CN109290537A - A kind of production method of pure iron as raw material small billet - Google Patents
A kind of production method of pure iron as raw material small billet Download PDFInfo
- Publication number
- CN109290537A CN109290537A CN201811207752.XA CN201811207752A CN109290537A CN 109290537 A CN109290537 A CN 109290537A CN 201811207752 A CN201811207752 A CN 201811207752A CN 109290537 A CN109290537 A CN 109290537A
- Authority
- CN
- China
- Prior art keywords
- pure iron
- production method
- raw material
- crystallizer
- small billet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/112—Treating the molten metal by accelerated cooling
-
- 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
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
-
- 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
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
-
- 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
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
The present invention provides a kind of production methods of pure iron as raw material small billet; by implementing whole non-oxidation molding casting; control the temperature and oxygen content of Liquid Pure Iron; control crystallizer cooling water flow, M-EMS parameter, crystallizer protecting residue type; the technology measures such as pulling rate and secondary cooling intensity are controlled, realize the production of pure iron as raw material continuous cast billet.Batch, efficiently at low cost raw materials for production pure iron may be implemented in the present invention, and the pure iron as raw material ingredient of production is pure uniformly.
Description
Technical field
The invention belongs to continuous small-billet casting technical fields, and in particular to a kind of to utilize conticaster low cost, high efficiency production
The method of pure iron as raw material small billet.
Background technique
Compared with traditional metallicl magnetic material, iron-based non-crystalline alloy does not have since amorphous alloy atomic arrangement is unordered
The anisotropy of crystal, and resistivity is high, therefore has high magnetic conductivity, low loss, is excellent soft magnetic materials, production
Transformer core can greatly improve transformer efficiency, reduce volume, reduce weight, reduce energy consumption.And pure iron as raw material is production
One of primary raw material of iron-based non-crystalline alloy.
The production of original raw material pure iron steel ingot mainly using molding, exist production batch it is small, at high cost, ingot composition is uneven
The disadvantages of even.Therefore, it is necessary to a kind of methods for capableing of the stable pure iron as raw material small billet of the inexpensive quality of production of batch.
Summary of the invention
The purpose of the present invention is to provide a kind of production method of pure iron as raw material small billet, which utilizes conticaster
Raw materials for production pure iron small billet, can not only continuous production, high production efficiency, quality stablize, and without secondary cogging it is direct
It uses, downstream user reprocessing is convenient, save the cost.
To achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of production method of pure iron as raw material small billet, specifically: liquid material pure iron is injected to the centre of conticaster from ladle
Packet, then out of tundish injection crystallizer, liquid material pure iron cooled and solidified in crystallizer, obtains external solidification but centre is
The green shell of wick-containing pulls out green shell out of crystallizer, and the cooling side solidification of Bian Labian recycles cutting machine will to form steel ingot
The steel ingot of acquisition is cut into the pure iron as raw material square billet of required specification.
As currently preferred, the ingredient of liquid material pure iron in aforementioned production method are as follows: C≤0.0020%, Si≤
0.006%, Mn≤0.04%, P≤0.006%, S≤0.005%, Alt≤0.01%, Ni≤0.02%, Cr≤0.02%, Cu≤
0.05%, remaining is Fe and inevitable impurity.
As currently preferred, in aforementioned production method in ladle the temperature control of liquid material pure iron 1580 ~
1620℃。
As currently preferred, liquid material pure iron arrives crystallizer again from ladle to tundish in aforementioned production method
Casting process uses whole non-oxidation molding casting, specifically: the casting between ladle and tundish uses long nozzle and argon gas
Protection, the casting between tundish and crystallizer are protected using submersed nozzle, and coverture is added on pouring basket liquid level to completely cut off liquid
Covering slag is added on mold liquid level and completely cuts off air for contact of the face with air.
As currently preferred, coverture described in aforementioned production method has good spreadability, dross inclusion adsorption
Ability is good, there is certain heat insulation effect, and fume amount is small, meets environmental requirements；It has no adverse effects to molten steel, molten steel recarburization is less than
5ppm, good flowing properties, coverture face are not tied.
