CN108018449A - A kind of coverture for aluminium alloy smelting and preparation method thereof - Google Patents
A kind of coverture for aluminium alloy smelting and preparation method thereof Download PDFInfo
- Publication number
- CN108018449A CN108018449A CN201711313473.7A CN201711313473A CN108018449A CN 108018449 A CN108018449 A CN 108018449A CN 201711313473 A CN201711313473 A CN 201711313473A CN 108018449 A CN108018449 A CN 108018449A
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- coverture
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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
-
- 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)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
A kind of coverture for aluminium alloy smelting and preparation method thereof and preparation method thereof, it is characterised in that it is made of the component of following mass fraction：20 40 parts of potassium chloride, 20 40 parts of sodium chloride, 5 15 parts of lithium chloride, 35 parts of potassium fluoride, 13 parts of niter cake, 35 parts of prodan.Preparation method is as follows：(1) each component is configured according to ratio of weight and number；(2) each raw material is sufficiently mixed and stirred evenly, mixture obtained by step (2) is put into oven and is dried by (3), and drying temperature is 290 300 DEG C；(4) mixture after drying is crushed, it is powdered is screened into 80 100 mesh；(5) packed with waterproof plastic bag.The coverture configuration technique of the present invention can effectively improve the insulation of coverture, and fusion temperature is suitable, and fusing is quick, form one layer of oily film in cast(ing) surface, can effectively prevent casting oxidization burning loss, air-breathing.With stronger chemical stability and heat endurance, there is no corrosiveness to molten aluminum and furnace lining, ensure that the original composition of alloy and performance.
Description
Technical field
The present invention relates to a kind of coverture for aluminium alloy smelting and preparation method thereof, belong to aluminum alloy smelting field.
Background technology
Aluminium alloy is most widely used one kind non-ferrous metal structural material in industry, in Aeronautics and Astronautics, automobile, machinery
Widely applied in manufacture, ship and chemical industry.But aluminium is the active metal of comparison, its easy shape during melting under air
Into the slag inclusion and absorption gas of oxide, if these oxides and gas enter ingot casting with melt, it will form slag inclusion；Oxidation
Film, stomata, loose or other defect, reduce physical property, the corrosion resistance of product, can also deteriorate the processing technology of alloy
Performance, the main reason for causing such case be protective effect that coverture now used rises before the fusing of aluminium chip too
It is weak, aluminium chip is directly heated into fusing (namely often saying that air-ground stove feeds intake) if being added without molten aluminum.Aluminium chip is melting
Vigorous oxidation will occur before, cause the reduction of casting yield.
The content of the invention
The present invention to solve the above problems, provide a kind of coverture for aluminium alloy smelting and preparation method thereof, it
It is to be made of the component of following mass fraction：20-40 parts of potassium chloride, 20-40 parts of sodium chloride, 5-15 parts of lithium chloride, potassium fluoride 3-5
Part, 1-3 parts of niter cake, 3-5 parts of prodan.
Preparation method is as follows：(1) each component is configured according to ratio of weight and number；(2) each raw material is sufficiently mixed and stirred evenly,
(3) mixture obtained by step (2) is put into oven and is dried, drying temperature is 290-300 DEG C；(4) by after drying
Mixture is crushed, and it is powdered to be screened into 80-100 mesh；(5) packed with waterproof plastic bag.
Preferably, when the step (5) is dried, temperature is 300 DEG C.
Further, it is made of the component of following mass fraction：20 parts of potassium chloride, 20 parts of sodium chloride, lithium chloride 5
Part, 3 parts of potassium fluoride, 1 part of niter cake, 3 parts of prodan.
Further, it is made of the component of following mass fraction：40 parts of potassium chloride, 40 parts of sodium chloride, lithium chloride 15
Part, 5 parts of potassium fluoride, 3 parts of niter cake, 5 parts of prodan.
Further, it is made of the component of following mass fraction：30 parts of potassium chloride, 30 parts of sodium chloride, lithium chloride 10
Part, 4 parts of potassium fluoride, 2 parts of niter cake, 4 parts of prodan.
The beneficial effects of the invention are as follows：The coverture configuration technique of the present invention can effectively improve the insulation of coverture, prevent
Secondary oxidation effect, the sinter layer thickness for reducing coverture, fusion temperature is suitable, and fusing is quick, and expansion rate is fast, in casting table
Face forms one layer of oily film, can effectively prevent casting oxidization burning loss, air-breathing.With stronger chemical stability and thermostabilization
Property, there is no corrosiveness to molten aluminum and furnace lining, ensure that the original composition of alloy and performance.
Embodiment
Embodiment 1
A kind of coverture for aluminium alloy smelting and preparation method thereof and preparation method thereof, it is characterised in that it be by
The component of following mass fraction is formed：20 parts of potassium chloride, 20 parts of sodium chloride, 5 parts of lithium chloride, 3 parts of potassium fluoride, 1 part of niter cake,
3 parts of prodan.
Preparation method is as follows：(1) each component is configured according to ratio of weight and number；(2) each raw material is sufficiently mixed and stirred evenly,
(3) mixture obtained by step (2) is put into oven and is dried, drying temperature is 290 DEG C；(4) by the mixing after drying
Thing is crushed, and it is powdered to be screened into 80 mesh；(5) packed with waterproof plastic bag.
Embodiment 2
A kind of coverture for aluminium alloy smelting and preparation method thereof and preparation method thereof, it is characterised in that it be by
The component of following mass fraction is formed：40 parts of potassium chloride, 40 parts of sodium chloride, 15 parts of lithium chloride, 5 parts of potassium fluoride, niter cake 3
Part, 5 parts of prodan.
Preparation method is as follows：(1) each component is configured according to ratio of weight and number；(2) each raw material is sufficiently mixed and stirred evenly,
(3) mixture obtained by step (2) is put into oven and is dried, drying temperature is 300 DEG C；(4) by the mixing after drying
Thing is crushed, and it is powdered to be screened into 100 mesh；(5) packed with waterproof plastic bag.
Embodiment 3
A kind of coverture for aluminium alloy smelting and preparation method thereof and preparation method thereof, it is characterised in that it be by
The component of following mass fraction is formed：30 parts of potassium chloride, 30 parts of sodium chloride, 10 parts of lithium chloride, 4 parts of potassium fluoride, niter cake 2
Part, 4 parts of prodan.
Preparation method is as follows：(1) each component is configured according to ratio of weight and number；(2) each raw material is sufficiently mixed and stirred evenly,
(3) mixture obtained by step (2) is put into oven and is dried, drying temperature is 295 DEG C；(4) by the mixing after drying
Thing is crushed, and it is powdered to be screened into 90 mesh；(5) packed with waterproof plastic bag.
Claims (5)
- A kind of 1. coverture for aluminium alloy smelting and preparation method thereof and preparation method thereof, it is characterised in that it be by with The component of lower mass fraction is formed：20-40 parts of potassium chloride, 20-40 parts of sodium chloride, 5-15 parts of lithium chloride, 3-5 parts of potassium fluoride, sulphur Sour 1-3 parts of hydrogen sodium, 3-5 parts of prodan.Preparation method is as follows：(1) each component is configured according to ratio of weight and number；(2) each raw material is sufficiently mixed and stirred evenly, (3) Mixture obtained by step (2) is put into oven and is dried, drying temperature is 290-300 DEG C；(4) by the mixing after drying Thing is crushed, and it is powdered to be screened into 80-100 mesh；(5) packed with waterproof plastic bag.
- 2. a kind of coverture for aluminium alloy smelting according to claim 1 and preparation method thereof and preparation method thereof, It is characterized in that, when the step (5) is dried, temperature is 300 DEG C.
- 3. a kind of coverture for aluminium alloy smelting according to claim 1, it is characterised in that it is by following quality The component of number is formed：20 parts of potassium chloride, 20 parts of sodium chloride, 5 parts of lithium chloride, 3 parts of potassium fluoride, 1 part of niter cake, prodan 3 parts.
- 4. a kind of coverture for aluminium alloy smelting according to claim 1, it is characterised in that it is by following quality The component of number is formed：40 parts of potassium chloride, 40 parts of sodium chloride, 15 parts of lithium chloride, 5 parts of potassium fluoride, 3 parts of niter cake, fluosilicic acid 5 parts of sodium.
- 5. a kind of coverture for aluminium alloy smelting according to claim 1, it is characterised in that it is by following quality The component of number is formed：30 parts of potassium chloride, 30 parts of sodium chloride, 10 parts of lithium chloride, 4 parts of potassium fluoride, 2 parts of niter cake, fluosilicic acid 4 parts of sodium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711313473.7A CN108018449A (en) | 2017-12-12 | 2017-12-12 | A kind of coverture for aluminium alloy smelting and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711313473.7A CN108018449A (en) | 2017-12-12 | 2017-12-12 | A kind of coverture for aluminium alloy smelting and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108018449A true CN108018449A (en) | 2018-05-11 |
Family
ID=62072946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711313473.7A Pending CN108018449A (en) | 2017-12-12 | 2017-12-12 | A kind of coverture for aluminium alloy smelting and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108018449A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410629A (en) * | 2020-10-13 | 2021-02-26 | 江苏德联达智能科技有限公司 | Material for set top box shell and manufacturing method |
| CN112725636A (en) * | 2020-12-28 | 2021-04-30 | 广东鸿邦金属铝业有限公司 | Molten aluminum deslagging agent and preparation method and application thereof |
-
2017
- 2017-12-12 CN CN201711313473.7A patent/CN108018449A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410629A (en) * | 2020-10-13 | 2021-02-26 | 江苏德联达智能科技有限公司 | Material for set top box shell and manufacturing method |
| CN112725636A (en) * | 2020-12-28 | 2021-04-30 | 广东鸿邦金属铝业有限公司 | Molten aluminum deslagging agent and preparation method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180511 |