CN106086298B - A kind of smelting process of low-phosphorous-low titanium-low-sulfur steel - Google Patents

A kind of smelting process of low-phosphorous-low titanium-low-sulfur steel Download PDF

Info

Publication number
CN106086298B
CN106086298B CN201610480900.XA CN201610480900A CN106086298B CN 106086298 B CN106086298 B CN 106086298B CN 201610480900 A CN201610480900 A CN 201610480900A CN 106086298 B CN106086298 B CN 106086298B
Authority
CN
China
Prior art keywords
steel
slag
low
lime
electric furnace
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.)
Active
Application number
CN201610480900.XA
Other languages
Chinese (zh)
Other versions
CN106086298A (en
Inventor
勾新勇
孙永喜
于辉
王永强
王宝
陶洪伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Iron and Steel Group Co Ltd SISG
Original Assignee
Shandong Iron and Steel Group Co Ltd SISG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Iron and Steel Group Co Ltd SISG filed Critical Shandong Iron and Steel Group Co Ltd SISG
Priority to CN201610480900.XA priority Critical patent/CN106086298B/en
Publication of CN106086298A publication Critical patent/CN106086298A/en
Application granted granted Critical
Publication of CN106086298B publication Critical patent/CN106086298B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C21C5/52—Manufacture of steel in electric furnaces
    • 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
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/54—Processes yielding slags of special composition
    • 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
    • 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
    • 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
    • C21C7/10—Handling in a vacuum
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

The invention discloses a kind of smelting process of low-phosphorous low titanium low-sulfur steel, the smelting process includes the following steps：1) electric furnace smelting；2) LF refining；3) VD vacuum processings；4) P≤0.008%, Ti≤0.002%, S≤0.002% in gained molten steel are smelted.The present invention can obtain low-phosphorous low titanium low-sulfur molten steel, while improve the smelting rhythm of electric furnace, reduce the smelting costs such as electric furnace lime, power consumption, it avoids refining and changes slag operation for what desulfurization used, it ensure that the stable smooth operation of production, improve the cleanliness factor of molten steel, improve product quality.

