CN107460409A - A kind of pole jaw of car electricity generator high Al electrician's billet and its production method - Google Patents
A kind of pole jaw of car electricity generator high Al electrician's billet and its production method Download PDFInfo
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- CN107460409A CN107460409A CN201710543604.4A CN201710543604A CN107460409A CN 107460409 A CN107460409 A CN 107460409A CN 201710543604 A CN201710543604 A CN 201710543604A CN 107460409 A CN107460409 A CN 107460409A
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- 230000005611 electricity Effects 0.000 title claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 71
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000003723 Smelting Methods 0.000 claims abstract description 22
- 238000009749 continuous casting Methods 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 69
- 239000010959 steel Substances 0.000 claims description 69
- 239000002893 slag Substances 0.000 claims description 36
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 33
- 229910052760 oxygen Inorganic materials 0.000 claims description 33
- 239000001301 oxygen Substances 0.000 claims description 33
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 26
- 229910052782 aluminium Inorganic materials 0.000 claims description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 26
- 238000005261 decarburization Methods 0.000 claims description 18
- 239000011575 calcium Substances 0.000 claims description 17
- 239000004411 aluminium Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 14
- 229910052786 argon Inorganic materials 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 11
- 229910052791 calcium Inorganic materials 0.000 claims description 11
- 238000010079 rubber tapping Methods 0.000 claims description 11
- 239000011521 glass Substances 0.000 claims description 8
- 239000005997 Calcium carbide Substances 0.000 claims description 6
- 238000005275 alloying Methods 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 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 6
- 238000010792 warming Methods 0.000 claims description 6
- 238000007872 degassing Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000005291 magnetic effect Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 9
- 238000003801 milling Methods 0.000 description 5
- 230000002441 reversible effect Effects 0.000 description 5
- 230000003009 desulfurizing effect Effects 0.000 description 4
- 238000007670 refining Methods 0.000 description 4
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 230000001960 triggered effect Effects 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
-
- 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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
-
- 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
- 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
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
-
- 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
- C21C7/068—Decarburising
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- 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
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)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of pole jaw of car electricity generator high Al electrician's billet and its production method, electrician's billet chemical composition and weight/mass percentage composition are：C≤0.010%、Si≤0.10%、Mn≤0.10%、P≤0.010%、S≤0.010%、Alt：0.30 0.40%, remaining is Fe and inevitable impurity.Production method includes molten iron pretreatment, converter smelting, LF stoves, RH stoves, continuous casting, cogging process.Small billet product produced by the invention, stable components are uniform, and impurity element is less, meet production requirement of the user to outlet pole jaw of car electricity generator；Product can improve generated energy 5 8%, while 0.5mm can be integrally thinned in pole pawl thickness, effectively reduce magnetic resistance, also there is obvious effect for dynamic balancing and lightweight, it disclosure satisfy that outlet power generator electrode jaw generated energy is stable, the small quality requirement of noise, using effect is good.
Description
Technical field
The invention belongs to metallurgical technology field, and in particular to a kind of pole jaw of car electricity generator with high Al electrician's billet and its
Production method.
Background technology
Pole pawl is used in the rotor of AC generator for vehicle excitation, and function plays magnetic conduction.Automotive brushless generator pole pawl
It is general to be made using the method for cast steel shaping or using gapless stainless steel tube, but due to cast steel or stainless steel material composition not
Stable or impurity element is more, can cause that ferromagnetic property is unstable, and magnetic resistance is big, and generated energy is low, while have impact on dynamically balanced school
Just.With the progress of automotive engineering, the electrical equipment on car is continuously increased, and power consumption more and more higher, noise also increases therewith.With
It is inevitable the comfort level increase ridden and the requirement to environment, noise-reducing.
In face of the demand of user, we are developed on the basis of national standard electrical sheet plus Al electrician's billet product and production
Method, downstream user's offer part 150mm × 150mm square billet product, user make pole pawl using the method for forging and stamping, used
After work well, disclosure satisfy that outlet pole pawl generated energy is stable, dynamic balancing is preferable, the small quality requirement of noise, ensures quality
While, steel grade Al content scope is controlled, cost optimization can be achieved.Generated energy 5-8% can be improved by taking charge of product using me, simultaneously
Pole pawl thickness also can be reduced effectively, and for reducing magnetic resistance, improving dynamic balancing and lightweight has obvious effect.
General high Al electrical sheets are easy to produce using slab, and use in the Al content steel grade of square billet technique meet Lingao
Al2O3It is mingled with and blocks the mouth of a river, crystallizer protecting residue is denatured and produces the problem of surface quality of billet is poor.This patent is intended to utilize
Stable metallurgical technology produces high Al electrician's billet, is produced using cogging technics production suitable for the small billet that user uses
Product, reach and meet production requirement of the user to outlet pole jaw of car electricity generator.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of pole jaw of car electricity generator with high Al electrician's billet；This hair
It is bright to additionally provide a kind of production method of pole jaw of car electricity generator with high Al electrician's billet.
In order to solve the above technical problems, the technical solution used in the present invention is：A kind of high Al of pole jaw of car electricity generator
Electrician's billet, electrician's billet chemical composition and weight/mass percentage composition are：C≤0.010%、Si≤0.10%、Mn≤
0.10%、P≤0.010%、S≤0.010%、Alt：0.30-0.40%, remaining is Fe and inevitable impurity.
A kind of production method present invention also offers pole jaw of car electricity generator with high Al electrician's billet, the producer
Method includes molten iron pretreatment, converter smelting, LF stoves, RH stoves, continuous casting, cogging process.
Hot metal pre process procedures of the present invention, control molten iron S≤0.006%.
Converter smelting process of the present invention, converter smelting use deslagging technique early stage, and the later stage is re-blow using high drawing, tapped
C≤0.05%；Control liquid steel temperature≤1620 DEG C.
Converter smelting process of the present invention, molten steel tapping use slide plate pushing off the slag, control the lower quantity of slag；Control tapping oxygen≤
600ppm；Using aluminium block deoxidation, aluminium block addition=[（Tapping oxygen content/10）+30]kg.
Furnaceman's LF sequence of the present invention, after LF enters the station, it is warming up to 1650~1670 DEG C；When carrying out deoxidation slag making, bottom is controlled
Blowing argon gas soft blow is to the exposed diameter 100-200mm of liquid steel level；Add calcium carbide 0.45-0.55 ㎏/t steel, aluminum shot 1.6-2.2 ㎏/t
Steel carries out pushing up slag deoxidation, controls Oxygen Content in Liquid Steel≤30ppm；Clinker color is changed into clear glass slag or green glass slag；Molten steel from
Stand aluminium content≤0.03%.
Furnaceman's RH sequence of the present invention, LF is leaving from station, and molten steel is transported to RH stoves, carries out OB（Oxygen blast）Operation, OB are used after starting
Full pumping application of vacuum, control decarburization remaining oxygen is in 300-500ppm；Control minimum vacuum≤100pa；After OB terminates, control
Decarburization circulation time >=8min；After decarburization terminates, aluminum shot deoxidation alloying is added, addition is 5.0-5.5kg/ ton steel, pure de-
Pressed again after gas circulation time >=5min.
Furnaceman's RH sequence of the present invention, the pure calcium line of real core is fed in molten steel, control Ca：25-45ppm, subsequently keep soft blow
≥5min。
Continuous casting working procedure of the present invention, after molten steel RH is leaving from station, upper conticaster is cast into 325mm × 280mm blooms, big bag
Protected using long nozzle, crystallizer carries out whole process protection cast using submersed nozzle, and tundish temperature is controlled in 1560-1580
DEG C, casting speed control is in 0.60-0.75 m/min, and stopper argon blowing rate is in 80~120NL/h.It is shown in Table using covering slag technical standard
1。
The covering slag technical indicator of table 1
| SiO2 | CaO | MgO | AL2O3 | Fe2O3 | MnO2 | Na2O |
| 40.41±3 | 26.24±3 | 3.02±0.5 | 3.0±0.5 | ≤1.21 | ≤1.02 | 6.52±0.5 |
| F | C | H20 | R | Density | Fusing point standard DEG C | Viscosity（Pool） |
| 8.22±0.5 | 6.92±0.5 | ≤0.50 | 0.65±0.03 | 0.70±0.20 | 1187±50 | 3.70±1.00 |
Cogging process of the present invention, 1130-1150 DEG C of heating-up temperature, heat time 200-250min, control remaining oxygen≤4%；
Using two-roller reversible milling train（φ800mm）It is 150mm × 150mm the specifications for being adapted to user's following process to use by bloom cogging
Square billet.
