CN106917046B - A method of Steel for cold heading processing is produced using vanadium-bearing hot metal - Google Patents
A method of Steel for cold heading processing is produced using vanadium-bearing hot metal Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 172
- 239000010959 steel Substances 0.000 title claims abstract description 172
- 238000000034 method Methods 0.000 title claims abstract description 96
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 68
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical group [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 238000012545 processing Methods 0.000 title claims abstract description 39
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 24
- 239000002184 metal Substances 0.000 title claims abstract description 24
- 238000007670 refining Methods 0.000 claims abstract description 32
- 239000002893 slag Substances 0.000 claims abstract description 30
- 238000003723 Smelting Methods 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 25
- 238000005096 rolling process Methods 0.000 claims abstract description 23
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 21
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 18
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 17
- 238000009749 continuous casting Methods 0.000 claims abstract description 14
- 239000000126 substance Substances 0.000 claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 8
- 239000000956 alloy Substances 0.000 claims abstract description 8
- 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
- 238000010438 heat treatment Methods 0.000 claims description 19
- 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
- 230000000694 effects Effects 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 238000012986 modification Methods 0.000 claims description 10
- 230000004048 modification Effects 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
- 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
- 239000000203 mixture Substances 0.000 claims description 3
- 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 1
- 229910052799 carbon Inorganic materials 0.000 abstract description 18
- 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
- 238000009987 spinning Methods 0.000 description 7
- 241001417490 Sillaginidae Species 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000005275 alloying Methods 0.000 description 5
- 238000009628 steelmaking Methods 0.000 description 5
- 230000002411 adverse Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 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
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process 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
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 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
- 238000006467 substitution reaction 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
Abstract
The invention discloses a kind of methods using vanadium-bearing hot metal production Steel for cold heading processing, the Steel for cold heading processing chemical component and mass percentage are as follows: 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, precipitation strength by giving full play to V and C, N acts on to reduce C, Mn content and free N content in chemical analysis, carbon equivalent and aging phenomenon are reduced, obtains excellent cold-forging steel drawing property and cold heading performance, while reducing cost of alloy；A kind of useful alloy element that the useless vanadium that vessel slag should be converted into directly is become to Steel for cold heading processing, improves vanadium utilization efficiency.
Description
Technical field
The invention belongs to metallurgical technology fields, and in particular to a method of Steel for cold heading processing is produced using vanadium-bearing hot metal.
Background technique
Cold-forging steel manufactures various mechanical standard parts commonly used to cold-heading molding and fastener, product mainly include screw, pin
Nail, nut etc..Have strictly in its process comprising multiple working procedures, each process such as drawing, quenching, annealing, cold-heading, carburizings
Professional standard, therefore, the base material product before processing needs qualified mechanical property and good internal organizational structure.This hair
Bright to use vanadium-bearing hot metal vanadium extraction by converter blowing, the half steel after vanadium extraction carries out converter smelting, and the V content for controlling converter smelting endpoint exists
0.010-0.015%, the precipitation strength by giving full play to V and C, N act on to reduce C, Mn content and free N in chemical analysis
Content reduces carbon equivalent and aging phenomenon, obtains excellent cold-forging steel drawing property and cold heading performance, while reducing conjunction
Golden cost；Simultaneously the V content of converter smelting endpoint be significantly higher than content of vanadium more than conventional duplex technique (≤0.007%, it is average
0.003%) the steel-making period, is shortened, iron and steel stock scaling loss is reduced, has saved steel-making cost；In addition, converter should be converted into
The useless vanadium of slag directly becomes a kind of useful alloy element of Steel for cold heading processing, improves vanadium utilization efficiency.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method using vanadium-bearing hot metal production 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 using vanadium-bearing hot metal production Steel for cold heading processing, it is described
Steel for cold heading processing chemical component and mass percentage are as follows: 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 process of the present invention, vanadium-bearing hot metal vanadium extraction by converter blowing smelt half steel after vanadium extraction, in the process plus
Ferromanganese alloy forbids after-blow, and V is avoided in steel to decline to a great extent and molten steel nitrogen pick-up, controls terminal C:0.06-0.12%, and P≤
0.020%, S≤0.015%, V:0.010-0.015%.
Converter smelting process of the present invention, tapping process whole process Argon simultaneously add 1.5-2.5kg/ tons of steel of platform aluminium to carry out deep take off
Oxygen lifts by crane 1620-1650 DEG C of temperature.