Description

A kind of smelting process of low-phosphorous-low titanium-low-sulfur steel
Technical field
The present invention relates to technical field of ferrous metallurgy, and specifically the present invention relates to a kind of smeltings of low-phosphorous-low titanium-low-sulfur steel Method.
Background technology
Structural adjustment and product up-gradation with steel industry, steel enterprise is faced with the competitive pressure that is on the rise, to survive, It must work hard in kind and quality, make great efforts the product of production high added value, high-tech content, low titanium bearing steel, wind-powered electricity generation are used The high-quality such as steel, high added value steel have become one of staple product of contemporary iron and steel enterprise's research and development, these steel grades are used Continuous cast round billets specification it is big, higher to the purity requirements of steel, particularly phosphorus, titanium, the requirement of sulphur is relatively low.Electric arc furnaces refines at present Steel, the raw material used are mainly steel scrap and molten iron, and molten iron is without pretreatment dephosphorizing, desulfurization, particularly Low-phosphorus Steel, by iron The limitation of water, material source and other conditions.Traditional electric furnace smelting is low-phosphorous-and low titanium-low-sulfur steel, titanium, desulfurization are gone to reach dephosphorization Purpose adds in the slag materials such as a large amount of lime, and smelting cost is high, electric furnace smelting time length (>=50min), and dephosphorization goes titanium difficult, Even because molten steel phosphorus height is sentenced useless, Ti content is unsatisfactory for requiring, and seriously affects the fatigue life of product, refines and goes out sometimes for desulfurization Slag operation is now changed, whole system generation rhythm is unstable, and product quality stability is poor.
Invention content
For deficiency existing for traditional smelting process, the object of the present invention is to provide a kind of low-phosphorous-low titanium-low-sulfur steels Smelting process, obtaining molten steel has extremely low phosphorus, titanium, sulfur content, and electric furnace, which puts steel phosphorus and can reach less than 0.004%, titanium, to be reached 0.0006% hereinafter, P≤0.008%, Ti≤0.002%, S≤0.002%, the smelting process improve simultaneously in finished product molten steel The smelting rhythm of electric furnace, reduces the smelting costs such as electric furnace lime, power consumption, avoids refining and changes slag behaviour for what desulfurization used Make, ensure that the stable smooth operation of production, improve the cleanliness factor of molten steel, improve product quality.
To achieve the above object, the present invention provides following technical solution：
A kind of smelting process of low-phosphorous-low titanium-low-sulfur steel, the smelting process include the following steps：
1) electric furnace smelting：Reasonably combined burden structure, control tank side iron, the pig iron (remelted pig iron), ironcasting etc. is phosphorous high Aniseed addition is not more than the 8% of total charge weight, accomplish in blending process it is lower it is fine and close, it is upper it is loose, intermediate it is high, surrounding is low, fire door Mouth is without aniseed；Loading system is using (60-70) % molten iron+high-quality steel scraps of (30-40) %；Electric furnace uses steel operation more than recrement, remaining Steel, the quantity of slag control (15-25) % in tap；Before smelting lime 10-12 ㎏/t steel, dolomite 6-7 are added in EAF bottom ㎏/t steel, when power transmission 3-5 minutes, add in lime 10-12 ㎏/t steel, and in smelting process plus lime angle is+3 degree, ensure plus lime Shi Zhengchang oxygen blast and reduction splash loss；The clinker of clinker, particularly fritting state is not released too early, reached in molten steel temperature At 1530 DEG C -1550 DEG C, increase foamed slag height and carry out automatic flow slag operation, and roll dynamic furnace body to slagging tap in due course, after flowing slag Suitably add lime 4-5 ㎏/t steel；Molten steel temperature reaches 1560 DEG C -1580 DEG C, carries out changing slag operation, releases initial stage slag, then divide Batch adds in lime, and every batch of addition is 4-6 ㎏/t steel, makes high alkalinity clinker, basicity of slag control to 2.0-3.0；Terminal Temperature is to be not more than 1650 DEG C for principle；Using eccentric furnace bottom slag free tapping technology, time >=140 second of tapping, in tapping process Once there is slag, it is necessary to remove oxidizing slag in time, make refining slag again, then refined；Electric furnace is carried out using low titanium alloy Alloying；In electric furnace steel tapping 1/3 active lime 6-8kg/t steel, accelerating agent 2.0-3kg/t steel, steel-core-aluminium are added in steel stream 2.0-3kg/t steel, dolomite 1.0-2.0kg/t steel；Electric furnace accesses BOTTOM ARGON BLOWING during putting steel, and tapping argon gas early period is (500- 800)NL×2/min；
2) LF refining：LF refining furnace is transported to after tapping, molten steel enters LF power transmission slag making, using arc-covering slag operation, soft Argon controls, and adds slag charge as 4-7kg/t steel, and including lime, slag adjusting agent etc., slag charge overall control target is 13-17kg/t steel； LF uses high alkalinity clinker, and Composition Control is：CaO=45%-55%, Si02=8%-10%, A1203=25%-35%, MgO =5%-10%；LF stoves deoxidation mode concentrates quick aluminium deoxidation using single early period, adds low titanium silicon carbide and carbon dust in batches Diffusive deoxidation is combined, the white slag retention time >=15min, and low titanium silicon carbide feed postition is repeatedly adds, and one time addition is 3-5 ㎏ do not allow whole bag to add in；LF carries out alloying using low titanium alloy；LF refining carries out calcification processing when tapping；
