CN106917046A - A kind of method that utilization vanadium-bearing hot metal produces Steel for cold heading processing - Google Patents
A kind of method that utilization vanadium-bearing hot metal produces Steel for cold heading processing Download PDFInfo
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- CN106917046A CN106917046A CN201710139847.1A CN201710139847A CN106917046A CN 106917046 A CN106917046 A CN 106917046A CN 201710139847 A CN201710139847 A CN 201710139847A CN 106917046 A CN106917046 A CN 106917046A
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- cold heading
- vanadium
- hot metal
- heading processing
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 176
- 239000010959 steel Substances 0.000 title claims abstract description 176
- 238000000034 method Methods 0.000 title claims abstract description 88
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 72
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical group [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000012545 processing Methods 0.000 title claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 29
- 239000002184 metal Substances 0.000 title claims abstract description 29
- 238000007670 refining Methods 0.000 claims abstract description 34
- 239000002893 slag Substances 0.000 claims abstract description 30
- 238000003723 Smelting Methods 0.000 claims abstract description 27
- 239000000203 mixture Substances 0.000 claims abstract description 23
- 238000005096 rolling process Methods 0.000 claims abstract description 23
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 22
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- 239000000956 alloy Substances 0.000 claims abstract description 14
- 238000009749 continuous casting Methods 0.000 claims abstract description 14
- 239000000126 substance Substances 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 36
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 36
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 238000000605 extraction Methods 0.000 claims description 21
- 239000004411 aluminium Substances 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 18
- 229910052786 argon Inorganic materials 0.000 claims description 18
- 238000010079 rubber tapping Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000007664 blowing Methods 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 238000012986 modification Methods 0.000 claims description 11
- 230000004048 modification Effects 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 9
- 239000005997 Calcium carbide Substances 0.000 claims description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 9
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 9
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 9
- WNQQFQRHFNVNSP-UHFFFAOYSA-N [Ca].[Fe] Chemical compound [Ca].[Fe] WNQQFQRHFNVNSP-UHFFFAOYSA-N 0.000 claims description 9
- 229910052791 calcium Inorganic materials 0.000 claims description 9
- 239000011575 calcium Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 9
- 239000004571 lime Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 238000009987 spinning Methods 0.000 claims description 9
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 claims description 9
- 241001417490 Sillaginidae Species 0.000 claims description 7
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 abstract description 13
- 238000010273 cold forging Methods 0.000 abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 230000032683 aging Effects 0.000 abstract description 5
- 238000001556 precipitation Methods 0.000 abstract description 4
- 238000004458 analytical method Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 6
- 238000009628 steelmaking Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a kind of method that utilization vanadium-bearing hot metal produces Steel for cold heading processing, the Steel for cold heading processing chemical composition and weight/mass percentage composition are：C：0.16 0.20%, Si≤0.05%, Mn：0.60 0.85%, V：0.010 0.015%, Als：0.025 0.045%, P≤0.025%, S≤0.015%, remaining is Fe and inevitable impurity, and production method includes converter smelting, refining, continuous casting, rolling process.The V of present invention control converter smelting endpoint, C, Mn content and free N content in chemical analysis are reduced by giving full play to the precipitation strength effect of V and C, N, carbon equivalent and aging phenomenon are reduced, excellent cold-forging steel drawing property and cold heading performance is obtained, while reducing cost of alloy；The useless vanadium that will should be converted into vessel slag is directly changed into a kind of useful alloy element of Steel for cold heading processing, improves vanadium utilization ratio.
Description
Technical field
The invention belongs to metallurgical technology field, and in particular to a kind of method that utilization vanadium-bearing hot metal produces Steel for cold heading processing.
