CN102296195A - Silicon special for piston foundry and preparation method thereof - Google Patents
Silicon special for piston foundry and preparation method thereof Download PDFInfo
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- CN102296195A CN102296195A CN2010102168456A CN201010216845A CN102296195A CN 102296195 A CN102296195 A CN 102296195A CN 2010102168456 A CN2010102168456 A CN 2010102168456A CN 201010216845 A CN201010216845 A CN 201010216845A CN 102296195 A CN102296195 A CN 102296195A
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- silicon
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- sodium hexametaphosphate
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Abstract
The invention relates to a piston foundry material, and in particular relates to silicon special for piston foundry and a preparation method thereof, belonging to the technical field of metal materials. Silicon special for piston foundry comprises 95.1-99.6% by mass of silicon (Si) element and 0.4-4.9% by mass of phosphorus (P) element and is prepared by adding one or a combined material of a plurality of phosphate ore, red phosphorus, sodium hexametaphosphate, copper phosphorus and phosphorus iron. By using silicon provided by the invention, the piston foundry process can be simplified, and a deterioration and refining process can be canceled, namely any phosphorus-containing modifying agents are not added, electric energy and heat energy actions when industrial silicon is smelted are fully utilized, and phosphorus is avoided from being added when secondary smelting is carried out, thus the energy-saving effect is obvious. Because the product fully contacts molten aluminum and the contact area is large, and phosphorus can be uniformly distributed in molten aluminum, thereby ensuring the deterioration and refining effect of aluminum alloy piston.
Description
Technical field
The present invention relates to a kind of casting for piston material, be specifically related to special-purpose silicon of a kind of casting for piston and preparation method thereof, belong to the metallic substance technical field.
Background technology
In the metal material processing technology industry, in the piston production casting important operation is arranged one, that is: modifying-refining is handled, and general in process of production at present employing adds forms such as red phosphorus, microcosmic salt, phosphor copper, phosphorus silicomanganese and adds.All there are many shortcomings in these methods: the one, and adding red phosphorus smog is big, serious environment pollution; Microcosmic salt modification effect instability; Moreover be that adding phosphor-copper, phosphorus silicomanganese precipitate easily, be difficult to fusing, Yi Pianxi, modification effect instability.The patent No. has been reported silicon phosphorus carbon manganese master alloy and preparation method for the ZL200610069260.X patent of invention, but its technology easy precipitation in use, infusibilityization, and use cost is higher.
Summary of the invention
The objective of the invention is for overcoming above-mentioned the deficiencies in the prior art part, special-purpose silicon of a kind of casting for piston and preparation method thereof is provided, it contains silicon, phosphoric, the mass percent of its component is: silicon Si:95.1-99.6%, phosphorus P:0.4-4.9%, by add Rock Phosphate (72Min BPL), red phosphorus, Sodium hexametaphosphate 99, copper phosphorus, ferrophosphorus wherein one or more composition material and make.It not only can simplify casting for piston technology, more can cancel the modifying-refining operation, does not promptly need to add any phosphorated alterant, and the electric energy when having made full use of the industrial silicon melting, heat energy effect avoided secondary smelting to phosphorate, so energy-saving effect are remarkable.Because this product and aluminium liquid full contact, contact area is big, so phosphorus is evenly distributed in aluminium liquid, has guaranteed the modifying-refining effect in the aluminium-alloy piston.
The present invention realizes with following technical scheme: the special-purpose silicon of a kind of casting for piston, it is characterized in that: it contains silicon, phosphoric, the mass percent of its component is: silicon Si:95.1-99.6%, phosphorus P:0.4-4.9%, by add Rock Phosphate (72Min BPL), red phosphorus, Sodium hexametaphosphate 99, copper phosphorus, ferrophosphorus wherein one or more composition material and make.
A kind of method for preparing the special-purpose silicon of the described casting for piston of claim 1 is characterized in that: carry out as follows:
(1) in the reinforced process of silicon melting, add one or more the combination wherein of Rock Phosphate (72Min BPL), red phosphorus, Sodium hexametaphosphate 99, copper phosphorus, ferrophosphorus with silica, carbonaceous reducing agent etc., in the industrial silicon electric furnace, temperature is to carry out melting under 1700-1800 ℃, and smelting time is 4 hours;
(2) go out in the silicon bag, to add in the process of silicon water one or more the combination wherein of Rock Phosphate (72Min BPL), red phosphorus, Sodium hexametaphosphate 99, copper phosphorus, ferrophosphorus; 1
(3) in the process of refined silicon water, add one or more the combination wherein of Rock Phosphate (72Min BPL), red phosphorus, Sodium hexametaphosphate 99, copper phosphorus, ferrophosphorus;
(4) cast silicon ingot piece;
(5) use broken back, cooling back.
Advantage of the present invention is: use the present invention and not only can simplify casting for piston technology, more can cancel the modifying-refining operation, promptly not need to add any phosphorated alterant, the electric energy when it has made full use of the industrial silicon melting, heat energy effect, avoided secondary smelting to phosphorate, so energy-saving effect is remarkable.Because this product and aluminium liquid full contact, contact area is big, so phosphorus is evenly distributed in aluminium liquid, has guaranteed the modifying-refining effect in the aluminium-alloy piston.
