CN106480254A - A kind of solid calcium metal and contain rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloyed powder composite core-spun yarn - Google Patents
A kind of solid calcium metal and contain rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloyed powder composite core-spun yarn Download PDFInfo
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- CN106480254A CN106480254A CN201611017029.6A CN201611017029A CN106480254A CN 106480254 A CN106480254 A CN 106480254A CN 201611017029 A CN201611017029 A CN 201611017029A CN 106480254 A CN106480254 A CN 106480254A
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- 239000011575 calcium Substances 0.000 title claims abstract description 62
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 58
- 229910052581 Si3N4 Inorganic materials 0.000 title claims abstract description 56
- 239000000843 powder Substances 0.000 title claims abstract description 51
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 50
- 239000002184 metal Substances 0.000 title claims abstract description 50
- 239000010955 niobium Substances 0.000 title claims abstract description 40
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 36
- 229910052758 niobium Inorganic materials 0.000 title claims abstract description 33
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 title claims abstract description 33
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 32
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910052796 boron Inorganic materials 0.000 title claims abstract description 30
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 30
- WKORWMLYJIMJKA-UHFFFAOYSA-N [Si][Ti][Ti] Chemical compound [Si][Ti][Ti] WKORWMLYJIMJKA-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 239000007787 solid Substances 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 79
- 239000010959 steel Substances 0.000 claims abstract description 79
- 239000010410 layer Substances 0.000 claims abstract description 75
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 claims abstract description 34
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 25
- 239000000956 alloy Substances 0.000 claims abstract description 25
- 239000011241 protective layer Substances 0.000 claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 15
- 239000010936 titanium Substances 0.000 claims description 35
- 239000000470 constituent Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 10
- 230000004044 response Effects 0.000 abstract description 8
- 229910000742 Microalloyed steel Inorganic materials 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 24
- 229910052719 titanium Inorganic materials 0.000 description 17
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 14
- 229910052757 nitrogen Inorganic materials 0.000 description 14
- 239000013078 crystal Substances 0.000 description 13
- 229910052742 iron Inorganic materials 0.000 description 10
- 229910000859 α-Fe Inorganic materials 0.000 description 9
- 229910001566 austenite Inorganic materials 0.000 description 8
- 238000006477 desulfuration reaction Methods 0.000 description 7
- 230000023556 desulfurization Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 238000005266 casting Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 238000005275 alloying Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000001953 recrystallisation Methods 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 108010041986 DNA Vaccines Proteins 0.000 description 3
- 229940021995 DNA vaccine Drugs 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000011863 silicon-based powder Substances 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910001021 Ferroalloy Inorganic materials 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910004709 CaSi Inorganic materials 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- -1 alterant Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
-
- B22F1/0003—
-
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The present invention relates to a kind of alloy claded wire.A kind of solid calcium metal and contain rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloyed powder composite core-spun yarn; this core-spun yarn includes sandwich layer and is wrapped in the sheetmetal layer outside described sandwich layer; it is provided with the mesh-supported layer that steel or ferrum are made between sandwich layer and sheetmetal layer; described sandwich layer includes 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, described titanium silicon nitride alloyed powder last layer is below 3mm containing rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloy powder for particle diameter.Can not only solve the problems, such as that the response rate is low by alloy and calcium being added in micro alloyed steel using the method for core-spun yarn, simultaneously higher than conventional solid metal calcium line recovery rate, holding time is longer, the more stable advantage of recovery rate, has significant 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 of high-quality steel and kind is less, not only can not meet China's warp
Ji builds the requirement with national defense construction, and the waste of resource is quite serious, and the cost 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 being 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, save valuable alloying element, with reduces cost, this is traditional iron and steel simultaneously
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, the micro alloyed steel of high evenness become
Main Trends of The Development for ferrous materials.At present, micro alloyed steel accounts for the total ratio of steel, and world average level is about 15%,
Industrialized country reaches 30%, and China is less than 5%, and 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 the various additives (deoxidizer, desulfurizing agent, alterant, alloy etc.) in molten steel or iron liquid
It is broken into certain granularity, 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 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, improve molten steel castability, improve the serviceability of steel, and can significantly 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.Addition from the refine later stage, can
Improve the recovery rate of nitrogen in steel titanium, reduce other ferroalloy consumptions, there is significant economic benefit.Due to titanium silicon nitride alloy
Proportion kicks the beam（Lower by more than 30% than ferro-titanium containing iron content in rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloy）, adding
Cheng Zhong, is swum in molten steel surface and is combined with slag oxidized, causes the recovery rate of titanium relatively low（Average out to 27%）, in steel, titanium contains
Amount 0.0038%, does not reach internal quality control requirement.And contain rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloy at Argon station by bag
In the form feeding steel of heart yearn, on the one hand can be that alloy rapidly enters molten steel, it is to avoid alloy is aoxidized by slag in molten steel；Another
Aspect is low through the molten steel oxidation of furnace rear deoxidation treatment, it is possible to reduce the scaling loss of titanium, thus improving and stablizing titanium in steel
The response rate.
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.
The application for a patent for invention of applicant's application（Application number：201510160282.6, applying date 2015.04.07）Open
A kind of titanium silicon nitride core-spun yarn, including sandwich layer be wrapped in sheetmetal layer described sandwich layer outside, described sandwich layer is titanium silicon nitride
Alloy-layer, is provided with the mesh-supported layer that steel or ferrum are made, described titanium silicon nitride alloy-layer is by grain between described sandwich layer and sheetmetal layer
Footpath is the titanium silicon nitride alloying pellet composition of below 3mm.Carbon in the Ti of this invention and steel or nitrogen form a size of nano level
Compound, they are best to the thinning effect of tissue, improve the intensity of ferrous materials, nitrogen pick-up improves the stability of TiN granule, more
Effectively stop Austenite Grain Growth.Make full use of cheap nitrogen, under ensureing certain intensity level, titanium can be saved
Addition, further reduce non-hardened and tempered steel cost.
Content of the invention
It is an object of the invention to provide a kind of solid calcium metal and contain rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloyed powder
Composite core-spun yarn, can not only solve the response rate by alloy and calcium being added in micro alloyed steel using the method for core-spun yarn
Low problem, simultaneously higher than conventional solid metal calcium line recovery rate, 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：
A kind of solid calcium metal and contain rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloyed powder composite core-spun yarn, this core-spun yarn bag
The sheetmetal layer including sandwich layer and being wrapped in outside described sandwich layer, is provided with the mesh-supported that steel or ferrum are made between sandwich layer and sheetmetal layer
Layer, described sandwich layer includes 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 wraps 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, described titanium silicon nitride alloyed powder last layer is below 3mm containing rare earth, niobium, vanadium, the high titanium of boron for particle diameter
Titanium silicon nitride alloy powder；
Described containing rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloy powder by mass percentage by elements below component structure
Become：
Al 1.0 ~ 2.5%,
N 5 ~ 15%,
Mn 2.5 ~ 5.0%,
Mg 1.0 ~ 2.5%,
Ti 40 ~ 60%,
Si 35 ~ 50%,
Nb 0.5 ~ 1.0%,
V 0.5 ~ 1.0%,
B 0.5 ~ 1.0%,
Rare earth element 1.0 ~ 2.0%,
P≤0.1%,
S ≤0.1%；
Fe surplus.
Preferably, containing rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloy powder by mass percentage by elements below
Component is constituted：
Al 1.5 ~ 2.0%,
N 8 ~ 12%,
Mn 3.0 ~ 4.0%,
Mg 1.5 ~ 2.0%,
Ti 45 ~ 55%,
Si 40 ~ 45%,
Nb 0.5 ~ 1.0%,
V 0.5 ~ 1.0%,
B 0.5 ~ 1.0%,
Rare earth element 1.0 ~ 2.0%,
P≤0.1%,
S ≤0.1%；
Fe surplus.
It is 0.1 ~ 2.0mm as the preferably granularity containing rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloy powder.
The present invention chooses sponge iron and titanium sponge and ferrosilicon and ferromanganese is smelted in a vacuum furnace.In certain process conditions
Under, nitrogenized, make nitridation reach optimum efficiency（Regulation content）, then pour into ingot casting.Ingot casting becomes certain particle size through broken essence,
It is overmolding to a diameter of 13 millimeters of core-spun yarn using iron sheet.This kind of core-spun yarn is inserted into steel in the refine later stage with certain payingoff speed
In liquid, in final steel, Ti content 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）, 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.
It is new composite core-spun yarn during iron and steel produces using solid calcium metal titanium silicon nitride alloyed powder composite core-spun yarn,
Addition from the refine later stage, can improve the recovery rate of nitrogen in steel titanium silicon, reduce other ferroalloy consumptions, have significantly economic effect
Benefit.Its reason is carbon or the nitrogen a size of nano level compound of formation in Ti and steel, and they are strong to having grown up of crystal grain
Inhibition, and when the volume fraction shared by this nano level compound is 2%, best to the thinning effect of tissue.Vanadium
(V)：Vanadium is the excellent deoxidizer of steel.The vanadium Jia 0.5% in steel can thinning microstructure crystal grain, raising intensity and toughness.Vanadium is formed with carbon
Carbide, hydrogen attack resistance can be improved at high temperature under high pressure.Boron (B)：Add micro boron can improve the cause of steel in steel
Close property and hot rolling performance, improve intensity.Niobium (Nb)：Niobium energy crystal grain thinning and the superheated susceptivity and the temper brittleness that reduce steel, carry
High intensity, but plasticity and toughness have declined.Add niobium in ordinary low-alloy steel, can improve anti-under weather-resistant and high temperature
Hydrogen, nitrogen, ammonia corrosion ability.Niobium can improving welding property.Add niobium in austenitic stainless steel, intercrystalline corrosion phenomenon can be prevented.Dilute
Earth elements refer to 15 lanthanide series that period of element atom ordinal number is 57-71.These elements are all metals, but they
Oxide is much like " native ", so traditionally claiming rare earth.In steel add rare earth, thus it is possible to vary the composition of steel inclusion, form, point
Cloth and property, thus improving the various performances of steel, such as toughness, weldability, cold-forming property.
Alloyed powder of the present invention is added in micro alloyed steel by the method using core-spun yarn, has the characteristics that following：
1) when stoping soaking, austenite crystal grows up：When the micro alloyed steels such as Ti heat with soaking before forging or rolling, not molten
The migration of the microalloy carbonitride Pinning austenite grain boundary of solution, stops its crystal grain from being grown up, thus makes micro alloyed steel in pressure
Just possess less austenite crystal before power processing, provide favourable condition for further fining ferrite grains.
2) stop austenite recrystallization during ausforming：During ausforming, analysed by strain inducing
The carbonitride precipitates of the Ti going out can suppress the growing up of crystal grain after deformed austeaite recrystallization and recrystallization, 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 effective motion stoping crystal boundary, sub boundary and dislocation, its effect can not only stop
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 separates out, and the particle that these separate out equally also plays pinning effect to ferrite crystal grain, limit
Make it to grow up.On the other hand, these particles also play precipitation enhancement, improve the intensity of ferrous materials.
4）The size of microalloy Carbonitride Precipitation particle and its volume fraction play a decisive role to ferrite grain size,
Precipitation particles is less, and volume fraction is bigger, and the ferrite crystal grain being obtained is also less.Thus, make great efforts to make precipitation particles have
Larger volume fraction and less size are the big targets in grain refinement process, are also the direction of invention simultaneously.Adding
While entering these rare elements, nitrogen pick-up simultaneously, because changing Ti after nitrogen pick-up in alternate distribution, promote Ti (C, N
) separate out, so that the particle size of precipitated phase is obviously reduced, thus enhancing the precipitation enhancement of titanium, increasing substantially steel
Intensity.Nitrogen passes through to promote Ti (C, N) to separate out, and pinning austenite ferrite crystal boundary effectively has refined ferrite brilliant
Grain.Nitrogen pick-up may additionally facilitate the formation of Intragranular Acicular Ferrite, has refined ferritic structure further.To Trace Titanium Treatment non-hardened and tempered steel,
Nitrogen pick-up improves the stability of TiN granule, more effectively stops Austenite Grain Growth.Make full use of cheap nitrogen,
Ensure, under certain intensity level, the addition of vanadium can be saved, reduce the cost of non-hardened and tempered steel further.
Specific embodiment
Embodiment 1
A kind of solid calcium metal and contain rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloyed powder composite core-spun yarn, this core-spun yarn bag
The sheetmetal layer including sandwich layer and being wrapped in outside described sandwich layer, is provided with the mesh-supported that steel or ferrum are made between sandwich layer and sheetmetal layer
Layer, described sandwich layer includes 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 wraps 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 1:3, described titanium silicon nitride alloyed powder last layer is below 3mm containing rare earth, niobium, vanadium, boron high titanium nitrogen for particle diameter
Change titanium silicon powder；
Described containing rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloy powder by mass percentage by elements below component structure
Become：
Al 2.0%,
N 10%,
Mn 4.0%,
Mg 2.0%,
Ti 40%,
Si 35%,
Nb 0.5%,
V 0.5%
B 0.5%,
Rare earth element 1.0%,
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, and in final steel, Ti content averagely reaches
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, purify molten steel and improve 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, niobium, vanadium, boron high titanium titanium silicon nitride alloyed powder composite core-spun yarn, this core-spun yarn bag
The sheetmetal layer including sandwich layer and being wrapped in outside described sandwich layer, is provided with the mesh-supported that steel or ferrum are made between sandwich layer and sheetmetal layer
Layer, described sandwich layer includes 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 wraps 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:Titanium silicon nitride alloyed powder last layer described in 3 is below 3mm containing rare earth, niobium, vanadium, the nitridation of boron high titanium for particle diameter
Titanium silicon powder；
It is made up of elements below component by mass percentage containing rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloy powder：
Al 1.0%,
N 15%,
Mn 4.0%,
Mg 1.0%,
Ti 50%,
Si 35%,
Nb 0.5%,
V 0.5%
B 0.5%,
Rare earth element 1.0%,
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, and in final steel, Ti content averagely reaches
