CN108913836A - The production method of welding rod steel H08A - Google Patents
The production method of welding rod steel H08A Download PDFInfo
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- CN108913836A CN108913836A CN201810814211.7A CN201810814211A CN108913836A CN 108913836 A CN108913836 A CN 108913836A CN 201810814211 A CN201810814211 A CN 201810814211A CN 108913836 A CN108913836 A CN 108913836A
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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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
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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
- C21C7/0006—Adding metallic additives
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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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Abstract
The present invention relates to the production methods of welding rod steel H08A, belong to technical field of ferrous metallurgy.Present invention solves the technical problem that being that the continuous casting time is short in the production process of welding rod steel H08A and slab air blister defect is obvious.The technical solution of the present invention is to provide the production method of welding rod steel H08A, including converter smelting, LF refining, continuous casting, it is Al, Al that main component is added in LF refining2O3, CaO slag modifier for refining diffusive deoxidation, control molten steel oxygen activity be 0.0020%~0.0040%, Als content be 0.001%~0.005%, and it is 0.02%~0.03% that ferrosilicon, which is added, and controls Si content, then carries out Calcium treatment.The present invention by formulating reasonable molten steel control system, can steady and continuous production without internal flaw welding rod steel H08A continuous casting billet.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, and in particular to the production method of welding rod steel H08A.
Background technique
H08A welding rod steel is important the raw material of welding rod production, belongs to the steel grade of low-carbon, low silicon, low aluminium, with other steel
Kind one of maximum difference make sure that the chemical component of finished steel, component requirements Si≤0.03%, C≤0.08%,
Al≤0.005%.It needs to be added deoxidier in the production process of H08A welding rod steel and carries out deoxidation, generally using aluminium as deoxidation
Agent, and the addition of deoxidier can generate a large amount of field trashes is easy blocking middle water containing opening, influences the castability and continuous casting of molten steel
Direct motion, since deoxidation is bad, causes slab to generate bubble but if deoxidier is insufficient.Thus, production H08A welding rod steel needs to make
Fixed reasonable molten steel control system, will especially take into account the control of bubble and castability.
Patent CN104480250A discloses a kind of process of efficient deoxidation of welding rod steel, mainly by centre
Metallic aluminium is first placed in packet, refined molten steel injection tundish is then subjected to deoxidation, however generation is largely mingled with by this method
Object stays in molten steel, is difficult to remove, and influences pourability of molten steel.Patent CN1566370A discloses a kind of continuous casting carbon welding steel rod
Aluminium manganese iron pre-deoxidation is added by converter tapping in production method in ladle, and then refining determines oxygen online, feeds aluminum steel or aluminium
Grain, accurate to adjust molten steel oxygen activity, which only leans on aluminum steel or ferro-aluminum carries out direct deoxidation, can generate in molten steel a large amount of
Aluminate, and the type impurity is the main substance for blocking submersed nozzle, therefore is be easy to cause using this method
Nozzle blocking.Patent CN1455004A discloses a kind of ultra low silicon welding rod steel continuous casting production process, in deoxidation alloying process
In, following deoxidier is added by molten steel total amount：Calcium carbide, ferro-titanium and calcium-silicon etc. are added into steel ladle, to converter
Interior addition aluminum-manganese-iron alloy, the patent are all added by the way that deoxidier is added in batches although avoiding deoxidier to a certain extent
Enter bring negative effect, but being monitored to oxygen activity, however it remains the problem of bubble and castability.
Summary of the invention
Present invention solves the technical problem that being that the continuous casting time is short in the production process of welding rod steel H08A and slab bubble lacks
It falls into obvious.
The technical solution that the present invention solves above-mentioned technical problem is to provide the production method of welding rod steel H08A, and step includes turning
Furnace smelting, LF refining, continuous casting, it is characterised in that：
A. when the endpoint molten steel carbon content of converter smelting is 0.04%~0.05%, aluminium is added in slag-stopping tapping, tapping process
Ferroalloy pre-deoxidation controls oxygen activity 0.005%~0.010%；
B.LF refining process be added slag modifier for refining deoxidation, control molten steel LF heating after oxygen activity be 0.0020%~
0.0040%, Als content are 0.001%~0.005%, and it is 0.02%~0.03% that Antaciron control Si content, which is added, so
After carry out Calcium treatment, the slag modifier for refining is that main component is Al, Al2O3, CaO mixture, wherein Als, which refers to, is dissolved in
Al in molten steel.