Background technology
Cold-forging steel is commonly used to cold-heading molding and manufactures various mechanical standard parts and fastener, and product mainly includes screw, pin
Nail, nut etc..Comprising multiple working procedures such as drawing, quenching, annealing, cold-heading, carburizings in its process, each operation has strictly
Professional standard, therefore, the mother metal product needed before processing has qualified mechanical property and good internal organizational structure.This hair
Bright use vanadium-bearing hot metal vanadium extraction by converter blowing, the half steel after vanadium extraction carries out converter smelting, controls the V content of converter smelting endpoint to exist
0.010-0.015%, C, Mn content and free N in chemical analysis are reduced by giving full play to the precipitation strength effect of V and C, N
Content, reduces carbon equivalent and aging phenomenon, obtains excellent cold-forging steel drawing property and cold heading performance, while reducing conjunction
Golden cost；The V content of converter smelting endpoint is significantly higher than content of vanadium more than conventional duplex technique simultaneously（≤ 0.007%, averagely
0.003%）, the steel-making cycle is shortened, iron and steel stock scaling loss is reduced, save steel-making cost；Additionally, converter should be converted into
The useless vanadium of slag is directly changed into a kind of useful alloy element of Steel for cold heading processing, improves vanadium utilization ratio.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of method that utilization vanadium-bearing hot metal produces Steel for cold heading processing, the present invention
Using vanadium-bearing hot metal vanadium extraction by converter blowing, the half steel after vanadium extraction carries out converter smelting, controls the V content of converter smelting endpoint, reduces
Carbon equivalent and aging phenomenon, obtain excellent cold-forging steel drawing property and cold heading performance.
In order to solve the above technical problems, the present invention provides a kind of method that utilization vanadium-bearing hot metal produces Steel for cold heading processing, it is described
Steel for cold heading processing chemical composition and weight/mass percentage composition are：C：0.16-0.20%, Si≤0.05%, Mn：0.60-0.85%, V：
0.010-0.015%, Als：0.025-0.045%, P≤0.025%, S≤0.015%, remaining is Fe and inevitable impurity.
Production method of the present invention includes converter smelting, refining, continuous casting, rolling process.
Converter smelting operation of the present invention, vanadium-bearing hot metal vanadium extraction by converter blowing is smelted after vanadium extraction to half steel, during plus
Ferromanganese alloy, forbids after-blow, it is to avoid V declines to a great extent and molten steel nitrogen pick-up in steel, control terminal C：0.06-0.12%, P≤
0.020%, S≤0.015%, V：0.010-0.015%.
Converter smelting operation of the present invention, tapping process whole process Argon and plus 1.5-2.5kg/ ton steel of platform aluminium carry out depth take off
Oxygen, lifts by crane 1620-1650 DEG C of temperature.
Refining procedure of the present invention, carries out white slag operation, and once heating ensures white slag, and keeps white slag in 10-
15min。
Refining procedure of the present invention, adds 600-800kg/ tons of steel of lime, modification agent 200-300kg/ tons of steel, aluminium powder
60-80kg/ tons of steel, calcium carbide 60-80kg/ tons of steel, it is ensured that submerged arc effect, it is to avoid refining process heats up and inhales nitrogen.
Refining procedure of the present invention, feeding 5-7m/ tons of steel calcium iron wire carries out Calcium treatment, argon gas soft blow 15-20min.
Continuous casting working procedure of the present invention, the big-and-middle bag whole process protection of continuous casting, M-EMS, 20-30 DEG C of the degree of superheat is drawn
Fast 1.6-1.8m/min, specific water 0.7-0.8 L/g.
Rolling process of the present invention, steel billet is rolled by Ф 6.5mm size discs circle, steel billet tapping temperature 1030 ± 30
DEG C, high-pressure water descaling comes into operation, it is ensured that billet surface range estimation is clean without iron sheet.
Rolling process of the present invention, 1010 ± 30 DEG C of start rolling temperature, 930 ± 20 DEG C of entry temperature at finishing, spinning outlet
900 ± 20 DEG C of temperature；Roller-way first section speed 0.18m/s, all collects volume in collection reel, it is ensured that collection volume quality.
Steel for cold heading processing Design of Chemical Composition thinking of the present invention is as follows：
C：C has considerable influence to the tensile strength and cold-heading processing characteristics of steel.C content increases, and the hardness and intensity of steel are also therewith
Improve, while the plasticity and toughness of steel can be reduced, when cold-forging steel is processed, the work-hardening capacity of cold-forging steel can be increased, to drawing
Pull out and cold-heading has a negative impact.C content control range designed by the present invention is 0.16-0.20%, and when smelting, composition is inclined
Lower limit is controlled.
Si：Si can strengthen the tensile strength of steel, reduce the cold plasticity and modification performance of steel.Meanwhile, Si was smelting
Cheng Zhong, can form non-metallic inclusion, and the heat treatment follow-up to cold-forging steel has a negative impact.Therefore, should reduce as far as possible
Si contents.Si contents designed by the present invention are preferably controlled to Si≤0.05%.
