CN106834601A - For the line of refining molten metal - Google Patents
For the line of refining molten metal Download PDFInfo
- Publication number
- CN106834601A CN106834601A CN201610004030.9A CN201610004030A CN106834601A CN 106834601 A CN106834601 A CN 106834601A CN 201610004030 A CN201610004030 A CN 201610004030A CN 106834601 A CN106834601 A CN 106834601A
- Authority
- CN
- China
- Prior art keywords
- line
- refining
- metal
- core
- sheath
- 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.)
- Pending
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Classifications
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Line the present invention relates to be used for refining molten metal.Motlten metal refining line 11 includes the metal sheath 12 of encapsulation core 14, and core 14 includes conched material and ferrous metal.
Description
The present invention relates to be used to be melted with additive such as metal material and/or mineral refining (refine)
The correlation technique of line as the line (wire) of metal, and manufacture.
Before motlten metal such as molten steel (molten steel) of casting, refining line can be injected into
Molten metal container such as ladle (ladle), tank or continuous casting production (continuous casting tundish)
In, there is the metal of the characteristic for improving to provide.The purpose for refining line is when conched material is compared to molten
Melt metal show to the high-affinity or low melting point and/or low evaporating point or vapor pressure of oxygen or
During the combination of low-solubility or low-density or these factors, the conched material in online sheath will be encapsulated
Such as metal and/or mineral are with accurate amount and are injected into motlten metal in a controlled fashion.With regard to this
For a bit, realize the definition of high percentage for remain to the quantity of material of injection in motlten metal divided by
The rate of recovery of the conched material of the ratio of total quantity of material of injection is important.
In the known method of manufacture refining line, roll steel bar to be formed filled with the essence in powder type
The U-shaped section of refining material.Then two longitudinal edges in U-shaped bar section are hooked in together, and the two are indulged
It has been that the effect is pre-folded to edge.By this way, refining line is formed with encapsulation refining material
The steel sheath of the core of material.
Another method of manufacture refining line is same as above, except conched material is used as solid extruded threads
Outside being introduced in U-shaped section.
Due to manufacturing and producing constraint, the refining line produced by these known methods generally has 0.2
Sheath thickness in the scope of mm to 0.6mm.Therefore, line can be by for passing through guiding tube by line
The high pressure of the charger pinch roll being injected into molten metal container and be easily deformed, so as to need tool
There is the guiding tube of sizable internal diameter, this is unfavorable for accurately guiding refining line into container.
Sometimes refining line is also insufficient to rigidity and such as melts permeating floating motlten metal in a reservoir
The surface of the solidification of the slag on the surface of steel.
Additionally, the hook closure (hook-type closure) of the steel sheath discussed above for line is not permitted
Perhaps such line is reached deep down into rolling or is dragged to less diameter, in this case, core may
Comprising excess and an undesirable amount of air, this is unfavorable for motlten metal during refining process
The rate of recovery of quality and core material.Additionally, conched material can be with air or other materials such as water
Divide or the component of oxidant interacts, thus reduce the storage period of line.
Some of these shortcomings are partly caused by following facts：The steel sheath for refining line is too thin, and
Secondly, the conched material of encapsulation is sealed in sheath without (fluid-tight manner) in fluid-tight manner.
In our patent application for being published as WO2006/079832, it is proposed that to prior art
The solution of the shortcoming that refining line is faced.In this application, it is more than 0.6mm it is proposed that having
Sheath thickness and the conched material with theory 95% or bigger density core refining line.
In the patent application being indicated above, we disclose calcium, aluminium or nickel or its combination；Or calcium-silicon is closed
Gold, iron-titanium alloy, iron-boron alloy or its combination as conched material purposes.Preferred refining material
Material is powdered calcium.Silicon can also be added to conched material.In some refining lines, we use silicon
The mixture of powder and calcium powder.
