CN103741023A - Method for smelting non-magnetic steel - Google Patents
Method for smelting non-magnetic steel Download PDFInfo
- Publication number
- CN103741023A CN103741023A CN201410000929.4A CN201410000929A CN103741023A CN 103741023 A CN103741023 A CN 103741023A CN 201410000929 A CN201410000929 A CN 201410000929A CN 103741023 A CN103741023 A CN 103741023A
- Authority
- CN
- China
- Prior art keywords
- steel
- refining
- minutes
- argon flow
- power transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention relates to a method for smelting non-magnetic steel. The method comprises steps of tapping by an electric furnace, stirring molten steel for 2 minutes by the strength of argon flow greater than or equal to 100m<3>/h, then powering on for refining; powering on by the strength of argon flow of 20-30m<3>/h, cutting off the power and adding manganese when the temperature of molten steel is greater than or equal to 1600 DEG C, stirring molten steel for 2 minutes by the strength of argon flow greater than or equal to 100m<3>/h, then powering on for refining; powering on under the condition of argon flow of 20-30m<3>/h, adding 300kg of aluminum shot and 100kg of aluminum powder for reduction when the temperature of molten steel is greater than or equal to 1560 DEG C; reducing for 10 minutes, sampling and analyzing chemical components when the temperature of molten steel is greater than or equal to 1650 DEG C, feeding aluminum lines by the strength of argon flow greater than or equal to 80m<3>/h; powering on and adding 200kg of aluminum powder by the strength of argon flow greater than or equal to 80m<3>/h, reducing for 10 minutes; powering on for at least 20 minutes, finishing refining when the temperature of molten steel is 1640-1650 DEG C. The percent of pass of steel ingots is 97.09%.
Description
Technical field
The invention belongs to metallurgy industry smelting technology, be specifically related to a kind of smelting process of nonmagnetic steel.
Background technology
In smelt nonmagnetic steel process, in the casting process of molten steel, pour into a mould badly, caused a large amount of waste products, its steel ingot qualification rate is 94.43%.
Summary of the invention
The object of the invention is in order to improve steel ingot qualification rate, to reduce costs, create economic benefit.
The chemical composition mass percent of nonmagnetic steel is that C is 0.14-0.20, Si≤0.50, and Mn is 21.5-25.0, P≤0.030, S≤0.030, Al is 1.50-2.50, and V is 0.04-0.10, and all the other are iron and inevitable impurity.
The present invention includes the refining of LF refining furnace, it is characterized in that: by adopting the method for " first high temperature melting alloy, rear high temperature reduction, control by stages argon flow amount ", make the Al in steel in refining process
2o
3inclusion reduces generation as far as possible, and makes the Al in steel by the stirring of argon gas
2o
3inclusion floats to rapidly in slag, reaches and reduces Al in steel
2o
3inclusion, stops ladle nozzle and stops up, and molten steel is the object of cast smoothly.
After arc furnace tapping, with argon flow amount>=100m
3the intensity of/h, stir molten steel after 2 minutes bull ladle enter the refining of LF refining furnace station power transmission; With argon gas stream 20-30m
3the intensity power transmission of/h, when liquid steel temperature>=1600 ℃, has a power failure and adds manganese metal, with argon flow amount>=100m
3the intensity of/h, stirs molten steel power transmission refining again in 2 minutes; After manganese metal all adds, at argon gas stream 20-30m
3power transmission under the condition of/h adds aluminium shot 300kg, aluminium powder 100kg to reduce when liquid steel temperature>=1560 ℃; While adding aluminium shot, aluminum reduction 10 minutes and liquid steel temperature>=1650 ℃, sampling analysis chemical composition, chemical composition out has a power failure afterwards, at argon flow amount>=80m
3under the intensity of/h, feed aluminum steel; Feed aluminum steel complete, buggy ladle is left back to LF refining furnace station, power transmission add aluminium powder 200kg under the intensity of argon flow amount>=80m3/h, power transmission reduction sampled after 10 minutes;
Feed aluminum steel complete, electric power feeding time >=20 minute, when liquid steel temperature is 1640-1650 ℃, finish refining, enter next procedure.
The present invention makes the Al in molten steel by the stirring of argon gas
2o
3inclusion floats to rapidly in slag, has reduced Al in steel
2o
3inclusion, has avoided nozzle clogging, and ladle nozzle stops up, and makes pouring molten steel smooth, thereby make the steel ingot qualification rate that the present invention smelts, is 97.09%.
Embodiment
The smelting trade mark of the present embodiment is that the chemical composition mass percent of 20Mn23AlV nonmagnetic steel is that C is 0.14-0.20, Si≤0.50, and Mn is 21.5-25.0, P≤0.030, S≤0.030, Al is 1.50-2.50, V is 0.04-0.10, and all the other are iron and inevitable impurity.
1,, after arc furnace tapping, molten steel is in ladle, with argon flow amount>=100m
3the intensity of/h, stirred molten steel after 2 minutes, stopped stirring.
2, ladle is entered to the refining of LF refining furnace station power transmission:
(1) with argon gas stream 20-30m
3the intensity power transmission of/h, when liquid steel temperature>=1600 ℃, has a power failure, and adds manganese metal, with argon flow amount>=100m
3the intensity of/h, stirs molten steel power transmission refining again in 2 minutes.
(2) after manganese metal all adds, at argon gas stream 20-30m
3feeding temperature-raising deposite metal manganese under the condition of/h.
(3) when liquid steel temperature >=1560 ℃, add aluminium shot 300kg, aluminium powder 100kg to reduce.
(4) while adding aluminium shot, aluminum reduction 10 minutes and liquid steel temperature >=1650 ℃, sampling analysis chemical composition.
(5) chemical composition out has a power failure afterwards, at argon flow amount>=80m
3under the intensity of/h, in molten steel, feed aluminum steel.
(6) feed aluminum steel complete, power transmission add aluminium powder 200kg under the intensity of argon flow amount >=80m3/h, power transmission reduction sampling after 10 minutes.
(7) electric power feeding time >=20 minute after hello aluminum steel, when liquid steel temperature is 1640-1650 ℃, finish refining, enter next procedure.
Claims (2)
1. a smelting process for nonmagnetic steel, comprises the refining of LF refining furnace, it is characterized in that after arc furnace tapping, with argon flow amount>=100m
3the intensity of/h, stir molten steel after 2 minutes bull ladle enter the refining of LF refining furnace station power transmission; With argon gas stream 20-30m
3the intensity power transmission of/h, when liquid steel temperature>=1600 ℃, has a power failure and adds manganese metal, with argon flow amount>=100m
3the intensity of/h, stirs molten steel power transmission refining again in 2 minutes; After manganese metal all adds, at argon gas stream 20-30m
3power transmission under the condition of/h adds aluminium shot 300kg, aluminium powder 100kg to reduce when liquid steel temperature>=1560 ℃; While adding aluminium shot, aluminum reduction 10 minutes and liquid steel temperature>=1650 ℃, sampling analysis chemical composition, chemical composition out has a power failure afterwards, at argon flow amount>=80m
3under the intensity of/h, feed aluminum steel; Feed aluminum steel complete, buggy ladle is left back to LF refining furnace station, power transmission add aluminium powder 200kg under the intensity of argon flow amount>=80m3/h, power transmission reduction sampled after 10 minutes;
Feed aluminum steel complete, electric power feeding time >=20 minute, when liquid steel temperature is 1640-1650 ℃, finish refining, enter next procedure.
2. the smelting process of a kind of nonmagnetic steel according to claim 1, the chemical composition mass percent that it is characterized in that described nonmagnetic steel is that C is 0.14-0.20, Si≤0.50, Mn is 21.5-25.0, P≤0.030, S≤0.030, Al is 1.50-2.50, V is 0.04-0.10, and all the other are iron and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410000929.4A CN103741023B (en) | 2014-01-02 | 2014-01-02 | A kind of smelting process of nonmagnetic steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410000929.4A CN103741023B (en) | 2014-01-02 | 2014-01-02 | A kind of smelting process of nonmagnetic steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103741023A true CN103741023A (en) | 2014-04-23 |
| CN103741023B CN103741023B (en) | 2015-09-23 |
Family
ID=50498087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410000929.4A Active CN103741023B (en) | 2014-01-02 | 2014-01-02 | A kind of smelting process of nonmagnetic steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103741023B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109800A (en) * | 2014-07-03 | 2014-10-22 | 武汉钢铁(集团)公司 | High-strength vanadium-containing high-manganese non-magnetic steel and production method thereof |
| CN108580911A (en) * | 2018-05-02 | 2018-09-28 | 莱芜钢铁集团粉末冶金有限公司 | A kind of preparation method of high manganese nonmagnetic steel powder |
| CN108796383A (en) * | 2017-04-27 | 2018-11-13 | 宝山钢铁股份有限公司 | A kind of titaniferous high-intensity and high-tenacity nonmagnetic steel and its manufacturing method |
| CN110747399A (en) * | 2019-11-13 | 2020-02-04 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Controlled rolling and controlled cooling production method of high-yield-ratio high-manganese high-aluminum nonmagnetic steel plate |
| CN114990438A (en) * | 2022-05-31 | 2022-09-02 | 江西宝顺昌特种合金制造有限公司 | High-manganese high-aluminum low-magnetic austenitic steel and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101376915A (en) * | 2008-09-29 | 2009-03-04 | 山西太钢不锈钢股份有限公司 | Method for smelting high-alumina non-magnetic steel |
| CN102021273A (en) * | 2010-12-30 | 2011-04-20 | 安阳钢铁股份有限公司 | Fluidness control method of molten low-silicon aluminized steel of square billet |