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, purify molten steel and improve 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, niobium, vanadium, boron high titanium titanium silicon nitride alloyed powder composite core-spun yarn, this core-spun yarn bag
The sheetmetal layer including sandwich layer and being wrapped in outside described sandwich layer, is provided with the mesh-supported that steel or ferrum are made between sandwich layer and sheetmetal layer
Layer, described sandwich layer includes 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 wraps 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:Titanium silicon nitride alloyed powder last layer described in 3 is below 3mm containing rare earth, niobium, vanadium, the nitridation of boron high titanium for particle diameter
Titanium silicon powder；
It is made up of elements below component by mass percentage containing rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloy powder：
Al 2.5%,
N 5%,
Mn 2.5%,
Mg 2.0%,
Ti 50%,
Si 35%,
Nb 0.5%,
V 0.5%
B 0.5%,
Rare earth element 1.0%,
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, and in final steel, Ti content averagely reaches
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, purify molten steel and improve 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, niobium, vanadium, boron high titanium titanium silicon nitride alloyed powder composite core-spun yarn, its feature exists
Include sandwich layer and the sheetmetal layer being wrapped in outside described sandwich layer in this core-spun yarn, be provided with steel between sandwich layer and sheetmetal layer or ferrum is made
Mesh-supported layer, described sandwich layer includes 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, and titanium silicon nitride alloyed powder last layer wraps up intermediate protective layer, real core metal calcium line and titanium silicon nitride
The mass ratio of alloyed powder last layer is 1:2 ~ 5, described titanium silicon nitride alloyed powder last layer for particle diameter be below 3mm containing rare earth, niobium,
Vanadium, boron high titanium titanium silicon nitride alloy powder；
Described containing rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloy powder by mass percentage by elements below component structure
Become：
Al 1.0 ~ 2.5%,
N 5 ~ 15%,
Mn 2.5 ~ 5.0%,
Mg 1.0 ~ 2.5%,
Ti 40 ~ 60%,
Si 35 ~ 50%,
Nb 0.5 ~ 1.0%,
V 0.5 ~ 1.0%,
B 0.5 ~ 1.0%,
Rare earth element 1.0 ~ 2.0%,
P≤0.1%,
S ≤0.1%；
Fe surplus.
2. a kind of solid calcium metal according to claim 1 and contain rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloyed powder
Composite core-spun yarn is it is characterised in that contain rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloy powder by mass percentage by following
Elemental constituent is constituted：
Al 1.5~2.0%
N 8~12%
Mn 3.0~4.0%
Mg 1.5~2.0%
Ti 45~55%
P ≤0.1%
S ≤0.1%
Si 40~45%；
Fe surplus.
3. a kind of solid calcium metal according to claim 1 and 2 and contain rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloy
Powder composite core-spun yarn is it is characterised in that the granularity containing rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloy powder is 0.1 ~ 2.0mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611017029.6A CN106480254A (en) | 2016-11-19 | 2016-11-19 | A kind of solid calcium metal and contain rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloyed powder composite core-spun yarn |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611017029.6A CN106480254A (en) | 2016-11-19 | 2016-11-19 | A kind of solid calcium metal and contain rare earth, niobium, vanadium, boron high titanium titanium silicon nitride alloyed powder composite core-spun yarn |
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| CN106480254A true CN106480254A (en) | 2017-03-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041334A (en) * | 2019-12-30 | 2020-04-21 | 马鞍山中科冶金材料科技有限公司 | Rare earth silicon-nitrogen-titanium alloy and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5340615A (en) * | 1976-09-27 | 1978-04-13 | Sumitomo Metal Ind Ltd | Steel nitriding agent |
| 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 |
| CN104726641A (en) * | 2014-04-28 | 2015-06-24 | 浙江宝信新型炉料科技发展有限公司 | Titanium silicon nitride core-spun yarn |
| CN105463287A (en) * | 2015-12-24 | 2016-04-06 | 马鞍山中科冶金材料科技有限公司 | Multi-element nitralloy material and preparation method and application thereof |
-
2016
- 2016-11-19 CN CN201611017029.6A patent/CN106480254A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5340615A (en) * | 1976-09-27 | 1978-04-13 | Sumitomo Metal Ind Ltd | Steel nitriding agent |
| 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 |
| CN104726641A (en) * | 2014-04-28 | 2015-06-24 | 浙江宝信新型炉料科技发展有限公司 | Titanium silicon nitride core-spun yarn |
| CN105463287A (en) * | 2015-12-24 | 2016-04-06 | 马鞍山中科冶金材料科技有限公司 | Multi-element nitralloy material and preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041334A (en) * | 2019-12-30 | 2020-04-21 | 马鞍山中科冶金材料科技有限公司 | Rare earth silicon-nitrogen-titanium alloy and preparation method and application thereof |
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