Our refining line is very suitable for that conched material can be made to be added to receiving in a reservoir simultaneously
Motlten metal in (or even in the case where the surface of melt has molten slag layer thereon), work as calcium
When (or other conched materials) are put into the lower face of melt, it may be difficult to prevent calcium (or other essence
Refining material) reactivity.This can cause at the surface of melt or towards the anti-of the surface of melt
Or should interact (such as violent reaction or interaction) and/or can cause lower than optimum recovery rate
The rate of recovery.
It is an object of the present invention to provide overcoming or at least generally reduce and known essence discussed above
The refining line of the related shortcoming of refining line.
Therefore, the first aspect of the present invention provides a kind of motlten metal refining line, and it includes encapsulation refining
The metal sheath of the core of material, its SMIS is sealed in intrathecal in fluid-tight manner and its SMIS includes iron gold
Category.
We are surprisingly, it was found that by ferrous metal (for ferrous metal, we mean that unalloyed iron)
The activity that in-core prevents conched material is included in, for example, it is allowed to which conched material further infiltrates into melting
In metal.
Ferrous metal may be constructed the 10-90w/w% of core, i.e. so that conched material for example constitutes core
90-10w/w%.
Although the amount of conched material can be reduced by using ferrous metal, it is believed that refining material
The overall recovery of material is enhanced due to the presence of iron.
Then shockingly, refining line can be manufactured more economically on, while not damaging performance.
Iron preferably mixed before it is introduced in sheath with conched material.Core can include iron and refining
The mixture of material, preferably uniform or at least substantial uniform mixture.
The second aspect of the present invention is to manufacture the method that motlten metal refines line, the motlten metal essence
Refining line includes the metal sheath of the core of encapsulation conched material, and its SMIS is encapsulated in intrathecal in fluid-tight manner, and
And its SMIS is formed by making ferrous metal mix with conched material.
The third aspect of the present invention is to manufacture the method that motlten metal refines line, the motlten metal essence
Refining line includes the metal sheath of the core of encapsulation conched material, and the method includes making bonding jumper be formed as having envelope
The sheath of the mixture loaded on conched material therein and ferrous metal, and by longitudinal edge or be thusly-formed
Sheath seal.
In the either side of the inventive method defined above, sheath can also be by any suitable metal
Material is made, but when refining line is used for refining molten steel, sheath is preferably low-carbon (LC), low-silicon steel.
In addition, the preferably jam weld of the edge of sheath is together, and two longitudinal edges can be with liquid
Close mode is sealed.Although it is less preferable, we surprisingly, it was found that including
The core of the mixture of ferrous metal (such as, with 10-90w/w%) and refined metals can be efficiently used for
In crease refining line.
The core of the encapsulation of conched material can be any conjunction for refining molten metal such as molten steel
Suitable material, such material includes pure calcium or silicon, aluminium or nickel metal or its any combinations；Calcium
- silicon alloy (CaSi), iron-titanium alloy (FeTi), iron-niobium alloy (FeNb), iron-boron alloy (FeB) or its
Any combinations, such as mixing or single calcium powder and silica flour；And other.
Therefore, because refining line sheath is preferably sealed such as welding, preferably jam weld, to press
Fluid tight manner encapsulates the conched material of core, therefore compared to other known refining line 0.6mm most
Big sheath thickness, it is possible to achieve the sheath thickness of at most 2.0mm.We have found that, with from 5mm
Line to the external diameter of 20mm is probably preferred.Most preferably have from 9mm to 15mm
The line of external diameter, and at least some of embodiment, with the external diameter from 10mm to 14mm
Line be best.We have found that, the external diameter from 10mm to 14mm (has from 0.6mm
Sheath thickness to 2mm, preferably from 0.6mm to 1.5mm) adding in cost, intensity and material
In addition the balance aspect between is particularly useful.