The mentality of designing of the inventive method is as follows：
Contain higher Al compositions in pure iron, general steel mill is easier to using slab production, but larger using billet production difficulty.
Because the square billet mouth of a river is small, more deoxidation products can produce clogging to the mouth of a river, it is difficult to obtain square billet by continuous casting process means
Product.Secondly, Al elements are higher in steel, covering slag can be triggered to be denatured, so as to cause surface quality of billet problem.
This method develop including molten iron pretreatment, converter smelting, LF stoves, RH stoves, continuous casting, cogging production technology.For
Ensure the stable casting of molten steel, Calcium treatment technique is employed in molten steel and coordinates continuous casting big flow stopper Argon, avoids wadding
Flow phenomenon；Using mould flux, avoiding covering slag turck's zone, to carry out lubrication of crystallizer bad, produces surface quality problems.
It is using beneficial effect caused by above-mentioned technical proposal：1st, the present invention is high using stable metallurgical technology production
Al electrician's billet, the small billet product used using cogging technics production suitable for user, stable components are uniform, impurity member
Element is less, meets production requirement of the user to outlet pole jaw of car electricity generator.2nd, the product of the inventive method production can improve
Generated energy 5-8%, while at least 0.5mm can be integrally thinned in pole pawl thickness, effectively reduce magnetic resistance, for dynamic balancing and light weight
Change also has obvious effect.3rd, the product of the inventive method production disclosure satisfy that outlet power generator electrode jaw generated energy is stable, noise
Small quality requirement, using effect are good.
Embodiment
With reference to specific embodiment, the present invention is further detailed explanation.
Embodiment 1
The present embodiment pole jaw of car electricity generator is with high Al electrician's billet chemical composition and weight/mass percentage composition：C：0.010%、
Si：0.10%、Mn：0.10%、P：0.010%、S：0.010%、Alt：0.40%, remaining is Fe and inevitable impurity.
The present embodiment pole jaw of car electricity generator includes molten iron pretreatment, converter smelting with the production method of high Al electrician's billet
Refining, LF stoves, RH stoves, continuous casting, cogging process, concrete technology step are as follows：
（1）Hot metal pre process procedures：Molten iron pretreatment desulfurizing, molten iron S are carried out using blast furnace：0.006%；
（2）Converter smelting process：Converter smelting uses deslagging technique early stage, and the later stage is re-blow using high drawing, and tap C：0.05%；Steel
1620 DEG C of coolant-temperature gage, molten steel tapping use slide plate pushing off the slag, control the lower quantity of slag；Tap oxygen 600ppm；Add 90kg aluminium block deoxidations；
（3）Furnaceman's LF sequence：After LF enters the station, 1670 DEG C are warming up to, when carrying out deoxidation slag making, control argon bottom-blowing soft blow to molten steel liquid
The exposed diameter 200mm in face；Add 0.45 ㎏ of calcium carbide/t steel, 1.6 ㎏ of aluminum shot/t steel carries out pushing up slag deoxidation, Oxygen Content in Liquid Steel 30ppm；
Clinker color is changed into green glass slag；Molten steel aluminium content 0.03% leaving from station；
（4）Furnaceman's RH sequence：LF is leaving from station, and molten steel is transported to RH stoves, carries out OB（Oxygen blast）Operation, OB are used at full pumping vacuum after starting
Reason, decarburization remaining oxygen 500ppm；Minimum vacuum 100pa；After OB terminates, decarburization circulation 8min.After decarburization terminates, aluminum shot is added
5.5kg/t steel carries out deoxidation alloying, is pressed again after pure degassing circulation 5min；Calcium treatment：The pure calcium line control of real core is fed in molten steel
Ca：45ppm, follow-up soft blow 5min；
（5）Continuous casting working procedure：After molten steel RH is leaving from station, upper R12m circular-arc type continuous casting machines（Section 325mm × 280mm）Be cast into 325mm ×
280mm blooms, big bag are protected using long nozzle, and crystallizer carries out whole process protection cast, tundish temperature using submersed nozzle
1580 DEG C, pulling rate 0.60m/min, stopper argon blowing rate is in 120NL/h；
（6）Cogging process：Cogging heating-up temperature controls remaining oxygen 4% at 1150 DEG C, heat time 250min；Using two-roller reversible
Milling train（φ800mm）It is 150mm × 150mm specification the square billets for being adapted to user's following process to use by bloom cogging.
Embodiment 2
The present embodiment pole jaw of car electricity generator is with high Al electrician's billet chemical composition and weight/mass percentage composition：C：0.006%、
Si：0.02%、Mn：0.060%、P：0.008%、S：0.006%、Alt：0.30%, remaining is Fe and inevitable impurity.
The present embodiment pole jaw of car electricity generator includes molten iron pretreatment, converter smelting with the production method of high Al electrician's billet
Refining, LF stoves, RH stoves, continuous casting, cogging process, concrete technology step are as follows：
（1）Hot metal pre process procedures：Molten iron pretreatment desulfurizing, molten iron S are carried out using blast furnace：0.006%；
（2）Converter smelting process：Converter smelting uses deslagging technique early stage, and the later stage is re-blow using high drawing, and tap C：0.04%；Steel
For coolant-temperature gage at 1610 DEG C, molten steel tapping uses slide plate pushing off the slag, controls the lower quantity of slag；Tap oxygen 500ppm；Add 80kg aluminium block deoxidations；
（3）Furnaceman's LF sequence：After LF enters the station, 1650 DEG C are warming up to, when carrying out deoxidation slag making, control argon bottom-blowing soft blow to molten steel liquid
The exposed diameter 100mm in face；Add 0.55 ㎏ of calcium carbide/t steel, 2.2 ㎏ of aluminum shot/t steel carries out pushing up slag deoxidation, Oxygen Content in Liquid Steel 25ppm；
Clinker color is changed into clear glass slag；Molten steel aluminium content 0.028% leaving from station；
（4）Furnaceman's RH sequence：LF is leaving from station, and molten steel is transported to RH stoves, carries out OB（Oxygen blast）Operation, OB are used at full pumping vacuum after starting
Reason, decarburization remaining oxygen is in 300ppm；Minimum vacuum 90pa；After OB terminates, decarburization circulation 9min is controlled；After decarburization terminates, add
Enter aluminum shot 5.0kg/t steel-deoxidizing alloyings, pressed again after pure degassing circulation 5 min；Calcium treatment：The pure calcium line control of real core is fed in molten steel
Ca processed：25ppm, it is follow-up to keep soft blow 5min；
（5）Continuous casting working procedure：After molten steel RH is leaving from station, upper R12m circular-arc type continuous casting machines（Section 325mm × 280mm）Be cast into 325mm ×
280mm blooms, big bag are protected using long nozzle, and crystallizer carries out whole process protection cast, tundish temperature using submersed nozzle
1560 DEG C, pulling rate 0.75m/min, stopper argon blowing rate is in 80NL/h；
（6）Cogging process：Cogging heating-up temperature is at 1130 DEG C, heat time 200min, remaining oxygen 2%；Using two-roller reversible milling train
（φ800mm）It is 150mm × 150mm specification the square billets for being adapted to user's following process to use by bloom cogging.
Embodiment 3
The present embodiment pole jaw of car electricity generator is with high Al electrician's billet chemical composition and weight/mass percentage composition：C：0.005%、
Si：0.03%、Mn：0.06%、P：0.008%、S：0.007%、Alt：0.35%, remaining is Fe and inevitable impurity.
The present embodiment pole jaw of car electricity generator includes molten iron pretreatment, converter smelting with the production method of high Al electrician's billet
Refining, LF stoves, RH stoves, continuous casting, cogging process, concrete technology step are as follows：
（1）Hot metal pre process procedures：Molten iron pretreatment desulfurizing, molten iron S are carried out using blast furnace：0.005%；
（2）Converter smelting process：Converter smelting uses deslagging technique early stage, and the later stage is re-blow using high drawing, and tap C：0.03%；Steel
For coolant-temperature gage at 1615 DEG C, molten steel tapping uses slide plate pushing off the slag, controls the lower quantity of slag；Tap oxygen 550ppm；Add 85kg aluminium block deoxidations；
（3）Furnaceman's LF sequence：After LF enters the station, 1660 DEG C are warming up to, when carrying out deoxidation slag making, control argon bottom-blowing soft blow to molten steel liquid
The exposed diameter 150mm in face；Add 0.50 ㎏ of calcium carbide/t steel, 1.8 ㎏ of aluminum shot/t steel carries out pushing up slag deoxidation, Oxygen Content in Liquid Steel 24ppm；
Clinker color is changed into clear glass slag；Molten steel aluminium content 0.026% leaving from station；
（4）Furnaceman's RH sequence：LF is leaving from station, and molten steel is transported to RH stoves, carries out OB（Oxygen blast）Operation, OB are used at full pumping vacuum after starting
Reason, decarburization remaining oxygen is in 400ppm；Minimum vacuum 80pa；After OB terminates, decarburization circulation 10min is controlled；After decarburization terminates, add
Enter aluminum shot 5.3kg/t steel-deoxidizing alloyings, pressed again after pure degassing circulation 5 min；Calcium treatment：The pure calcium line control of real core is fed in molten steel
Ca processed：30ppm, it is follow-up to keep soft blow 5min；
（5）Continuous casting working procedure：After molten steel RH is leaving from station, upper R12m circular-arc type continuous casting machines（Section 325mm × 280mm）Be cast into 325mm ×
280mm blooms, big bag are protected using long nozzle, and crystallizer carries out whole process protection cast, tundish temperature using submersed nozzle
1570 DEG C, 0.65m/min, stopper argon blowing rate is in 100NL/h；
（6）Cogging process：Cogging heating-up temperature is at 1140 DEG C, heat time 225min, remaining oxygen 3%；Using two-roller reversible milling train
（φ800mm）It is 150mm × 150mm specification the square billets for being adapted to user's following process to use by bloom cogging.
Embodiment 4
The present embodiment pole jaw of car electricity generator is with high Al electrician's billet chemical composition and weight/mass percentage composition：C：0.006%、
Si：0.03%、Mn：0.07%、P：0.008%、S：0.007%、Alt：0.37%, remaining is Fe and inevitable impurity.
The present embodiment pole jaw of car electricity generator includes molten iron pretreatment, converter smelting with the production method of high Al electrician's billet
Refining, LF stoves, RH stoves, continuous casting, cogging process, concrete technology step are as follows：
（1）Hot metal pre process procedures：Molten iron pretreatment desulfurizing, molten iron S are carried out using blast furnace：0.005%；
（2）Converter smelting process：Converter smelting uses deslagging technique early stage, and the later stage is re-blow using high drawing, and tap C：0.04%；Steel
For coolant-temperature gage at 1618 DEG C, molten steel tapping uses slide plate pushing off the slag, controls the lower quantity of slag；Tap oxygen 560ppm；Add 86kg aluminium block deoxidations；
（3）Furnaceman's LF sequence：After LF enters the station, 1660 DEG C are warming up to, when carrying out deoxidation slag making, control argon bottom-blowing soft blow to molten steel liquid
The exposed diameter 180mm in face；Add 0.52 ㎏ of calcium carbide/t steel, 2.0 ㎏ of aluminum shot/t steel carries out pushing up slag deoxidation, Oxygen Content in Liquid Steel 27ppm；
Clinker color is changed into clear glass slag；Molten steel aluminium content 0.027% leaving from station；
（4）Furnaceman's RH sequence：LF is leaving from station, and molten steel is transported to RH stoves, carries out OB（Oxygen blast）Operation, OB are used at full pumping vacuum after starting
Reason, decarburization remaining oxygen is in 450ppm；Minimum vacuum 90pa；After OB terminates, decarburization circulation 9min is controlled；After decarburization terminates, add
Enter aluminum shot 5.2kg/t steel-deoxidizing alloyings, pressed again after pure degassing circulation 5 min；Calcium treatment：The pure calcium line control of real core is fed in molten steel
Ca processed：35ppm, it is follow-up to keep soft blow 5min；
（5）Continuous casting working procedure：After molten steel RH is leaving from station, upper R12m circular-arc type continuous casting machines（Section 325mm × 280mm）Be cast into 325mm ×
280mm blooms, big bag are protected using long nozzle, and crystallizer carries out whole process protection cast, tundish temperature using submersed nozzle
1575 DEG C, 0.70m/min, stopper argon blowing rate is in 110NL/h；
（6）Cogging process：Cogging heating-up temperature is at 1145 DEG C, heat time 230min, remaining oxygen 3%；Using two-roller reversible milling train
（φ800mm）It is 150mm × 150mm specification the square billets for being adapted to user's following process to use by bloom cogging.