3) VD vacuum processings：LF refining furnace decides whether to carry out taking off slag operation, ladle after smelting according to ladle space Headroom<800mm carries out taking off slag operation, takes off the 1/5-1/3 that the quantity of slag is total quantity of slag, and molten steel is directly transported to VD by headroom >=800mm Stove is smelted；Vacuum processing time is 25-30min, and argon flow amount control takes the analysis of finished product sample simultaneously after 10-70NL/min, broken sky Add in a certain amount of coverture in molten steel face, break it is empty after adjustment argon gas carry out soft blow argon, argon flow amount control is in steel during soft blow argon Water level fine motion, soft blow argon time control is in 15-40min；
4) P≤0.008%, Ti≤0.002%, S≤0.002% in gained molten steel are smelted.
Main advantages of the present invention are：
1) this method electric furnace completion dephosphorization goes the titanium time that can shorten 10-15min, and lime consumption reduces 10-20kg/t steel, smelting Refining power consumption reduces amplitude >=35kwh/t steel, and electric furnace, which puts steel phosphorus and can reach less than 0.004%, titanium, reaches less than 0.0006%.
2) obtaining has extremely low phosphorus, titanium, sulfur content in molten steel, and finished product molten steel P≤0.008%, Ti≤0.002%, S≤ 0.002%.
3) it avoids refining and changes slag operation for what desulfurization used.It ensure that the stable smooth operation of production, improve molten steel Cleanliness factor improves product quality.
Specific embodiment
With reference to embodiment, the present invention is furture elucidated.
Embodiment 1
Wind power flange S355NL is smelted using this method, the described method comprises the following steps：
1) electric furnace smelting：Total 125 tons of charge weight, 80 tons of molten iron, 45 tons of steel scrap (tank side iron, the pig iron (remelted pig iron), ironcasting Etc. phosphorous 8 tons high of aniseed addition, roll useless 33 tons, 4 tons of cropping), accomplish in blending process it is lower it is fine and close, it is upper it is loose, intermediate it is high, Surrounding is low, stove gate is without aniseed；Electric furnace uses steel operation more than recrement, and Yu Gang, quantity of slag control are at 25 tons or so；In electric furnace before smelting Furnace bottom adds in 1.2 tons of lime, 0.8 ton of dolomite, and when power transmission 3-5 minute adds in 1.2 tons of lime, and lime angle is added in smelting process For+3 degree, normal oxygen blast and reduction splash loss when ensureing to add lime；The stove of clinker, particularly fritting state is not released too early Slag, power transmission 8min or so, power failure oxygen blast increases (FeO) in slag, when molten steel temperature reaches 1530 DEG C -1550 DEG C, increases bubble Foam slag height carries out automatic flow slag operation, and rolls dynamic furnace body to slagging tap in due course, and lime 500kg is suitably added after flowing slag；Molten steel Temperature reaches 1560 DEG C -1580 DEG C, carries out changing slag operation, releases initial stage slag, then add in lime in batches, every batch of addition is 500kg makes high alkalinity clinker, basicity of slag control to 2.0-3.0；Outlet temperature is to be not more than 1650 DEG C for principle；Using inclined Heart furnace bottom slag free tapping technology, time >=140 second of tapping, once there is slag in tapping process, it is necessary to oxidizing slag is removed in time, Again refining slag is made, then is refined；Electric furnace carries out alloying using low titanium alloy；It is added in electric furnace steel tapping 1/3 with steel stream Active lime 800kg, accelerating agent 300kg, steel-core-aluminium 300kg, dolomite 125kg；Electric furnace accesses BOTTOM ARGON BLOWING during putting steel, goes out Steel argon gas early period is 500NL × 2/min；
2) LF refining：LF refining furnace is transported to after tapping, molten steel enters LF power transmission slag making, using arc-covering slag operation, soft Argon controls, and adds 300 ㎏ of lime, 200 ㎏ of slag adjusting agent；LF uses high alkalinity clinker, and Composition Control is：CaO=45%- 55%th, Si02=8%-10%, A1203=25%-35%, MgO=5%-10%；LF stoves deoxidation mode is using single collection early period In quick aluminium deoxidation, add low titanium silicon carbide in batches and carbon dust diffusive deoxidation is combined, it is the white slag retention time >=15min, low For silicon titanium-carbide feed postition repeatedly to add, one time addition is 3-5 ㎏, and whole bag is not allowed to add in；LF using low titanium alloy into Row alloying；LF refining carries out calcification processing when tapping；