Refining procedure of the present invention carries out white slag operation, and primary heating guarantees white slag, and keeps white slag in 10-
15min。
Lime 600-800kg/ tons of steel, 200-300kg/ tons of steel of modification agent, aluminium powder is added in refining procedure of the present invention
60-80kg/ tons of steel, 60-80kg/ tons of steel of calcium carbide guarantee submerged arc effect, and refining process heating is avoided to inhale nitrogen.
Refining procedure of the present invention feeds 5-7m/ tons of steel calcium iron wires and carries out Calcium treatment, argon gas soft blow 15-20min.
Continuous casting working procedure of the present invention, the big-and-middle packet whole process protection of continuous casting, M-EMS, are drawn by 20-30 DEG C of the degree of superheat
Fast 1.6-1.8m/min, specific water 0.7-0.8 L/g.
Rolling process of the present invention, steel billet are rolled by Ф 6.5mm size disc circle, steel billet tapping temperature 1030 ± 30
DEG C, high-pressure water descaling comes into operation, it is ensured that billet surface is estimated completely 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, guarantees collection volume quality.
Steel for cold heading processing Design of Chemical Composition thinking of the present invention is as follows:
C:C has larger impact to the tensile strength and cold-heading processing performance of steel.C content increases, the hardness and strength of steel
It increases accordingly, while the plasticity and toughness of steel can be reduced, in cold-forging steel processing, the work-hardening capacity of cold-forging steel can be increased,
Have an adverse effect to drawing and cold-heading.C content control range designed by the present invention is 0.16-0.20%, when smelting, at
Part limit on the lower side is controlled.
Si:Si can be such that the tensile strength of steel enhances, and reduce the cold plasticity and modification performance of steel.Meanwhile Si was smelting
Cheng Zhong will form non-metallic inclusion, and heat treatment subsequent to cold-forging steel has an adverse effect.Therefore, it should reduce as far as possible
Si content.Si content designed by the present invention is preferably controlled to Si≤0.05%.
Mn:Mn can be used as the addition of the deoxidier in steel.Mn is reacted with the S in steel generates MnS, can be effectively improved the easy of steel
Cutting ability.For cold-forging steel, Mn can enhance its tensile strength and yield strength, but a degree of can reduce the cold of steel
Flow type ability, and have the unfavorable tendency for increasing grain coarsening and temper brittleness.Mn content designed by the present invention preferably controls
For 0.60-0.85%, when smelting, the inclined lower limit of composition is controlled.
V:V is in steel in conjunction with C, N, it is possible to reduce C, Mn content reduce carbon equivalent, pass through solution strengthening and precipitation strength
Effect refines crystal grain, can be improved the intensity and toughness of steel, and can improve the harden ability of steel, increases steel belt roof bolt stability, together
When the aging phenomenon of N is reduced in conjunction with N, Beneficial Effect is generated to the processing of the postorder of cold-forging steel.
Als:Al can refine the tissue grain size of steel to a certain extent and reduce the embrittlement susceptibility of steel.Due in smelting
During refining, for Al as common deoxidier, deoxidizing capacity is strong, and part Al can be reacted with the oxygen in steel generates Al2O3, part list
Matter Al, which is dissolved in steel, forms Als.Therefore, in order to guarantee the degree of purity and continuous irrigatation castability of molten steel, it is desirable that refine in outbound molten steel
Als/Al > 0.9, the present invention in Als content control in 0.025-0.045%.
P, S:P, S are considered as harmful element in steel under normal circumstances, are had an adverse effect to the cleanliness of molten steel, are reduced
The plasticity and toughness of steel, and the increase of P, S content will affect and increase temper brittleness and cold short sensibility.It therefore, should be as far as possible
P, S content are reduced, optimization, P, S control range are as follows: P≤0.025%, S≤0.015% are passed through.
Steel for cold heading processing detection method of the present invention refers to JIS G3507-1.
The beneficial effects of adopting the technical scheme are that the 1, present invention uses vanadium-bearing hot metal vanadium extraction by converter blowing, mention
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
C, the precipitation strength of N acts on to reduce 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 are obtained, while reducing cost of alloy；The present invention is precipitated strong using V element
The characteristic of change improves cold-forging steel interior tissue, improves the properties in cold-heading process.2, the V of converter smelting endpoint contains
Amount be significantly higher than content of vanadium more than conventional duplex technique (≤0.007%, it is average 0.003%), shorten the steel-making period, reduce steel
Expect scaling loss, saves steel-making cost；3, the useless vanadium that should be converted into vessel slag is directly become the one of Steel for cold heading processing by the present invention
Kind useful alloy element, improves vanadium utilization efficiency, while shortening the steel-making period, reduces iron and steel stock scaling loss.
Specific embodiment
The present invention will be further described in detail below with reference to specific embodiments.