Wherein, alfer at least meets one in following：
The composition of alfer is calculated in mass percent as 40%Al, 58%Fe, and remaining is impurity；
Alfer additional amount is 3~4kg/t steel.
Wherein, slag-stopping tapping uses slide plate pushing off the slag, the control of the lower quantity of slag in 4~6kg/ tons of steel, 1650 DEG C of tapping temperature~
1680℃。
Wherein, slag modifier for refining at least meets one in following：
Slag modifier for refining is calculated in mass percent the Al of the Al including 5%~10%, 60%~70%2O3, 25%~35%
CaO；
The additional amount of slag modifier for refining is 4~6kg/t steel.
Wherein, the slag modifier for refining is added after molten steel reaches LF processing station by high hopper.
Wherein, Antaciron at least meets one in following：
The composition of Antaciron is calculated in mass percent as 75%Si, 23%Fe, and remaining is impurity；
The additional amount of Antaciron is 0.4~0.6kg/ tons of steel；
Antaciron is added in molten steel in the outbound preceding 10~12min of LF.
Wherein, the Calcium treatment is that iron calcium line is added, and specification 200g/m, additional amount is 2~5m/t steel.
Wherein, the iron calcium line at least meets one in following：
The diameter of iron calcium line is 10mm；
The ingredient of iron calcium line is calculated in mass percent the Ca of the Fe and 20%~30% including 70%~80%；
Iron calcium line 8min~10min before LF is outbound is added, and adds in 2min, blowing argon gas after addition
5min or more.
Wherein, control refines outlet temperature at 1580 DEG C~1595 DEG C after Calcium treatment.
Wherein, the continuous casting process carries out continuous casting using 160mm × 160mm or 200mm × 200mm section, and pulling rate is
1.5~2.0m/min.
The beneficial effects of the invention are as follows：
Slag modifier for refining is added in the ladle top of the slag in the present invention, deoxidation is carried out by the way of diffusive deoxidation, deoxidation products stays
In slag, molten steel will not be mingled with because of deoxidation；The present invention carries out Calcium treatment on the basis of strict control oxygen activity, significantly
Improve the castability of molten steel；Using method of the invention, molten steel even pours the time and can achieve 500min or more, and gained is cast
Base is almost without air blister defect.
Specific embodiment
Calcium treatment can be controlled it and be in a liquid state at a temperature of steel-making continuous casting, be conducive to by the form of change aluminium deoxidation product
The inclusion floating of aluminium improves castability, however if oxygen activity controls improper, oxygen easy to form to avoid the blocking mouth of a river
Change calcium, cannot not only improve pourability of molten steel, easily cause nozzle blocking instead.Therefore, when using Calcium treatment, it is necessary to steady
Surely molten steel oxygen activity is controlled.Meanwhile to solve slab air blister defect, present invention firstly provides pass through in welding rod steel H08A steel
The method for controlling Si and Als content to control air blister defect.By formulating reasonable molten steel control system, the present invention can stablize company
Continuous production is without internal flaw welding rod steel H08A continuous casting billet.
The present invention provides the production method of welding rod steel H08A, and step includes converter smelting, LF refining, continuous casting, specifically：
A. when the endpoint molten steel carbon content of converter smelting is 0.04%~0.05%, aluminium is added in slag-stopping tapping, tapping process
Ferroalloy pre-deoxidation controls oxygen activity 0.005%~0.010%；
B.LF refining process be added slag modifier for refining deoxidation, control molten steel LF heating after oxygen activity be 0.0020%~
0.0040%, Als content are 0.001%~0.005%, and it is 0.02%~0.03% that Antaciron control Si content, which is added, so
After carry out Calcium treatment, the slag modifier for refining is that main component is Al, Al2O3, CaO mixture, wherein Als, which refers to, is dissolved in
Al in molten steel.
Found by lot of experiment validation, when in oxygen activity > 0.0040%, continuous casting process as temperature reduces, continuous meeting
There is oxygen bubble to be precipitated in crystallizer, forms a large amount of air blister defects；As oxygen activity < 0.0020%, pass through the chemistry of aluminium and oxygen
Balance is it is found that Al, that is, Als in molten steel can be higher, but as continuous casting process temperature reduces, in continuous casting, have a large amount of Al and
Oxygen combines and forms Al2O3, this part Al2O3It is formed in continuous casting sprue, the mouth of a river will be blocked, continuous casting is caused to terminate.
The present invention controls air blister defect, Si≤0.01% in molten steel, the company produced by control Si and Als content
Slab will appear bubble, and Si content is lower, then bubble is more, and Al is the key that control oxygen activity and calcium treatment effect member
Element, there are a balances for Al and oxygen activity in molten steel, and by verification experimental verification, Als is controlled in 0.001%~0.005% range, oxygen
Activity can be stablized in the range of 0.0020%~0.0040%, and exceed the range, and oxygen activity will appear excessively high or too low.
Alfer pre-deoxidation is added to ladle in tapping process in the present invention, oxygen activity is reduced to 0.005%~
0.010%, it, can be by oxygen activity stability contorting in 0.0020%~0.0040% model then by the diffusive deoxidation of LF refining slag adjusting agent
In enclosing.
Wherein, the composition of alfer is calculated in mass percent as 40%Al, 58%Fe, and remaining is impurity, and alfer adds
Entering amount is 3~4kg/t steel.
Wherein, slag-stopping tapping uses slide plate pushing off the slag, the control of the lower quantity of slag in 4~6kg/ tons of steel, 1650 DEG C of tapping temperature~
1680℃。
Wherein, the slag modifier for refining is calculated in mass percent the Al of the Al including 5%~10%, 60%~70%2O3、
25%~35% CaO, additional amount are 4~6kg/t steel.Slag adjusting agent additional amount is excessive, and the aluminium in slag adjusting agent is largely brought into
In molten steel, the Als of high-content is formed, the high Als of continuous casting process is oxidized, and forms aluminium oxide, is blocked submersed nozzle, is caused to stop
It pours.
Wherein, the slag modifier for refining is added after molten steel reaches LF processing station by high hopper.In the ladle top of the slag
Slag modifier for refining is added, deoxidation is carried out by the way of diffusive deoxidation, deoxidation products stays in slag, and molten steel will not be because of deoxidation
And it is mingled with.
Wherein, the composition of Antaciron is calculated in mass percent as 75%Si, 23%Fe, and remaining is impurity, Antaciron
Additional amount is 0.4~0.6kg/ tons of steel, and Antaciron is added in molten steel in the outbound preceding 10~12min of LF.Ladle bottom at this time
Argon, molten steel blow ladle slag open, there is an exposed molten steel face, and ferrosilicon is added directly into molten steel.
Wherein, Calcium treatment is that iron calcium line is added, and specification 200g/m, additional amount is 2~5m/t steel.
Wherein, the ingredient of iron calcium line is calculated in mass percent the Ca of the Fe and 20%~30% including 70%~80%, directly
Diameter is 10mm, and 8min~10min is added before LF is outbound, is added in 2min, blowing argon gas 5min or more after addition.Iron calcium line
It is added excessively, forms CaO, nozzle blocking stops pouring；Iron calcium line is added not enough, deoxidation type inclusion Al2O3It cannot effectively be modified as low
Fusing point is mingled with, nozzle blocking, stops pouring.
About LF refining process blowing argon gas, refining process is to add in blowing argon gas always after slag modifier for refining is added
Before entering ferrosilicon, Ar 120~150NL/min of throughput, flow is transferred to 50~80NL/min when ferrosilicon is added, and is then always maintained at
5~8min after to feeding iron calcium line.
Wherein, control refines outlet temperature at 1580 DEG C~1595 DEG C after Calcium treatment.Temperature is excessively high, the leakage of molten steel continuous casting process
Steel stops pouring；Temperature is too low, and molten steel is blocked in crystallizer, stops pouring.
Wherein, the continuous casting process carries out continuous casting using 160mm × 160mm or 200mm × 200mm section, and pulling rate is
1.5~2.0m/min.
Below by way of specific embodiment, the present invention is further illustrated.
Embodiment 1
Welding rod steel H08A is smelted through converter smelting, LF refining, continuous casting step to be made, and specially operation is：Blast-melted warp
It is 0.04% that converter smelting, which controls endpoint carbon content, and tapping process uses alfer pre-deoxidation, and alfer additional amount is
4kg/t steel, oxygen activity are controlled 0.005%~0.010%；Slag modifier for refining 6Kg/t steel is added in LF refining process, controls molten steel
Oxygen activity is 0.0040%, Als content 0.001% after LF is heated, and Antaciron 0.5Kg/t steel control Si is then added and contains
Calcium treatment is carried out again before 0.03%, LF of amount is outbound；Continuous casting process carries out continuous casting using 160mm × 160mm section, and casting speed control is
2.0m/min.Wherein, the slag modifier for refining main component is：10%Al, 65%Al2O3, 25%CaO, the iron calcium line is main
Ingredient is：The Ca of 70% Fe and 30%.
Continuous casting time 8 hours in the present embodiment, the slab center porosity and center segregation of production are respectively 0.5 grade and 1.0
Grade, no other defect.
Embodiment 2
Welding rod steel H08A is smelted through converter smelting, LF refining, continuous casting step to be made, and specially operation is：
It is blast-melted through converter smelting control endpoint carbon content be 0.05%, tapping process use alfer pre-deoxidation,
Alfer additional amount is 3kg/t steel, and oxygen activity is controlled 0.005%~0.010%；LF refining process reaches at LF when molten steel
Slag modifier for refining 4Kg/t steel is added by high hopper behind science and engineering position, oxygen activity is after control molten steel LF heating
0.0020%, Als content 0.005%, the outbound preceding 10min of LF are added Antaciron 0.4Kg/t steel and control Si content 0.02%, LF
Outbound preceding 8min carries out Calcium treatment, iron calcium line 200g/m, diameter 10mm, additional amount 5m/t steel；Continuous casting process using 200mm ×
200mm section carries out continuous casting, casting speed control 1.50m/min.Wherein, slag modifier for refining main component is：10%Al, 65%
Al2O3, 25%CaO, the group of Antaciron becomes 75%Si, 23%Fe, and the iron calcium line main component is：70% Fe and
30% Ca.
Continuous casting time 10 hours in the present embodiment, the slab center porosity and center segregation of production are respectively 1.0 grades and 1.0
Grade, no other defect.
Embodiment 3
Welding rod steel H08A is smelted through converter smelting, LF refining, continuous casting step to be made, and specially operation is：
It is blast-melted through converter smelting control endpoint carbon content be 0.045%, using alfer pre-deoxidation, alfer
Additional amount is 3.5kg/t steel, and oxygen activity is controlled 0.005%~0.010%；LF refining process reaches LF processing station when molten steel
Slag modifier for refining 5Kg/t steel is added by high hopper afterwards, oxygen activity 0.0030% after control molten steel LF heating, Als contains
It measures the outbound preceding 12min of 0.003%, LF and Antaciron 0.6Kg/t steel control Si content 0.025% is added；The outbound preceding 8min of LF into
Row Calcium treatment, iron calcium line 200g/m, diameter 10mm, additional amount 3m/t steel；Continuous casting process is carried out using 160mm × 160mm section
Continuous casting, casting speed control 2.0m/min.The slag modifier for refining main component is：10%Al, 65%Al2O3, 25%CaO.It is described
Iron calcium line main component is：The Ca of 70% Fe and 30%.
Continuous casting time 9 hours in the present embodiment, the slab center porosity and center segregation of production are respectively 0.5 grade and 0.5
Grade, no other defect.
Comparative example 1
Welding rod steel H08A is smelted through converter smelting, LF refining, continuous casting step to be made, and specially operation is：
It is blast-melted through converter smelting control endpoint carbon content be 0.045%, using alfer deoxidation, alfer adds
Entering amount is 3.5kg/t steel；Slag modifier for refining 2Kg/t steel, oxygen activity after molten steel LF is heated is added in LF refining process
0.0080%, Als content 0.003%, is added Antaciron 0.5Kg/t steel, and Si content 0.002% carries out calcium before LF is outbound again
Processing, iron calcium line 200g/m, diameter 10mm, additional amount 3m/t steel；Continuous casting process carries out continuous casting using 160mm × 160mm section,
Casting speed control is 2.0m/min.Wherein, the slag modifier for refining main component is：10%Al, 65%Al2O3, 25%CaO, it is described
Iron calcium line main component is：The Ca of 70% Fe and 30%.
Continuous casting time 0.5 hour in this comparative example seriously causes continuous casting to terminate, the casting of production due to seething in packet in continuous casting
There are a large amount of air blister defects in base cross section.
Comparative example 2
Welding rod steel H08A is smelted through converter smelting, LF refining, continuous casting step to be made, and specially operation is：
It is blast-melted through converter smelting control endpoint carbon content be 0.045%, using alfer pre-deoxidation, alfer
Additional amount is 3.5kg/t steel；Slag modifier for refining 8Kg/t steel, oxygen activity after molten steel LF is heated is added in LF refining process
0.0015%, Als content 0.015% is added Antaciron and controls Si content 0.025%, carries out Calcium treatment, iron again before LF is outbound
Calcium line 200g/m, diameter 10mm, additional amount 3m/t steel；Continuous casting process carries out continuous casting, pulling rate control using 160mm × 160mm section
It is made as 2.0m/min.Wherein, the slag modifier for refining main component is：10%Al, 65%Al2O3, 25%CaO, the iron calcium line
Main component is：The Ca of 70% Fe and 30%.
Continuous casting time 0.5 hour in this comparative example can not continue continuous casting, the slab of production mainly due to nozzle blocking
Center porosity and center segregation are respectively 0.5 grade and 0.5 grade, no other defect.
Comparative example 3
Welding rod steel H08A is smelted through converter smelting, LF refining, continuous casting step to be made, and specially operation is：
It is blast-melted through converter smelting control endpoint carbon content be 0.04%, using alfer pre-deoxidation, alfer
Additional amount is 3.6kg/t steel；Slag modifier for refining 6Kg/t steel, oxygen activity after control molten steel LF heating is added in LF refining process
0.0030%, Als content 0.004%, ferrosilicon is not added before LF is outbound, Si content 0.001% carries out at calcium again before LF is outbound
Reason, iron calcium line 200g/m, diameter 10mm, additional amount 3.5m/t steel；Continuous casting process carries out continuous casting using 160mm × 160mm section,
Casting speed control is 2.0m/min.Wherein, the slag modifier for refining main component is：10%Al, 65%Al2O3, 25%CaO, it is described
Iron calcium line main component is：The Ca of 70% Fe and 30%.
Continuous casting time 8 hours in this comparative example, the slab center porosity and center segregation of production are respectively 0.5 grade and 0.5
Grade, the visible a large amount of air blister defects in slab cross section.
By Examples 1 to 3 and comparative example 1~2 it is found that through the invention converter smelting, LF refining, continuous casting the step of, energy
Effectively control slab quality and molten steel even pours the time, and same working condition, this method can save 2 tundish, improve life
Efficiency is produced, ton steel benefit has significant economic benefit, be worthy of popularization at 20 yuan or more.
Claims (10)
1. the production method of welding rod steel H08A, step includes converter smelting, LF refining, continuous casting, it is characterised in that：
A. when the endpoint molten steel carbon content of converter smelting is 0.04%~0.05%, slag-stopping tapping, tapping process is added ferro-aluminum and closes
Golden pre-deoxidation controls oxygen activity 0.005%~0.010%；
B.LF refining process be added slag modifier for refining diffusive deoxidation, control molten steel LF heating after oxygen activity be 0.0020%~
0.0040%, Als content be 0.001%~0.005%, then be added Antaciron control Si content be 0.02%~
0.03%, then Calcium treatment is carried out, the slag modifier for refining is that main component is Al, Al2O3, CaO mixture, wherein Als refers to
The Al being dissolved in molten steel.
2. the production method of welding rod steel H08A according to claim 1, it is characterised in that：The alfer at least meets
One in following：
The composition of alfer is calculated in mass percent as 40%Al, 58%Fe, and remaining is impurity；
Alfer additional amount is 3~4kg/t steel.
3. the production method of welding rod steel H08A according to claim 1 or 2, it is characterised in that：The slag-stopping tapping uses
Slide plate pushing off the slag, the control of the lower quantity of slag is in 4~6kg/ tons of steel, and 1650 DEG C~1680 DEG C of tapping temperature.
4. the production method of described in any item welding rod steel H08A according to claim 1~3, it is characterised in that：The refining is adjusted
Slag agent at least meets one in following：
Slag modifier for refining is calculated in mass percent the Al of the Al including 5%~10%, 60%~70%2O3, 25%~35%
CaO；
The additional amount of slag modifier for refining is 4~6kg/t steel.
5. the production method of welding rod steel H08A according to any one of claims 1 to 4, it is characterised in that：The refining is adjusted
Slag agent is added after molten steel reaches LF processing station by high hopper.
6. the production method of described in any item welding rod steel H08A according to claim 1~5, it is characterised in that：The ferrosilicon closes
Gold at least meets one in following：
The composition of Antaciron is calculated in mass percent as 75%Si, 23%Fe, and remaining is impurity；
The additional amount of Antaciron is 0.4~0.6kg/ tons of steel；
Antaciron is added in molten steel in the outbound preceding 10~12min of LF.
7. the production method of described in any item welding rod steel H08A according to claim 1~6, it is characterised in that：The Calcium treatment
For iron calcium line, specification 200g/m is added, additional amount is 2~5m/t steel.
8. the production method of welding rod steel H08A according to claim 7, it is characterised in that：Under the iron calcium line at least meets
One in column：
The diameter of iron calcium line is 10mm；
The ingredient of iron calcium line is calculated in mass percent the Ca of the Fe and 20%~30% including 70%~80%；
Iron calcium line 8min~10min before LF is outbound is added, and adds in 2min, blowing argon gas 5min or more after addition.
9. the production method of described in any item welding rod steel H08A according to claim 1~8, it is characterised in that：It is controlled after Calcium treatment
System refining outlet temperature is at 1580 DEG C~1595 DEG C.
10. the production method of described in any item welding rod steel H08A according to claim 1~9, it is characterised in that：The continuous casting mistake
Cheng Caiyong 160mm × 160mm or 200mm × 200mm section carries out continuous casting, and pulling rate is 1.5~2.0m/min.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110643785A (en) * | 2019-01-25 | 2020-01-03 | 广东韶钢松山股份有限公司 | Refining deoxidation method of low-carbon low-silicon welding wire steel |
| CN110684880A (en) * | 2019-11-07 | 2020-01-14 | 广东韶钢松山股份有限公司 | Molten steel refining and continuous casting method for reducing subcutaneous bubbles of low-silicon low-aluminum oxygen-containing steel casting blank |
| CN112280923A (en) * | 2020-09-28 | 2021-01-29 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Smelting method of welding rod steel H08Mn |
| CN112342451A (en) * | 2020-09-02 | 2021-02-09 | 包头钢铁（集团）有限责任公司 | Production method of rare earth-containing H08A electrode steel |
| CN112501488A (en) * | 2020-10-22 | 2021-03-16 | 福建三宝钢铁有限公司 | Preparation process of H08A steel |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629224A (en) * | 2009-08-04 | 2010-01-20 | 重庆科健冶金材料有限公司 | Deoxidation modification agent of molten steel |
| JP2013095947A (en) * | 2011-10-31 | 2013-05-20 | Jfe Steel Corp | Method for producing high cleanliness steel |
| CN104259414A (en) * | 2014-09-16 | 2015-01-07 | 河北钢铁股份有限公司唐山分公司 | Titanium-containing solder wire steel production method capable of alleviating continuous casting nozzle clogging |
| CN104846149A (en) * | 2015-05-28 | 2015-08-19 | 攀钢集团成都钢钒有限公司 | Smelting method of welding rod steel |
| CN104862443A (en) * | 2015-03-31 | 2015-08-26 | 青岛钢铁控股集团有限责任公司 | Smelting method for low-carbon low-silicon wire-welding steel |
| CN106591538A (en) * | 2016-12-02 | 2017-04-26 | 青岛特殊钢铁有限公司 | Environmental-protecting and energy-saving premelting refining slag conditioning agent |
| CN107164605A (en) * | 2017-03-29 | 2017-09-15 | 河钢股份有限公司承德分公司 | A kind of LF refining method of deoxidation for producing low-carbon welding wire steel |
-
2018
- 2018-07-23 CN CN201810814211.7A patent/CN108913836A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629224A (en) * | 2009-08-04 | 2010-01-20 | 重庆科健冶金材料有限公司 | Deoxidation modification agent of molten steel |
| JP2013095947A (en) * | 2011-10-31 | 2013-05-20 | Jfe Steel Corp | Method for producing high cleanliness steel |
| CN104259414A (en) * | 2014-09-16 | 2015-01-07 | 河北钢铁股份有限公司唐山分公司 | Titanium-containing solder wire steel production method capable of alleviating continuous casting nozzle clogging |
| CN104862443A (en) * | 2015-03-31 | 2015-08-26 | 青岛钢铁控股集团有限责任公司 | Smelting method for low-carbon low-silicon wire-welding steel |
| CN104846149A (en) * | 2015-05-28 | 2015-08-19 | 攀钢集团成都钢钒有限公司 | Smelting method of welding rod steel |
| CN106591538A (en) * | 2016-12-02 | 2017-04-26 | 青岛特殊钢铁有限公司 | Environmental-protecting and energy-saving premelting refining slag conditioning agent |
| CN107164605A (en) * | 2017-03-29 | 2017-09-15 | 河钢股份有限公司承德分公司 | A kind of LF refining method of deoxidation for producing low-carbon welding wire steel |
Non-Patent Citations (1)
| Title |
|---|
| 贯生金 等: "天钢LD-LF-CC流程冶炼H08A的生产工艺优化", 《天津冶金》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110643785A (en) * | 2019-01-25 | 2020-01-03 | 广东韶钢松山股份有限公司 | Refining deoxidation method of low-carbon low-silicon welding wire steel |
| CN110643785B (en) * | 2019-01-25 | 2021-06-25 | 广东韶钢松山股份有限公司 | Refining deoxidation method of low-carbon low-silicon welding wire steel |
| CN110684880A (en) * | 2019-11-07 | 2020-01-14 | 广东韶钢松山股份有限公司 | Molten steel refining and continuous casting method for reducing subcutaneous bubbles of low-silicon low-aluminum oxygen-containing steel casting blank |
| CN110684880B (en) * | 2019-11-07 | 2021-06-01 | 广东韶钢松山股份有限公司 | Molten steel refining and continuous casting method for reducing subcutaneous bubbles of low-silicon low-aluminum oxygen-containing steel casting blank |
| CN112342451A (en) * | 2020-09-02 | 2021-02-09 | 包头钢铁（集团）有限责任公司 | Production method of rare earth-containing H08A electrode steel |
| CN112280923A (en) * | 2020-09-28 | 2021-01-29 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Smelting method of welding rod steel H08Mn |
| CN112501488A (en) * | 2020-10-22 | 2021-03-16 | 福建三宝钢铁有限公司 | Preparation process of H08A steel |
| CN112501488B (en) * | 2020-10-22 | 2021-10-26 | 福建三宝钢铁有限公司 | Preparation process of H08A steel |
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Application publication date: 20181130 |