3) VD vacuum processings：LF refining furnace decides whether to carry out taking off slag operation, ladle after smelting according to ladle space Headroom<800mm carries out taking off slag operation, takes off the 1/5-1/3 that the quantity of slag is total quantity of slag, and molten steel is directly transported to VD by headroom >=800mm Stove is smelted；Vacuum processing time is 25-30min, and argon flow amount control is in 10-70NL/min, 20 seconds thermometrics of stirring, vacuum processing 27min takes finished product sample to analyze and a certain amount of coverture is added in molten steel face after breaking sky, and adjusting argon gas after broken sky carries out soft blow Argon, argon flow amount control is in liquid steel level fine motion during soft blow argon, and soft blow argon time control is in 15-40min；
4) P≤0.008%, Ti≤0.002%, S≤0.002% in gained molten steel are smelted, product quality meets middle and high end User demand.
Traditional handicraft is compared with the application leading indicator：
Leading indicator Traditional handicraft Use this method
Electric furnace smelting average period 55min 45min
Electric furnace lime consumption 55kg/t steel 40kg/t steel
Electric furnace smelting power consumption 115kwh/t steel 80kwh/t steel
Embodiment 2
Wind power flange S355NL is smelted using this method, the described method comprises the following steps：
1) electric furnace smelting：Total 125 tons of charge weight, 87 tons of molten iron, 38 tons of steel scrap (tank side iron, the pig iron (remelted pig iron), ironcasting Etc. phosphorous 9 tons high of aniseed addition, roll useless 24 tons, 5 tons of cropping), accomplish in blending process it is lower it is fine and close, it is upper it is loose, intermediate it is high, Surrounding is low, stove gate is without aniseed；Electric furnace uses steel operation more than recrement, and Yu Gang, quantity of slag control are at 31 tons or so；In electric furnace before smelting Furnace bottom adds in 1.5 tons of lime, 0.875 ton of dolomite, and when power transmission 3-5 minute adds in 1.5 tons of lime, and lime angle is added in smelting process It spends for+3 degree, normal oxygen blast and reduction splash loss when ensureing to add lime；Clinker, particularly fritting state are not released too early Clinker, power transmission 8min or so, power failure oxygen blast increases (FeO) in slag, when molten steel temperature reaches 1530 DEG C -1550 DEG C, increases Foamed slag height carries out automatic flow slag operation, and rolls dynamic furnace body to slagging tap in due course, and lime 625kg is suitably added after flowing slag；Steel Liquid temperature reaches 1560 DEG C -1580 DEG C, carries out changing slag operation, releases initial stage slag, then add in lime in batches, every batch of addition For 750kg, high alkalinity clinker, basicity of slag control to 2.0-3.0 are made；Outlet temperature is to be not more than 1650 DEG C for principle；Using Eccentric furnace bottom slag free tapping technology, time >=140 second of tapping, once there is slag in tapping process, it is necessary to remove oxidation in time Slag is made refining slag, then is refined again；Electric furnace carries out alloying using low titanium alloy；Add in electric furnace steel tapping 1/3 with steel stream Enter active lime 1000kg, accelerating agent 375kg, steel-core-aluminium 375kg, dolomite 250kg；Electric furnace accesses bottom blowing during putting steel Argon, tapping argon gas early period are 800NL × 2/min；
2) LF refining：LF refining furnace is transported to after tapping, molten steel enters LF power transmission slag making, using arc-covering slag operation, soft Argon controls, and adds 475 ㎏ of lime, 400 ㎏ of slag adjusting agent；LF uses high alkalinity clinker, and Composition Control is：CaO=45%- 55%th, Si02=8%-10%, A1203=25%-35%, MgO=5%-10%；LF stoves deoxidation mode is using single collection early period In quick aluminium deoxidation, add low titanium silicon carbide in batches and carbon dust diffusive deoxidation is combined, it is the white slag retention time >=15min, low For silicon titanium-carbide feed postition repeatedly to add, one time addition is 3-5 ㎏, and whole bag is not allowed to add in；LF using low titanium alloy into Row alloying；LF refining carries out calcification processing when tapping；
3) VD vacuum processings：LF refining furnace decides whether to carry out taking off slag operation, ladle after smelting according to ladle space Headroom<800mm carries out taking off slag operation, takes off the 1/5-1/3 that the quantity of slag is total quantity of slag, and molten steel is directly transported to VD by headroom >=800mm Stove is smelted；Vacuum processing time is 25-30min, and argon flow amount control is in 10-70NL/min, 20 seconds thermometrics of stirring, vacuum processing 27min takes finished product sample to analyze and a certain amount of coverture is added in molten steel face after breaking sky, and adjusting argon gas after broken sky carries out soft blow Argon, argon flow amount control is in liquid steel level fine motion during soft blow argon, and soft blow argon time control is in 15-40min；
4) P≤0.008%, Ti≤0.002%, S≤0.002% in gained molten steel are smelted, product quality meets middle and high end User demand.
Traditional handicraft is compared with the application leading indicator：
Leading indicator Traditional handicraft Use this method
Electric furnace smelting average period 55min 44min
Electric furnace lime consumption 55kg/t steel 43kg/t steel
Electric furnace smelting power consumption 115kwh/t steel 82kwh/t steel
Certainly, the present invention without deviating from the spirit and substance of the present invention, can also be familiar with there are many embodiment Those skilled in the art can disclosure according to the present invention make various corresponding changes and modification, but these it is corresponding change and Deformation should all belong to the protection domain of appended claims of the invention.

