CN106399637A - Composite cored wire comprising solid calcium metal, silicon iron and magnesium-rare earth alloy containing multiple elements - Google Patents
Composite cored wire comprising solid calcium metal, silicon iron and magnesium-rare earth alloy containing multiple elements Download PDFInfo
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- CN106399637A CN106399637A CN201611017071.8A CN201611017071A CN106399637A CN 106399637 A CN106399637 A CN 106399637A CN 201611017071 A CN201611017071 A CN 201611017071A CN 106399637 A CN106399637 A CN 106399637A
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- rare earth
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- 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
- C21C7/06—Deoxidising, e.g. killing
-
- 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
- C21C7/0006—Adding metallic additives
-
- 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
- C21C7/064—Dephosphorising; Desulfurising
- C21C7/0645—Agents used for dephosphorising or desulfurising
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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
The invention relates to an alloy cored wire, in particular to a composite cored wire comprising solid calcium metal, silicon iron and magnesium-rare earth alloy containing multiple elements. The outer layer of the cored wire is a common steel belt with the thickness of 0.3-0.5 mm. A core layer comprises a rare earth-magnesium alloy powder layer, an intermediate protective layer and a solid calcium metal wire. The solid calcium metal wire is wrapped by the intermediate protective layer. The intermediate protective layer is wrapped by the rare earth-magnesium alloy powder layer. The rare earth-magnesium alloy powder layer comprises silicon iron powder and rare earth-magnesium alloy powder. The mass ratio of the solid calcium metal wire to the silicon iron powder to the rare earth-magnesium alloy powder is 1:1-2:1-5. The granularity of the silicon iron powder and the rare earth-magnesium alloy powder is smaller than 3 mm. By means of the way that the cored wire is added into microalloyed steel, the calcium and magnesium treating process is stable, the high absorption rate is obtained, and existing problems are well solved. In addition, the composite cored wire has the advantages that storage time is longer and the yield is more stable, and has remarkable economic benefits.
Description
Technical field
The present invention relates to a kind of alloyed powder core-spun yarn.
Background technology
China's steel industry is in summit period in history, it is contemplated that China's year output of steel is up in the coming years
1800000000 tons, core-spun yarn market is up to more than 5,000,000,000 yuan.Counted according to IISI, the steel of countries in the world in 2011 always produces
Amount reaches 1,600,000,000 tons, amplification 15%；And China continues to hold a post or title the first in the world with 700,000,000 tons of yield, in addition, with scientific and technical continuous
Progressive, various Structural Designs increasingly tend to high parameter, lightweight and maximization, to the desired strength of ferrous materials performance more
High, toughness is more excellent, and core-spun yarn wire feeding process technology plays indispensable very important effect to this.
Obtain more high cleanliness, the product of more high uniformity is the focus that current iron and steel produces and studies, and is also metallurgical skill
The developing direction of art.With regard to current production specifications, the control of impurity content in steel has reached higher level (in steel
Total impurities:S+P+N+H+T O≤100 × 10-6), and the reduction further with impurity content in molten steel, press from both sides in steel
The harmful effect effect that debris produce to steel products just becomes apparent from, and therefore, the different quality according to product requires to control
Just it is particularly important with the character improving steel inclusion.
The most typical, inclusions class technology that is being most widely used is the Calcium treatment of Al deoxidization steel.Calcium treatment can
So that Al2O3 in steel is mingled with the composite oxides being transformed into low melting point, is conducive to its polymerization to grow up and excludes from molten steel, not only
Can freeze anti-waterstop port, and the quantity that in steel, oxide is mingled with can be reduced；Meanwhile, it is trapped in its shape of field trash in steel
Shape is almost circular and is irregularly distributed in steel, can mitigate the harm to Steel Properties.But the problem that Calcium treatment exists
It is：Although the quantity that in steel, oxide is mingled with can be greatly reduced, often size ratio is larger for the field trash that left behind, by
It is unlikely to deform in CaO Al2O3 field trash, in the operation of rolling, micro-crack, cavity can be formed along deformation direction around field trash,
Lead to a series of deterioration of performances of steel.Particularly those have the steel grade of rigors for fatigue behaviour, aborning then not
Permission adopts Calcium treatment.The pure product made from steel requiring for higher quality, finds new inclusion modification means, to mitigate and to disappear
Except the harm caused by aluminium deoxidation steel inclusion, have become as a problem in the urgent need to address during steel products produce.