In order to reduce the oxygen being retained in the sheath of the line being thusly-formed, air or other pernicious gases,
Line can deeply roll or tow to less diameter, so as to gas as being discharged from line, and nothing
Damage in its integrality, while also tending to make sheath more tightly be closed around core.In this way it is possible to
Achieve over the 95% of theoretical reality core equivalent core conched material apparent density ratio.
The method that the fourth aspect of the present invention provides refining molten metal, including by of the invention the
The refining line of one side is manufactured according to the second aspect of the present invention defined above or the third aspect
Line is injected into motlten metal.
Used as ferrous metal component, we use powdered iron at preference.It is highly preferred that powdered iron has
(fall from the number average particle size and/or preferably more than 50% particle of 0-1mm from the granularity of 0-1mm
In entering the scope of granularity 0-1mm).
Iron powder can have less than 4kg/dm3, be, for example, less than 4kg/dm3, less than 3kg/dm3, be less than
2kg/dm3And preferably less than 1.5kg/dm3Bulk density.In one embodiment, iron powder
With about 1.4kg/dm3Bulk density.Even if iron powder can have relatively low bulk density (with iron
Solid density be 7.86g/cm3Compared to), but it is easily compressible after mixing with conched material
's.Therefore, as method (such as the WO2006/079832) using prior art, iron powder and refining
The mixture of material can be compressed into high density (compared with theory).
Preferably, iron powder is generally pure, it means that impurity can be preferably small less than 5%
In 4%, 3%, 2%, 1%.
Although we be both not intended to or be not intended to be bound by any theory, it is believed that comprising iron powder
With two effect uniques.First is diluent that iron powder serves as conched material, it means that work as line
When being put in melt, there is the less conched material for contacting in per unit length, and
Therefore there is relatively mild reaction/interaction between melt and core.Second is that iron serves as radiating
Device, also ensures that less stringent reaction.Two effects will be rendered as causing higher time of conched material
Yield.
In order to the present invention can be more fully understood by, now by only by way of example and with reference to institute
Attached embodiment and accompanying drawing describe refining line of the invention, in the accompanying drawings：
Fig. 1 is the cross section of the First Line for refining molten steel of the invention；
Fig. 2 is the second-line section for refining molten steel of the invention.
With reference first to the refining line as indicated in Fig. 1 substantially 1, including formed via steel bar
Steel sheath 2, the longitudinal edge of steel bar has each bent to the form of hook 3.Steel bar will be also curved
It is bent into U-shaped for powdered refining material 4 is accommodated therein.Two previously folded edges 3
Then it is hooked in together so that conched material 4 is encapsulated in sheath 2 as core.
As discussed above, because hook closure is not suitably sealed, that is to say, that it is not
Liquid-tight, thus deeply roll or tow line 1 be it is impossible, and air there is likely to be in
In conched material 4.When refining line is injected into molten steel, undesirable oxygen is unfavorable for
The quality of molten steel and it is unfavorable for the rate of recovery of core material 4.However, we surprisingly, it was found that
The rate of recovery of conched material can be by mixing into mixture the iron powder of 10-90v/v% to form essence
The core of refining material 4 improves.
Referring now to Fig. 2, closed line of the invention 11 is shown, wherein steel sheath 12 is via
The steel bar for being shaped generally as U-shaped is formed, and the conched material of core is provided in steel bar.
With discussed above for Fig. 1 first refining line 1 formed compare, sheath 12 in face of or abut
Longitudinal edge 15 be sealed in fluid type mode by welding.Therefore, this is thusly-formed
Weld seam 13 is to seal, be encapsulated in the core 14 of line 11 in sheath 12 by fluid tight manner, thus reduces any
Undesirable oxygen or other gases or material are during motlten metal refining process into sheath 12
Internal possibility and it is preferably prevented from any undesirable oxygen or other gases or material exists
Into the inside of sheath 12 between motlten metal refining process.
In addition, if line 11 is rolled or pulled diametrically being reached deep down into, then it is present in sheath 12
Any air, oxygen or other gases can reduce by by it from the discharge of sheath inside.This also inclines
To in making sheath 12 more tightly be closed around core 14.
There is provided following examples with illustrate it is of the invention it is preferred melting steel refining line composition and
Size, the steel that its mesotheca is made from it is the steel of SAE 1006 or its equivalent, and the external diameter of each line is
13.0mm。
In each case, the iron powder for using has following characteristic：
Bulk density：1.4kg/dm3
Purity：99.4% (CIt is maximum0.011%, PIt is maximum0.1%, SIt is maximum0.01,OIt is maximum0.13%, MnIt is maximum0.18%)
Granularity：0–1mm
Embodiment 1
Following mixture is manufactured based on w/w：
Calcium powder 40%
Iron powder 50%
Silica flour 10%
Mixture processes to form the sheath thickness with 1mm according to the teaching of WO2006/079832
Refining line.
The density of conched material is 252g/m (in theory about 97%).
The line being thusly-formed is used in the refining of steel and shows the good rate of recovery of conched material.
Embodiment 2
Manufacture following mixture：
Calcium powder 52.5%
Iron powder 25%
Silica flour 22.5%
Mixture processes thick to form the sheath with 1.5mm according to the teaching of WO2006/079832
The refining line of degree.
The density of conched material is 159g/m (in theory about 95%).
The line being thusly-formed is used in the refining of steel and shows the good rate of recovery of conched material.
Embodiment 3
Manufacture following mixture：
Calcium powder 80%
Iron powder 20%
Mixture processes thick to form the sheath with 1.0mm according to the teaching of WO2006/079832
The refining line of degree.
The density of conched material is 171g/m (in theory about 98%).
The line being thusly-formed is used in the refining of steel and shows the good rate of recovery of conched material.
Embodiment 4
Manufacture following mixture：
Calcium powder 20%
Iron powder 30%
Silica flour 50%
Mixture processes thick to form the sheath with 1.0mm according to the teaching of WO2006/079832
The refining line of degree.
The density of conched material is 234g/m (in theory about 96%).
The line being thusly-formed is used in the refining of steel and shows the good rate of recovery of conched material.
Depending on the operating condition of refinery practice, deeply roll or tow line is for providing small diameter
What line was commonly necessary, more tightly closed around core while also tending to sheath is made.
Thus it can be seen that the present invention provides the refining line for improving metal refining techniques, especially
Be particularly refining line be fed to molten metal container and refine line through swim in melting gold
To between motlten metal mid-term, refining line is reduced and is injected into motlten metal slag penetration on metal surface
Impurity, while keeping its general integrity.
Also as sheath is sealed and with regular, continuous, substantially smooth periphery, sheath can be easy
Ground deeply roll or tow to less diameter and without detriment to its integrality, while also by air, oxygen
Or any other undesirable gas is discharged from sheath inside.
And, refining line is deeply rolled or towed to less diameter and can provide and remains above theory
The apparent density or the core material of compression ratio of the 95% of real core equivalent.
Claims (15)
1. a kind of metal sheath of motlten metal refining line, including encapsulation core, the core includes refining material
Material and ferrous metal.
2. line according to claim 1, wherein the ferrous metal constitutes the core
10-90w/w%.
3. line according to claim 1 and 2, wherein the ferrous metal is powdered.
4. the line according to any one of claim 1,2 or 3, wherein the ferrous metal is powder
Last shape and with the granularity from 0mm to 1mm.
5. the line according to any preceding claims, wherein the conched material is selected from pure calcium
Or silicon, aluminium or nickel metal or its any combinations；Calcium-silicon alloy (CaSi), iron-titanium alloy (FeTi), iron-
Niobium alloy (FeNb), iron-boron alloy (FeB) or its any combinations.
6. the line according to any preceding claims, wherein the conched material include calcium powder and/
Or silica flour.
7. the line according to any preceding claims, wherein the conched material is by calcium and/or silicon
Composition.
8. the line according to any preceding claims, wherein the core have in theory 95% or
Bigger density.
9. the line according to any preceding claims, wherein the iron is distributed in the whole essence
It is as the same in refining material or vice versa.
10. the line according to any preceding claims, wherein the sheath have from 0.6mm to
The thickness of 2.0mm.
11. line according to any preceding claims, wherein the external diameter of the line be from 5mm to
20mm, preferably from 9mm to 15mm, and most preferably from 10mm to 14mm.
A kind of 12. methods for manufacturing motlten metal refining line, the motlten metal refining line includes encapsulation
The metal sheath of the core of conched material, wherein the core is encapsulated in the intrathecal, and its in fluid-tight manner
Described in core formed by the way that ferrous metal is mixed with conched material.
A kind of 13. methods for manufacturing motlten metal refining line, the motlten metal refining line includes encapsulation
The metal sheath of the core of conched material, methods described includes making bonding jumper be formed as therein with being packaged in
The sheath of the mixture of conched material and ferrous metal, and longitudinal edge or the sheath being thusly-formed are sealed
Come.
14. methods according to claim 13, including by the ferrous metal and the refining material
Material mixes to provide uniform core.
A kind of 15. methods of refining molten metal, including will be according to any one of claim 1 to 11
The refining line of formation is injected into motlten metal according to the line that any one of claim 12 to 14 is manufactured
In.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1521518.9 | 2015-12-07 | ||
| GBGB1521518.9A GB201521518D0 (en) | 2015-12-07 | 2015-12-07 | Wire for refining molten metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106834601A true CN106834601A (en) | 2017-06-13 |
Family
ID=55234496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610004030.9A Pending CN106834601A (en) | 2015-12-07 | 2016-01-04 | For the line of refining molten metal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106834601A (en) |
| GB (1) | GB201521518D0 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024127033A1 (en) | 2022-12-16 | 2024-06-20 | Injection Alloys Limited | Wire for refining molten metal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2477648Y (en) * | 2001-04-29 | 2002-02-20 | 武汉钢铁(集团)公司 | Core-spun yarn |
| CN1884589A (en) * | 2006-06-28 | 2006-12-27 | 宁俊才 | Production method of ferro-calcium core-spun yarn molten steel deoxidizing agent |
| CN101111324A (en) * | 2005-01-28 | 2008-01-23 | 注射器合金有限公司 | Wire for refining molten metal and associated method of manufacture |
| CN103115920A (en) * | 2013-01-25 | 2013-05-22 | 内蒙古包钢钢联股份有限公司 | Method for measuring iron/calcium ratio in iron-calcium core-spun yarn |
-
2015
- 2015-12-07 GB GBGB1521518.9A patent/GB201521518D0/en not_active Ceased
-
2016
- 2016-01-04 CN CN201610004030.9A patent/CN106834601A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2477648Y (en) * | 2001-04-29 | 2002-02-20 | 武汉钢铁(集团)公司 | Core-spun yarn |
| CN101111324A (en) * | 2005-01-28 | 2008-01-23 | 注射器合金有限公司 | Wire for refining molten metal and associated method of manufacture |
| CN1884589A (en) * | 2006-06-28 | 2006-12-27 | 宁俊才 | Production method of ferro-calcium core-spun yarn molten steel deoxidizing agent |
| CN103115920A (en) * | 2013-01-25 | 2013-05-22 | 内蒙古包钢钢联股份有限公司 | Method for measuring iron/calcium ratio in iron-calcium core-spun yarn |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024127033A1 (en) | 2022-12-16 | 2024-06-20 | Injection Alloys Limited | Wire for refining molten metal |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201521518D0 (en) | 2016-01-20 |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170613 |
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| RJ01 | Rejection of invention patent application after publication |