Mn：Mn can be added as the deoxidier in steel.Mn generates MnS with the S reactions in steel, can be effectively improved the easy of steel
Cutting ability.For cold-forging steel, Mn can strengthen its tensile strength and yield strength, but a certain degree of can reduce the cold of steel
Flow type ability, and have the unfavorable tendency for increasing grain coarsening and temper brittleness.Mn contents designed by the present invention are preferably controlled
It is 0.60-0.85%, when smelting, the inclined lower limit of composition is controlled.
V：V is combined in steel with C, N, it is possible to reduce C, Mn content reduction carbon equivalent, by solution strengthening and precipitation strength
Effect, crystal grain thinning, it is possible to increase the intensity and toughness of steel, and the quenching degree of steel can be improved, increase steel belt roof bolt stability, together
When combined with N and reduced the aging phenomenon of N, Beneficial Effect is produced to the processing of the postorder of cold-forging steel.
Als：Al can to a certain extent refine the tissue grain size of steel and reduce the embrittlement susceptibility of steel.Due in smelting
During refining, Al is used as conventional deoxidier, and deoxidizing capacity is strong, and part Al can be with the reaction generation of the oxygen in steel Al2O3, part list
Matter Al forms Als in being dissolved in steel.Therefore, in order to ensure the degree of purity and continuous irrigatation castability of molten steel, it is desirable in refining outbound molten steel
Als/Al>0.9, the control of Als contents is in 0.025-0.045% in the present invention.
P、S：P, S are considered as generally harmful element in steel, and the cleanliness factor to molten steel has a negative impact, and are reduced
The plasticity and toughness of steel, and the increase of P, S content can influence increase temper brittleness and cold short sensitiveness.Therefore, should be as far as possible
P, S content are reduced, by optimization, P, S control range are：P≤0.025%, S≤0.015%.
Steel for cold heading processing detection method of the present invention refers to JIS G3507-1.
It is using the beneficial effect produced by above-mentioned technical proposal：1st, the present invention uses vanadium-bearing hot metal vanadium extraction by converter blowing, carries
Half steel after vanadium carries out converter smelting, controls the V content of converter smelting endpoint in 0.010-0.015%, by give full play to V with
The precipitation strength effect of C, N reduces C, Mn content and free N content in chemical analysis, reduces carbon equivalent and aging phenomenon,
Excellent cold-forging steel drawing property and cold heading performance is obtained, while reducing cost of alloy；The present invention is separated out strong using V element
The characteristic of change, improves cold-forging steel interior tissue, improves the properties in cold-heading process.2nd, the V of converter smelting endpoint contains
Amount is significantly higher than content of vanadium more than conventional duplex technique（≤ 0.007%, average 0.003%）, the steel-making cycle is shortened, reduce steel
Material scaling loss, has saved steel-making cost；3rd, the useless vanadium that will should be converted into vessel slag of the invention is directly changed into the one of Steel for cold heading processing
Useful alloy element is planted, vanadium utilization ratio is improve, while shortening the steel-making cycle, iron and steel stock scaling loss is reduced.
Specific embodiment
With reference to specific embodiment, the present invention is further detailed explanation.
The Steel for cold heading processing of present invention production, production method comprises the following steps：
1. converter smelting operation：Vanadium-bearing hot metal vanadium extraction by converter blowing, smelts after vanadium extraction to half steel, and process adds ferromanganese alloy
Change, forbid after-blow, it is to avoid V declines to a great extent and molten steel nitrogen pick-up in steel, control terminal C：0.06-0.12%, P≤0.020%, S≤
0.015%, V：0.010-0.015%, tapping process whole process Argon and plus 1.5-2.5kg/ ton steel of platform aluminium carry out deep deoxidation, lift by crane warm
1620-1650 DEG C of degree.
2. refining procedure：Refining carries out white slag operation, and once heating ensures white slag, and keeps white slag in 10-15min, plus
Enter lime 600-800kg/ tons of steel, modification agent 200-300kg/ tons of steel, aluminium powder 60-80kg/ tons of steel, calcium carbide 60-80kg/ tons of steel,
Ensure submerged arc effect, it is to avoid refining process heats up and inhales nitrogen, feeding 5-7m/ tons of steel calcium iron wire carries out Calcium treatment, argon gas soft blow 15-
20min。
3. continuous casting working procedure：Big-and-middle bag whole process protection, M-EMS, 20-30 DEG C of the degree of superheat, pulling rate 1.6-1.8m/
Min, specific water 0.7-0.8L/g.
4. rolling process：Steel billet is rolled by Ф 6.5mm size discs circle, 1030 ± 30 DEG C of steel billet tapping temperature, high pressure
Water de-scaling comes into operation, it is ensured that billet surface range estimation is clean without iron sheet.1010 ± 30 DEG C of start rolling temperature, entry temperature at finishing 930 ± 20
DEG C, 900 ± 20 DEG C of outlet temperature of spinning；The m/s of roller-way first section speed 0.18, all collects volume in collection reel, it is ensured that collection volume matter
Amount.
Embodiment 1
The Steel for cold heading processing of the present embodiment production, production method comprises the following steps：
1. converter smelting operation：Vanadium-bearing hot metal vanadium extraction by converter blowing, smelts after vanadium extraction to half steel, and process adds ferromanganese alloy
Change, forbid after-blow, it is to avoid V declines to a great extent and molten steel nitrogen pick-up in steel, control terminal C：0.065%, P：0.018%, S：0.014%, V：
0.011%, tapping process whole process Argon and plus 1.5kg/ tons of steel of platform aluminium carry out deep deoxidation, 1630 DEG C of temperature of lifting.
2. refining procedure：Refining carries out white slag operation, and once heating ensures white slag, and keeps white slag in 12min, adds
Lime 650kg/ tons of steel, modification agent 220kg/ tons of steel, aluminium powder 65kg/ tons of steel, calcium carbide 65kg/ tons of steel, it is ensured that submerged arc effect, it is to avoid
Refining process heats up and inhales nitrogen, and feeding 5m/ tons of steel calcium iron wire carries out Calcium treatment, argon gas soft blow 15min.
3. continuous casting working procedure：Big-and-middle bag whole process protection, M-EMS, 22 DEG C of the degree of superheat, pulling rate 1.65m/min, than
Water 0.75L/g.
4. rolling process：Steel billet is rolled by Ф 6.5mm size discs circle, 1000 DEG C of steel billet tapping temperature, and water under high pressure is removed
Squama comes into operation, it is ensured that billet surface range estimation is clean without iron sheet.980 DEG C of start rolling temperature, 910 DEG C of entry temperature at finishing, spinning outlet temperature
880 DEG C of degree；The m/s of roller-way first section speed 0.18, all collects volume in collection reel, it is ensured that collection volume quality.
This Steel for cold heading processing chemical composition and weight/mass percentage composition are shown in Table 1, and testing result is shown in Table 2.
Embodiment 2
The Steel for cold heading processing of the present embodiment production, production method comprises the following steps：
1. converter smelting operation：Vanadium-bearing hot metal vanadium extraction by converter blowing, smelts after vanadium extraction to half steel, and process adds ferromanganese alloy
Change, forbid after-blow, it is to avoid V declines to a great extent and molten steel nitrogen pick-up in steel, control terminal C：0.072%, P：0.016%, S：0.013%, V：
0.012%, tapping process whole process Argon and plus 1.6kg/ tons of steel of platform aluminium deep deoxidation carry out, lifting 1635 DEG C of temperature.
2. refining procedure：Refining carries out white slag operation, and once heating ensures white slag, and keeps white slag in 14min, adds
Lime 660kg/ tons of steel, modification agent 235kg/ tons of steel, aluminium powder 72kg/ tons of steel, calcium carbide 70kg/ tons of steel, it is ensured that submerged arc effect, it is to avoid
Refining process heats up and inhales nitrogen, and feeding 5.2m/ tons of steel calcium iron wire carries out Calcium treatment, argon gas soft blow 17min.
3. continuous casting working procedure：Big-and-middle bag whole process protection, M-EMS, 25 DEG C of the degree of superheat, pulling rate 1.72m/min, than
Water 0.78L/g.
4. rolling process：Steel billet is rolled by Ф 6.5mm size discs circle, 1020 DEG C of steel billet tapping temperature, and water under high pressure is removed
Squama comes into operation, it is ensured that billet surface range estimation is clean without iron sheet.990 DEG C of start rolling temperature, 920 DEG C of entry temperature at finishing, spinning outlet temperature
890 DEG C of degree；The m/s of roller-way first section speed 0.18, all collects volume in collection reel, it is ensured that collection volume quality.