As currently preferred, covering slag described in aforementioned production method is Ultra-low carbon covering slag, and the Ultra-low carbon is protected
Protecting slag has good spreadability and heat insulating ability, can form the three-decker of reasonably stability, not conglomeration, and slag item is small；Have after fusing
Appropriate viscosity, lubricity, consumption are stablized, and heat flux is stablized, and cannot cause the bonding between green shell and copper sheet；It can preferably adsorb
It is mingled in steel, does not pollute molten steel, and entirely pours time covering slag invariance；Covering slag total carbon is less than 3wt%；Not because of covering slag original
Thus casting billet surface formation be mingled with, slag inclusion, crackle the defects of；0.5 ~ 0.65Kg of covering slag loss per ton steel.
As currently preferred, the temperature controlling range of liquid material pure iron in tundish described in aforementioned production method
It is 1545 ~ 1585 DEG C, Control for Oxygen Content range is 20ppm ~ 200ppm.
As currently preferred, electromagnetic agitation, the electricity of electromagnetic agitation are used in crystallizer described in aforementioned production method
Stream is 230 ~ 300A, and frequency is 2 ~ 6Hz.Electromagnetic agitation can be to green shell forced heat radiation.
As currently preferred, except carrying out forced heat radiation using electromagnetic agitation in crystallizer described in aforementioned production method
Also need cooling water cooling, the flow of cooling water is 2600 ~ 3200L/min in crystallizer.
As currently preferred, the speed that green shell is pulled out out of crystallizer in aforementioned production method is 2.0 ~ 2.8m/
min。
As currently preferred, secondary cooling is carried out when green shell is pulled out out of crystallizer in aforementioned production method, it is secondary
Cooling specific water's range is 1.45 ~ 1.70Kg/t steel.
As currently preferred, aforementioned production method is for producing section≤150 × 150mm2Pure iron as raw material square billet.
Compared with prior art, the invention has the benefit that
1, production method of the invention can produce pure iron as raw material small billet in batches, and continuous casting, which overcomes, molds single furnace production
More furnace continuous productions may be implemented by the buffer function of tundish in defect, therefore can produce in batches in terms of organization of production
Pure iron as raw material small billet.
2, production method of the invention can efficient raw materials for production pure iron small billet, when continuous casting, since crystallizer is cold
But water forces cooling and electromagnetic agitation forced heat dissipation function, and liquid material pure iron quickly solidifies shape in the crystallizer of water cooling
At certain thickness green shell, crystallizer can be pulled out, in subsequent operational process, surface of steel ingot is sprayed by water or water mist,
The cooling and solidification of steel ingot are accelerated, completes solidification completely before cutting, therefore pulling speed of continuous casting is high, operating efficiency is high.
3, pure iron as raw material small billet ingredient produced by the invention is pure uniformly, due to whole non-oxidation molding casting, prevents
The oxidation of liquid material pure iron；In addition, liquid material pure iron retention period in tundish, during inclusion floating therein enters
Between removal in covering agent, played the function of tundish metallurgy；Crystallizer uses electromagnetic agitation, can promote inclusion floating
Into covering slag.Therefore, compared with conventional die castings, the pure iron as raw material square billet degree of purity of continuous casting is high.
4, production method of the invention is a kind of method of inexpensive raw materials for production pure iron small billet, and continuous casting is from basic
On eliminate the loss of molding feed trumpet and Tang Dao, reduce the loss of cutting head, tail, therefore its recovery rate of iron is high, this can
Greatly reduce production cost.
Specific embodiment
Below with reference to the embodiment of the present invention, technical solution of the present invention is clearly and completely described.