At a temperature of steel-making, magnesium not only has a fabulous affinity with oxygen and sulfur, but also have extremely strong to field trash shape
State and the control ability of size.For Al deoxidization steel, magnesium processes while reducing the dissolved oxygen in steel further, can be by steel
In Al2O3 be mingled with and be changed into dystectic MgO Al2O3, because it is existed with solid-state in molten steel, there is no the mistake that polymerization is grown up
Journey, therefore, the size that its oxide is mingled with can be very tiny, and Dispersed precipitate is in steel.Research shows MgO present in steel
Al2O3 is mingled with size and can control within 5 μm, and the mechanical property of steel is had no adverse effect substantially.Equally, add magnesium in steel to exist
While reducing sulfur content further, sulfide in steel is made presented in tiny MgS or MgS-MnS, to mitigate because of MnS folder
The miscellaneous impact that Steel Properties are brought.
Although adopting the advantage that magnesium is processed very prominent on molten steel, due to magnesium elements own characteristic（Low melting point, 650
℃；Low boiling, 1080 DEG C；High vapour pressure, is more than 2.0Mpa during 1600 DEG C of temperature of steel-making）, there is no effective magnesium addition side
Before method, in steelmaking process, molten steel is carried out with magnesium process and also there is very big difficulty.
Calcium treatment is the required technique of special steel smelting at present, and molten steel Calcium treatment is will with injection metallurgical method or injection feeding technology
Calcium metal or alloy add molten steel deep, reach deoxidation, desulfurization, make concise skill outside the stove of the metallurgical effects such as nonmetal inclusion degeneration
Art.Because the fusing point of calcium metal is low（838℃）, boiling point is also low（1450℃）, dissolubility very little in molten steel（When 1600 DEG C,
Calcium vapour pressure is for being 0.03% during 0.186MPa）, the density also very little of calcium（1.55g/cm3）, add in molten steel and easily float to steel
React and scaling loss is fallen with the oxide in the oxygen of in the air and slag liquid on slag surface.Therefore generally use core-spun yarn containing calcium metal such as
CaSi core-spun yarn（Ca28%～32%）Or cafe core-spun yarn（Ca about 30%, Fe about 70%）, and molten metal to be added to when processing as far as possible
Deep, using the static pressure of molten metal, make calcium before becoming calcium bubble i.e. with steel in oxygen, sulfur etc. react, be unlikely to one plus
Enter to reform into calcium bubble floating to lose.Even so, the recovery rate of calcium metal still only has 7～18% about, substantial amounts of metal
Calcium all unnecessary waste.Find through substantial amounts of research, by powder（Silicon calcium powder or calcium metal, iron powder）The core-spun yarn of composition enters
After ladle, softened in the presence of high temperature, even if higher wire-feeding velocity, core-spun yarn also cannot penetrate high-temperature molten steel and enter
Deep, to slag surface, scaling loss is fallen it is easy to form calcium bubble floating to be mostly located at the top of molten steel.
Content of the invention
It is an object of the invention to provide a kind of solid calcium metal, ferrosilicon and the magnesium-rare earth alloy containing multiple element is compound
Core-spun yarn, can make calcium, magnesium processing procedure steadily and obtain by being added in micro alloyed steel using the method for core-spun yarn
Higher absorption rate, makes current problems faced preferably be solved.And, the holding time is longer, more stable excellent of recovery rate
Point, has significant economic benefit.
In order to realize above-mentioned purpose, present invention employs following technical scheme：
The composite core-spun yarn of a kind of solid calcium metal, ferrosilicon and the magnesium-rare earth alloy containing multiple element, this core-spun yarn outer layer is
0.3-0.5 millimeters thick ordinary steel belts, sandwich layer includes magnesium-rare earth powder bed, intermediate protective layer and real core metal calcium line, real core
Metal calcium line is wrapped up by intermediate protective layer, and magnesium-rare earth powder bed wraps up intermediate protective layer, and magnesium-rare earth powder bed includes
Silicon iron powder and magnesium-rare earth powder, the mass ratio of real core metal calcium line, silicon iron powder and magnesium-rare earth powder is 1:1~
2：1:~ 5, described silicon iron powder, the granularity of magnesium-rare earth powder are less than 3mm, magnesium-rare earth powder by mass percentage
It is made up of elements below component：
Mg 10 ~ 20%,
Ca 0.5 ~ 2.5%,
Al 1.0 ~ 2.5%,
Si 25 ~ 35%,
Ti 1 ~ 2.5%,
Ba 0.5 ~ 3.5%,
Mn 2.5 ~ 5.0%,
Nb 0.5 ~ 1.0%,
V 0.5 ~ 1.0%,
Rare earth element 1.0 ~ 5.0%,
P≤0.1%,
S ≤0.1%；
Fe surplus.
Preferably, magnesium-rare earth powder is made up of elements below component by mass percentage：
Mg 12 ~ 15%,
Ca 1.0 ~ 2.0%,
Al 1.5 ~ 2.0%,
Si 28 ~ 32%,
Ti 1.5 ~ 2.0%,
Ba 1.0 ~ 3.0%,
Mn 3.0 ~ 4.0%,
Nb 0.5 ~ 1.0%,
V 0.5 ~ 1.0%,
Rare earth element 1.0 ~ 5.0%,
P≤0.1%,
S ≤0.1%；
Fe surplus.
Preferably, the granularity of magnesium-rare earth powder is 0.1 ~ 2.0mm.
The present invention add aluminum can crystal grain thinning, improve impact flexibility.Aluminum also has non-oxidizability and a corrosion resistance, aluminum with
Chromium, silicon share, and are remarkably improved the high temperature non-scale performance of steel and the ability of high-temperature corrosion resistance.Manganese is added not only to have enough tough
Property, and have higher intensity and hardness, improve the quenching property of steel, improve the hot-working character of steel.Titanium is added to make the interior tissue of steel
Densification, crystal grain thinning power；Reduce aging sensitivity and cold brittleness.The vanadium Jia 0.5% in steel can thinning microstructure crystal grain, improve intensity
And toughness.The carbide that vanadium is formed with carbon, can improve hydrogen attack resistance at high temperature under high pressure.Niobium energy crystal grain thinning and reduction steel
Superheated susceptivity and temper brittleness, improve intensity, but plasticity and toughness have declined.Add niobium in ordinary low-alloy steel, can
Improve resistant to hydrogen, nitrogen, ammonia corrosion ability under weather-resistant and high temperature.Niobium can improving welding property.
Ba is active element, it is possible to decrease inclusion content in melting steel content, increased the flowing of molten steel, makes molten steel more uniform.
Compound use Ca, Ba deoxidation, its product can form polynary mutual solution, reduces activity and the fusing point of deoxidation productss.Ba can play
Promote the effect of Ca, be conducive to deoxidation to carry out, make molten steel purifying effect more preferably, be conducive to steel inclusion to assemble and float.Compound
Using Ca, Ba deoxidation, product is the composite oxides of low melting point, is conducive to steel inclusion to assemble and floats.And can drop
The activity of low deoxidation productss and fusing point, are conducive to deoxidation to carry out, and make molten steel purifying effect more preferable.
The present invention is applied to core-spun yarn.Outer layer is 0.3-0.5 millimeters thick ordinary steel belts, and center portion is magnesium-rare earth powder,
The marginal powder layer being to have heat insulating function.Magnesium core spun yarn using said structure can be by adjusting powder
The thickness of layer and physical property, to adjust its heat-conducting effect, thus adjusting the temperature of magnesium heart yearn during wire feeding process, prevent it from shifting to an earlier date
Fusing vaporization, to reach the purpose that magnesium is sent into molten steel desired depth, thus can make magnesium processing procedure steadily and obtain relatively
High-absorbility, makes current problems faced preferably be solved.Processed using rare earth magnesium core spun yarn, plus magnesium process ratio adopts
Steadily, magnesium can effectively add in molten steel ordinary construction core-spun yarn containing magnesium, and obtains more stable recovery rate.Through magnesium
After process, steel inclusion type, form and size significant change.Large-sized Al2O3 is mingled with and is changed into tiny MgO
Al2O3, makes MnS in steel be mingled with presented in tiny MgS or MgS-MnS simultaneously.By using rare earth magnesium core-spun yarn
Method adding magnesium can not only solve the problems, such as that the response rate is low, but also solve the problems, such as plus magnesium during the big rolling of molten steel, open
Send out the application of rare earth magnesium core-spun yarn, there is significant economic benefit.