This Steel for cold heading processing chemical composition and weight/mass percentage composition are shown in Table 1, and testing result is shown in Table 2.
Embodiment 3
The Steel for cold heading processing of the present embodiment production, production method comprises the following steps：
1. converter smelting operation：Vanadium-bearing hot metal vanadium extraction by converter blowing, smelts after vanadium extraction to half steel, and process adds ferromanganese alloy
Change, forbid after-blow, it is to avoid V declines to a great extent and molten steel nitrogen pick-up in steel, control terminal C：0.083%, P：0.017%, S：0.013%, V：
0.014%, tapping process whole process Argon and plus 1.9kg/ tons of steel of platform aluminium carry out deep deoxidation, 1650 DEG C of temperature of lifting.
2. refining procedure：Refining carries out white slag operation, and once heating ensures white slag, and keeps white slag in 10min, adds
Lime 680kg/ tons of steel, modification agent 242kg/ tons of steel, aluminium powder 78kg/ tons of steel, calcium carbide 75kg/ tons of steel, it is ensured that submerged arc effect, it is to avoid
Refining process heats up and inhales nitrogen, and feeding 5.5m/ tons of steel calcium iron wire carries out Calcium treatment, argon gas soft blow 18min.
3. continuous casting working procedure：Big-and-middle bag whole process protection, M-EMS, 25 DEG C of the degree of superheat, pulling rate 1.75m/min, than
Water 0.75L/g.
4. rolling process：Steel billet is rolled by Ф 6.5mm size discs circle, 1040 DEG C of steel billet tapping temperature, and water under high pressure is removed
Squama comes into operation, it is ensured that billet surface range estimation is clean without iron sheet.1020 DEG C of start rolling temperature, 930 DEG C of entry temperature at finishing, spinning outlet temperature
910 DEG C of degree；The m/s of roller-way first section speed 0.18, all collects volume in collection reel, it is ensured that collection volume quality.
This Steel for cold heading processing chemical composition and weight/mass percentage composition are shown in Table 1, and testing result is shown in Table 2.
Embodiment 4
The Steel for cold heading processing of the present embodiment production, production method comprises the following steps：
1. converter smelting operation：Vanadium-bearing hot metal vanadium extraction by converter blowing, smelts after vanadium extraction to half steel, and process adds ferromanganese alloy
Change, forbid after-blow, it is to avoid V declines to a great extent and molten steel nitrogen pick-up in steel, control terminal C：0.088%, P：0.018%, S：0.015%, V：
0.015%, tapping process whole process Argon and plus 2.2kg/ tons of steel of platform aluminium carry out deep deoxidation, 1620 DEG C of temperature of lifting.
2. refining procedure：Refining carries out white slag operation, and once heating ensures white slag, and keeps white slag in 13min, adds
Lime 660kg/ tons of steel, modification agent 265kg/ tons of steel, aluminium powder 80kg/ tons of steel, calcium carbide 78kg/ tons of steel, it is ensured that submerged arc effect, it is to avoid
Refining process heats up and inhales nitrogen, and feeding 5.8m/ tons of steel m calcium iron wire carries out Calcium treatment, argon gas soft blow 20min.
3. continuous casting working procedure：Big-and-middle bag whole process protection, M-EMS, 30 DEG C of the degree of superheat, pulling rate 1.78m/min, than
Water 0.80L/g.
4. rolling process：Steel billet is rolled by Ф 6.5mm size discs circle, 1060 DEG C of steel billet tapping temperature, and water under high pressure is removed
Squama comes into operation, it is ensured that billet surface range estimation is clean without iron sheet.1040 DEG C of start rolling temperature, 950 DEG C of entry temperature at finishing, spinning outlet temperature
920 DEG C of degree；The m/s of roller-way first section speed 0.18, all collects volume in collection reel, it is ensured that collection volume quality.
This Steel for cold heading processing chemical composition and weight/mass percentage composition are shown in Table 1, and testing result is shown in Table 2.
Embodiment 5
The Steel for cold heading processing of the present embodiment production, production method comprises the following steps：
1. converter smelting operation：Vanadium-bearing hot metal vanadium extraction by converter blowing, smelts after vanadium extraction to half steel, and process adds ferromanganese alloy
Change, forbid after-blow, it is to avoid V declines to a great extent and molten steel nitrogen pick-up in steel, control terminal C：0.12%, P：0.013%, S：0.012%, V：
0.013%, tapping process whole process Argon and plus 2.5kg/ tons of steel of platform aluminium carry out deep deoxidation, 1645 DEG C of temperature of lifting.