Embodiment 1
The present invention provides a kind of production method of pure iron as raw material small billet, is 150 × 150mm for producing section2Raw material it is pure
Iron small billet.Detailed process are as follows: liquid material pure iron is injected to the tundish of billet caster from ladle, then is injected from tundish
Crystallizer, liquid material pure iron are cooling solidifying in the crystallizer that dummy bar head (be previously inserted in crystallizer and be sealed) is false bottom
Gu the green shell that outside solidification but centre are wick-containing is pulled out under the traction of dummy bar out of crystallizer with certain pulling rate, Bian La
It solidifies while cooling, to form the continuously casting of pure iron as raw material square billet, is cut the square billet of continuous casting using flame cutting machine
It is cut into scale.The small billet of production method production of the invention facilitates the use of downstream user, and ingredient is pure, compared to traditional mould
Casting mode, the present invention can be with continuous high-efficient raw materials for production pure iron small billets.
Liquid material pure iron is poured into crystallization from steel ladle pouring to tundish, then from tundish in production method of the invention
Whole non-oxidation molding casting is taken in device.Specifically: beam between ladle and tundish using long nozzle, gasket,
Argon gas protection, the beam between tundish and crystallizer are protected using submersed nozzle, and coverture is added in tundish to completely cut off
Contact of the liquid level with air, crystallizer are added covering slag and completely cut off air.In the present embodiment, the selection of coverture require be have it is good
Good spreadability, dross inclusion adsorption ability is good, there is certain heat insulation effect, and fume amount is small, meets environmental requirements；Invariably to molten steel
Good influence, molten steel recarburization are less than 5ppm, and good flowing properties, coverture face is not tied.Covering slag is Ultra-low carbon covering slag, described ultralow
The selection requirement of carbon covering slag is that have good spreadability and heat insulating ability, can form the three-decker of reasonably stability, not conglomeration,
Slag item is small；There are appropriate viscosity, lubricity after fusing, consumption is stablized, and heat flux is stablized, and cannot cause viscous between green shell and copper sheet
Knot；It can preferably adsorb in steel and be mingled with, not pollute molten steel, and entirely pour time covering slag invariance；Covering slag total carbon is less than 3%；
Not due to covering slag reason casting billet surface formation be mingled with, slag inclusion, crackle the defects of；0.5 ~ 0.65Kg of covering slag loss per ton steel.
The temperature that liquid material pure iron in tundish is controlled in production method of the invention is 1545 DEG C ~ 1585 DEG C: continuous casting
The temperature of liquid material pure iron in ladle of arriving at a station is controlled at 1580 DEG C ~ 1620 DEG C, is measured during casting to intermediate packet temperature.
The oxygen content range of tundish liquid material pure iron is 20ppm ~ 200ppm, and liquid is former at the end of refining in ladle
Control for Oxygen Content in material pure iron is contained during 20 ~ 185ppm, casting with the oxygen of apparatus for determination of oxygen detection tundish liquid material pure iron
Amount.
The pulling rate for controlling continuous casting process is 2.0 ~ 2.8m/min, sets pulling rate especially by operation button, system is by meter
The rotation speed of pulling-straightening roller is controlled after calculation, pulling-straightening roller compresses slab and rotates, and the frictional force by pulling-straightening roller Yu square billet surface drives
Slab walking.
Ultra-low carbon mould flux is added in crystallizer, and covering slag is added especially by manual or automatic plus covering slag device
In crystallizer, covering slag not only acts as isolation air and heat-insulated effect, also improvement Billet, increases green shell and crystallizer
Lubrication between copper pipe, in favor of producing direct motion.
Using M-EMS, mixing parametric is 230 ~ 300A of blender electric current, 2 ~ 6Hz of frequency, specific adjustment knot
Brilliant device stirring parameter setting value reaches required value, and M-EMS system will be worth as requested to be run.
After M-EMS comes into operation, the temperature of rapid homogeneously crystallized device liquid material pure iron eliminates overheat, accelerates the formation of green shell
And growth, pulling rate not only can be improved, additionally it is possible to the defects of eliminating square billet subcutaneous blowhole, being mingled with.
Crystallizer cooling water flow is 2600L/min ~ 3200L/min, especially by adjustment crystallizer cooling water pipeline valve
The opening degree of door, makes crystallizer cooling water inflow reach requirement water.Crystallizer cooling water, which plays, forces cooling effect, takes away liquid
The body pure iron as raw material initial stage cooling heat in process of setting.
Secondary cooling specific water's 1.45 ~ 1.70Kg/t steel, secondary cooling realized by secondary cooling system, secondary cooling system
Including compositions such as pipeline (containing control valve, filter, detection instrument), spray tube, nozzles, it is divided into 5 areas from top to bottom, each
Area's water individually controls, and by adjusting the flow in each area, secondary cooling water is made to reach the intensity of cooling of requirement.Specifically, according to from
Top to bottm is respectively the firstth area, the secondth area, third area, the 4th area, the 5th area, and the flow in the firstth area is 46 ~ 184L/min, and second
The flow in area is 52-211L/min, and the flow in third area is 32-132L/min, and the flow in the 4th area is 17-66L/min, the 5th
The flow in area is 16-66L/min.
Application examples
The pure iron as raw material trade mark: YT3；
Ingredient: C≤0.0020%, Si≤0.006%, Mn≤0.04%, P≤0.006%, S≤0.005%, Alt≤0.01%, Ni≤
0.02%, Cr≤0.02%, Cu≤0.05%, remaining is Fe and inevitable impurity.
Section: 150mm × 150mm；
Ladle temperature: 1600 DEG C；
Tundish temperature: 1580 DEG C；
Liquid material pure iron oxygen content in tundish: 100ppm；
Pulling rate: 2.2m/min；
Crystallizer cooling water flow: 3000L/min；
M-EMS: electric current 280A, frequency 4Hz；
Crystallizer protecting residue: Ultra-low carbon covering slag, it is artificial to be added；
Water Rate for Secondary Cooling Water: 1.50L/kg；
Lian Lalu number: 7 furnaces；
The condition of production: requiring to complete production task according to schedule, produces steady zero defects and occurs.
Quality condition: low power grading: center segregation C0.5, non-stop layer is loose, crack index 0, other defects without；Surface feelings
Condition: the defects of without Surface inclusion, stomata；Base shape: no off-square becomes without water chestnut, and base shape is good, and cross dimensions meets related request.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of production method of pure iron as raw material small billet, which is characterized in that the production method specifically: by liquid material pure iron
From the tundish of ladle injection conticaster, then out of tundish injection crystallizer, liquid material pure iron is cooling solidifying in crystallizer
Gu obtaining external solidification but the intermediate green shell for wick-containing, green shell is pulled out out of crystallizer, the cooling side solidification of Bian Labian, thus
Steel ingot is formed, recycles cutting machine that the steel ingot of acquisition is cut into the pure iron as raw material square billet of required specification.
2. the production method of pure iron as raw material small billet according to claim 1, which is characterized in that liquid in the production method
The ingredient of state pure iron as raw material are as follows: C≤0.0020%, Si≤0.006%, Mn≤0.04%, P≤0.006%, S≤0.005%, Alt≤
0.01%, Ni≤0.02%, Cr≤0.02%, Cu≤0.05%, remaining is Fe and inevitable impurity.
3. the production method of pure iron as raw material small billet according to claim 1, which is characterized in that liquid in the production method
State pure iron as raw material uses whole non-oxidation molding casting to the casting process of crystallizer again from ladle to tundish, specifically: steel
Casting between packet and tundish is protected using long nozzle and argon gas, and the casting between tundish and crystallizer uses submersed nozzle
It protects, coverture is added on pouring basket liquid level to completely cut off contact of the liquid level with air, covering slag isolation is added on mold liquid level
Air.
4. the production method of pure iron as raw material small billet according to claim 3, which is characterized in that the molten steel of the coverture
Carburetting is less than 5ppm.
5. the production method of pure iron as raw material small billet according to claim 3, which is characterized in that the covering slag is ultralow
The total carbon of carbon covering slag, the Ultra-low carbon covering slag is less than 3wt%.
6. the production method of pure iron as raw material small billet according to claim 1, which is characterized in that institute in the production method
State liquid material pure iron in tundish temperature controlling range be 1545 ~ 1585 DEG C, Control for Oxygen Content range be 20ppm ~
200ppm。
7. the production method of pure iron as raw material small billet according to claim 1, which is characterized in that institute in the production method
It states using electromagnetic agitation in crystallizer, the electric current of electromagnetic agitation is 230 ~ 300A, and frequency is 2 ~ 6Hz.
8. the production method of pure iron as raw material small billet according to claim 1, which is characterized in that institute in the production method
It states except also needing cooling water cooling using electromagnetic agitation progress forced heat radiation in crystallizer, the flow of cooling water is in crystallizer
2600~3200L/min。
9. the production method of pure iron as raw material small billet according to claim 1, which is characterized in that base in the production method
The speed that shell is pulled out out of crystallizer is 2.0 ~ 2.8m/min.
10. the production method of pure iron as raw material small billet according to claim 1, which is characterized in that in the production method
Secondary cooling is carried out when green shell is pulled out out of crystallizer, secondary cooling specific water's range is 1.45 ~ 1.70Kg/t steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811207752.XA CN109290537B (en) | 2018-10-17 | 2018-10-17 | Production method of pure iron billet serving as raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811207752.XA CN109290537B (en) | 2018-10-17 | 2018-10-17 | Production method of pure iron billet serving as raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109290537A true CN109290537A (en) | 2019-02-01 |
| CN109290537B CN109290537B (en) | 2021-02-09 |
Family
ID=65163010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811207752.XA Active CN109290537B (en) | 2018-10-17 | 2018-10-17 | Production method of pure iron billet serving as raw material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109290537B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115125435A (en) * | 2022-05-25 | 2022-09-30 | 江苏现代综合特殊钢有限公司 | Cold heading steel, preparation method thereof and method for preparing steel wire by adopting cold heading steel |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041878A (en) * | 2007-04-23 | 2007-09-26 | 钢铁研究总院 | Low-manganese low- sulfur raw material ferroferrite for amorphous usage and method of production |
| CN101538634A (en) * | 2009-02-05 | 2009-09-23 | 丁家伟 | Smelting process and device of pure iron |
| CN101993974A (en) * | 2009-08-10 | 2011-03-30 | 鞍钢股份有限公司 | Production method of pure iron with extremely low gas content |
| CN101993973A (en) * | 2009-08-10 | 2011-03-30 | 鞍钢股份有限公司 | Method for producing high-purity pure iron |
| CN104264053A (en) * | 2014-08-29 | 2015-01-07 | 武汉钢铁(集团)公司 | Production method of raw material pure iron rod for NdFeB (neodymium iron boron) |
| CN104862443A (en) * | 2015-03-31 | 2015-08-26 | 青岛钢铁控股集团有限责任公司 | Smelting method for low-carbon low-silicon wire-welding steel |
| CN105018669A (en) * | 2015-07-15 | 2015-11-04 | 邢台钢铁有限责任公司 | Method for producing technically pure iron for nuclear power |
| CN106493321A (en) * | 2016-11-08 | 2017-03-15 | 凯诺斯(中国)铝酸盐技术有限公司 | Steel-making tundish covering flux and preparation method thereof |
| CN106825463A (en) * | 2017-02-09 | 2017-06-13 | 首钢总公司 | A kind of method that billet caster produces low-carbon (LC) Ni Mo steel alloys |
| CN108559905A (en) * | 2018-03-09 | 2018-09-21 | 邢台钢铁有限责任公司 | High amorphized silicon pure iron as raw material and its production method |
-
2018
- 2018-10-17 CN CN201811207752.XA patent/CN109290537B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041878A (en) * | 2007-04-23 | 2007-09-26 | 钢铁研究总院 | Low-manganese low- sulfur raw material ferroferrite for amorphous usage and method of production |