Claims (3)

1. a kind of smelting process of low-phosphorous-low titanium-low-sulfur steel, the smelting process include the following steps：
1) electric furnace smelting：Loading system uses 60-70% molten iron+30-40% steel scraps, controls phosphorous high aniseed addition little In the 8% of total charge weight；Electric furnace uses steel operation more than recrement, and Yu Gang, the quantity of slag control the 15-25% in tap；Smelt before EAF bottom adds in lime 10-12 ㎏/t steel, dolomite 6-7 ㎏/t steel；Lime 10-12 ㎏/t steel is added in during power transmission 3-5 minutes, In smelting process plus lime angle is+3 degree；When molten steel temperature reaches 1530 DEG C -1550 DEG C, increase foamed slag height and carry out certainly Dynamic flow slag operation, and dynamic furnace body is rolled to slagging tap, add lime 4-5 ㎏/t steel after flowing slag；Molten steel temperature reaches 1560 DEG C -1580 DEG C, it carries out changing slag operation, releases initial stage slag, then add in lime in batches, addition is 4-6 ㎏/t steel, makes high alkalinity clinker, stove Basicity of slag is controlled to 2.0-3.0；Outlet temperature≤1650 DEG C；Using eccentric furnace bottom slag free tapping technology, time >=140 of tapping Second；Electric furnace carries out alloying using low titanium alloy；Active lime 6-8kg/t steel is added in steel stream, promote in electric furnace steel tapping 1/3 Agent 2.0-3kg/t steel, steel-core-aluminium 2.0-3kg/t steel, dolomite 1.0-2.0kg/t steel；Electric furnace accesses BOTTOM ARGON BLOWING during putting steel, Argon gas early period of tapping is 500-800NL × 2/min；
2) LF refining：LF refining furnace is transported to after tapping, molten steel enters LF power transmission slag making, using arc-covering slag operation, soft blow argon Control adds slag charge as 4-7kg/t steel, and slag charge overall control target is 13-17kg/t steel；LF uses high alkalinity clinker, ingredient It controls and is：CaO=45%-55%, SiO2=8%-10%, A12O3=25%-35%, MgO=5%-10%；LF stove deoxidations Mode concentrates quick aluminium deoxidation using single early period, add low titanium silicon carbide in batches and carbon dust diffusive deoxidation is combined, white slag Retention time >=15min, for low titanium silicon carbide feed postition repeatedly to add, an addition is 3-5 ㎏；LF uses low titanium alloy Carry out alloying；LF refining carries out calcification processing when tapping；
3) VD vacuum processings：LF refining furnace decides whether to carry out taking off slag operation, Steel ladle clearance after smelting according to ladle space< 800mm carries out taking off slag operation, takes off the 1/5-1/3 that the quantity of slag is total quantity of slag, and molten steel is directly transported to VD stove smeltings by headroom >=800mm Refining；Vacuum processing time is 25-30min, and argon flow amount control takes finished product sample to analyze and in steel after 10-70NL/min, broken sky Liquid level adds in coverture, break it is empty after adjustment argon gas carry out soft blow argon, argon flow amount control is in liquid steel level fine motion during soft blow argon Can, soft blow argon time control is in 15-40min；
4) P≤0.008%, Ti≤0.002%, S≤0.002% in gained molten steel are smelted.
2. a kind of smelting process of low-phosphorous-low titanium-low-sulfur steel as described in claim 1, it is characterised in that：Phosphorous high aniseed Including tank side iron, the pig iron or remelted pig iron, ironcasting.
3. a kind of smelting process of low-phosphorous-low titanium-low-sulfur steel as described in claim 1, it is characterised in that：In step 2), institute It states slag charge and includes lime, slag adjusting agent.
CN201610480900.XA 2016-06-24 2016-06-24 A kind of smelting process of low-phosphorous-low titanium-low-sulfur steel Active CN106086298B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610480900.XA CN106086298B (en) 2016-06-24 2016-06-24 A kind of smelting process of low-phosphorous-low titanium-low-sulfur steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610480900.XA CN106086298B (en) 2016-06-24 2016-06-24 A kind of smelting process of low-phosphorous-low titanium-low-sulfur steel

Publications (2)

Publication Number Publication Date
CN106086298A CN106086298A (en) 2016-11-09
CN106086298B true CN106086298B (en) 2018-07-03

Family

ID=57253316

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610480900.XA Active CN106086298B (en) 2016-06-24 2016-06-24 A kind of smelting process of low-phosphorous-low titanium-low-sulfur steel

Country Status (1)

Country Link
CN (1) CN106086298B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108715912B (en) * 2018-06-07 2020-09-22 舞阳钢铁有限责任公司 Method for smelting low-nitrogen steel by electric furnace
CN108977678B (en) * 2018-08-09 2019-06-28 徐州宏阳新材料科技有限公司 A kind of low-Ti high-C ferrochronium and its smelting process
CN109252438A (en) * 2018-10-10 2019-01-22 中建八局第三建设有限公司 A kind of technique using refining furnace white slag stabilization processes cement stabilization layer
CN109628694A (en) * 2018-12-29 2019-04-16 西峡县耀辉冶金材料有限公司 A kind of ultralow nitrogen ultralow titanium molten steel refining agent and preparation method
CN109628820A (en) * 2019-01-10 2019-04-16 石钢京诚装备技术有限公司 A kind of low-phosphorous, low-sulfur sulfur resistive pipe line steel continuous cast round billets production method
CN111663019A (en) * 2020-05-18 2020-09-15 包头钢铁（集团）有限责任公司 Special refining slag for producing bearing steel by medium-sized converter and bearing steel production process thereof
CN114657303B (en) * 2022-05-24 2022-08-16 山西建龙实业有限公司 Method for synergistically utilizing high-iron red mud and scrap steel
CN115786634A (en) * 2022-12-06 2023-03-14 舞阳钢铁有限责任公司 Method for improving welding performance of nickel-containing low-temperature steel