2. refining procedure：Refining carries out white slag operation, and once heating ensures white slag, and keeps white slag in 12min, adds
Lime 600kg/ tons of steel, modification agent 300kg/ tons of steel, aluminium powder 60kg/ tons of steel, calcium carbide 60kg/ tons of steel, it is ensured that submerged arc effect, it is to avoid
Refining process heats up and inhales nitrogen, and feeding 6.5m/ tons of steel calcium iron wire carries out Calcium treatment, argon gas soft blow 16min.
3. continuous casting working procedure：Big-and-middle bag whole process protection, M-EMS, 20 DEG C of the degree of superheat, pulling rate 1.6m/min, than
Water 0.70L/g.
4. rolling process：Steel billet is rolled by Ф 6.5mm size discs circle, 1010 DEG C of steel billet tapping temperature, and water under high pressure is removed
Squama comes into operation, it is ensured that billet surface range estimation is clean without iron sheet.990 DEG C of start rolling temperature, 935 DEG C of entry temperature at finishing, spinning outlet temperature
900 DEG C of degree；The m/s of roller-way first section speed 0.18, all collects volume in collection reel, it is ensured that collection volume quality.
This Steel for cold heading processing chemical composition and weight/mass percentage composition are shown in Table 1, and testing result is shown in Table 2.
Embodiment 6
The Steel for cold heading processing of the present embodiment production, production method comprises the following steps：
1. converter smelting operation：Converter vanadium-bearing hot metal is smelted, and process adds ferromanganese alloy, forbids after-blow, it is to avoid V in steel
Decline to a great extent and molten steel nitrogen pick-up, control terminal C：0.06%, P：0.020%, S：0.013%, V：0.010%, tapping process whole process is blown
Argon simultaneously adds 2.3kg/ ton steel of platform aluminium to carry out deep deoxidation, 1640 DEG C of temperature of lifting.
2. refining procedure：Refining carries out white slag operation, and once heating ensures white slag, and keeps white slag in 15min, adds
Lime 800kg/ tons of steel, modification agent 200kg/ tons of steel, aluminium powder 65kg/ tons of steel, calcium carbide 80kg/ tons of steel, it is ensured that submerged arc effect, it is to avoid
Refining process heats up and inhales nitrogen, and feeding 7m/ tons of steel calcium iron wire carries out Calcium treatment, argon gas soft blow 16min.
3. continuous casting working procedure：Big-and-middle bag whole process protection, M-EMS, 20 DEG C of the degree of superheat, pulling rate 1.8m/min, than
Water 0.72L/g.
4. rolling process：Steel billet is rolled by Ф 6.5mm size discs circle, 1050 DEG C of steel billet tapping temperature, and water under high pressure is removed
Squama comes into operation, it is ensured that billet surface range estimation is clean without iron sheet.1020 DEG C of start rolling temperature, 940 DEG C of entry temperature at finishing, spinning outlet temperature
910 DEG C of degree；Roller-way first section speed 0.18m/s, all collects volume in collection reel, it is ensured that collection volume quality.
This Steel for cold heading processing chemical composition and weight/mass percentage composition are shown in Table 1, and testing result is shown in Table 2.
The embodiment 1-6 Steel for cold heading processing chemical composition of table 1 and weight/mass percentage composition（%）
The embodiment 1-6 Steel for cold heading processing performance test results of table 2
Above example is only used to illustrative and not limiting technical scheme, although entering to the present invention with reference to above-described embodiment
Go detailed description, it will be understood by those within the art that：The present invention can still be modified or equally replaced
Change, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover will in right of the invention
Ask in the middle of scope.
Claims (10)
1. a kind of method that utilization vanadium-bearing hot metal produces Steel for cold heading processing, it is characterised in that the Steel for cold heading processing chemical composition and matter
Measuring percentage composition is：C：0.16-0.20%, Si≤0.05%, Mn：0.60-0.85%, V：0.010-0.015%, Als：0.025-
0.045%, P≤0.025%, S≤0.015%, remaining is Fe and inevitable impurity.
2. the method that a kind of utilization vanadium-bearing hot metal according to claim 1 produces Steel for cold heading processing, the production method includes
Converter smelting, refining, continuous casting, rolling process.
3. the method that a kind of utilization vanadium-bearing hot metal according to claim 1 produces Steel for cold heading processing, it is characterised in that described turn
Stove smelting procedure, vanadium-bearing hot metal vanadium extraction by converter blowing, smelts after vanadium extraction to half steel, during plus ferromanganese alloy, forbid
After-blow, it is to avoid V declines to a great extent and molten steel nitrogen pick-up in steel, control terminal C：0.06-0.12%, P≤0.020%, S≤0.015%, V：
0.010-0.015%。
4. the method that a kind of utilization vanadium-bearing hot metal according to claim 1 produces Steel for cold heading processing, it is characterised in that described turn
Stove smelting procedure, tapping process whole process Argon and plus 1.5-2.5kg/ tons of steel of platform aluminium carry out deep deoxidation, lift by crane temperature 1620-1650
℃。
5. the method that a kind of utilization vanadium-bearing hot metal according to claim 1-4 any one produces Steel for cold heading processing, its feature
It is that the refining procedure carries out white slag operation, once heating ensures white slag, and keeps white slag in 10-15min.
6. the method that a kind of utilization vanadium-bearing hot metal according to claim 1-4 any one produces Steel for cold heading processing, its feature
It is, the refining procedure to add 600-800kg/ tons of steel of lime, modification agent 200-300kg/ tons of steel, aluminium powder 60-80kg/ tons
Steel, calcium carbide 60-80kg/ tons of steel, it is ensured that submerged arc effect, it is to avoid refining process heats up and inhales nitrogen.
7. the method that a kind of utilization vanadium-bearing hot metal according to claim 1-4 any one produces Steel for cold heading processing, its feature
It is, the refining procedure to feed 5-7m/ tons of steel calcium iron wire to carry out Calcium treatment, argon gas soft blow 15-20min.
8. the method that a kind of utilization vanadium-bearing hot metal according to claim 1-4 any one produces Steel for cold heading processing, its feature
It is, the continuous casting working procedure, the big-and-middle bag whole process protection of continuous casting, M-EMS, 20-30 DEG C of the degree of superheat, pulling rate 1.6-
1.8m/min, specific water 0.7-0.8 L/g.
9. the method that a kind of utilization vanadium-bearing hot metal according to claim 1-4 any one produces Steel for cold heading processing, its feature
It is, the rolling process that steel billet is rolled by Ф 6.5mm size discs circle, 1030 ± 30 DEG C of steel billet tapping temperature, water under high pressure
De-scaling comes into operation, it is ensured that billet surface range estimation is clean without iron sheet.
10. the method that a kind of utilization vanadium-bearing hot metal according to claim 1-4 any one produces Steel for cold heading processing, its feature
It is, the rolling process, 1010 ± 30 DEG C of start rolling temperature, 930 ± 20 DEG C of entry temperature at finishing, spinning outlet temperature 900 ±
20℃；Roller-way first section speed 0.18m/s, all collects volume in collection reel, it is ensured that collection volume quality.
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Cited By (4)
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| CN109722589A (en) * | 2018-12-25 | 2019-05-07 | 河钢股份有限公司承德分公司 | A kind of production method of semisteel smelting weathering steel |
| CN109825704A (en) * | 2019-04-12 | 2019-05-31 | 攀钢集团攀枝花钢铁研究院有限公司 | The smelting process of vanadium iron |
| CN113215498A (en) * | 2020-11-12 | 2021-08-06 | 冷水江钢铁有限责任公司 | Production method of cold heading steel wire rod |
| CN113373384A (en) * | 2021-06-17 | 2021-09-10 | 承德建龙特殊钢有限公司 | Steel for petroleum casing coupling material and preparation method thereof |
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Cited By (4)
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| CN109722589A (en) * | 2018-12-25 | 2019-05-07 | 河钢股份有限公司承德分公司 | A kind of production method of semisteel smelting weathering steel |
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| CN113215498A (en) * | 2020-11-12 | 2021-08-06 | 冷水江钢铁有限责任公司 | Production method of cold heading steel wire rod |
| CN113373384A (en) * | 2021-06-17 | 2021-09-10 | 承德建龙特殊钢有限公司 | Steel for petroleum casing coupling material and preparation method thereof |
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