| CN101538634A (en) * | 2009-02-05 | 2009-09-23 | 丁家伟 | Smelting process and device of pure iron |
| CN101993974A (en) * | 2009-08-10 | 2011-03-30 | 鞍钢股份有限公司 | Production method of pure iron with extremely low gas content |
| CN101993973A (en) * | 2009-08-10 | 2011-03-30 | 鞍钢股份有限公司 | Method for producing high-purity pure iron |
| CN104264053A (en) * | 2014-08-29 | 2015-01-07 | 武汉钢铁(集团)公司 | Production method of raw material pure iron rod for NdFeB (neodymium iron boron) |
| CN104862443A (en) * | 2015-03-31 | 2015-08-26 | 青岛钢铁控股集团有限责任公司 | Smelting method for low-carbon low-silicon wire-welding steel |
| CN105018669A (en) * | 2015-07-15 | 2015-11-04 | 邢台钢铁有限责任公司 | Method for producing technically pure iron for nuclear power |
| CN106493321A (en) * | 2016-11-08 | 2017-03-15 | 凯诺斯(中国)铝酸盐技术有限公司 | Steel-making tundish covering flux and preparation method thereof |
| CN106825463A (en) * | 2017-02-09 | 2017-06-13 | 首钢总公司 | A kind of method that billet caster produces low-carbon (LC) Ni Mo steel alloys |
| CN108559905A (en) * | 2018-03-09 | 2018-09-21 | 邢台钢铁有限责任公司 | High amorphized silicon pure iron as raw material and its production method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115125435A (en) * | 2022-05-25 | 2022-09-30 | 江苏现代综合特殊钢有限公司 | Cold heading steel, preparation method thereof and method for preparing steel wire by adopting cold heading steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109290537B (en) | 2021-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102218516B (en) | Continuous casting method of high chrome steel | |
| CN104525880B (en) | A kind of manufacture method of large section round billet | |
| CN110340315B (en) | Method for continuously casting martensitic stainless steel by using large-section rectangular billet | |
| CN103567410A (en) | Process for controlling center porosity of large and round continuous casting billet | |
| CN100537786C (en) | A kind of melting of ultra-large thick-wall spheroidal cast iron element and on-the-spot metamorphism treatment method | |
| CN103938127B (en) | Method for preparing iron-based amorphous broadband | |
| CN110724841B (en) | Preparation method of immiscible alloy and continuous casting equipment | |
| CN110814305A (en) | Cu-Fe composite material double-melt mixed casting equipment and process | |
| CN100435244C (en) | Nano crystal soft magnetic alloy superthin belt and mfg method thereof | |
| JP4430638B2 (en) | Mold powder for continuous casting of high aluminum steel | |
| CN112570676B (en) | Method for producing high-carbon steel by double-flow slab continuous casting machine | |
| CN109290537A (en) | A kind of production method of pure iron as raw material small billet | |
| CN109112418A (en) | Continuous casting method of high manganese steel | |
| CN116422853B (en) | Die steel and continuous casting production method thereof | |
| JPS63195253A (en) | Manufacture of phosphor bronze sheet metal | |
| CN105682825A (en) | Continuous casting method | |
| CN102974794B (en) | Device and method for reducing superheat degree of molten steel of continuous casting ladle or intermediate ladle | |
| CN111591996B (en) | Method for preparing industrial silicon by using ferrosilicon | |
| JP4527693B2 (en) | Continuous casting method of high Al steel slab | |
| CN115533054A (en) | Method for reducing superheat degree of molten steel in continuous casting tundish | |
| CN107326258B (en) | A kind of following minor diameter Ductile iron bar of diameter 25mm and preparation method thereof | |
| CN110369682A (en) | A kind of device and method preparing big ingot casting based on slag protection multilayer casting field supply combined processing | |
| CN108889915A (en) | A method of the layer-by-layer casting based on slag protection prepares ingot casting | |
| US3727669A (en) | Process for continuous casting of steel for making grain-oriented electrical sheet in strip or sheets | |
| CN116673452B (en) | Method for controlling magnesium content in steel in casting process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |