CN104668526B - Improve the method for steel ingot ingot quality - Google Patents
Improve the method for steel ingot ingot quality Download PDFInfo
- Publication number
- CN104668526B CN104668526B CN201510109034.9A CN201510109034A CN104668526B CN 104668526 B CN104668526 B CN 104668526B CN 201510109034 A CN201510109034 A CN 201510109034A CN 104668526 B CN104668526 B CN 104668526B
- Authority
- CN
- China
- Prior art keywords
- ingot
- steel
- molten steel
- electrodes
- quality
- 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.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 49
- 239000010959 steel Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000005684 electric field Effects 0.000 claims abstract description 8
- 238000007667 floating Methods 0.000 abstract description 3
- 238000007670 refining Methods 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 description 6
- 230000008023 solidification Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/02—Use of electric or magnetic effects
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Improve the method for steel ingot ingot quality the invention discloses a kind of.Methods described is mainly included in after pouring molten steel terminates, using DC electric field or DC pulse electric field is applied in molten steel of two electrodes in ingot mould, so as to promote to be mingled with floatings, reduce shrinkage cavity and loose, refining grain size and raising ingot quality.
Description
Technical field
The present invention relates to a kind of ingot quality control technology, and in particular to improves steel ingot ingot casting in a kind of During Ingot Solidification
The method of quality
Background technology
The molten steel in ingot mould is poured into, steel ingot shell is initially formed due to the chilling effect of ingot mould.Due to steel ingot
Formation gap hinders the heat transfer between internal molten steel and ingot mould between shell and ingot mould, and makes the solidification speed of internal molten steel
Rate is greatly lowered.For relatively large steel ingot, because the solidification of internal molten steel takes long enough, therefore, internal molten steel
Composition easily produces segregation, non-metallic inclusion aggregation and shrinkage cavity and the defect such as loose.
Due to the Solidification Characteristics of steel ingot, at present, good methods and techniques measure is there is no thoroughly to eliminate ingot solidification
During produced by drawbacks described above.
The content of the invention
The present invention improves the method for ingot quality for above-mentioned the deficiencies in the prior art there is provided a kind of, and this method passes through
DC electric field or DC pulse electric field are imposed in molten steel, so as to promote effective floating of nonmetal inclusion in molten steel, steel is reduced
Ingot internal shrinkage and loose so that ingot quality, which has, to be obviously improved.
The method of the present invention comprises the following steps：After pouring molten steel terminates, steel of two electrodes in ingot mould is utilized
Apply a DC electric field or DC pulse electric field in water, promotion is mingled with floating, reduces shrinkage cavity and loose, refining grain size,
Improve ingot quality.
According to the exemplary embodiment of the present invention, in two electrodes, an electrode can be from the top of ingot mould and molten steel
Contact or be directly inserted into molten steel, wherein it is possible to be used as electricity using the steel same or like with the composition of molten steel
Pole, will not pollute molten steel, and without extracting, or directly can be used ingot mould as electrode；An other electrode can be with
In the side wall for being embedded to steel ingot chassis or ingot mould bottom, or directly chassis or ingot mould can be used as electrode.Wherein,
When using ingot mould simultaneously as two electrodes in use, two electrodes can be two different positions of ingot mould.
According to the present invention exemplary embodiment, can by cable or wire by two electrodes be connected to dc source or
On direct current pulse power source, the output voltage of dc source or direct current pulse power source can be 5V-15V, and current density can be 1.0
×10-5Acm2-1.0×101Acm2。
According to the exemplary embodiment of the present invention, the material of two electrodes can include zirconium oxide, carborundum, carbonization respectively
One or two or more kinds in boron, silicon nitride, zirconium boride, molybdenum, tungsten metal, platinum and steel are applied in combination.
According to the exemplary embodiment of the present invention, the processing time for the processing that is powered can be according to the setting time of steel ingot
It is fixed, typically can be powered on stream in whole process of setting, the distance between two electrodes can depending on the height according to steel ingot,
As long as two electrodes are contacted with the molten steel in ingot mould or solidifying steel.
According to the exemplary embodiment of the present invention, relatively small steel ingot is (for example, weight can be 0.5t to 80t steel
Ingot) setting time is relatively short, therefore relatively large current density can be used (for example, current density can be for
0.5Acm2-10Acm2)；Relatively large steel ingot (for example, weight can be the steel ingot more than 100t) setting time is relatively long,
Therefore relatively small current density can be used (for example, current density can be 1.0 × 10-5Acm2- it is less than 0.5Acm2)。
According to the above method of the present invention, at least one of following technique effect can be obtained：
(1) ingot quality effect is improved notable：Steel ingot field trash is greatly lowered, shrinkage cavity is loose to be reduced, crystal grain refinement；
(2) device is simple, easy to use：Steel ingot need to be only connected with power supply by electrode, be not required to current
Pouring technology does any change, therefore, and implementation process is simple and convenient, and without extra charge.
Embodiment
The example according to the present invention and comparative examples are contrasted below to embody the above-mentioned technique effect of the present invention.Its
In, following example of the invention with comparative examples using 180 tons of steel ingots as objective for implementation, wherein, according to the example of the present invention and
The difference of comparative examples is：Electrode, plus pulse dc power are set in steel ingot top/bottom part according to the example of the present invention, voltage is
30V, current density is 10-2Acm2, processing time is 180min；
Steel ingot takes the steel ingot below rising head at 300mm to carry out low power analysis after solidification cooling.Specific embodiment and result
It is as shown in the table.