Above example is only to illustrative and not limiting technical scheme, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacing, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover the power in the present invention
Among sharp claimed range.
Claims (10)
- A kind of 1. high Al electrician's billet of pole jaw of car electricity generator, it is characterised in that electrician's billet chemical composition and Weight/mass percentage composition is：C≤0.010%、Si≤0.10%、Mn≤0.10%、P≤0.010%、S≤0.010%、Alt：0.30- 0.40%, remaining is Fe and inevitable impurity.
- 2. based on a kind of production method of high Al electrician's billet of pole jaw of car electricity generator described in claim 1, its feature It is, the production method includes molten iron pretreatment, converter smelting, LF stoves, RH stoves, continuous casting, cogging process.
- 3. a kind of pole jaw of car electricity generator according to claim 2 production method of high Al electrician's billet, its feature It is, the hot metal pre process procedures, controls molten iron S≤0.006%.
- 4. a kind of pole jaw of car electricity generator according to claim 2 production method of high Al electrician's billet, its feature It is, the converter smelting process, converter smelting uses deslagging technique early stage, and the later stage is re-blow using high drawing, C≤0.05% of tapping； Control liquid steel temperature≤1620 DEG C.
- 5. a kind of pole jaw of car electricity generator according to claim 2 production method of high Al electrician's billet, its feature It is, the converter smelting process, molten steel tapping uses slide plate pushing off the slag, controls the lower quantity of slag；Control tapping oxygen≤600ppm；Using Aluminium block deoxidation, aluminium block addition=[（Tapping oxygen content/10）+30]kg.
- A kind of 6. producer of the high Al electrician's billet of pole jaw of car electricity generator according to claim 2-5 any one Method, it is characterised in that furnaceman's LF sequence, after LF enters the station, be warming up to 1650~1670 DEG C；When carrying out deoxidation slag making, bottom is controlled Blowing argon gas soft blow is to the exposed diameter 100-200mm of liquid steel level；Add calcium carbide 0.45-0.55 ㎏/t steel, aluminum shot 1.6-2.2 ㎏/t Steel carries out pushing up slag deoxidation, controls Oxygen Content in Liquid Steel≤30ppm；Clinker color is changed into clear glass slag or green glass slag；Molten steel from Stand aluminium content≤0.03%.
- A kind of 7. producer of the high Al electrician's billet of pole jaw of car electricity generator according to claim 2-5 any one Method, it is characterised in that furnaceman's RH sequence, LF is leaving from station, and molten steel is transported to RH stoves, carries out OB oxygen blast operations, and OB oxygen blast is adopted after starting With full pumping application of vacuum, control decarburization remaining oxygen is in 300-500ppm；Control minimum vacuum≤100pa；After OB terminates, control Decarburization circulation time >=8min processed；After decarburization terminates, aluminum shot deoxidation alloying is added, addition is 5.0-5.5kg/ ton steel, pure Pressed again after degassing circulation time >=5min.
- A kind of 8. producer of the high Al electrician's billet of pole jaw of car electricity generator according to claim 2-5 any one Method, it is characterised in that furnaceman's RH sequence, the pure calcium line of real core is fed in molten steel, control Ca：25-45ppm, subsequently keep soft blow ≥5min。
- A kind of 9. producer of the high Al electrician's billet of pole jaw of car electricity generator according to claim 2-5 any one Method, it is characterised in that the continuous casting working procedure, after molten steel RH is leaving from station, upper conticaster is cast into 325mm × 280mm blooms, big bag Protected using long nozzle, crystallizer carries out whole process protection cast using submersed nozzle, and tundish temperature is controlled in 1560-1580 DEG C, pulling rate 0.60-0.75m/min, stopper argon blowing rate is in 80~120NL/h.
- A kind of 10. production of the high Al electrician's billet of pole jaw of car electricity generator according to claim 2-5 any one Method, it is characterised in that the cogging process, 1130-1150 DEG C of heating-up temperature, heat time 200-250min, control residual oxygen Amount≤4%；It is 150mm × 150mm square billets by bloom cogging.
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