Steel for cold heading processing produced by the invention, production method include the following steps:
1. converter smelting process: vanadium-bearing hot metal vanadium extraction by converter blowing smelts half steel after vanadium extraction, and process adds low-carbon ferromanganese to close
Aurification forbids after-blow, and V is avoided in steel to decline to a great extent and molten steel nitrogen pick-up, controls terminal C:0.06-0.12%, and P≤0.020%, S≤
0.015%, V:0.010-0.015%, tapping process whole process Argon simultaneously add 1.5-2.5kg/ tons of steel of platform aluminium to carry out deep deoxidation, lifting temperature
1620-1650 DEG C of degree.
2. refining procedure: refining carries out white slag operation, and primary heating guarantees white slag, and keeps white slag in 10-15min, adds
Enter 600-800kg/ tons of steel of lime, 200-300kg/ tons of steel of modification agent, 60-80kg/ tons of steel of aluminium powder, 60-80kg/ tons of steel of calcium carbide,
Guarantee submerged arc effect, refining process heating is avoided to inhale nitrogen, feeds 5-7m/ tons of steel calcium iron wires and carry out Calcium treatment, argon gas soft blow 15-
20min。
3. continuous casting working procedure: big-and-middle packet 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 disc circle, 1030 ± 30 DEG C of steel billet tapping temperature, high pressure
Water de-scaling comes into operation, it is ensured that billet surface is estimated completely without iron sheet.1010 ± 30 DEG C of start rolling temperature, entry temperature at finishing 930 ± 20
DEG C, it spins 900 ± 20 DEG C of outlet temperature；0.18 m/s of roller-way first section speed all collects volume in collection reel, guarantees collection volume matter
Amount.
Embodiment 1
The Steel for cold heading processing of the present embodiment production, production method include the following steps:
1. converter smelting process: vanadium-bearing hot metal vanadium extraction by converter blowing smelts half steel after vanadium extraction, and process adds low-carbon ferromanganese
Alloying forbids after-blow, avoids in steel V from declining to a great extent and molten steel nitrogen pick-up, controls terminal C:0.065%, P:0.018%, S:
0.014%, V:0.011%, tapping process whole process Argon simultaneously add 1.5kg/ tons of steel of platform aluminium to carry out deep deoxidation, lift by crane 1630 DEG C of temperature.
2. refining procedure: refining carries out white slag operation, and primary heating guarantees white slag, and keeps white slag in 12min, is added
650kg/ tons of steel of lime, 220kg/ tons of steel of modification agent, 65kg/ tons of steel of aluminium powder, 65kg/ tons of steel of calcium carbide guarantee submerged arc effect, avoid
Nitrogen is inhaled in refining process heating, is fed 5m/ tons of steel calcium iron wires and is carried out Calcium treatment, argon gas soft blow 15min.
3. continuous casting working procedure: big-and-middle packet 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 disc circle, and 1000 DEG C of steel billet tapping temperature, high pressure water removes
Squama comes into operation, it is ensured that billet surface is estimated completely 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；0.18 m/s of roller-way first section speed all collects volume in collection reel, guarantees collection volume quality.
This Steel for cold heading processing chemical component and mass percentage 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 include the following steps:
1. converter smelting process: vanadium-bearing hot metal vanadium extraction by converter blowing smelts half steel after vanadium extraction, and process adds low-carbon ferromanganese
Alloying forbids after-blow, avoids in steel V from declining to a great extent and molten steel nitrogen pick-up, controls terminal C:0.072%, P:0.016%, S:
0.013%, V:0.012%, tapping process whole process Argon simultaneously add 1.6kg/ tons of steel of platform aluminium deep deoxidation to carry out, lift by crane 1635 DEG C of temperature.
2. refining procedure: refining carries out white slag operation, and primary heating guarantees white slag, and keeps white slag in 14min, is added
660kg/ tons of steel of lime, 235kg/ tons of steel of modification agent, 72kg/ tons of steel of aluminium powder, 70kg/ tons of steel of calcium carbide guarantee submerged arc effect, avoid
Nitrogen is inhaled in refining process heating, is fed 5.2m/ tons of steel calcium iron wires and is carried out Calcium treatment, argon gas soft blow 17min.
3. continuous casting working procedure: big-and-middle packet 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 disc circle, and 1020 DEG C of steel billet tapping temperature, high pressure water removes
Squama comes into operation, it is ensured that billet surface is estimated completely 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；0.18 m/s of roller-way first section speed all collects volume in collection reel, guarantees collection volume quality.
This Steel for cold heading processing chemical component and mass percentage 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 include the following steps:
1. converter smelting process: vanadium-bearing hot metal vanadium extraction by converter blowing smelts half steel after vanadium extraction, and process adds low-carbon ferromanganese
Alloying forbids after-blow, avoids in steel V from declining to a great extent and molten steel nitrogen pick-up, controls terminal C:0.083%, P:0.017%, S:
0.013%, V:0.014%, tapping process whole process Argon simultaneously add 1.9kg/ tons of steel of platform aluminium to carry out deep deoxidation, lift by crane 1650 DEG C of temperature.
2. refining procedure: refining carries out white slag operation, and primary heating guarantees white slag, and keeps white slag in 10min, is added
680kg/ tons of steel of lime, 242kg/ tons of steel of modification agent, 78kg/ tons of steel of aluminium powder, 75kg/ tons of steel of calcium carbide guarantee submerged arc effect, avoid
Nitrogen is inhaled in refining process heating, is fed 5.5m/ tons of steel calcium iron wires and is carried out Calcium treatment, argon gas soft blow 18min.
3. continuous casting working procedure: big-and-middle packet 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 disc circle, and 1040 DEG C of steel billet tapping temperature, high pressure water removes
Squama comes into operation, it is ensured that billet surface is estimated completely 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；0.18 m/s of roller-way first section speed all collects volume in collection reel, guarantees collection volume quality.
This Steel for cold heading processing chemical component and mass percentage 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 include the following steps:
1. converter smelting process: vanadium-bearing hot metal vanadium extraction by converter blowing smelts half steel after vanadium extraction, and process adds low-carbon ferromanganese
Alloying forbids after-blow, avoids in steel V from declining to a great extent and molten steel nitrogen pick-up, controls terminal C:0.088%, P:0.018%, S:
0.015%, V:0.015%, tapping process whole process Argon simultaneously add 2.2kg/ tons of steel of platform aluminium to carry out deep deoxidation, lift by crane 1620 DEG C of temperature.
2. refining procedure: refining carries out white slag operation, and primary heating guarantees white slag, and keeps white slag in 13min, is added
660kg/ tons of steel of lime, 265kg/ tons of steel of modification agent, 80kg/ tons of steel of aluminium powder, 78kg/ tons of steel of calcium carbide guarantee submerged arc effect, avoid
Nitrogen is inhaled in refining process heating, is fed 5.8m/ tons of steel m calcium iron wires and is carried out Calcium treatment, argon gas soft blow 20min.
3. continuous casting working procedure: big-and-middle packet 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 disc circle, and 1060 DEG C of steel billet tapping temperature, high pressure water removes
Squama comes into operation, it is ensured that billet surface is estimated completely 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；0.18 m/s of roller-way first section speed all collects volume in collection reel, guarantees collection volume quality.
This Steel for cold heading processing chemical component and mass percentage 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 include the following steps:
1. converter smelting process: vanadium-bearing hot metal vanadium extraction by converter blowing smelts half steel after vanadium extraction, and process adds low-carbon ferromanganese
Alloying forbids after-blow, avoids in steel V from declining to a great extent and molten steel nitrogen pick-up, controls terminal C:0.12%, P:0.013%, S:
0.012%, V:0.013%, tapping process whole process Argon simultaneously add 2.5kg/ tons of steel of platform aluminium to carry out deep deoxidation, lift by crane 1645 DEG C of temperature.
2. refining procedure: refining carries out white slag operation, and primary heating guarantees white slag, and keeps white slag in 12min, is added
600kg/ tons of steel of lime, 300kg/ tons of steel of modification agent, 60kg/ tons of steel of aluminium powder, 60kg/ tons of steel of calcium carbide guarantee submerged arc effect, avoid
Nitrogen is inhaled in refining process heating, is fed 6.5m/ tons of steel calcium iron wires and is carried out Calcium treatment, argon gas soft blow 16min.
3. continuous casting working procedure: big-and-middle packet 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 disc circle, and 1010 DEG C of steel billet tapping temperature, high pressure water removes
Squama comes into operation, it is ensured that billet surface is estimated completely 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；0.18 m/s of roller-way first section speed all collects volume in collection reel, guarantees collection volume quality.
This Steel for cold heading processing chemical component and mass percentage 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 include the following steps:
1. converter smelting process: converter vanadium-bearing hot metal is smelted, and process adds ferromanganese alloy, forbids after-blow, avoids steel
Middle V declines to a great extent and molten steel nitrogen pick-up, controls terminal C:0.06%, P:0.020%, S:0.013%, V:0.010%, and tapping process is whole
Argon simultaneously adds 2.3kg/ tons of steel of platform aluminium to carry out deep deoxidation, lifts by crane 1640 DEG C of temperature.
2. refining procedure: refining carries out white slag operation, and primary heating guarantees white slag, and keeps white slag in 15min, is added
800kg/ tons of steel of lime, 200kg/ tons of steel of modification agent, 65kg/ tons of steel of aluminium powder, 80kg/ tons of steel of calcium carbide guarantee submerged arc effect, avoid
Nitrogen is inhaled in refining process heating, is fed 7m/ tons of steel calcium iron wires and is carried out Calcium treatment, argon gas soft blow 16min.
3. continuous casting working procedure: big-and-middle packet 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 disc circle, and 1050 DEG C of steel billet tapping temperature, high pressure water removes
Squama comes into operation, it is ensured that billet surface is estimated completely 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, guarantees collection volume quality.
This Steel for cold heading processing chemical component and mass percentage are shown in Table 1, and testing result is shown in Table 2.
1 embodiment 1-6 Steel for cold heading processing chemical component of table and mass percentage (%)
2 embodiment 1-6 Steel for cold heading processing performance test results of table
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although referring to above-described embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that: still the present invention can be modified or be waited
With replacement, without departing from the spirit or scope of the invention, or any substitutions, should all cover in power of the invention
In sharp claimed range.
Claims (6)
1. a kind of method using vanadium-bearing hot metal production Steel for cold heading processing, which is characterized in that the Steel for cold heading processing chemical component and matter
Measure percentage composition are as follows: 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, essence
Refining, continuous casting, rolling process, the converter smelting process, vanadium-bearing hot metal vanadium extraction by converter blowing are smelted half steel after vanadium extraction, process
In plus ferromanganese alloy, forbid after-blow, avoid in steel V from declining to a great extent and molten steel nitrogen pick-up, control terminal C:0.06-0.12%,
P≤0.020%, S≤0.015%, V:0.010-0.015%；The converter smelting process, tapping process whole process Argon simultaneously add platform aluminium
1.5-2.5kg/ tons of steel carry out deep deoxidation, lift by crane 1620-1650 DEG C of temperature；The rolling process, 1010 ± 30 DEG C of start rolling temperature,
It 930 ± 20 DEG C of entry temperature at finishing, spins 900 ± 20 DEG C of outlet temperature；Roller-way first section speed 0.18m/s, all in collection reel
Interior collection volume guarantees collection volume quality.
2. a kind of method using vanadium-bearing hot metal production Steel for cold heading processing according to claim 1, which is characterized in that the essence
Process is refined, carries out white slag operation, primary heating guarantees white slag, and keeps white slag in 10-15min.
3. a kind of method using vanadium-bearing hot metal production Steel for cold heading processing according to claim 1 or 2, which is characterized in that institute
Refining procedure is stated, lime 600-800kg/ tons of steel, 200-300kg/ tons of steel of modification agent, 60-80kg/ tons of steel of aluminium powder, calcium carbide is added
60-80kg/ tons of steel guarantee submerged arc effect, and refining process heating is avoided to inhale nitrogen.
4. a kind of method using vanadium-bearing hot metal production Steel for cold heading processing according to claim 1 or 2, which is characterized in that institute
Refining procedure is stated, 5-7m/ tons of steel calcium iron wires is fed and carries out Calcium treatment, argon gas soft blow 15-20min.
5. a kind of method using vanadium-bearing hot metal production Steel for cold heading processing according to claim 1 or 2, which is characterized in that institute
State continuous casting working procedure, the big-and-middle packet 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.
6. a kind of method using vanadium-bearing hot metal production Steel for cold heading processing according to claim 1 or 2, which is characterized in that institute
Rolling process is stated, steel billet is rolled by Ф 6.5mm size disc circle, and 1030 ± 30 DEG C of steel billet tapping temperature, high-pressure water descaling is thrown
With, it is ensured that billet surface is estimated completely without iron sheet.
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| CN109825704B (en) * | 2019-04-12 | 2020-07-21 | 攀钢集团攀枝花钢铁研究院有限公司 | Smelting method of ferrovanadium alloy |
| 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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| CN102994686A (en) * | 2012-11-22 | 2013-03-27 | 河北钢铁股份有限公司承德分公司 | Technology for smelting ER70S-6 welding wire steel through utilizing vanadium-containing molten iron |
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| CN102994686A (en) * | 2012-11-22 | 2013-03-27 | 河北钢铁股份有限公司承德分公司 | Technology for smelting ER70S-6 welding wire steel through utilizing vanadium-containing molten iron |
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| "钒微合金化工艺在Q345B钢板生产中的应用";李建国;《河北冶金》;20121231(第2期);第39-42页 |
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