CN1730199A - Method for removing impurities in cast-steel smelt by supersonic wave and single-purpose device thereof - Google Patents
Method for removing impurities in cast-steel smelt by supersonic wave and single-purpose device thereof Download PDFInfo
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- CN1730199A CN1730199A CN 200510036555 CN200510036555A CN1730199A CN 1730199 A CN1730199 A CN 1730199A CN 200510036555 CN200510036555 CN 200510036555 CN 200510036555 A CN200510036555 A CN 200510036555A CN 1730199 A CN1730199 A CN 1730199A
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Abstract
The invention discloses a de-burring method by supersonic wave in cast-steel smelting, which is characterized in the following steps: 1) casting molten steel from founding furnace (1) into pouring basket agency (2), making use of ultrasonic vibration to have bubbles and impurity in molten steel float on surface, and eliminating bubbles and impurity; 2) casting molten steel from pouring basket agency (2) into casting mould (4), eliminating bubbles and impurity in the upper way, cooling molten steel gradually and forming semi-harden casting article (9); 3) vibrating said semi-harden casting article (9) by ultrasonic wave to eliminate its internal stress and get finished cast steel. The invention can eliminate bubbles and impurity to ensure hardness and intensity of cast steel, reduce condemnation factor and improve production efficiency, and can be used in cast steel smelting domain extensively.
Description
Technical field
The present invention relates to a kind of method of removing impurity, relate in particular to a kind of method and isolated plant thereof of in cast steels melting, removing impurity.Belong to the cast steel metallurgical technology field.
Background technology
In casting technique, particularly in the process of the smelting of cast steel, require the residual volume of residue in the molten steel and bubble very little.If residue impurity and the bubble in the molten steel can not be excluded, its inner formation is easily loosened, is dredged hole impurity interlayer after the foundry goods moulding, will have a strong impact on the rigidity and the intensity of cast steel like this.In the prior art, generally be impurity and the bubble that adopts in stirring method removal molten steel and the mold, promptly artificial or mechanical system is stirred and is rejected after molten steel makes impurity and bubble emersion surface, reaches the purpose of removing this impurity and bubble.There is the shortcoming of two aspects in this method: impurity in (1) molten steel and bubble poor removal effect, remaining in the steel casting have impurity and a bubble, causes that casting quality is bad, product rejection rate is high, production cost is high.(2) working strength of workers is big, production efficiency is low.
Summary of the invention
The technical issues that need to address of the present invention, purpose promptly of the present invention is method and an isolated plant thereof of removing impurity in order to provide in a kind of cast steels melting, this method has impurity and bubble rate height in the molten steel, the characteristics that casting product quality is good removed.
Technical problem of the present invention can solve by taking following measure:
Ultrasonic wave is removed the method for impurity in the cast steels melting, is characterized in:
1) earlier molten steel is poured into tundish mechanism from smelting furnace mechanism, utilizes vibration of ultrasonic wave to make bubble and impurity emersion surface in the molten steel, remove bubble and surface impurity;
2) again molten steel is poured into mold from middle turn-up mechanism, in casting cycle, utilizes vibration of ultrasonic wave to make bubble and impurity emersion surface in the molten steel, remove bubble and surface impurity, make molten steel in the mold solidify gradually, form and partly solidify foundry goods;
3) at last the aforementioned foundry goods that partly solidifies is carried out vibration of ultrasonic wave and removes its internal stress, make finished product cast steel.
Technical problem of the present invention also can solve by taking following measure:
Bottom, the bottom of tundish mechanism and the bottom of mold of described smelting furnace mechanism respectively are provided with a ultrasonic drilling machine, and the bottom of the foundry goods that forms in mold is provided with ultrasonic drilling machine.
The time of vibration of ultrasonic wave is 15 minutes to 60 minutes, and the frequency of vibration of ultrasonic wave is 50～300Hz.