Using intermediate protective layer（Box hat）, the special construction of nexine reality core metal calcium line is so that the elevated temperature strength of core-spun yarn
Greatly improve, greatly improve the penetration capacity of core-spun yarn so that calcium metal can veritably be added to molten steel deep, using steel
Hydrostatic, is made calcium metal be reacted with oxygen, sulfur etc. in steel before becoming bubble, greatly improves calcium metal recovery rate；In addition gold
Belong to calcium specific surface area be substantially reduced, therefore reduce the gasification rate of calcium metal, increased calcium metal by molten steel absorb when
Between, thus the higher response rate can be obtained in molten steel and stablize.
Specific embodiment
Embodiment 1
The composite core-spun yarn of a kind of solid calcium metal, ferrosilicon and the magnesium-rare earth alloy containing multiple element, this core-spun yarn outer layer is
0.3-0.5 millimeters thick ordinary steel belts, sandwich layer includes magnesium-rare earth powder bed, intermediate protective layer and real core metal calcium line, real core
Metal calcium line is wrapped up by intermediate protective layer, and magnesium-rare earth powder bed wraps up intermediate protective layer, and magnesium-rare earth powder bed includes
Silicon iron powder and magnesium-rare earth powder, the mass ratio of real core metal calcium line, silicon iron powder and magnesium-rare earth powder is 1: 2：
3, described silicon iron powder, the granularity of magnesium-rare earth powder are less than 3mm, and magnesium-rare earth powder is by following by mass percentage
Elemental constituent constitute：
Mg 10%,
Ca 2.0%,
Al 1.5%,
Si 25%,
Ti 2.0%,
Ba 3.0%,
Mn 4.0%,
Nb 1.0%,
V 0.5%,
Rare earth element 2.0%,
P≤0.1%,
S ≤0.1%；
Fe surplus.
This kind of core-spun yarn was inserted in molten steel with certain payingoff speed in the refine later stage, the response rate average 35% of Mg, fed
After line, the recovery rate of Ca is more stable, and average recovery rate is 30%, average desulfurization degree 26%, highest desulfurization degree 33%, low-sulfur
Content 0.006%, average DNA vaccine 20%, minimum oxygen content 0.00082%, after line feeding, pouring molten steel is normal, and slab quality is good
Good, show that solid calcium metal cored wire of the present invention can also promote inclusion modification, purify molten steel and improve pouring molten steel performance,
And the nozzle clogging phenomenon in tundish and casting process can be eliminated.And only have during line feeding a small amount of splash and
Calcium treatment flue dust, the advantage that disclosure satisfy that the environmental protection steel-making requirements of current steel mill.
Embodiment 2
The composite core-spun yarn of a kind of solid calcium metal, ferrosilicon and the magnesium-rare earth alloy containing multiple element, this core-spun yarn outer layer is
0.3-0.5 millimeters thick ordinary steel belts, sandwich layer includes magnesium-rare earth powder bed, intermediate protective layer and real core metal calcium line, real core
Metal calcium line is wrapped up by intermediate protective layer, and magnesium-rare earth powder bed wraps up intermediate protective layer, and magnesium-rare earth powder bed includes
Silicon iron powder and magnesium-rare earth powder, the mass ratio of real core metal calcium line, silicon iron powder and magnesium-rare earth powder is 1: 1：
2, described silicon iron powder, the granularity of magnesium-rare earth powder are less than 3mm, and magnesium-rare earth powder is by following by mass percentage
Elemental constituent constitute：
Mg 15%,
Ca 2.5%,
Al 2.0%,
Si 30%,
Ti 25%,
Ba 2.0%,
Mn 3.0%,
Nb 1.0%,
V 0.5%,
Rare earth element 2.0%,
P≤0.1%,
S ≤0.1%；
Fe surplus.