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102433504A (en) * 2011-12-09 2012-05-02 莱芜钢铁集团有限公司 Steel for medium/heavy duty vehicle gear shaft blank in cross wedge rolling process and preparation method thereof
CN103695785A (en) * 2013-12-11 2014-04-02 莱芜钢铁集团有限公司 Steel for low-temperature and high-pressure pipeline connector and manufacturing method of continuous casting round billet thereof
CN104087719A (en) * 2014-07-04 2014-10-08 常州东大中天钢铁研究院有限公司 Smelting process of high-carbon bearing steel
CN104878297A (en) * 2015-05-19 2015-09-02 本钢板材股份有限公司 Production method of low-titanium bearing steel GCr15
CN105543644A (en) * 2015-12-03 2016-05-04 抚顺特殊钢股份有限公司 Novel manufacturing technology of super-large size gear steel SCM822H for industrial speed reducer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102433504A (en) * 2011-12-09 2012-05-02 莱芜钢铁集团有限公司 Steel for medium/heavy duty vehicle gear shaft blank in cross wedge rolling process and preparation method thereof
CN103695785A (en) * 2013-12-11 2014-04-02 莱芜钢铁集团有限公司 Steel for low-temperature and high-pressure pipeline connector and manufacturing method of continuous casting round billet thereof
CN104087719A (en) * 2014-07-04 2014-10-08 常州东大中天钢铁研究院有限公司 Smelting process of high-carbon bearing steel
CN104878297A (en) * 2015-05-19 2015-09-02 本钢板材股份有限公司 Production method of low-titanium bearing steel GCr15
CN105543644A (en) * 2015-12-03 2016-05-04 抚顺特殊钢股份有限公司 Novel manufacturing technology of super-large size gear steel SCM822H for industrial speed reducer

Also Published As

Publication number Publication date
CN106086298A (en) 2016-11-09

Similar Documents

Publication Publication Date Title
CN106086298B (en) A kind of smelting process of low-phosphorous-low titanium-low-sulfur steel
CN110129517B (en) Method for smelting high-silicon iron water based on converter duplex method to improve dephosphorization rate of desiliconization furnace
CN105525055B (en) A kind of control method of converter less-slag melting carbon period splash
CN103540707B (en) Entirely stay slag-single slag process converter smelting method
CN109897933A (en) A kind of efficient smelting process of the low-phosphorous clean steel of converter producing
CN110453032B (en) Method for smelting ultralow manganese steel by using high-manganese molten iron
CN104561433B (en) A kind of converter smelting method of medium high carbon ultra-low phosphoretic steel water
CN101962700A (en) Method for smelting low-phosphorous molten steel by utilizing semisteel
CN112126737B (en) Production method of low-sulfur alloy molten steel
CN104611502A (en) Aluminum-containing and sulfur-containing series gear steel smelting process
CN109022664A (en) A method of Ti-IF steel is smelted using hot metal containing V-Ti
CN105861775A (en) Smelting process for ultra-low phosphorus steel with high nickel content
CN102943145A (en) Converter smelting method of ultra-low phosphorus steel
CN110117689A (en) A method of based on high-silicon molten iron converter double slag process low phosphorus steel by smelting
CN105132611B (en) Method for producing ultra-low phosphorous steel through single slag of converter
CN112126736A (en) Method for shortening oxygen supply time of variety steel converter
CN103571999A (en) Method for smelting nitrogen-controlling martensite stainless steel through total molten iron
CN102559984B (en) Method for producing high carbon steel through double-slag high drawing carbon tapping
CN107868858A (en) A kind of production method of low S and low P steel
CN104531940A (en) Converter final slag thickening method
CN106566908A (en) Production method of converter smelted low-sulphur steel
CN109022670A (en) A kind of converter steel making method producing ultra-low phosphoretic steel
CN109280734B (en) Smelting method of medium and high alloy ultra-low phosphorus steel
CN101864508B (en) Steel making method of convertor with small slag quantity
CN109161633A (en) Manganese high phosphorus hot metal proposes the preparation method that carbon protects manganese in a kind of converter smelting

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant