CN106521090A - Solid calcium metal, rare earth-barium-molybdenum-containing titanium nitride and silicon alloy composite core-spun yarn - Google Patents
Solid calcium metal, rare earth-barium-molybdenum-containing titanium nitride and silicon alloy composite core-spun yarn Download PDFInfo
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- CN106521090A CN106521090A CN201611017067.1A CN201611017067A CN106521090A CN 106521090 A CN106521090 A CN 106521090A CN 201611017067 A CN201611017067 A CN 201611017067A CN 106521090 A CN106521090 A CN 106521090A
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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
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
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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
- C21C7/0006—Adding metallic additives
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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Abstract
The invention relates to an alloy core-spun yarn, and concretely relates to a solid calcium metal, rare earth-barium-molybdenum-containing titanium nitride and silicon alloy composite core-spun yarn. The alloy core-spun yarn comprises a core layer and a steel skin layer wrapped outside the core layer, a steel/iron-made netted supporting layer is arranged between the core layer and the steel skin layer, the core layer comprises a titanium nitride and silicon alloy powder layer, a middle protection layer and a solid metal calcium wire, the solid metal calcium wire is wrapped by the middle protection layer, the middle protection layer is wrapped by the titanium nitride and silicon alloy powder layer, a mass ratio of the solid metal calcium wire to the titanium nitride and silicon alloy powder layer is 1:(2-5), and the titanium nitride and silicon alloy powder layer is a rare earth-barium-molybdenum-containing titanium nitride and silicon alloy powder with the particle size of 3 mm or less. The alloy and calcium are added to microalloyed steel through a core-spun yarn technology, so the alloy core-spun yarn obtained in the invention solves the problem of low recovery rate, has a higher yield than routine solid metal calcium wires, has a long preservation time, has a stable yield and has substantial economic benefit.
Description
Technical field
The present invention relates to a kind of alloy claded wire.
Background technology
China is big steel country, but the ratio shared by the quantity and kind of high-quality steel is less, can not only meet China Jing
Ji builds the requirement with national defense construction, and the waste of resource is quite serious, and the cost for causing smelting iron and steel is continuously increased.Solution
Certainly the fundamental way of the problems referred to above is, the novel metallurgical subject micro-alloying technology occurred using 20 century 70s, that is, exist
Micro (0.001%-0.1%) alloying element is added in steel, just can be to the performance of steel (such as high intensity, high tenacity, good solderable
Property and corrosion resistance) reach significant improvement, while saving valuable alloying element, with reduces cost, this is traditional iron and steel
Produce the important symbol to modern production conversion.After the nineties in 20th century, the main iron and steel manufacturing country of China and the world is made in succession
Development plan that is fixed and implementing New Generation Steel PRODUCTION TRAITS, super fine organization, high-cleanness, high, high evenness micro alloyed steel into
For the Main Trends of The Development of ferrous materials.At present, micro alloyed steel accounts for the total ratio most of steel, and world average level is about 15%,
Industrialized country reaches 30%, and China is less than 5%, therefore China's urgent need micro-alloying technology transforms the original low-alloy of China
High-strength steel system, and micro alloyed steel kind and the Iron ＆ Steel Material of New Generation that exploitation is badly in need of is combined with controlled rolling and controlled cooling.
Core-spun yarn is to be intended to add molten steel or the various additives (deoxidizer, desulfurizing agent, alterant, alloy etc.) in iron liquid
Certain granularity is broken into, is then included for a composite with random length with cold-rolled low carbon steel band.Cored
Line technology is a kind of external refining means for growing up on the basis of spraying metallurgy technology the eighties.Core-spun yarn is applied to steel-making
And casting.Steel inclusion morphology can be purified for steel-making, molten steel castability is improved, improved the performance of steel, and significantly can carry
Low alloy-consumption, drops in heavy alloyed recovery rate, reduces steel-making cost, remarkable in economical benefits.
Titanium silicon nitride core-spun yarn is new composite core-spun yarn in screw-thread steel wire production.Add from the refine later stage, can
The recovery rate of nitrogen in steel titanium is improved, other ferroalloy consumptions is reduced, with significant economic benefit.Due to titanium silicon nitride alloy
Proportion kicks the beam（In titanium silicon nitride alloy, iron content is lower than ferro-titanium by more than 30%）, in adition process, swim in molten steel surface
And combined with slag and be oxidized, cause the recovery rate of titanium relatively low（Average out to 27%）, Ti content 0.0038% in steel do not reach matter
Amount internally controlling requirement.And titanium silicon nitride alloy is fed in steel by the form of core-spun yarn at Argon station, on the one hand can be that alloy is fast
Speed enters molten steel, it is to avoid alloy is aoxidized by slag in molten steel；It is on the other hand, low through the molten steel oxidation of furnace rear deoxidation treatment,
The scaling loss of titanium can be reduced, so as to improve and stablize the response rate of the titanium in steel.
Calcium treatment is the required technique of current special steel smelting, 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 the outer concise skill of stove of the metallurgical effects such as nonmetal inclusion degeneration
Art.Due to the fusing point of calcium metal it is low（838℃）, boiling point is also low（1450℃）, the dissolubility very little in molten steel（When 1600 DEG C,
It is 0.03% when calcium vapour pressure is 0.186MPa）, the density of calcium also very little（1.55g/cm3）, in adding molten steel, easily float to steel
On slag surface with air in oxygen and in slag liquid oxide reaction and scaling loss is fallen.Therefore generally use the core-spun yarn containing calcium metal such as
CaSi core-spun yarns（Ca28%～32%）Or cafe core-spun yarns（Ca about 30%, Fe about 70%）, and molten metal will be added to as far as possible when processing
Deep, using the static pressure of molten metal, make calcium before calcium bubble is become 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% or so, substantial amounts of metal
Calcium all unnecessary wastes.Find through substantial amounts of research, by powder（Silicon calcium powder or calcium metal, iron powder）The core-spun yarn of composition is entered
After ladle, softened in the presence of high temperature, even if higher wire-feeding velocity, core-spun yarn cannot also penetrate high-temperature molten steel entrance
Deep, is located at the top of molten steel, it is easy to which scaling loss is fallen to slag surface to form calcium bubble floating mostly.
The application for a patent for invention of applicant's application（Application number：201510160282.6, applying date 2015.04.07）It is open
A kind of titanium silicon nitride core-spun yarn, including sandwich layer and the sheetmetal layer being wrapped in outside the sandwich layer, the sandwich layer is titanium silicon nitride
Alloy-layer, is provided with mesh-supported layer made by steel or ferrum between the sandwich layer and sheetmetal layer, the titanium silicon nitride alloy-layer is by grain
Footpath is constituted for the titanium silicon nitride alloying pellet of below 3mm.Carbon or nitrogen in the Ti of the invention and steel forms size for nano level
Compound, they are best to the thinning effect organized, and improve the intensity of ferrous materials, and nitrogen pick-up improves the stability of TiN granules, more
Austenite Grain Growth is prevented effectively.Cheap nitrogen is made full use of, in the case where certain intensity level is ensured, titanium can be saved
Addition, further reduce non-hardened and tempered steel cost.
The content of the invention
It is an object of the invention to provide a kind of solid calcium metal and contain rare earth, barium, molybdenum titanium silicon nitride alloy compound core-spun
Line, is added to alloy and calcium in micro alloyed steel by the method using core-spun yarn and can not only solve that the response rate is low to ask
Topic, while higher than conventional solid metal calcium line recovery rate, the holding time is longer, the more stable advantage of recovery rate, has
Significant economic benefit.
In order to realize above-mentioned purpose, following technical scheme is present invention employs：
A kind of solid calcium metal and contain rare earth, barium, molybdenum titanium silicon nitride alloy composite core-spun yarn, the core-spun yarn includes sandwich layer and bag
The sheetmetal layer being rolled in outside the sandwich layer, is provided with mesh-supported layer made by steel or ferrum, the sandwich layer between sandwich layer and sheetmetal layer
Including titanium silicon nitride alloyed powder last layer, intermediate protective layer and real core metal calcium line, real core metal calcium line is wrapped up by intermediate protective layer,
Titanium silicon nitride alloyed powder last layer wraps up intermediate protective layer, and real core metal calcium line is 1 with the mass ratio of titanium silicon nitride alloyed powder last layer:
2 ~ 5, it is below 3mm containing rare earth, barium, molybdenum titanium silicon nitride alloy powder that described titanium silicon nitride alloyed powder last layer is particle diameter；Contain
Rare earth, barium, molybdenum titanium silicon nitride alloy powder are made up of elements below component by mass percentage：
Al 1.0 ~ 2.5%,
N 10 ~ 25%,
Mn 2.5 ~ 5.0%,
Mg 1.0 ~ 2.5%,
Ti 25 ~ 40%,
Si 25 ~ 35%,
Ca 5 ~ 10%,
Mo 0.5 ~ 1.0%,
Ba 0.5 ~ 1.0%,
Rare earth element 1.0 ~ 2.0%,
P≤0.1%,
S ≤0.1%；
Fe surpluses.
Preferably, containing rare earth, barium, molybdenum titanium silicon nitride alloy powder by mass percentage by elements below component structure
Into：
Al 1.5 ~ 2.0%,
N 15 ~ 20%,
Mn 3.0 ~ 4.0%,
Mg 1.5 ~ 2.0%,
Ti 30 ~ 35%,
Si 30 ~ 35%,
Ca 5 ~ 10%,
Mo 0.5 ~ 1.0%,
Ba 0.5 ~ 1.0%,
Rare earth element 1.0 ~ 2.0%,
P ≤0.1%
S ≤0.1%；
Fe surpluses.
Preferably, the granularity containing rare earth, barium, molybdenum titanium silicon nitride alloy powder is 0.1 ~ 2.0mm.
The present invention chooses each component raw material and smelts in a vacuum furnace.Under certain process conditions, nitrogenized, made nitridation
Reach optimum efficiency（Regulation content）, then pour into ingot casting.The broken essence of ingot casting Jing is overmolding to diameter into certain particle size using iron sheet
For 13 millimeters of core-spun yarn.This kind of core-spun yarn was inserted in molten steel with certain payingoff speed in the refine later stage, and in final steel, Ti contains
Amount averagely reaches the recovery rate average 60% of average 55%, the Si of the response rate of 0.008%, Ti.
Using intermediate protective layer（Box hat）, nexine reality core metal calcium line special construction 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 bubble is become, greatly improves calcium metal recovery rate；It is golden in addition
The specific surface area of category calcium is substantially reduced, therefore reduces 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 be stablized.
It is composite core-spun yarn new during iron and steel is produced using solid calcium metal titanium silicon nitride alloyed powder composite core-spun yarn,
Add from the refine later stage, the recovery rate of nitrogen in steel titanium silicon can be improved, other ferroalloy consumptions are reduced, with significant economic effect
Benefit.Its reason is that Ti and carbon or nitrogen in steel form size for nano level compound, and they are strong to having grown up for crystal grain
Inhibition, and the volume fraction shared by this nano level compound be 2% when, to organize thinning effect it is best.Ca
Improve the form of field trash and the clarity of distribution cleaning molten steel, improve the quality of steel, mobile performance and the steel of molten steel can be improved
Quality.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.It is multiple
Close using Ca, Ba deoxidation, its product can form polynary mutual solution, reduce activity and the fusing point of deoxidation productss.Ba can play rush
Enter the effect of Ca, be conducive to deoxidation to carry out, make molten steel purifying effect more preferably, be conducive to steel inclusion aggregation to float.It is compound to make
With Ca, Ba deoxidation, composite oxides of the product for low melting point, steel inclusion aggregation is conducive to float.And can reduce
The activity of deoxidation productss and fusing point, are conducive to deoxidation to carry out, and make molten steel purifying effect more preferable.Rare earth element refers to the periodic table of elements
15 lanthanide series of the middle atomic number for 57-71.These elements are all metals, but their oxide is much like " soil ", so
Traditionally claim rare earth.Rare earth is added in steel, thus it is possible to vary the composition of steel inclusion, form, distribution and property, so as to improve
The various performances of steel, such as toughness, weldability, cold-forming property.
Alloyed powder of the present invention is added to by using the method for core-spun yarn in micro alloyed steel, with it is following the characteristics of：
1) when preventing soaking, austenite crystal grows up：It is when the micro alloyed steels such as Ti are heated with soaking before forging or rolling, not molten
The migration of the microalloy carbonitride Pinning austenite grain boundary of solution, prevents its crystal grain from growing up, thus makes micro alloyed steel in pressure
Just possess less austenite crystal before power processing, favourable condition is provided for further fining ferrite grains.
2) austenite recrystallization is prevented during ausforming：During ausforming, analysed by strain inducing
After the carbonitride precipitates of the Ti for going out can suppress deformed austeaite recrystallization and recrystallize, crystal grain is grown up, and plays crystal grain thinning
Effect.Because the carbonitride particle preferential precipitation of the microalloy element of strain induced precipitate is in austenite crystal in hot procedure
On boundary, sub boundary and dislocation line, so as to the motion for effectively preventing crystal boundary, sub boundary and dislocation, its effect can not only be prevented
The beginning of recrystallization process, and the carrying out of recrystallization process can also be suppressed.
3) precipitation enhancement after ferrite transformation：After ausforming, ferrite transformation will occur, at this moment will have big
The disperse microalloy carbonitride particle of amount is separated out, and these particles for separating out equally also play pinning effect to ferrite crystal grain, limit
Make which to grow up.On the other hand, these particles also play precipitation enhancement, improve the intensity of ferrous materials.
4）The size and its volume fraction of microalloy Carbonitride Precipitation particle plays a decisive role to ferrite grain size,
Precipitation particles is less, and volume fraction is bigger, and the ferrite crystal grain for being obtained is also less.Thus, effort has precipitation particles
Larger volume fraction and less size are the big targets in grain refinement process, while and invention direction.Adding
While entering these rare elements, while nitrogen pick-up, because changing Ti after nitrogen pick-up in alternate distribution, promotes Ti (C, N
) separate out, it is obviously reduced the particle size of precipitated phase, so as to enhance the precipitation enhancement of titanium, increases substantially steel
Intensity.Nitrogen is separated out by promoting Ti (C, N), and effectively pinning austenite ferrite crystal boundary, has refined ferrite brilliant
Grain.Nitrogen pick-up may additionally facilitate the formation of Intragranular Acicular Ferrite, further refine ferritic structure.To Trace Titanium Treatment non-hardened and tempered steel,
Nitrogen pick-up improves the stability of TiN granules, more effectively prevents Austenite Grain Growth.Cheap nitrogen is made full use of,
Ensure, under certain intensity level, the addition of vanadium can be saved, further reduce the cost of non-hardened and tempered steel.
Specific embodiment
Embodiment 1
A kind of solid calcium metal and contain rare earth, barium, molybdenum titanium silicon nitride alloy composite core-spun yarn, the core-spun yarn includes sandwich layer and bag
The sheetmetal layer being rolled in outside the sandwich layer, is provided with mesh-supported layer made by steel or ferrum, the sandwich layer between sandwich layer and sheetmetal layer
Including titanium silicon nitride alloyed powder last layer, intermediate protective layer and real core metal calcium line, real core metal calcium line is wrapped up by intermediate protective layer,
Titanium silicon nitride alloyed powder last layer wraps up intermediate protective layer, and real core metal calcium line is 1 with the mass ratio of titanium silicon nitride alloyed powder last layer:
3, it is below 3mm containing rare earth, barium, molybdenum titanium silicon nitride alloy powder that described titanium silicon nitride alloyed powder last layer is particle diameter；
It is made up of elements below component containing rare earth, barium, molybdenum titanium silicon nitride alloy powder by mass percentage：
Al 2.0%,
N 20%,
Mn 4.0%,
Mg 2.0%,
Ti 30%,
Si 35%,
Ca 5%,
Mo 1.0%,
Ba 1.0%,
Rare earth element 1.0%,
P≤0.1%,
S ≤0.1%；
Fe surpluses.
This kind of core-spun yarn was inserted in molten steel with certain payingoff speed in the refine later stage, and in final steel, Ti contents averagely reach
The recovery rate average 60% of average 55%, the Si of the response rate of 0.008%, Ti, after line feeding, the recovery rate of Ca is more stable, averagely receives
Rate is 30%, average desulfurization degree 26%, highest desulfurization degree 33%, minimum sulfur content 0.006%, and average DNA vaccine 20% is minimum
Oxygen content 0.00082%, after line feeding, pouring molten steel is normal, and slab quality is good, shows solid calcium metal cored wire of the present invention also
Inclusion modification can be promoted, molten steel is purified and improved pouring molten steel performance, and can eliminate in tundish and casting process
Nozzle clogging phenomenon.
Embodiment 2
A kind of solid calcium metal and contain rare earth, barium, molybdenum titanium silicon nitride alloy composite core-spun yarn, the core-spun yarn includes sandwich layer and bag
The sheetmetal layer being rolled in outside the sandwich layer, is provided with mesh-supported layer made by steel or ferrum, the sandwich layer between sandwich layer and sheetmetal layer
Including titanium silicon nitride alloyed powder last layer, intermediate protective layer and real core metal calcium line, real core metal calcium line is wrapped up by intermediate protective layer,
Titanium silicon nitride alloyed powder last layer wraps up intermediate protective layer, and real core metal calcium line is 1 with the mass ratio of titanium silicon nitride alloyed powder last layer:
3, it is below 3mm containing rare earth, barium, molybdenum titanium silicon nitride alloy powder that described titanium silicon nitride alloyed powder last layer is particle diameter；
It is made up of elements below component containing rare earth, barium, molybdenum titanium silicon nitride alloy powder by mass percentage：
Al 1.0%,
N 15%,
Mn 4.0%,
Mg 1.0%,
Ti 25%,
Si 25%,
Ca 5%,
Mo 1.0%,
Ba 1.0%,
Rare earth element 1.0%,
P≤0.1%,
S ≤0.1%；
Fe surpluses.
This kind of core-spun yarn was inserted in molten steel with certain payingoff speed in the refine later stage, and in final steel, Ti contents averagely reach
The recovery rate average 60% of average 55%, the Si of the response rate of 0.008%, Ti, after line feeding, the recovery rate of Ca is more stable, averagely receives
Rate is 30%, average desulfurization degree 26%, highest desulfurization degree 33%, minimum sulfur content 0.006%, and average DNA vaccine 20% is minimum
Oxygen content 0.00082%, after line feeding, pouring molten steel is normal, and slab quality is good, shows solid calcium metal cored wire of the present invention also
Inclusion modification can be promoted, molten steel is purified and improved pouring molten steel performance, and can eliminate in tundish and casting process
Nozzle clogging phenomenon.
Embodiment 3
A kind of solid calcium metal and contain rare earth, barium, molybdenum titanium silicon nitride alloy composite core-spun yarn, the core-spun yarn includes sandwich layer and bag
The sheetmetal layer being rolled in outside the sandwich layer, is provided with mesh-supported layer made by steel or ferrum, the sandwich layer between sandwich layer and sheetmetal layer
Including titanium silicon nitride alloyed powder last layer, intermediate protective layer and real core metal calcium line, real core metal calcium line is wrapped up by intermediate protective layer,
Titanium silicon nitride alloyed powder last layer wraps up intermediate protective layer, and real core metal calcium line is 1 with the mass ratio of titanium silicon nitride alloyed powder last layer:
3, it is below 3mm containing rare earth, barium, molybdenum titanium silicon nitride alloy powder that described titanium silicon nitride alloyed powder last layer is particle diameter；
It is made up of elements below component containing rare earth, barium, molybdenum titanium silicon nitride alloy powder by mass percentage：
Al 2.5%,
N 25%,
Mn 2.5%,
Mg 2.0%,
Ti 30%,
Si 28%,
Ca 10%,
Mo 1.0%,
Ba 1.0%,
Rare earth element 1.0%,
P≤0.1%,
S ≤0.1%；
Fe surpluses.
This kind of core-spun yarn was inserted in molten steel with certain payingoff speed in the refine later stage, and in final steel, Ti contents averagely reach
The recovery rate average 60% of average 55%, the Si of the response rate of 0.008%, Ti, after line feeding, the recovery rate of Ca is more stable, averagely receives
Rate is 30%, average desulfurization degree 26%, highest desulfurization degree 33%, minimum sulfur content 0.006%, and average DNA vaccine 20% is minimum
Oxygen content 0.00082%, after line feeding, pouring molten steel is normal, and slab quality is good, shows solid calcium metal cored wire of the present invention also
Inclusion modification can be promoted, molten steel is purified and improved pouring molten steel performance, and can eliminate in tundish and casting process
Nozzle clogging phenomenon.
Claims (3)
1. a kind of solid calcium metal and contain rare earth, barium, molybdenum titanium silicon nitride alloy composite core-spun yarn, it is characterised in that the core-spun yarn
Including sandwich layer and the sheetmetal layer being wrapped in outside the sandwich layer, mesh-supported made by steel or ferrum between sandwich layer and sheetmetal layer, is provided with
Layer, the sandwich layer include titanium silicon nitride alloyed powder last layer, intermediate protective layer and real core metal calcium line, and real core metal calcium line is by centre
Protective layer is wrapped up, and titanium silicon nitride alloyed powder last layer wraps up intermediate protective layer, real core metal calcium line and titanium silicon nitride alloyed powder last layer
Mass ratio be 1:2 ~ 5, it is below 3mm containing rare earth, barium, molybdenum titanium silicon nitride that described titanium silicon nitride alloyed powder last layer is particle diameter
Alloy powder, is made up of elements below component by mass percentage containing rare earth, barium, molybdenum titanium silicon nitride alloy powder：
Al 1.0 ~ 2.5%,
N 10 ~ 25%,
Mn 2.5 ~ 5.0%,
Mg 1.0 ~ 2.5%,
Ti 25 ~ 40%,
Si 25 ~ 35%,
Ca 5 ~ 10%,
Mo 0.5 ~ 1.0%,
Ba 0.5 ~ 1.0%,
Rare earth element 1.0 ~ 2.0%,
P≤0.1%,
S ≤0.1%；
Fe surpluses.
2. a kind of solid calcium metal according to claim 1 and contain rare earth, barium, molybdenum titanium silicon nitride alloy compound core-spun
Line, it is characterised in that be made up of elements below component containing rare earth, barium, molybdenum titanium silicon nitride alloy powder by mass percentage：
Al 1.5 ~ 2.0%,
N 15 ~ 20%,
Mn 3.0 ~ 4.0%,
Mg 1.5 ~ 2.0%,
Ti 30 ~ 35%,
Si 30 ~ 35%,
Ca 5 ~ 10%,
Mo 0.5 ~ 1.0%,
Ba 0.5 ~ 1.0%,
Rare earth element 1.0 ~ 2.0%,
P ≤0.1%
S ≤0.1%；
Fe surpluses.
3. a kind of solid calcium metal according to claim 1 and 2 and containing rare earth, barium, the compound bag of molybdenum titanium silicon nitride alloy
Heart yearn, it is characterised in that the granularity containing rare earth, barium, molybdenum titanium silicon nitride alloy powder is 0.1 ~ 2.0mm.
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| CN201611017067.1A CN106521090A (en) | 2016-11-19 | 2016-11-19 | Solid calcium metal, rare earth-barium-molybdenum-containing titanium nitride and silicon alloy composite core-spun yarn |
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| CN201611017067.1A CN106521090A (en) | 2016-11-19 | 2016-11-19 | Solid calcium metal, rare earth-barium-molybdenum-containing titanium nitride and silicon alloy composite core-spun yarn |
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|---|---|---|---|---|
| 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 |
| CN204174226U (en) * | 2012-09-10 | 2015-02-25 | 上海盛宝冶金科技有限公司 | A kind of calcium heart yearn of multilayered structure |
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