Ultrasonic wave is removed the isolated plant of impurity in the foregoing cast steels melting, be characterized in: become by smelting furnace mechanism, tundish, mold and vibration of ultrasonic wave mechanism, the output of described vibration of ultrasonic wave machine is aimed at molten steel, the molten steel in the tundish and the foundry goods in the mold in the smelting furnace respectively.
Described ultrasonic drilling machine is that frequency is the vibration of ultrasonic wave instrument of 50～300Hz.
Described smelting furnace mechanism is intermediate frequency furnace, coreless induction furnace, main frequency furnace or electric arc furnaces.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention utilizes hyperacoustic shock effect, the impurity and the bubble of the foundry goods in molten steel in the cast steel or the process of setting are removed, molten steel is purified, eliminate foundry goods internal stress, make the foundry goods controlled micro crystallization, overcome that the efficient that stirring means exists is low, weak effect, shortcoming that labour intensity is big.
2, liquid towards of the present invention and semi liquid state foundry goods carry out the ultrasonic wave effect, can remove internal stress wherein, further improve the stability of foundry goods, thereby further reduce product rejection rate.
3, adopt the present invention to remove impurity and bubble, molten steel can be directly in order to mold, does the foundry goods of various model specifications by different moulds, and is unrestricted, also can guarantee to cast simultaneously structural steel and steel alloy except that high-quality.
Description of drawings
Fig. 1 is the process chart of the specific embodiment of the invention
The specific embodiment
Below in conjunction with specific embodiment the present invention is specifically described.
As shown in Figure 1, whole process flow of the present invention is made up of smelting furnace mechanism 1, tundish mechanism 2, ultrasonic drilling machine 3 vibrations instrument 3 and mold 4.In the present embodiment, smelting furnace mechanism 1 adopts intermediate frequency furnace, and ultrasonic drilling machine 3 adopts the vibration of ultrasonic wave instrument.During work, molten steel is poured into the tundish mechanism 2 from intermediate frequency furnace, then in tundish mechanism 2, after the vibrations processing through vibration of ultrasonic wave instrument 3, remove the bubble and the impurity 6 of part wherein, molten steel is poured into the mold from middle turn-up mechanism, and remaining molten steel 5 comes back to 1 li of intermediate frequency furnace; Then, in mold 4, handle through the vibrations of vibration of ultrasonic wave instrument 3 again, remove wherein bubble and impurity 7 again, molten steel forms foundry goods 9, and remaining molten steel 8 comes back to 1 li of intermediate frequency furnace; The foundry goods 9 of last liquid towards or semi liquid state carries out the vibrations of vibration of ultrasonic wave instrument 3 to be handled, and removes internal stress, makes the quality of foundry goods 9 more improve one deck.
Ultrasonic wave is removed the method for impurity in the cast steels melting, and molten steel is poured into tundish mechanism from smelting furnace mechanism, is poured into mold from middle turn-up mechanism again, forms required foundry goods at last, under the ultrasonic wave effect, finishes above-mentioned casting process.
The time that other embodiment among the present invention can set vibration of ultrasonic wave as required is 15 minutes to 60 minutes, and the frequency of vibration of ultrasonic wave is 50～300Hz.Described smelting furnace mechanism 1 can adopt intermediate frequency furnace, coreless induction furnace, main frequency furnace or electric arc furnaces.
Claims (6)
1, the method for ultrasonic wave removal impurity in the cast steels melting is characterized in that:
1) earlier molten steel is poured into tundish mechanism (2) from smelting furnace mechanism (1), utilizes vibration of ultrasonic wave to make bubble and impurity emersion surface in the molten steel, remove bubble and surface impurity;
2) again molten steel is poured into mold (4) from middle turn-up mechanism (2), in casting cycle, utilizes vibration of ultrasonic wave to make bubble and impurity emersion surface in the molten steel, remove bubble and surface impurity, make molten steel in the mold solidify gradually, form and partly solidify foundry goods (9);
3) at last the aforementioned foundry goods (9) that partly solidifies is carried out vibration of ultrasonic wave and removes its internal stress, make finished product cast steel.