Embodiment
List four most preferred embodiments of the present invention below:
Batching is all calculated by 6300KVA type silicon furnace gauge.
Embodiment 1,
(1) taking by weighing phosphorus content is 375 kilograms of 40% Rock Phosphate (72Min BPL);
(2) it is joined in the about 1800 ℃ silicon stove of temperature equably with silica;
(3) put into the silicon bag through going out silicon water after the melting in 4 hours;
(4) cast silicon ingot piece;
(5) the cooling back is broken.
Just can produce the special-purpose silicon of casting for piston according to the method described above, its chemical ingredients: silicon Si:96%, phosphorus P4%.
Embodiment 2,
(1) taking by weighing phosphorous is 126 kilograms of 40% 94 kilograms of Rock Phosphate (72Min BPL) and Sodium hexametaphosphate 99s;
(2) the two is added in the about 1800 ℃ silicon stove of temperature equably with silica;
(3) through after the melting in 4 hours, go out silicon water and put into the silicon bag;
(4) cast silicon ingot piece;
(5) the cooling back is broken.
According to the method described above, just can produce Chemical Composition is silicon Si:98%, the special-purpose silicon of the casting for piston of phosphorus P:2%.
Embodiment 3,
Silicon water is by 2000 kilograms of calculating in the silicon bag.
(1) takes by weighing 30 kilograms of red phosphorus;
(2) red phosphorus that will take by weighing is pressed in the silicon bag of filling silicon water, and the silicon water temp is at 1700 ℃;
(3) refining was poured into a mould the silicon ingot piece after 1.5 hours;
(4) the cooling back is broken.
Just can produce Chemical Composition according to the method described above is silicon Si:98.5%, the special-purpose silicon of the casting for piston of phosphorus P:1.5%.
Embodiment 4,
(1) conversion takes by weighing 68 kilograms of Sodium hexametaphosphate 99s in proportion;
(2) Sodium hexametaphosphate 99 that weighs up is pressed in the silicon bag of filling silicon water, the silicon water temp is at 1700 ℃;
(3) refining cast aluminum ingot bar after 1.5 hours;
(4) the cooling back is broken.
Just can produce Chemical Composition according to the method described above is silicon Si:99.2%, the special-purpose silicon of the casting for piston of phosphorus P:0.8%.
Claims (2)
1. the special-purpose silicon of a casting for piston, it is characterized in that: it contains silicon, phosphoric, the mass percent of its component is: silicon Si:95.1-99.6%, phosphorus P:0.4-4.9%, by add Rock Phosphate (72Min BPL), red phosphorus, Sodium hexametaphosphate 99, copper phosphorus, ferrophosphorus wherein one or more composition material and make.
2. method for preparing the special-purpose silicon of the described casting for piston of claim 1 is characterized in that: carry out as follows:
(1) in the reinforced process of silicon melting, add one or more the combination wherein of Rock Phosphate (72Min BPL), red phosphorus, Sodium hexametaphosphate 99, copper phosphorus, ferrophosphorus with silica, carbonaceous reducing agent etc., in the industrial silicon electric furnace, temperature is to carry out melting under 1700-1800 ℃, and smelting time is 4 hours;
(2) go out in the silicon bag, to add in the process of silicon water one or more the combination wherein of Rock Phosphate (72Min BPL), red phosphorus, Sodium hexametaphosphate 99, copper phosphorus, ferrophosphorus;
(3) in the process of refined silicon water, add one or more the combination wherein of Rock Phosphate (72Min BPL), red phosphorus, Sodium hexametaphosphate 99, copper phosphorus, ferrophosphorus;
(4) cast silicon ingot piece;
(5) use broken back, cooling back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102168456A CN102296195A (en) | 2010-06-22 | 2010-06-22 | Silicon special for piston foundry and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102168456A CN102296195A (en) | 2010-06-22 | 2010-06-22 | Silicon special for piston foundry and preparation method thereof |
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| Publication Number | Publication Date |
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| CN102296195A true CN102296195A (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102168456A Pending CN102296195A (en) | 2010-06-22 | 2010-06-22 | Silicon special for piston foundry and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3953202A (en) * | 1975-02-10 | 1976-04-27 | Kawecki Berylco Industries, Inc. | Phosphorus-bearing master composition for addition to hyper-eutectic silicon-aluminum casting alloys and process therefor |
| CN1904100A (en) * | 2006-08-04 | 2007-01-31 | 沈阳航空工业学院 | Texture fining of super cocrystallization aluminium iron alloy and its preparation method |
| CN1932055A (en) * | 2006-10-11 | 2007-03-21 | 刘相法 | Silicon-base interalloy and its prepn process |
-
2010
- 2010-06-22 CN CN2010102168456A patent/CN102296195A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3953202A (en) * | 1975-02-10 | 1976-04-27 | Kawecki Berylco Industries, Inc. | Phosphorus-bearing master composition for addition to hyper-eutectic silicon-aluminum casting alloys and process therefor |
| CN1904100A (en) * | 2006-08-04 | 2007-01-31 | 沈阳航空工业学院 | Texture fining of super cocrystallization aluminium iron alloy and its preparation method |
| CN1932055A (en) * | 2006-10-11 | 2007-03-21 | 刘相法 | Silicon-base interalloy and its prepn process |
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Application publication date: 20111228 |