This kind of core-spun yarn was inserted in molten steel with certain payingoff speed in the refine later stage, the response rate average 35% of Mg, fed
After line, the recovery rate of Ca is more stable, and average recovery rate is 30%, average desulfurization degree 26%, highest desulfurization degree 33%, low-sulfur
Content 0.006%, average DNA vaccine 20%, minimum oxygen content 0.00082%, after line feeding, pouring molten steel is normal, and slab quality is good
Good, show that solid calcium metal cored wire of the present invention can also promote inclusion modification, purify molten steel and improve pouring molten steel performance,
And the nozzle clogging phenomenon in tundish and casting process can be eliminated.And only have during line feeding a small amount of splash and
Calcium treatment flue dust, the advantage that disclosure satisfy that the environmental protection steel-making requirements of current steel mill.
Embodiment 3
The composite core-spun yarn of a kind of solid calcium metal, ferrosilicon and the magnesium-rare earth alloy containing multiple element, this core-spun yarn outer layer is
0.3-0.5 millimeters thick ordinary steel belts, sandwich layer includes magnesium-rare earth powder bed, intermediate protective layer and real core metal calcium line, real core
Metal calcium line is wrapped up by intermediate protective layer, and magnesium-rare earth powder bed wraps up intermediate protective layer, and magnesium-rare earth powder bed includes
Silicon iron powder and magnesium-rare earth powder, the mass ratio of real core metal calcium line, silicon iron powder and magnesium-rare earth powder is 1: 2：
4, described silicon iron powder, the granularity of magnesium-rare earth powder are less than 3mm, and magnesium-rare earth powder is by following by mass percentage
Elemental constituent constitute：
Mg 18%,
Ca 1.5%,
Al 2.0%
Si 30%,
Ti 1.5%,
Ba 2.5%,
Mn 3.0%,
Nb 1.0%,
V 0.5%,
Rare earth element 2.0%,
P≤0.1%,
S ≤0.1%；
Fe surplus.
This kind of core-spun yarn was inserted in molten steel with certain payingoff speed in the refine later stage, the response rate average 35% of Mg, fed
After line, the recovery rate of Ca is more stable, and average recovery rate is 30%, average desulfurization degree 26%, highest desulfurization degree 33%, low-sulfur
Content 0.006%, average DNA vaccine 20%, minimum oxygen content 0.00082%, after line feeding, pouring molten steel is normal, and slab quality is good
Good, show that solid calcium metal cored wire of the present invention can also promote inclusion modification, purify molten steel and improve pouring molten steel performance,
And the nozzle clogging phenomenon in tundish and casting process can be eliminated.And only have during line feeding a small amount of splash and
Calcium treatment flue dust, the advantage that disclosure satisfy that the environmental protection steel-making requirements of current steel mill.
Claims (3)
1. the composite core-spun yarn of a kind of solid calcium metal, ferrosilicon and the magnesium-rare earth alloy containing multiple element is it is characterised in that be somebody's turn to do
Core-spun yarn outer layer is 0.3-0.5 millimeters thick ordinary steel belts, and sandwich layer includes magnesium-rare earth powder bed, intermediate protective layer and real core gold
Belong to calcium line, real core metal calcium line is wrapped up by intermediate protective layer, magnesium-rare earth powder bed wraps up intermediate protective layer, magnesium-rare earth
Powder bed includes silicon iron powder and magnesium-rare earth powder, the matter of real core metal calcium line, silicon iron powder and magnesium-rare earth powder
Amount ratio is 1:1~2：1:~ 5, described silicon iron powder, the granularity of magnesium-rare earth powder are less than 3mm, rare earth by mass percentage
Magnesium alloy powder is made up of elements below component：
Mg 10 ~ 20%,
Ca 0.5 ~ 2.5%,
Al 1.0 ~ 2.5%,
Si 25 ~ 35%,
Ti 1 ~ 2.5%,
Ba 0.5 ~ 3.5%,
Mn 2.5 ~ 5.0%,
Nb 0.5 ~ 1.0%,
V 0.5 ~ 1.0%,
Rare earth element 1.0 ~ 5.0%,
P≤0.1%,
S ≤0.1%；
Fe surplus.