As seen from the above table, the method according to the invention can be obviously improved the quality of steel ingot.
Claims (1)
1. a kind of improve the method for steel ingot ingot quality, it is characterised in that after pouring molten steel terminates, using two electrodes in steel
Apply DC electric field or DC pulse electric field in molten steel in ingot mould,
Wherein, two electrodes are connected on dc source or direct current pulse power source by cable or wire, dc source or straight
The output voltage for flowing the pulse power is 5V-15V, and current density is 1.0 × 10-5Acm2-10-2Acm2,
Wherein, an electrode in two electrodes is from the top of ingot mould and steel contacts or is inserted directly into molten steel, in addition
In the side wall of a piece electrode embedment steel ingot chassis or ingot mould bottom, or directly chassis or ingot mould are used as electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510109034.9A CN104668526B (en) | 2015-03-12 | 2015-03-12 | Improve the method for steel ingot ingot quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510109034.9A CN104668526B (en) | 2015-03-12 | 2015-03-12 | Improve the method for steel ingot ingot quality |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104668526A CN104668526A (en) | 2015-06-03 |
| CN104668526B true CN104668526B (en) | 2017-08-08 |
Family
ID=53304401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510109034.9A Expired - Fee Related CN104668526B (en) | 2015-03-12 | 2015-03-12 | Improve the method for steel ingot ingot quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104668526B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105583382B (en) * | 2016-03-07 | 2018-10-02 | 东北大学 | A method of inhibit casting blank foreign matter to be segregated using pulse current |
| CN105779692A (en) * | 2016-03-11 | 2016-07-20 | 东北大学 | Method for controlling size and number of inclusions in molten metal |
| CN110202118A (en) * | 2019-05-20 | 2019-09-06 | 北京科技大学 | The preparation method of carbon ledge cast steel in a kind of vanadium, titanium microalloying |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58197232A (en) * | 1982-05-14 | 1983-11-16 | Hitachi Ltd | Method and device for producing composite steel ingot |
| CN100493770C (en) * | 2005-04-25 | 2009-06-03 | 安徽工业大学 | Method for conticaster controlling solidification structure of casting block |
| CN100418670C (en) * | 2005-09-13 | 2008-09-17 | 鞍钢股份有限公司 | Method of applying electric field energy on molten steel to improve quality of silicon steel billet |
| CN102517417A (en) * | 2011-12-08 | 2012-06-27 | 辽宁科技大学 | Method for removing and controlling foreign substances in metal and alloy |
| CN103436655A (en) * | 2013-05-23 | 2013-12-11 | 沈阳东大高温材料有限公司 | Method for removing and refining inclusion and bubble from molten metal |
-
2015
- 2015-03-12 CN CN201510109034.9A patent/CN104668526B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104668526A (en) | 2015-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104668526B (en) | Improve the method for steel ingot ingot quality | |
| CN110144472B (en) | Vacuum induction melting method of manganese-copper vibration-damping alloy | |
| CN100509214C (en) | Process for preparing large cast steel support roller | |
| Yin et al. | Effect of electrodes and thermal insulators on grain refinement by electric current pulse | |
| CN103436655A (en) | Method for removing and refining inclusion and bubble from molten metal | |
| CN104259441A (en) | Method for casting large-sized steel ingot with internally arranged cold core and top arranged electromagnetic field | |
| CN108568514A (en) | A kind of devices and methods therefor controlling vacuum induction melting field trash and slag inclusion | |
| CN202779642U (en) | Combined dual-purpose electroslag consumable electrode steel die | |
| CN102409187A (en) | Method and equipment for preparing semi-solid metal slurry/blank with current | |
| CN108941485B (en) | Casting mold and method for large alloy steel ingot | |
| CN102747244A (en) | Method for compound modification refining of aluminum alloy cast structure | |
| CN104907540A (en) | Method for electro slag liquid state pouring continuous casting billet with molten steel flow divider | |
| CN204035524U (en) | A kind of device preparing high purity copper and copper alloy casting ingot | |
| CN104357673A (en) | Method for remelting and smelting metal electro slag | |
| CN109158555B (en) | Casting method for improving material consumption rate of 06Cr18Ni11Ti steel ingot | |
| CN203869502U (en) | Segregation furnace | |
| JP2012166979A (en) | Electromagnetic casting method and electromagnetic casting apparatus of polycrystalline silicon | |
| CN102605189B (en) | Method for preparing copper and copper-alloy cast ingots by electroslag refining technology | |
| CN102398005B (en) | Built-in type electromagnetic stirring device and application method thereof | |
| CN202517019U (en) | Crystallizer for up casting | |
| CN205851797U (en) | A kind of electric arc heated equipment manufacturing cast steel roll | |
| CN103949617A (en) | Device and method for preparing high-purity copper and copper alloy ingot | |
| CN107552770A (en) | A kind of automatic feeding technology of large flat ingot casting | |
| CN109014085B (en) | Pouring method of titanium alloy steel ingot | |
| CN102847917A (en) | Method for variable speed crystal pulling of ultrathin narrow-chord long allowance-free directional working blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170808 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |