CN107164605A - A kind of LF refining method of deoxidation for producing low-carbon welding wire steel - Google Patents
A kind of LF refining method of deoxidation for producing low-carbon welding wire steel Download PDFInfo
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- CN107164605A CN107164605A CN201710197468.8A CN201710197468A CN107164605A CN 107164605 A CN107164605 A CN 107164605A CN 201710197468 A CN201710197468 A CN 201710197468A CN 107164605 A CN107164605 A CN 107164605A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C2300/00—Process aspects
- C21C2300/02—Foam creation
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a kind of LF refining method of deoxidation for producing low-carbon welding wire steel, molten steel is through converter smelting, into the refining of LF stoves；Ferrosilicon powder and toner mixture are used as foaming deoxidier in LF stoves, realize overall process small lot by the feed bin material that shakes, diffusive deoxidation is carried out on the multiple batches of addition top of the slag, keep whole refining process clinker foaming and reducing atmosphere.By the present invention in that carry out deoxidation slagging method with mixture, with than traditional more preferable performance of slag making deoxidization technique, simultaneously, realize the inexpensive STEELMAKING PRODUCTION of green non-pollution, with significant economic benefit and social benefit, enterprise competitiveness is improved, survival and development space has been expanded.
Description
Technical field
The invention belongs to make steel furnace outer refining technology field, and in particular to a kind of LF refining deoxidation for producing low-carbon welding wire steel
Method.
Background technology
At present, when producing low-carbon welding wire steel, no matter push up suction or dirt is absorbed in side, LF refining slag making is typically entered using ferrosilicon powder
The diffusive deoxidation of the row clinker top of the slag, makes white slag and keeps the submerged arc effect of whole refining process, still by increase thickness of slag layer
The increase quantity of slag does not have the foaming capacity of clinker and increase slag charge cost, and ferrosilicon powder deoxidation, which is easy to be rolled into molten steel, to be increased
Silicon, ferrosilicon powder can not when clinker foams FeO+MnO in abundant reducing slag, it is not thorough to easily cause oxide reduction in slag, when
As temperature is raised during LF refining, oxygen is returned in molten steel in slag, causes the secondary oxidation of molten steel, causes total oxygen in steel higher.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of LF refining method of deoxidation for producing low-carbon welding wire steel, pass through
Use ferrosilicon powder and carbon dust（3:1）Played after mixing and in feeding bin realization refining overall process small lot, the multiple batches of addition top of the slag
Whole refining process clinker foaming and deoxidation effect, clinker bubble level is more high more stable, and carbon increasing amount is smaller, composition carbon member
Element is in controlled range.Ferrosilicon powder can when clinker foams FeO+MnO in abundant reducing slag, improve Cleanliness of Molten Steel.
In order to solve the above technical problems, the technical solution used in the present invention is as follows：A kind of LF for producing low-carbon welding wire steel
Refinement and deoxidation method, molten steel is through converter smelting, into the refining of LF stoves；Ferrosilicon powder and toner mixture are used as foaming in LF stoves
Deoxidier, realizes overall process small lot, diffusive deoxidation is carried out on the multiple batches of addition top of the slag, keep whole refining by the feed bin material that shakes
Process clinker foams and reducing atmosphere.
Ferrosilicon powder and carbon dust mass ratio are 3 in foaming deoxidier of the present invention:1.
Carbon dust technical indicator is in foaming deoxidier of the present invention：C >=97%, ash content≤1.0%, S≤0.30%, N ＜
0.03%, granularity 2-5mm；Ferrosilicon powder technical indicator is in the foaming deoxidier：Si >=68.0%, moisture content ＜ 0.2%, granularity 2~
4mm。
Whole refining process of the present invention controls clinker FeO+MnO contents≤1.0%.
Converter smelting process of the present invention, endpoint carbon content of converter is controlled in C：0.03-0.05%.
Converter smelting process of the present invention, converter tapping process carries out alloying using ferrosilicon and silicomangan, adds
0.5-0.8kg/ tons of steel of Si-Al-Ba alloy, 4kg/ tons of steel of lime, 4kg/ tons of steel of refining slag, tapping is finished, ladle chemistry and quality
Percentage composition control is as follows：C：0.04-0.06%, Al≤0.006%, lift by crane temperature >=1580 DEG C.
When molten steel of the present invention reaches LF stoves, connect argon gas and carry out broken shell, into after processing position, first add lime 2-
3kg/ tons of steel, thermometric >=1550 DEG C after stirring start bottom electrode heating.
LF stoves refining procedure of the present invention, heat time first time control starts after 2-3min in 8-10min, heating,
0.25-0.4kg/ tons of steel of ferrosilicon powder and toner mixture, continuous heating process small batch, many batches are added to the top of the slag by feed bin
Secondary addition ferrosilicon powder and toner mixture, the control of mixture addition 0.15-0.25kg/ ton steel/time, addition number of times >=3 time,
Heating process Bottom Blowing Flow Rate Control is in 150-200NL/min, and the addition overall control of first time heating process mixture is in 0.7-
1.4kg/ tons of steel, 2min forbids adding ferrosilicon powder and toner mixture before heating terminates, heating dipped in time after terminating slag specimen sampling,
Thermometric, scoriform bleach, slag discoloration is green.
LF stoves refining procedure of the present invention, it is qualified according to first piece of timely adjusting component of steel sample, opened with reference to liquid steel temperature
Begin to heat for second, this process adds number of times >=2 time of ferrosilicon powder and toner mixture, and overall control is in 0.4-0.5 kg/
Ton steel.
LF stoves refining procedure of the present invention, whole stove steel ferrosilicon powder and toner mixture add quality control in 1.1-
1.9kg/ tons of steel, molten steel recarburization 0.005-0.015%, molten steel oxygen activity is controlled in 5-10ppm.Pass through carbon dust foaming and ferrosilicon powder
Deoxidation quickly reduces the oxidisability of slag, and overall process keeps refining process reducing atmosphere.
Mentality of designing of the present invention：The foaming deoxidation of whole calcium carbides is replaced with ferrosilicon powder and toner mixture, makes the full mistake of refining
The foaming of journey clinker is stable, chemically reacts as follows：C+（FeO）=Fe+C0(g)、C+（MnO）=Mn+C0(g)、Si+（FeO）=Fe+
(SiO2)、Si+（MnO）=Mn+(SiO2), oxidation goes reduction thorough in slag, keeps whole refining process to reduce atmosphere in white slag.Will
Ferrosilicon powder and carbon dust press 3:Play whole in upper LF feed bins after 1 mechanical mixture, refining overall process small lot, the multiple batches of addition top of the slag
Refining process clinker foams and deoxidation effect, is foamed using carbon dust clinker stable, by increasing refining heating process bottom blowing flow,
Ensure that mixture fully reacts with clinker, molten steel recarburization 0.005-0.015%.
The beneficial effect produced using above-mentioned technical proposal is：1st, LF refining dedusting method is top suction type, it is to avoid ferrosilicon
Powder and toner mixture are taken away by blower fan, more more stable than side-suction type.2nd, produced by using ferrosilicon powder and toner mixture
Low-carbon welding wire steel refines slag making deoxidation, plays lasting foaming, the deoxygenation function of mixture, solves the refining full mistake of low-carbon welding wire steel
Journey reducing atmosphere, reduces secondary oxidation of steel, improves Cleanliness of Molten Steel.3rd, the present invention carries out deoxidation slag making, tool using mixture
Have than traditional more preferable performance of slag making deoxidization technique, meanwhile, the inexpensive STEELMAKING PRODUCTION of green non-pollution is realized, with aobvious
The economic benefit and social benefit of work, improve enterprise competitiveness, have expanded survival and development space.4th, molten steel recarburization 0.005-
0.015%, molten steel oxygen activity is controlled in 5-10ppm, whole refining process clinker FeO+MnO content≤1.0%.
Embodiment
The present invention is described in further details with reference to specific embodiment.
The LF refining method of deoxidation of low-carbon welding wire steel, is comprised the following steps that：
1）LF refining furnace prepares：Top suction type dedusting, by ferrosilicon powder and carbon dust（3:1）Mixing loads LF furnace charges storehouse after stirring.
