum powder 0.5%, lucium 2%, aquamaine stone flour 0.5%, calcined kaolin 0.5%;
2) aluminium alloy smelting:
Reasonably will control temperature of aluminum liquid during aluminium alloy smelting well, remove the gred when temperature of aluminum liquid reaches 690 DEG C, the temperature of Metamorphism treatment is at 705-715 DEG C, and the temperature of blowing refining is at 725-735 DEG C;
3) aluminium liquid casting:
Skim after aluminium liquid after refining leaves standstill a period of time, because containing pipeline, temperature of aluminum liquid needs lower slightly, and casting controls at 695-705 DEG C containing the last aluminium liquid cast temperature of pipe foundry goods;
4) foundry goods is unpacked after naturally cooling and is taken out foundry goods.
The preparation method of above-mentioned auxiliary agent is: be decentralized medium by potassium titanate crystal whisker, boron nitride, pyrite cinder, slaked lime powder, talcum powder, aquamaine stone flour and calcined kaolin powder with absolute ethyl alcohol, wherein the mass ratio of powder and ethanol is 1:30, ultrasonic disperse 1 hour on supersonic cleaning machine; Compound through ultrasonic disperse is put into nylon ball grinder, adds Graphene and lucium take agate ball as abrading-ball, ball material mass ratio is 7:1, be under the condition of 150 revs/min at rotating speed, continuous ball milling 2 hours in ball mill, pours in powder dish by powder complete for ball milling together with agate abrading-ball, dries at 80 DEG C, the powder of drying is sieved, take out agate abrading-ball, then mixed powder is ground, till the larger reunion of nothing, so far, modified foaming agent is prepared complete.
The invention has the beneficial effects as follows: the present invention is by improving the formula of conventional aluminum alloy, add new beneficial element, the cast of preparation is not yielding, good in economic efficiency, decrease traditional preparation process, reduce production cost, the double action of the thickening that blowing agent has and foaming increases the porosity of foamed aluminium.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
A kind of vacuum pressing and casting electronic appliance mold aluminium alloy castings casting process, comprises following processing step:
1) aluminium alloy is prepared:
Following component is taken: carborundum 9%, manganese 0.3%, magnesium 0.2%, iron 0.2%, titanium dioxide crystal whisker 0.08%, rare earth 1.5%, zinc 0.1%, tin 0.007%, auxiliary agent 1.5%, aluminium surplus according to percentage by weight;
Above-mentioned auxiliary agent is made up of following % by weight component counted: Graphene 5%, potassium titanate crystal whisker 10%, boron nitride 2%, pyrite cinder 5%, slaked lime powder 2%, talcum powder 0.5%, lucium 2%, aquamaine stone flour 0.5%, calcined kaolin 0.5%;
2) aluminium alloy smelting:
Reasonably will control temperature of aluminum liquid during aluminium alloy smelting well, remove the gred when temperature of aluminum liquid reaches 690 DEG C, the temperature of Metamorphism treatment is at 705-715 DEG C, and the temperature of blowing refining is at 725-735 DEG C;
3) aluminium liquid casting:
Skim after aluminium liquid after refining leaves standstill a period of time, because containing pipeline, temperature of aluminum liquid needs lower slightly, and casting controls at 695-705 DEG C containing the last aluminium liquid cast temperature of pipe foundry goods;
4) foundry goods is unpacked after naturally cooling and is taken out foundry goods.
The preparation method of above-mentioned auxiliary agent is: be decentralized medium by potassium titanate crystal whisker, boron nitride, pyrite cinder, slaked lime powder, talcum powder, aquamaine stone flour and calcined kaolin powder with absolute ethyl alcohol, wherein the mass ratio of powder and ethanol is 1:30, ultrasonic disperse 1 hour on supersonic cleaning machine; Compound through ultrasonic disperse is put into nylon ball grinder, adds Graphene and lucium take agate ball as abrading-ball, ball material mass ratio is 7:1, be under the condition of 150 revs/min at rotating speed, continuous ball milling 2 hours in ball mill, pours in powder dish by powder complete for ball milling together with agate abrading-ball, dries at 80 DEG C, the powder of drying is sieved, take out agate abrading-ball, then mixed powder is ground, till the larger reunion of nothing, so far, modified foaming agent is prepared complete.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. a vacuum pressing and casting electronic appliance mold aluminium alloy castings casting process, is characterized in that, comprise following processing step:
1) aluminium alloy is prepared:
Following component is taken according to percentage by weight:
Carborundum 8.0-10.5%
Manganese 0.2-0.5%
Magnesium 0.15-0.35%
Iron 0.05-0.6%
Titanium dioxide crystal whisker 0.05-0.1%
Rare earth 0.5-2%
Zinc 0.050.25%
Tin 0.005-0.01%
Auxiliary agent 0.5-2%
Aluminium surplus;
2) aluminium alloy smelting:
Reasonably will control temperature of aluminum liquid during aluminium alloy smelting well, remove the gred when temperature of aluminum liquid reaches 690 DEG C, the temperature of Metamorphism treatment is at 705-715 DEG C, and the temperature of blowing refining is at 725-735 DEG C;
3) aluminium liquid casting:
Skim after aluminium liquid after refining leaves standstill a period of time, because containing pipeline, temperature of aluminum liquid needs lower slightly, and casting controls at 695-705 DEG C containing the last aluminium liquid cast temperature of pipe foundry goods;
4) foundry goods is unpacked after naturally cooling and is taken out foundry goods.