2, the method for ultrasonic wave removal impurity in the cast steels melting as claimed in claim 1, it is characterized in that: the bottom of the bottom of smelting furnace mechanism (1), tundish mechanism (2) and the bottom of mold (4) respectively are provided with a ultrasonic drilling machine, and the bottom of the foundry goods (9) that forms in mold (4) is provided with ultrasonic drilling machine.
3, the method for ultrasonic wave removal impurity in the cast steels melting as claimed in claim 1 or 2, it is characterized in that: the time of vibration of ultrasonic wave is 15 minutes to 60 minutes, and the frequency of vibration of ultrasonic wave is 50～300Hz.
4, the isolated plant of ultrasonic wave removal impurity in the cast steels melting as claimed in claim 1, it is characterized in that: be made of smelting furnace mechanism (1), tundish mechanism (2), mold (4) and vibration of ultrasonic wave machine (3), the output that described vibration of ultrasonic wave machine (3) is positioned at is aimed at the molten steel of smelting furnace, the molten steel of tundish and the foundry goods of mold respectively.
5, the isolated plant of ultrasonic wave removal impurity in the cast steels melting as claimed in claim 2, it is characterized in that: described ultrasonic drilling machine (3) is the vibration of ultrasonic wave instrument of 50～300Hz for frequency.
6, the isolated plant of ultrasonic wave removal impurity in the cast steels melting as claimed in claim 2, it is characterized in that: described smelting furnace mechanism (1) is intermediate frequency furnace, coreless induction furnace, main frequency furnace or electric arc furnaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510036555 CN1730199A (en) | 2005-08-18 | 2005-08-18 | Method for removing impurities in cast-steel smelt by supersonic wave and single-purpose device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510036555 CN1730199A (en) | 2005-08-18 | 2005-08-18 | Method for removing impurities in cast-steel smelt by supersonic wave and single-purpose device thereof |
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| CN1730199A true CN1730199A (en) | 2006-02-08 |
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| CN 200510036555 Pending CN1730199A (en) | 2005-08-18 | 2005-08-18 | Method for removing impurities in cast-steel smelt by supersonic wave and single-purpose device thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260769A (en) * | 2010-05-25 | 2011-11-30 | 辽宁科技大学 | Ladle refining method for improving dynamical conditions by using ultrasonic wave |
| CN102994701A (en) * | 2012-11-30 | 2013-03-27 | 鞍钢股份有限公司 | Method for thinning size of argon gas bubbles during refining |
| CN107671249A (en) * | 2017-09-08 | 2018-02-09 | 大连理工大学 | A kind of method that ultrasonic wave implements molten iron purification in nodularization bag |
| CN108202128A (en) * | 2018-01-11 | 2018-06-26 | 芜湖市金贸流体科技股份有限公司 | A kind of hard seal gate valve valve seal ring whole embedding method |
-
2005
- 2005-08-18 CN CN 200510036555 patent/CN1730199A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260769A (en) * | 2010-05-25 | 2011-11-30 | 辽宁科技大学 | Ladle refining method for improving dynamical conditions by using ultrasonic wave |
| CN102994701A (en) * | 2012-11-30 | 2013-03-27 | 鞍钢股份有限公司 | Method for thinning size of argon gas bubbles during refining |
| CN107671249A (en) * | 2017-09-08 | 2018-02-09 | 大连理工大学 | A kind of method that ultrasonic wave implements molten iron purification in nodularization bag |
| CN108202128A (en) * | 2018-01-11 | 2018-06-26 | 芜湖市金贸流体科技股份有限公司 | A kind of hard seal gate valve valve seal ring whole embedding method |
| CN108202128B (en) * | 2018-01-11 | 2020-05-15 | 芜湖市金贸流体科技股份有限公司 | Integral casting-in method for sealing ring of valve body of hard sealing gate valve |
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Open date: 20060208 |