2）Converter terminal and tapping control：Endpoint carbon content of converter is controlled in C：0.03-0.05%；Converter tapping process is adopted
Alloying is carried out with ferrosilicon and silicomangan, 0.5-0.8kg/ tons of steel of Si-Al-Ba alloy, 4kg/ tons of steel of lime, 4kg/ tons of refining slag are added
Steel, tapping is finished, and ladle chemistry and weight/mass percentage composition control are as follows：C：0.04-0.06%, Al≤0.006%, lifting temperature
>=1580 DEG C of degree.
3）LF refining deoxidation slag making：When molten steel reaches LF stoves, connect argon gas and carry out broken shell, into after processing position, first add
2-3kg/ tons of steel of lime, thermometric >=1550 DEG C after stirring start bottom electrode heating.Heat time first time is controlled in 8-10min,
Heating starts after 2-3min, and 0.25-0.4kg/ tons of steel of ferrosilicon powder and toner mixture, continuous heating are added to the top of the slag by feed bin
Process small batch, multiple batches of addition ferrosilicon powder and toner mixture, mixture addition control 0.15-0.25kg/ tons of steel/
It is secondary, add number of times >=3 time, heating process Bottom Blowing Flow Rate Control in 150-200NL/min, first time heating process mixture plus
Enter overall control in 0.7-1.4kg/ tons of steel, 2min forbids adding ferrosilicon powder and toner mixture before heating terminates, and heating terminates
Dip in slag specimen sampling, thermometric in time afterwards, scoriform bleach, slag discoloration is green.It is qualified according to first piece of timely adjusting component of steel sample,
Start second of heating with reference to liquid steel temperature, this process adds number of times >=2 time of ferrosilicon powder and toner mixture, overall control
In 0.4-0.5kg/ tons of steel.Start after contents temperature is suitable Calcium treatment and it is weak blow, whole stove steel ferrosilicon powder and toner mixture add
Enter quality control in 1.1-1.9kg/ tons of steel, the oxidisability of slag, and full mistake are quickly reduced by carbon dust foaming and ferrosilicon powder deoxidation
Journey keeps refining process reducing atmosphere.Molten steel recarburization 0.005-0.0015%, molten steel oxygen activity is controlled in 5-10ppm.Whole refining
Process clinker FeO+MnO content≤1.0%.
Embodiment 1
Steel grade ER70S-6 LF refining method of deoxidation, is comprised the following steps that：
1）LF refining furnace prepares：Top suction type dedusting, by ferrosilicon powder and carbon dust（3:1）Mixing loads LF furnace charges storehouse after stirring.
2）Converter terminal and tapping control：Endpoint carbon content of converter is controlled in C：0.03%；Converter tapping process uses ferrosilicon
Alloying is carried out with silicomangan, 0.5kg/ tons of steel of Si-Al-Ba alloy are added, 4kg/ tons of steel of lime, 4kg/ tons of steel of refining slag have been tapped
Finish, ladle chemistry and weight/mass percentage composition control are as follows：C：0.04%, Al：0.004%, lift by crane 1585 DEG C of temperature.
3）LF refining deoxidation slag making：When molten steel reaches LF stoves, connect argon gas and carry out broken shell, into after processing position, first add
2kg/ tons of steel of lime, 1555 DEG C of thermometric after stirring start bottom electrode heating.Heat time first time is controlled in 10min, and heating is opened
After beginning 3min, by feed bin to the top of the slag add 0.4kg/ tons of steel of ferrosilicon powder and toner mixture, continuous heating process small batch,
Multiple batches of addition ferrosilicon powder and toner mixture, mixture addition, in 0.25kg/ tons of steel, add number of times 4 times per secondary control, plus
Thermal process Bottom Blowing Flow Rate Control in 150NL/min, the addition overall control of first time heating process mixture in 1.4kg/ tons of steel,
2min forbids adding ferrosilicon powder and toner mixture before heating terminates, and slag specimen sampling, thermometric are dipped in heating in time after terminating, scoriform becomes
Transparent, slag discoloration is green.It is qualified according to first piece of timely adjusting component of steel sample, start second of heating with reference to liquid steel temperature,
The number of times of this process addition ferrosilicon powder and toner mixture 3 times, overall control is in 0.5kg/ tons of steel.Opened after contents temperature is suitable
Beginning soft blow, whole stove steel ferrosilicon powder and toner mixture add quality control in 1.9kg/ tons of steel, pass through carbon dust foaming and ferrosilicon powder
Deoxidation quickly reduces the oxidisability of slag, and overall process keeps refining process reducing atmosphere.
Molten steel recarburization 0.015%, preferably, FeO+MnO is oxygen activity in 0.8%, steel in slag for process clinker foaming deoxidation
8ppm。
Embodiment 2
Steel grade EM12K LF refining method of deoxidation, is comprised the following steps that：
1）LF refining furnace prepares：Top suction type dedusting, by ferrosilicon powder and carbon dust（3:1）Mixing loads LF furnace charges storehouse after stirring.
2）Converter terminal and tapping control：Endpoint carbon content of converter is controlled in C：0.04%；Converter tapping process uses ferrosilicon
Alloying is carried out with silicomangan, 0.8kg/ tons of steel of Si-Al-Ba alloy are added, 4kg/ tons of steel of lime, 4kg/ tons of steel of refining slag have been tapped
Finish, ladle chemistry and weight/mass percentage composition control are as follows：C：0.05%, Al：0.005%, lift by crane 1580 DEG C of temperature.
3）LF refining deoxidation slag making：When molten steel reaches LF stoves, connect argon gas and carry out broken shell, into after processing position, first add
2.5kg/ tons of steel of lime, 1550 DEG C of thermometric after stirring start bottom electrode heating.The control of heat time first time is in 8min, heating
Start after 2min, it is small quantities of during adding 0.25kg/ tons of steel of ferrosilicon powder and toner mixture, continuous heating to the top of the slag by feed bin
Amount, multiple batches of addition ferrosilicon powder and toner mixture, mixture addition, in 0.15kg/ tons of steel, add number of times 3 per secondary control
Secondary, heating process Bottom Blowing Flow Rate Control is in 200NL/min, and the addition overall control of first time heating process mixture is in 0.7kg/
Ton steel, 2min forbids adding ferrosilicon powder and toner mixture before heating terminates, and slag specimen sampling, thermometric are dipped in heating in time after terminating,
Scoriform bleach, slag discoloration is green.It is qualified according to first piece of timely adjusting component of steel sample, start second with reference to liquid steel temperature
The number of times of heating, this process addition ferrosilicon powder and toner mixture 2 times, overall control is in 0.4kg/ tons of steel.Contents temperature is closed
Start soft blow after suitable, whole stove steel ferrosilicon powder and toner mixture add quality control in 1.1kg/ ton steel, by carbon dust foaming with
Ferrosilicon powder deoxidation quickly reduces the oxidisability of slag, and overall process keeps refining process reducing atmosphere.
Molten steel recarburization 0.005%, preferably, FeO+MnO is oxygen activity in 1.0%, steel in slag for process clinker foaming deoxidation
10ppm。
Embodiment 3
Steel grade ER55-Ti LF refining method of deoxidation, is comprised the following steps that：
1）LF refining furnace prepares：Top suction type dedusting, by ferrosilicon powder and carbon dust（3:1）Mixing loads LF furnace charges storehouse after stirring.
2）Converter terminal and tapping control：Endpoint carbon content of converter is controlled in C：0.05%；Converter tapping process uses ferrosilicon
Alloying is carried out with silicomangan, 0.6kg/ tons of steel of Si-Al-Ba alloy are added, 4kg/ tons of steel of lime, 4kg/ tons of steel of refining slag have been tapped
Finish, ladle chemistry and weight/mass percentage composition control are as follows：C：0.06%, Al：0.006%, lift by crane 1590 DEG C of temperature.
3）LF refining deoxidation slag making：When molten steel reaches LF stoves, connect argon gas and carry out broken shell, into after processing position, first add
3kg/ tons of steel of lime, 1560 DEG C of thermometric after stirring start bottom electrode heating.Heat time first time is controlled in 9min, and heating is opened
After beginning 3min, by feed bin to the top of the slag add 0.3kg/ tons of steel of ferrosilicon powder and toner mixture, continuous heating process small batch,
Multiple batches of addition ferrosilicon powder and toner mixture, mixture addition, in 0.2kg/ tons of steel, add number of times 4 times per secondary control, plus
Thermal process Bottom Blowing Flow Rate Control in 180NL/min, the addition overall control of first time heating process mixture in 1.1kg/ tons of steel,
2min forbids adding ferrosilicon powder and toner mixture before heating terminates, and slag specimen sampling, thermometric are dipped in heating in time after terminating, scoriform becomes
Transparent, slag discoloration is green.It is qualified according to first piece of timely adjusting component of steel sample, start second of heating with reference to liquid steel temperature,
The number of times of this process addition ferrosilicon powder and toner mixture 3 times, overall control is in 0.45kg/ tons of steel.After contents temperature is suitable
Start soft blow, whole stove steel ferrosilicon powder and toner mixture add quality control in 1.55kg/ tons of steel, pass through carbon dust foaming and ferrosilicon
Powder deoxidation quickly reduces the oxidisability of slag, and overall process keeps refining process reducing atmosphere.
Molten steel recarburization 0.008%, preferably, FeO+MnO is oxygen activity 5ppm in 0.7%, steel in slag for process clinker foaming deoxidation.
Above example is only used to illustrative and not limiting technical scheme, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacement, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover the power in the present invention
Among sharp claimed range.
Claims (10)
1. a kind of LF refining method of deoxidation for producing low-carbon welding wire steel, it is characterised in that molten steel is through converter smelting, into LF stoves essence
Refining；LF stoves use ferrosilicon powder and toner mixture as foaming deoxidier, by feed bin shake material realize overall process small lot, it is many
Batch, which is added, carries out diffusive deoxidation on the top of the slag, keep whole refining process clinker foaming and reducing atmosphere.
2. a kind of LF refining method of deoxidation for producing low-carbon welding wire steel according to claim 1, it is characterised in that described
Ferrosilicon powder and carbon dust mass ratio are 3 in foaming deoxidier:1.
3. a kind of LF refining method of deoxidation for producing low-carbon welding wire steel according to claim 1, it is characterised in that the hair
Carbon dust technical indicator is in bubble deoxidier：C >=97%, ash content≤1.0%, S≤0.30%, N ＜ 0.03%, 2~5mm of granularity；It is described
Ferrosilicon powder technical indicator is in foaming deoxidier：Si >=68.0%, moisture content ＜ 0.2%, 2~4mm of granularity.
4. a kind of LF refining method of deoxidation for producing low-carbon welding wire steel according to claim 1, it is characterised in that described whole
Individual refining process controls clinker FeO+MnO contents≤1.0%.
5. a kind of LF refining method of deoxidation for producing low-carbon welding wire steel according to claim 1-4 any one, its feature
It is, the converter smelting process, endpoint carbon content of converter is controlled in C：0.03-0.05%.
6. a kind of LF refining method of deoxidation for producing low-carbon welding wire steel according to claim 1-4 any one, its feature
It is, the converter smelting process, converter tapping process carries out alloying using ferrosilicon and silicomangan, adds Si-Al-Ba alloy 0.5-
0.8kg/ tons of steel, 4kg/ tons of steel of lime, 4kg/ tons of steel of refining slag, tapping is finished, ladle chemistry and weight/mass percentage composition control
System is as follows：C：0.04-0.06%, Al≤0.006%, lift by crane temperature >=1580 DEG C.
7. a kind of LF refining method of deoxidation for producing low-carbon welding wire steel according to claim 1-4 any one, its feature
It is, when the molten steel reaches LF stoves, connects argon gas and carry out broken shell, into after processing position, first add 2-3kg/ tons of steel of lime, stir
Rear thermometric >=1550 DEG C are mixed, start bottom electrode heating.
8. a kind of LF refining method of deoxidation for producing low-carbon welding wire steel according to claim 1-4 any one, its feature
Be, the LF stoves refining procedure, the control of heat time first time is in 8-10min, and heating starts after 2-3min, by feed bin to
The top of the slag adds 0.25-0.4kg/ tons of steel of ferrosilicon powder and toner mixture, continuous heating process small batch, multiple batches of addition ferrosilicon
Powder and toner mixture, mixture addition control 0.15-0.25kg/ ton steel/time, addition number of times >=3 time, heating process bottom
Wind drift amount control in 150-200NL/min, the addition overall control of first time heating process mixture in 0.7-1.4kg/ tons of steel,
2min forbids adding ferrosilicon powder and toner mixture before heating terminates, and slag specimen sampling, thermometric are dipped in heating in time after terminating, scoriform becomes
Transparent, slag discoloration is green.
9. a kind of LF refining method of deoxidation for producing low-carbon welding wire steel according to claim 1-4 any one, its feature
It is, the LF stoves refining procedure, it is qualified according to first piece of timely adjusting component of steel sample, start second with reference to liquid steel temperature and add
Heat, this process adds number of times >=2 time of ferrosilicon powder and toner mixture, and overall control is in 0.4-0.5kg/ tons of steel.
10. a kind of LF refining method of deoxidation for producing low-carbon welding wire steel according to claim 1-4 any one, its feature
It is, the LF stoves refining procedure, whole stove steel ferrosilicon powder and toner mixture add quality control in 1.1-1.9kg/ tons of steel, steel
Water carburetting 0.005-0.015%, molten steel oxygen activity is controlled in 5-10 ppm.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108913836A (en) * | 2018-07-23 | 2018-11-30 | 攀钢集团攀枝花钢铁研究院有限公司 | The production method of welding rod steel H08A |
| CN108950124A (en) * | 2018-07-23 | 2018-12-07 | 攀钢集团攀枝花钢铁研究院有限公司 | The method for making steel of welding rod steel H08A |
| CN113667790A (en) * | 2021-07-13 | 2021-11-19 | 邢台钢铁有限责任公司 | Production method of gas-shielded welding wire steel |
| CN114653957A (en) * | 2022-03-28 | 2022-06-24 | 天工爱和特钢有限公司 | Special 8-ton tundish for atomized powder making and use method thereof |
| CN115652030A (en) * | 2022-10-28 | 2023-01-31 | 包头钢铁（集团）有限责任公司 | Production method for improving cleanliness of low-carbon and high-silicon manganese welding steel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994686A (en) * | 2012-11-22 | 2013-03-27 | 河北钢铁股份有限公司承德分公司 | Technology for smelting ER70S-6 welding wire steel through utilizing vanadium-containing molten iron |
| CN103667957A (en) * | 2013-11-08 | 2014-03-26 | 中冶陕压重工设备有限公司 | ZG25MnSY6 casting material and method for preparing casting |
| CN104911497A (en) * | 2015-06-10 | 2015-09-16 | 本钢板材股份有限公司 | Method for producing high-strength carburized gear steel 19CrNi5 |
-
2017
- 2017-03-29 CN CN201710197468.8A patent/CN107164605A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102994686A (en) * | 2012-11-22 | 2013-03-27 | 河北钢铁股份有限公司承德分公司 | Technology for smelting ER70S-6 welding wire steel through utilizing vanadium-containing molten iron |
| CN103667957A (en) * | 2013-11-08 | 2014-03-26 | 中冶陕压重工设备有限公司 | ZG25MnSY6 casting material and method for preparing casting |
| CN104911497A (en) * | 2015-06-10 | 2015-09-16 | 本钢板材股份有限公司 | Method for producing high-strength carburized gear steel 19CrNi5 |
Non-Patent Citations (1)
| Title |
|---|
| 李晶: "《LF精炼技术》", 31 December 2009 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108913836A (en) * | 2018-07-23 | 2018-11-30 | 攀钢集团攀枝花钢铁研究院有限公司 | The production method of welding rod steel H08A |
| CN108950124A (en) * | 2018-07-23 | 2018-12-07 | 攀钢集团攀枝花钢铁研究院有限公司 | The method for making steel of welding rod steel H08A |
| CN113667790A (en) * | 2021-07-13 | 2021-11-19 | 邢台钢铁有限责任公司 | Production method of gas-shielded welding wire steel |
| CN114653957A (en) * | 2022-03-28 | 2022-06-24 | 天工爱和特钢有限公司 | Special 8-ton tundish for atomized powder making and use method thereof |
| CN115652030A (en) * | 2022-10-28 | 2023-01-31 | 包头钢铁（集团）有限责任公司 | Production method for improving cleanliness of low-carbon and high-silicon manganese welding steel |
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