| CN102666727A (en) * | 2009-12-22 | 2012-09-12 | 沙伯基础创新塑料知识产权有限公司 | Poly(arylene ether)/polyamide compositions, methods, and articles |
| CN103014221A (en) * | 2012-12-17 | 2013-04-03 | 莱芜钢铁集团有限公司 | Method for producing high-aluminum steel plate blanks |
-
2014
- 2014-01-02 CN CN201410000929.4A patent/CN103741023B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101376915A (en) * | 2008-09-29 | 2009-03-04 | 山西太钢不锈钢股份有限公司 | Method for smelting high-alumina non-magnetic steel |
| CN102666727A (en) * | 2009-12-22 | 2012-09-12 | 沙伯基础创新塑料知识产权有限公司 | Poly(arylene ether)/polyamide compositions, methods, and articles |
| CN102021273A (en) * | 2010-12-30 | 2011-04-20 | 安阳钢铁股份有限公司 | Fluidness control method of molten low-silicon aluminized steel of square billet |
| CN103014221A (en) * | 2012-12-17 | 2013-04-03 | 莱芜钢铁集团有限公司 | Method for producing high-aluminum steel plate blanks |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109800A (en) * | 2014-07-03 | 2014-10-22 | 武汉钢铁(集团)公司 | High-strength vanadium-containing high-manganese non-magnetic steel and production method thereof |
| CN104109800B (en) * | 2014-07-03 | 2016-06-29 | 武汉钢铁(集团)公司 | High intensity is containing vanadium height manganese nonmagnetic steel and production method thereof |
| CN108796383A (en) * | 2017-04-27 | 2018-11-13 | 宝山钢铁股份有限公司 | A kind of titaniferous high-intensity and high-tenacity nonmagnetic steel and its manufacturing method |
| CN108580911A (en) * | 2018-05-02 | 2018-09-28 | 莱芜钢铁集团粉末冶金有限公司 | A kind of preparation method of high manganese nonmagnetic steel powder |
| CN108580911B (en) * | 2018-05-02 | 2021-04-20 | 山东鲁银新材料科技有限公司 | Preparation method of high-manganese non-magnetic steel powder |
| CN110747399A (en) * | 2019-11-13 | 2020-02-04 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Controlled rolling and controlled cooling production method of high-yield-ratio high-manganese high-aluminum nonmagnetic steel plate |
| CN114990438A (en) * | 2022-05-31 | 2022-09-02 | 江西宝顺昌特种合金制造有限公司 | High-manganese high-aluminum low-magnetic austenitic steel and manufacturing method thereof |
| CN114990438B (en) * | 2022-05-31 | 2023-10-20 | 江西宝顺昌特种合金制造有限公司 | High-manganese high-aluminum low-magnetic austenitic steel and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103741023B (en) | 2015-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103469050B (en) | Aluminum-containing cold forging steel smelting process | |
| CN105177215B (en) | Efficient production process of high aluminum-alloy-content structure round steel | |
| CN102758144B (en) | Production method for steel ingot of large-sized high-nitrogen retaining ring steel | |
| CN102021488B (en) | Steel for nuclear-island seamless steel tube and production method thereof | |
| CN102021490B (en) | X12CrMoWVNbN10-1-1 high-temperature structural steel and production method thereof | |
| CN103741023B (en) | A kind of smelting process of nonmagnetic steel | |
| CN102994871B (en) | Method for smelting medium/high-carbon hard-wired steel by vanadium-titanium containing molten iron | |
| CN105088094A (en) | Manufacturing method of nitrogen-controlled austenitic stainless steel large forging piece | |
| CN106636862A (en) | Technology for smelting super duplex stainless steel for argon oxygen furnace | |
| CN102787195B (en) | Stainless-steel smelting method | |
| CN105537549B (en) | The production method of 100 DEG C of low temperature seamless steel pipe steel continuous cast round billets | |
| CN105154623A (en) | Efficient alloying method for smelting 38CrMoAl steel | |
| CN105316558A (en) | Preparation method of boron-containing steel preventing casting blank corner cracking | |
| CN107350445A (en) | The production method of carburizing bearing steel G20Cr2Ni4 continuous cast round billets | |
| CN103436654A (en) | Low-cost production method for container steel casting blanks | |
| CN110592312B (en) | Preparation method of steel for high-speed axle | |
| CN102181639A (en) | One-step method for producing low-carbon/micro-carbon manganese-silicon alloy by using submerged arc furnace | |
| CN103966385A (en) | Process for smelting MC5 roller by using return scraps | |
| CN108330240A (en) | Method of the aluminium without calcification processing drops in continuous casting Q235 steel grades | |
| CN110029263A (en) | The process of sulfur-bearing Aluminum steel production | |
| CN103484599B (en) | Smelting method of high-manganese wear-resistant steel | |
| CN108660320A (en) | A kind of low-aluminium high titanium-type high temperature alloy electroslag remelting process | |
| CN105290345A (en) | Treatment method for steel ladle casting remaining liquid steel | |
| CN102424894A (en) | Method for producing 23MnB steel in converter process | |
| CN106811685A (en) | A kind of smelting process of low-carbon high-manganese steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |