CN106636545A - High-titanium titanium-silicon nitride alloy core spun yarn - Google Patents

High-titanium titanium-silicon nitride alloy core spun yarn Download PDF

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Publication number
CN106636545A
CN106636545A CN201611016240.6A CN201611016240A CN106636545A CN 106636545 A CN106636545 A CN 106636545A CN 201611016240 A CN201611016240 A CN 201611016240A CN 106636545 A CN106636545 A CN 106636545A
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CN
China
Prior art keywords
titanium
silicon nitride
steel
spun yarn
core
Prior art date
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Application number
CN201611016240.6A
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Chinese (zh)
Inventor
凌春源
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ZHEJIANG BAOXIN NEW FURNACE TECHNOLOGY DEVELOPMENT Co Ltd
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ZHEJIANG BAOXIN NEW FURNACE TECHNOLOGY DEVELOPMENT Co Ltd
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Priority to CN201611016240.6A priority Critical patent/CN106636545A/en
Publication of CN106636545A publication Critical patent/CN106636545A/en
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0056Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
    • B22F1/0003
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0006Adding metallic additives
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C29/00Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/16Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on nitrides

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Coating With Molten Metal (AREA)

Abstract

The invention relates to an alloy core spun yarn, in particular to a high-titanium titanium-silicon nitride alloy core spun yarn. The core spun yarn comprises a core layer and a steel skin layer wrapped at the outer portion of the core layer. The core layer is made of titanium-silicon nitride alloy powder with the particle size being smaller than 3 mm. A net-shaped supporting layer made of steel or iron is arranged between the core layer and the steel skin layer. The titanium-silicon nitride alloy powder comprises the following element components including, by mass percent, 1.0%-2.5% of Al, 5%-15% of N, 2.5%-5.0% of Mn, 1.0%-2.5% of Mg, 40%-60% of Ti, smaller than or equal to 0.1% of P, smaller than or equal to 0.1% of S, 35%-50% of Si and the balance Fe. The alloy powder is added in microalloyed steel in a core spun yarn method, the problem of the low recovery rate can be solved, in addition, the use amount of silicon iron and ferromanganese iron can be saved, application of titanium-silicon nitride and a core spun yarn alloy of the titanium-silicon nitride is developed, and obvious economic benefits are achieved.

Description

A kind of high titanium titanium silicon nitride alloy claded wire
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 that the novel metallurgical subject-micro-alloying technology occurred using 20 century 70s is existed 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 Iron & Steel Material of New Generation that exploitation is badly in need of are 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, improves the performance of steel, and can significantly be carried Low alloy-consumption, drops in heavy alloyed recovery rate, reduces steel-making cost, remarkable in economical benefits.
Titanium silicon nitride core-spun yarn is composite core-spun yarn new 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(Iron content is lower than ferro-titanium by more than 30% in high titanium titanium silicon nitride alloy), in adition process, swim in molten steel Surface and combined with slag be oxidized, cause the recovery rate of titanium relatively low(Average out to 27%), Ti content 0.0038% in steel, up to not Require to internal quality control.And high titanium titanium silicon nitride alloy is fed in steel at Argon station by the form of core-spun yarn, on the one hand can be with It is that alloy rapidly enters molten steel, it is to avoid alloy is aoxidized in molten steel by slag;On the other hand, through the molten steel oxygen of furnace rear deoxidation treatment The property changed is low, it is possible to reduce the scaling loss of titanium, so as to improve and stablize the response rate of the titanium in steel.
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 that is 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 constitutes 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 Effectively prevent Austenite Grain Growth.Cheap nitrogen is made full use of, in the case where certain intensity level is ensured, titanium can be saved Addition, further reduce the cost of non-hardened and tempered steel.
The content of the invention
It is an object of the invention to provide a kind of high titanium titanium silicon nitride alloy claded wire, by being added using the method for core-spun yarn Enter in micro alloyed steel to solve the problems, such as that the response rate is low, and the usage amount of ferrosilicon, ferromanganese can also be saved, develop Titanium silicon nitride and its core-spun yarn Alloyapplication, with significant economic benefit.
In order to realize above-mentioned purpose, following technical scheme is present invention employs:
A kind of high titanium titanium silicon nitride alloy claded wire, the core-spun yarn includes sandwich layer and the sheetmetal layer being wrapped in outside the sandwich layer, The sandwich layer is that particle diameter is the high titanium titanium silicon nitride alloy powder of below 3mm, and steel or ferrum are provided between the sandwich layer and sheetmetal layer Made by mesh-supported layer, high titanium titanium silicon nitride alloy powder is made up of by mass percentage elements below component:
Al 1.0~2.5%
N 5~15%
Mn 2.5~5.0%
Mg 1.0~2.5%
Ti 40~60%
P ≤0.1%
S ≤0.1%
Si 35~50%;
Fe surpluses.
Preferably, high titanium titanium silicon nitride alloy powder is made up of by mass percentage elements below component:
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 surpluses.
It is 0.1 ~ 2.0mm as the granularity of preferred 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 Jing is broken pure into certain particle size, A diameter of 13 millimeters of core-spun yarn is overmolding to using iron sheet.This kind of core-spun yarn is inserted into steel in the refine later stage with certain payingoff speed In liquid, Ti contents averagely reach the recovery rate average 60% of average 55%, the Si of the response rate of 0.008%, Ti in final steel.
It is composite core-spun yarn new in iron and steel production using the core-spun yarn of high titanium titanium silicon nitride alloyed powder of the invention, in essence Add from the refining later stage, the recovery rate of nitrogen in steel titanium silicon can be improved, other ferroalloy consumptions are reduced, with significant economic benefit. Its reason is that Ti and carbon or nitrogen in steel form size for nano level compound, their strong obstructions of having grown up to crystal grain Effect, and the volume fraction shared by this nano level compound be 2% when, to organize thinning effect it is best.
Alloyed powder of the present invention by using the method for core-spun yarn to be added to micro alloyed steel in, with it is following the characteristics of:
1) austenite crystal grows up when preventing soaking:The micro alloyed steels such as Ti are not molten in heating before forging or rolling and soaking 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, for further fining ferrite grains favourable condition is provided.
2) austenite recrystallization is prevented during ausforming:During ausforming, analysed by strain inducing Crystal grain is grown up after the carbonitride precipitates of the Ti for going out can suppress deformed austeaite to recrystallize and recrystallize, 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, will there is ferrite transformation, at this moment will there is 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 it 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 is the big target in grain refinement process, while being also the direction of invention.Adding While entering these rare elements, while nitrogen pick-up, because Ti is changed after nitrogen pick-up in alternate distribution, promotes Ti (C, N ) separate out, the particle size for making precipitated phase is obviously reduced, and 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 grain boundaries, have 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, Under ensureing 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 high titanium titanium silicon nitride alloy claded wire, the core-spun yarn includes sandwich layer and the sheetmetal layer being wrapped in outside the sandwich layer, The sandwich layer is that particle diameter is the high titanium titanium silicon nitride alloy powder of below 3mm, and steel or ferrum are provided between the sandwich layer and sheetmetal layer Made by mesh-supported layer, high titanium titanium silicon nitride alloy powder is made up of by mass percentage elements below component:
Al 2.0%
N 10%
Mn 4.0%
Mg 2.0%
Ti 40%
P ≤0.1%
S ≤0.1%
Si 35%;
Fe surpluses.
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 Jing is broken pure into certain particle size, A diameter of 13 millimeters of core-spun yarn is overmolding to using iron sheet.This kind of core-spun yarn is inserted into steel in the refine later stage with certain payingoff speed In liquid, Ti contents averagely reach the recovery rate average 60% of average 55%, the Si of the response rate of 0.008%, Ti in final steel.
Embodiment 2
A kind of high titanium titanium silicon nitride alloy claded wire, the core-spun yarn includes sandwich layer and the sheetmetal layer being wrapped in outside the sandwich layer, The sandwich layer is that particle diameter is the high titanium titanium silicon nitride alloy powder of below 3mm, and steel or ferrum are provided between the sandwich layer and sheetmetal layer Made by mesh-supported layer, high titanium titanium silicon nitride alloy powder is made up of by mass percentage elements below component:
Al 2.5%
N 5%
Mn 2.5%
Mg 2.0%
Ti 50%
P ≤0.1%
S ≤0.1%
Si 35%;
Fe surpluses.
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 Jing is broken pure into certain particle size, A diameter of 13 millimeters of core-spun yarn is overmolding to using iron sheet.This kind of core-spun yarn is inserted into steel in the refine later stage with certain payingoff speed In liquid, Ti contents averagely reach the recovery rate average 60% of average 55%, the Si of the response rate of 0.008%, Ti in final steel.
Embodiment 3
A kind of high titanium titanium silicon nitride alloy claded wire, the core-spun yarn includes sandwich layer and the sheetmetal layer being wrapped in outside the sandwich layer, The sandwich layer is that particle diameter is the high titanium titanium silicon nitride alloy powder of below 3mm, and steel or ferrum are provided between the sandwich layer and sheetmetal layer Made by mesh-supported layer, high titanium titanium silicon nitride alloy powder is made up of by mass percentage elements below component:
Al 2.5%
N 25%
Mn 2.5%
Mg 2.0%
Ti 30%
P ≤0.1%
S ≤0.1%
Si 30%;
Fe surpluses.
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 Jing is broken pure into certain particle size, A diameter of 13 millimeters of core-spun yarn is overmolding to using iron sheet.This kind of core-spun yarn is inserted into steel in the refine later stage with certain payingoff speed In liquid, Ti contents averagely reach the recovery rate average 60% of average 55%, the Si of the response rate of 0.008%, Ti in final steel.

Claims (3)

1. a kind of high titanium titanium silicon nitride alloy claded wire, it is characterised in that the core-spun yarn includes sandwich layer and is wrapped in outside the sandwich layer The sheetmetal layer in portion, the sandwich layer is the high titanium titanium silicon nitride alloy powder that particle diameter is below 3mm, between the sandwich layer and sheetmetal layer Mesh-supported layer made by steel or ferrum is provided with, high titanium titanium silicon nitride alloy powder is by mass percentage by elements below component structure Into:
Al 1.0~2.5%
N 5~15%
Mn 2.5~5.0%
Mg 1.0~2.5%
Ti 40~60%
P ≤0.1%
S ≤0.1%
Si 35~50%;
Fe surpluses.
2. a kind of high titanium titanium silicon nitride alloy claded wire according to claim 1, it is characterised in that high titanium titanium silicon nitride is closed Bronze end is made up of by mass percentage elements below component:
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 surpluses.
3. a kind of high titanium titanium silicon nitride alloy claded wire according to claim 1 and 2, it is characterised in that high titanium titanium silicon nitride The granularity of alloy powder is 0.1 ~ 2.0mm.
CN201611016240.6A 2016-11-18 2016-11-18 High-titanium titanium-silicon nitride alloy core spun yarn Withdrawn CN106636545A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111621617A (en) * 2019-02-28 2020-09-04 凌天鹰 Titanium iron nitride, manufacturing method thereof and cored wire

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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
CN105400927A (en) * 2015-12-24 2016-03-16 马鞍山中科冶金材料科技有限公司 Multi-element nitralloy core-spun yarn and application and application method of same to HRB400 steel reinforcing treatment technology
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

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CN101260450A (en) * 2008-04-30 2008-09-10 湖北猴王焊材有限公司 Micro-alloy composite core-spun yarn for high-strength structure steel
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
CN202401117U (en) * 2011-12-08 2012-08-29 攀枝花钢城集团有限公司 Cored wire
CN102828000A (en) * 2012-10-08 2012-12-19 侯巍 Metallurgical V-N microalloying and compound deoxidation cored wire
CN103808558A (en) * 2014-03-03 2014-05-21 攀钢集团攀枝花钢铁研究院有限公司 Digestion method and detection method for vanadium-nitrogen-titanium-iron mixed alloy conductor
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CN204097507U (en) * 2014-09-10 2015-01-14 马鞍山市鑫海耐火材料有限责任公司 The novel cored-wire of a kind of external refining
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Publication number Priority date Publication date Assignee Title
CN111621617A (en) * 2019-02-28 2020-09-04 凌天鹰 Titanium iron nitride, manufacturing method thereof and cored wire

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Application publication date: 20170510