CN112338150A - Micro-seismic pouring process for pump valve steel castings - Google Patents
Micro-seismic pouring process for pump valve steel castings Download PDFInfo
- Publication number
- CN112338150A CN112338150A CN202011123232.8A CN202011123232A CN112338150A CN 112338150 A CN112338150 A CN 112338150A CN 202011123232 A CN202011123232 A CN 202011123232A CN 112338150 A CN112338150 A CN 112338150A
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- China
- Prior art keywords
- steel
- molten steel
- intermediate frequency
- ladle
- frequency furnace
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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
- B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/58—Pouring-nozzles with gas injecting means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention relates to a pump valve steel casting micro-seismic pouring process, which comprises the following steps: s1, adding raw materials into the intermediate frequency furnace; s2, starting the intermediate frequency furnace to melt the raw materials; s3, removing slag liquid on the surface layer of the molten steel after melting down by using a slag removing agent; s4, adding silicon, calcium and manganese; s5, turning off the power supply of the intermediate frequency furnace, and standing for 3 minutes; s6, starting the intermediate frequency furnace, and removing slag liquid on the surface layer of the molten steel for the second time by using a slag removing agent; s7, adding rare earth silicon, wherein the dosage of the rare earth silicon is 0.07-0.18 percent of the molten steel; s8, heating to tapping temperature, and pouring molten steel into a steel ladle; s9, hoisting the ladle to a tapping trolley and moving the ladle to a tapping slot; s10, opening the vibration equipment of the steel tapping trolley, adjusting the vibration frequency of the vibration equipment to 6500Hz, and connecting the argon blowing pipeline to the bottom of the ladle; and S11, casting the steel casting. Compared with the traditional casting process, the method has the advantages of reducing cost, improving quality and improving working efficiency.
Description
Technical Field
The invention relates to the technical field of pouring processes, in particular to a pump valve steel casting micro-seismic pouring process.
Background
The pump valve steel castings mainly produce thin-wall and complex castings. The casting process adopted at present needs higher cost to carry out post treatment on the steel casting, such as a large amount of repair welding, secondary heat treatment and the like, and sometimes the casting is scrapped due to the defects of inclusions, air holes and the like of the thin-wall casting.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the technical problem of poor quality of pump valve steel castings poured by the traditional pouring process is solved.
The invention provides a pump valve steel casting micro-seismic pouring process, which comprises the following steps:
s1, adding the cut riser return materials, carbon steel and stainless steel into the intermediate frequency furnace;
s2, starting the intermediate frequency furnace to enable the power of the intermediate frequency furnace to reach 200kw, and then gradually increasing the power to enable carbon steel and stainless steel to be melted down;
s3, removing slag liquid on the surface layer of the molten steel after melting down by using a slag removing agent;
s4, heating the molten steel to 1570-1590 ℃, and adding silicon, calcium and manganese, wherein the dosage of the silicon, calcium and manganese is 0.15-0.35 percent of the molten steel; the silicon-calcium-manganese is used for reducing the content of oxygen element and sulfur element in the molten steel and purifying impurities in the molten steel;
s5, heating the molten steel to 1590-1620 ℃, then closing the power supply of the intermediate frequency furnace, and standing for 3 minutes; so that the molten steel tends to be stable;
s6, starting the intermediate frequency furnace, and removing slag liquid on the surface layer of the molten steel for the second time by using a slag removing agent; starting the intermediate frequency furnace after the molten steel tends to be stable, and floating part of impurities which are difficult to float up to a slag liquid layer by utilizing the electromagnetic stirring principle of the intermediate frequency furnace;
s7, adding rare earth silicon, wherein the dosage of the rare earth silicon is 0.07-0.18 percent of the molten steel; the rare earth silicon is used for refining, desulfurizing, neutralizing low-melting-point harmful impurities, purifying molten steel and improving the processability of steel castings;
s8, heating to tapping temperature, and pouring molten steel into a steel ladle;
s9, hoisting the ladle to a tapping trolley and moving the ladle to a tapping slot;
s10, opening the vibration equipment of the steel tapping trolley, adjusting the vibration frequency of the vibration equipment to 6500Hz +/-50 Hz, and connecting the argon blowing pipeline to the bottom of the steel ladle; slight shock is given to the steel ladle, argon is blown to the bottom of the steel ladle, so that impurities in the steel ladle are involved in molten steel to form tiny impurities, and the tiny impurities float to a slag liquid layer, and the purpose of purifying the molten steel is achieved;
and S11, when the molten steel is cooled to the pouring temperature, pouring the steel casting.
Compared with the traditional casting process, the invention reduces the cost, improves the quality and improves the working efficiency.
Detailed Description
The first embodiment is as follows: smelting material CF3, comprising the following steps:
s1, adding the cut riser return materials and 316L stainless steel into the intermediate frequency furnace;
s2, starting the intermediate frequency furnace to enable the power of the intermediate frequency furnace to reach 200kw, then gradually increasing the power to 700kw to enable 316L stainless steel to be melted down;
s3, removing slag liquid on the surface layer of the molten steel after melting down by using a slag removing agent;
s4, heating the molten steel to 1570 ℃, and adding silicon, calcium and manganese, wherein the dosage of the silicon, calcium and manganese is 0.2 percent of the molten steel; the silicon-calcium-manganese is used for reducing the content of oxygen element and sulfur element in the molten steel and purifying impurities in the molten steel;
s5, heating the molten steel to 1590 ℃, then closing a power supply of the intermediate frequency furnace, and standing for 3 minutes; so that the molten steel tends to be stable;
s6, starting the intermediate frequency furnace, and removing slag liquid on the surface layer of the molten steel for the second time by using a slag removing agent; starting the intermediate frequency furnace after the molten steel tends to be stable, and floating part of impurities which are difficult to float up to a slag liquid layer by utilizing the electromagnetic stirring principle of the intermediate frequency furnace;
s7, adding rare earth silicon, wherein the dosage of the rare earth silicon is 0.07 percent of the molten steel; the rare earth silicon is used for refining, desulfurizing, neutralizing low-melting-point harmful impurities, purifying molten steel and improving the processability of steel castings;
s8, heating to tapping temperature: pouring molten steel into a steel ladle at 1600 ℃;
s9, hoisting the ladle to a tapping trolley and moving the ladle to a tapping slot;
s10, opening the vibration equipment of the steel tapping trolley, adjusting the vibration frequency of the vibration equipment to 6500Hz, and connecting the argon blowing pipeline to the bottom of the ladle; slight shock is given to the steel ladle, argon is blown to the bottom of the steel ladle, so that impurities in the steel ladle are involved in molten steel to form tiny impurities, and the tiny impurities float to a slag liquid layer, and the purpose of purifying the molten steel is achieved;
s11, when the molten steel is cooled to the pouring temperature: and casting the steel casting at 1540 ℃.
Example two: smelting material CF8M, comprising the following steps:
s1, adding the cut riser return materials and 316 stainless steel into the intermediate frequency furnace;
s2, starting the intermediate frequency furnace to enable the power of the intermediate frequency furnace to reach 200kw, then gradually increasing the power to 700kw to enable 316 stainless steel to be melted down;
s3, removing slag liquid on the surface layer of the molten steel after melting down by using a slag removing agent;
s4, heating the molten steel to 1570 ℃, and adding silicon, calcium and manganese, wherein the dosage of the silicon, calcium and manganese is 0.22 percent of the molten steel; the silicon-calcium-manganese is used for reducing the content of oxygen element and sulfur element in the molten steel and purifying impurities in the molten steel;
s5, heating the molten steel to 1580 ℃, closing a power supply of the intermediate frequency furnace, and standing for 3 minutes; so that the molten steel tends to be stable;
s6, starting the intermediate frequency furnace, and removing slag liquid on the surface layer of the molten steel for the second time by using a slag removing agent; starting the intermediate frequency furnace after the molten steel tends to be stable, and floating part of impurities which are difficult to float up to a slag liquid layer by utilizing the electromagnetic stirring principle of the intermediate frequency furnace;
s7, adding rare earth silicon, wherein the dosage of the rare earth silicon is 0.18 percent of that of the molten steel; the rare earth silicon is used for refining, desulfurizing, neutralizing low-melting-point harmful impurities, purifying molten steel and improving the processability of steel castings;
s8, heating to tapping temperature: pouring molten steel into a steel ladle at 1610 ℃;
s9, hoisting the ladle to a tapping trolley and moving the ladle to a tapping slot;
s10, opening the vibration equipment of the steel tapping trolley, adjusting the vibration frequency of the vibration equipment to 6500Hz, and connecting the argon blowing pipeline to the bottom of the ladle; slight shock is given to the steel ladle, argon is blown to the bottom of the steel ladle, so that impurities in the steel ladle are involved in molten steel to form tiny impurities, and the tiny impurities float to a slag liquid layer, and the purpose of purifying the molten steel is achieved;
s11, when the molten steel is cooled to the pouring temperature: and 1530 ℃ for casting steel castings.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (1)
1. A pump valve steel casting micro-seismic pouring process is characterized by comprising the following steps:
s1, adding the cut riser return materials, carbon steel and stainless steel into the intermediate frequency furnace;
s2, starting the intermediate frequency furnace to enable the power of the intermediate frequency furnace to reach 200kw, and then gradually increasing the power to enable carbon steel and stainless steel to be melted down;
s3, removing slag liquid on the surface layer of the molten steel after melting down by using a slag removing agent;
s4, heating the molten steel to 1570-1590 ℃, and adding silicon, calcium and manganese, wherein the dosage of the silicon, calcium and manganese is 0.15-0.35 percent of the molten steel;
s5, heating the molten steel to 1590-1620 ℃, then closing the power supply of the intermediate frequency furnace, and standing for 3 minutes;
s6, starting the intermediate frequency furnace, and removing slag liquid on the surface layer of the molten steel for the second time by using a slag removing agent;
s7, adding rare earth silicon, wherein the dosage of the rare earth silicon is 0.07-0.18 percent of the molten steel;
s8, heating to tapping temperature, and pouring molten steel into a steel ladle;
s9, hoisting the ladle to a tapping trolley and moving the ladle to a tapping slot;
s10, opening the vibration equipment of the steel tapping trolley, adjusting the vibration frequency of the vibration equipment to 6500Hz +/-50 Hz, and connecting an argon blowing pipeline to a steel ladle;
and S11, when the molten steel is cooled to the pouring temperature, pouring the steel casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011123232.8A CN112338150B (en) | 2020-10-20 | 2020-10-20 | Micro-seismic pouring process for pump valve steel castings |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011123232.8A CN112338150B (en) | 2020-10-20 | 2020-10-20 | Micro-seismic pouring process for pump valve steel castings |
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| CN112338150A true CN112338150A (en) | 2021-02-09 |
| CN112338150B CN112338150B (en) | 2022-03-18 |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08267198A (en) * | 1995-03-28 | 1996-10-15 | Nisshin Steel Co Ltd | Production of high cleanliness steel |
| CN101307374A (en) * | 2007-05-15 | 2008-11-19 | 宝山钢铁股份有限公司 | Process for removing nonmetal inclusion in molten steel |
| CN102010936A (en) * | 2010-04-22 | 2011-04-13 | 广西钟山长城矿山机械厂 | Process method for refining austenitic manganese steel by blowing argon gas into medium frequency induction furnace |
| CN102296143A (en) * | 2010-06-23 | 2011-12-28 | 辽宁科技大学 | Method for reducing slagging time of refining furnace of steel ladle by variable-frequency ultrasonic waves |
| CN102337378A (en) * | 2011-10-31 | 2012-02-01 | 首钢总公司 | Process for removing non-metallic inclusions in molten steel |
| CN103203427A (en) * | 2012-07-16 | 2013-07-17 | 贵州英吉尔机械制造有限公司 | Molding and casting method for automobile cylinder cover with high air-tightness |
| CN104141024A (en) * | 2014-07-17 | 2014-11-12 | 武汉桂坤科技有限公司 | Method for producing high-purity pure iron |
| CN106048133A (en) * | 2016-07-04 | 2016-10-26 | 共享铸钢有限公司 | Smelting method capable of reducing molten steel slag inclusion in steel casting smelting process |
| CN106119734A (en) * | 2016-08-23 | 2016-11-16 | 合肥东方节能科技股份有限公司 | A kind of rustless steel and smelting process thereof |
| CN106282787A (en) * | 2016-08-09 | 2017-01-04 | 龙岩盛丰机械制造有限公司 | A kind of cast steel material and the manufacture method of foundry goods thereof |
| CN108356244A (en) * | 2018-05-02 | 2018-08-03 | 湖南四昉新材料有限公司 | A kind of pouring device of bimetal roller housing |
| CN109750170A (en) * | 2017-11-02 | 2019-05-14 | 江苏万恒铸业有限公司 | A kind of intermediate frequency furnace rushes argon melting nickel-base alloy casting manufacturing process |
| CN110423862A (en) * | 2019-09-12 | 2019-11-08 | 东北大学 | A kind of double hose electromagnetic agitation RH device and method |
| CN209867350U (en) * | 2019-05-21 | 2019-12-31 | 青岛首鑫冶金辅料科技有限公司 | Impurity removing device for production of vibrating table |
| CN110964875A (en) * | 2019-12-26 | 2020-04-07 | 银峰铸造（芜湖）有限公司 | High-strength casting material and preparation method thereof |
-
2020
- 2020-10-20 CN CN202011123232.8A patent/CN112338150B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08267198A (en) * | 1995-03-28 | 1996-10-15 | Nisshin Steel Co Ltd | Production of high cleanliness steel |
| CN101307374A (en) * | 2007-05-15 | 2008-11-19 | 宝山钢铁股份有限公司 | Process for removing nonmetal inclusion in molten steel |
| CN102010936A (en) * | 2010-04-22 | 2011-04-13 | 广西钟山长城矿山机械厂 | Process method for refining austenitic manganese steel by blowing argon gas into medium frequency induction furnace |
| CN102296143A (en) * | 2010-06-23 | 2011-12-28 | 辽宁科技大学 | Method for reducing slagging time of refining furnace of steel ladle by variable-frequency ultrasonic waves |
| CN102337378A (en) * | 2011-10-31 | 2012-02-01 | 首钢总公司 | Process for removing non-metallic inclusions in molten steel |
| CN103203427A (en) * | 2012-07-16 | 2013-07-17 | 贵州英吉尔机械制造有限公司 | Molding and casting method for automobile cylinder cover with high air-tightness |
| CN104141024A (en) * | 2014-07-17 | 2014-11-12 | 武汉桂坤科技有限公司 | Method for producing high-purity pure iron |
| CN106048133A (en) * | 2016-07-04 | 2016-10-26 | 共享铸钢有限公司 | Smelting method capable of reducing molten steel slag inclusion in steel casting smelting process |
| CN106282787A (en) * | 2016-08-09 | 2017-01-04 | 龙岩盛丰机械制造有限公司 | A kind of cast steel material and the manufacture method of foundry goods thereof |
| CN106119734A (en) * | 2016-08-23 | 2016-11-16 | 合肥东方节能科技股份有限公司 | A kind of rustless steel and smelting process thereof |
| CN109750170A (en) * | 2017-11-02 | 2019-05-14 | 江苏万恒铸业有限公司 | A kind of intermediate frequency furnace rushes argon melting nickel-base alloy casting manufacturing process |
| CN108356244A (en) * | 2018-05-02 | 2018-08-03 | 湖南四昉新材料有限公司 | A kind of pouring device of bimetal roller housing |
| CN209867350U (en) * | 2019-05-21 | 2019-12-31 | 青岛首鑫冶金辅料科技有限公司 | Impurity removing device for production of vibrating table |
| CN110423862A (en) * | 2019-09-12 | 2019-11-08 | 东北大学 | A kind of double hose electromagnetic agitation RH device and method |
| CN110964875A (en) * | 2019-12-26 | 2020-04-07 | 银峰铸造（芜湖）有限公司 | High-strength casting material and preparation method thereof |
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| CN112338150B (en) | 2022-03-18 |
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