2. a kind of solid calcium metal according to claim 1, ferrosilicon and the magnesium-rare earth alloy containing multiple element is compound
Core-spun yarn is it is characterised in that magnesium-rare earth powder is made up of elements below component by mass percentage：
Mg 12 ~ 15%,
Ca 1.0 ~ 2.0%,
Al 1.5 ~ 2.0%,
Si 28 ~ 32%,
Ti 1.5 ~ 2.0%,
Ba 1.0 ~ 3.0%,
Mn 3.0 ~ 4.0%,
Nb 0.5 ~ 1.0%,
V 0.5 ~ 1.0%,
Rare earth element 1.0 ~ 5.0%,
P≤0.1%,
S ≤0.1%；
Fe surplus.
3. a kind of solid calcium metal according to claim 1 and 2, ferrosilicon and the answering of magnesium-rare earth alloy containing multiple element
Close core-spun yarn it is characterised in that the granularity of magnesium-rare earth powder is 0.1 ~ 2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611017071.8A CN106399637A (en) | 2016-11-19 | 2016-11-19 | Composite cored wire comprising solid calcium metal, silicon iron and magnesium-rare earth alloy containing multiple elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611017071.8A CN106399637A (en) | 2016-11-19 | 2016-11-19 | Composite cored wire comprising solid calcium metal, silicon iron and magnesium-rare earth alloy containing multiple elements |
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| CN106399637A true CN106399637A (en) | 2017-02-15 |
Family
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| CN201611017071.8A Withdrawn CN106399637A (en) | 2016-11-19 | 2016-11-19 | Composite cored wire comprising solid calcium metal, silicon iron and magnesium-rare earth alloy containing multiple elements |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022211641A1 (en) * | 2021-03-30 | 2022-10-06 | Elkem Asa | Ferrosilicon vanadium and/or niobium alloy, production of a ferrosilicon vanadium and/or niobium alloy, and the use thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5340615A (en) * | 1976-09-27 | 1978-04-13 | Sumitomo Metal Ind Ltd | Steel nitriding agent |
| CN1313408A (en) * | 2000-12-12 | 2001-09-19 | 北京正大银光科技有限公司 | Si-Mg alloy cored wine |
| CN101875994A (en) * | 2010-03-31 | 2010-11-03 | 湖北猴王焊材有限公司 | Novel weathering resistant steel microalloying compound core-spun yarn |
| CN102851446A (en) * | 2012-09-10 | 2013-01-02 | 上海盛宝冶金科技有限公司 | Multilayer-structured calcium-core wire, and manufacturing method and purpose thereof |
| CN203820835U (en) * | 2013-12-25 | 2014-09-10 | 辽宁东戴河新区佳联科技有限公司 | Composite cored wire |
-
2016
- 2016-11-19 CN CN201611017071.8A patent/CN106399637A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5340615A (en) * | 1976-09-27 | 1978-04-13 | Sumitomo Metal Ind Ltd | Steel nitriding agent |
| CN1313408A (en) * | 2000-12-12 | 2001-09-19 | 北京正大银光科技有限公司 | Si-Mg alloy cored wine |
| CN101875994A (en) * | 2010-03-31 | 2010-11-03 | 湖北猴王焊材有限公司 | Novel weathering resistant steel microalloying compound core-spun yarn |
| CN102851446A (en) * | 2012-09-10 | 2013-01-02 | 上海盛宝冶金科技有限公司 | Multilayer-structured calcium-core wire, and manufacturing method and purpose thereof |
| CN203820835U (en) * | 2013-12-25 | 2014-09-10 | 辽宁东戴河新区佳联科技有限公司 | Composite cored wire |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022211641A1 (en) * | 2021-03-30 | 2022-10-06 | Elkem Asa | Ferrosilicon vanadium and/or niobium alloy, production of a ferrosilicon vanadium and/or niobium alloy, and the use thereof |
| TWI825639B (en) * | 2021-03-30 | 2023-12-11 | 挪威商艾爾坎股份有限公司 | Ferrosilicon vanadium and/or niobium alloy, production of a ferrosilicon vanadium and/or niobium alloy, and the use thereof |
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Application publication date: 20170215 |