2. vacuum pressing and casting electronic appliance mold aluminium alloy castings casting process according to claim 1, it is characterized in that, above-mentioned auxiliary agent is made up of following % by weight component counted: Graphene 5%, potassium titanate crystal whisker 10%, boron nitride 2%, pyrite cinder 5%, slaked lime powder 2%, talcum powder 0.5%, lucium 2%, aquamaine stone flour 0.5%, calcined kaolin 0.5%.
3. vacuum pressing and casting electronic appliance mold aluminium alloy castings casting process according to claim 2, it is characterized in that, the preparation method of above-mentioned auxiliary agent is: be decentralized medium by potassium titanate crystal whisker, boron nitride, pyrite cinder, slaked lime powder, talcum powder, aquamaine stone flour and calcined kaolin powder with absolute ethyl alcohol, wherein the mass ratio of powder and ethanol is 1:30, ultrasonic disperse 1 hour on supersonic cleaning machine; Compound through ultrasonic disperse is put into nylon ball grinder, adds Graphene and lucium take agate ball as abrading-ball, ball material mass ratio is 7:1, be under the condition of 150 revs/min at rotating speed, continuous ball milling 2 hours in ball mill, pours in powder dish by powder complete for ball milling together with agate abrading-ball, dries at 80 DEG C, the powder of drying is sieved, take out agate abrading-ball, then mixed powder is ground, till the larger reunion of nothing, so far, modified foaming agent is prepared complete.
Priority Applications (1)
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| CN201410779362.5A CN104525899B (en) | 2014-12-15 | 2014-12-15 | Vacuum pressing and casting electronic appliance mold aluminium alloy castings casting process |
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| CN201410779362.5A CN104525899B (en) | 2014-12-15 | 2014-12-15 | Vacuum pressing and casting electronic appliance mold aluminium alloy castings casting process |
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| CN104525899A true CN104525899A (en) | 2015-04-22 |
| CN104525899B CN104525899B (en) | 2016-08-17 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106738512A (en) * | 2016-12-13 | 2017-05-31 | 柳州通为机械有限公司 | Oblique rubber tire placenta |
| CN108104571A (en) * | 2017-12-27 | 2018-06-01 | 山东泰义金属科技有限公司 | A kind of aluminium alloy communications tower |
| CN109529638A (en) * | 2018-12-25 | 2019-03-29 | 武汉艾科滤膜技术有限公司 | A kind of high temperature resistant precision molecular cut off ultrafiltration membrane and preparation method thereof |
| CN113355544A (en) * | 2021-05-29 | 2021-09-07 | 安徽佳之合新材料科技有限公司 | Manufacturing process of cast special-shaped aluminum alloy railing |
| CN113621840A (en) * | 2021-07-12 | 2021-11-09 | 南京公诚石油技术有限公司 | Enhanced metal alloy processing technology for descaling |
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| CN101474668A (en) * | 2009-01-13 | 2009-07-08 | 通州市四安球墨铸铁有限公司 | Method for casting aluminium alloy |
| EP2127782A1 (en) * | 2007-01-22 | 2009-12-02 | Kabushiki Kaisha Toyota Chuo Kenkyusho | Aluminum alloy casting material, method for production of the aluminum alloy casting material, aluminum alloy material, and method for production of aluminum alloy material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106738512A (en) * | 2016-12-13 | 2017-05-31 | 柳州通为机械有限公司 | Oblique rubber tire placenta |
| CN108104571A (en) * | 2017-12-27 | 2018-06-01 | 山东泰义金属科技有限公司 | A kind of aluminium alloy communications tower |
| CN109529638A (en) * | 2018-12-25 | 2019-03-29 | 武汉艾科滤膜技术有限公司 | A kind of high temperature resistant precision molecular cut off ultrafiltration membrane and preparation method thereof |
| CN113355544A (en) * | 2021-05-29 | 2021-09-07 | 安徽佳之合新材料科技有限公司 | Manufacturing process of cast special-shaped aluminum alloy railing |
| CN113621840A (en) * | 2021-07-12 | 2021-11-09 | 南京公诚石油技术有限公司 | Enhanced metal alloy processing technology for descaling |
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| CN104525899B (en) | 2016-08-17 |
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