CN104357614B - A kind of ferro-silicon nitride alloy claded wire and preparation method thereof - Google Patents
A kind of ferro-silicon nitride alloy claded wire and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of ferro-silicon nitride alloy claded wire and preparation method thereof, belong to cored wire technology field.A kind of ferro-silicon nitride alloy claded wire of the present invention is formed by steel band cladding core powder, and core powder each component is formed as follows by mass parts：70 95 parts of ferro-silicon nitride alloy, 4.9 29.7 parts of fixed nitrogen alloying element ferroalloy, 0.1 0.3 parts of silicon base lanthanon alloy powder.A kind of preparation method of ferro-silicon nitride alloy claded wire of the present invention, its step are：Ferro-silicon nitride alloy is stocked up；Fixed nitrogen alloying element ferroalloy is stocked up；Silicon base lanthanon alloy powder is stocked up；The preparation of core powder；Steel band coats core powder, uses thickness that core powder is overmolding to a diameter of 9 13mm core-spun yarn for 0.34 0.45mm steel band.The invention enables nitrogen fixation effect and effect be improved significantly, recovery rate of the nitrogen in molten steel greatly improves, overcome nitrogenous material in the prior art be made core-spun yarn make in micro alloyed steel production existing for nitrogen pick-up hardening agent use it is insufficient.
Description
Technical field
The invention belongs to the nitrogen pick-up of Ferrous Metallurgy V-bearing microalloyed steel steelmaking process furnace outer refining process to improve steel alloy
The cored wire technology field of intensity, more particularly to a kind of ferro-silicon nitride alloy claded wire and preparation method thereof.Containing the micro- conjunction of vanadium
Jin Gang, RHB400 and more than RHB400E grade high-strengths screw-thread steel and silicon steel, which make nitrogen pick-up hardening agent production field, has wide answer
Use prospect.
Background technology
V, Nb, Al, Ti pretended with crystal grain thinning and Precipitation etc. is usually added into micro alloyed steel production process
Trace element, high intensity, high weldability and good processability are obtained after making steel hot rolling.Weak point is added in steel
Micro- V, Nb, Al, Ti are expensive, its production cost is remained high, simultaneously because Al, Ti belong to active element, easily with
Oxygen reaction generation high-melting-point oxide inclusion in steel, it is difficult to remove, so as to pollute molten steel, influence continuous casting and normally produce.
21st century removes, and steel mill starts to promote the use of VN alloy replacement vanadium iron, ferrocolumbium, because in VN alloy
N, C atoms form high-melting-point, high strength carbon compound, nitride and carbonitride, crystal grain thinning and Precipitation and pretended in V and steel
It is more obvious with being acted on than the trace element such as V, Nb, Al, Ti, micro- V, Nb, Al, Ti addition can be effectively reduced, is dropped
Humble steel alloy production cost.Thus VN alloy is as a kind of most economical effective additive of Aldecor, extensively
Produced applied to steel such as non-hardened and tempered steel, high-strength thick H profile steel, tool steel, high-strength hot rolled ribbed steel bars.But VN alloy is given birth to
It is harsh to temperature control requirement during production, complex manufacturing, and invest greatly, product quality and stability is not high, causes
VN alloy price is up to more than 10 ten thousand yuan/ton, is unfavorable for steel mill and taps the latent power drop originally.Meanwhile because VN alloy production technology limits, close
N maximum levels only have 14% in gold, consequently only that 35.5% vanadium forms V (N, C), in steel a large amount of V do not play precipitation strength and
Suppress the effect that crystal grain is grown up, V wastes are larger in steel.
Reinforcing precipitation effect based on N element in V-alloyed steel, in order to improve the utilization rate of V in V-alloyed steel, further drops
Low production cost, Yi Zhongru：The materials rich in N (N content is 20%) such as nitridation silicomanganese, chromium nitride, titanium nitride, aluminium nitride are used for
Make nitrogen promoter use in micro alloyed steel, made progress with improving the application study of the utilization rate of micro alloying element V.Nitride material
Nitrogen pick-up hardening agent as V-alloyed steel is mainly using feed postition, shape are as alloy profile together with deoxygenated alloy after stove
Bulk, granularity 5-50mm.But because the materials such as chromium nitride, titanium nitride, aluminium nitride have the disadvantage that：1) it is on the high side, one
As in 15000 yuan/more than t, cause micro alloyed steel production cost higher；2) chromium, titanium, aluminium category ripple gold living in single nitrogenous material
Category, added with alloy form after stove, because bulk density is small, swim in molten steel surface, fixed nitrogen alloying element easily scaling loss and by steel
Water oxygenization is lost, and fixed nitrogen alloying element is significantly lost, and N volatilizing losses are big, and nitrogen fixation effect is bad, and molten steel nitrogen increased amount is few, and nitrogen is received
Yield is unstable (typically in 0-25%), and N invigoration effect is limited；3) oxygen in titanium higher in nitrogenous material, aluminium content, with steel
The oxide inclusion of production is reacted, fusing point is high, viscosity is big, it is difficult to float, steel quality is polluted greatly, continuous casting is influenceed and normally pours
The shortcomings of casting, thus limit practical application of these nitrogenous materials in micro alloyed steel production.
To solve nitrogen pick-up hardening agent of the materials such as chromium nitride, titanium nitride, aluminium nitride as V-alloyed steel with alloy feed postition
Shortcoming be present, alloy claded wire be made in nitriding silicon-manganese alloy particle, as V-alloyed steel nitrogen pick-up hardening agent in LF refining with feed
The technology that line mode is added in molten steel succeeds in production RHB400E V-alloyed steels.Due to the effect of micro- V in steel, steel
Middle N recovery rates are significantly improved to 40%, and the precipitation strength effect of nitrogen is more obvious, under equal manufacturing condition, is fed in steel
After nitriding silicon-manganese alloy core-spun yarn, the mechanical performance index such as the RHB400E steel surrender of production, tension, elongation percentage is better than use
The RHB400E of vanadium micro-alloying technique productions, vanadium alloy more than 20% can be reduced.But the silicon, manganese in nitriding silicon-manganese alloy easily with
Steel water oxygen react, be free of in steel or few V, Nb, Al, Ti nitrogen killer of content in the case of, nitrogenize silicomanganese in silicon, manganese
Almost there is no nitrogen fixation.Therefore, make nitrogen pick-up hardening agent using nitriding silicon-manganese alloy line to be limited only on production V-alloyed steel such as：
Used on RHB400E steel grades, be up to 15000 yuan/t plus nitriding silicon-manganese alloy price, production micro alloyed steel drops this advantage and failed to understand
It is aobvious, promote the use of and be restricted in steel mill.
Disclosed on the existing related art scheme of core-spun yarn, such as：Chinese Patent Application No. 201210377151.X, the applying date
On October 8th, 2012, invention disclosed was entitled：A kind of technology of the core-spun yarn of Metallurgical V-N microalloying and complex deoxidization
Scheme；Chinese Patent Application No. 201410131544.1, April 3 2014 applying date, invention disclosed was entitled：Vanadium microalloy
Change technical scheme of the steel nitrogen pick-up with nitridation silicomanganese core-spun yarn；Chinese Patent Application No. 201320280835.8,2013 5 applying date
The moon, invention disclosed on the 22nd was entitled：A kind of technical scheme of the core-spun yarn of Metallurgical V-N microalloying and complex deoxidization.But
Being that technical scheme disclosed in above-mentioned patent document taps the latent power to drop for iron and steel enterprise originally also has certain space, its key technology
Problem is：Recovery rate of the nitrogen in molten steel is low, causes nitrogenous material that alloy and core-spun yarn is made in micro alloyed steel production
Make nitrogen pick-up hardening agent and use Shortcomings.
The content of the invention
1. invention technical problems to be solved
It is an object of the invention to overcome nitrogenous material that core-spun yarn is made to make the use of nitrogen pick-up hardening agent in micro alloyed steel production
Existing deficiency, there is provided a kind of ferro-silicon nitride alloy claded wire and preparation method thereof, using technical scheme, fixed nitrogen
Effect and effect be improved significantly, recovery rate of the nitrogen in molten steel greatly improves.
2. technical scheme
To reach above-mentioned purpose, technical scheme provided by the invention is：
First, a kind of ferro-silicon nitride alloy claded wire of the present invention, the ferro-silicon nitride alloy claded wire coat core by steel band
Powder is formed, and described core powder is made up of ferro-silicon nitride alloy, fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloy powder, its
In：Core powder each component is formed as follows by mass parts：Ferro-silicon nitride alloy 70-95 parts, fixed nitrogen alloying element ferroalloy 4.9-29.7
Part, silicon base lanthanon alloy powder 0.1-0.3 parts, above-mentioned fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloy powder are used for will
Nitrogen is fixed in molten steel.
Further, described fixed nitrogen alloying element ferroalloy is vanadium iron, ferrocolumbium, alfer, ferrotianium
One or more kinds of mixing in alloy.The present invention is made from vanadium iron, ferrocolumbium, alfer, ferro-titanium
For fixed nitrogen alloying element ferroalloy, and silicon base lanthanon alloy powder is coordinated to devise new formula so that core-spun yarn of the invention
Both reduced with steel oxygen react probability, stability is more preferable, nitrogen fixation effect and act on it is more obvious, N recovery rates 40% with
On, the use cost of nitrogen pick-up hardening agent is reduced again, and ton steel can cost declining 5-60 members.The break-through point prominent as the present invention, this
Invention is optimal in molten steel to nitrogen by realizing using fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloy powder
Fixation so that recovery rate of the nitrogen in molten steel is guaranteed, and changes fixed nitrogen mode of the prior art completely, this
Invention proposes the fixed nitrogen mode of innovation, and this is patent applicant organizational technology expert years of researches achievement.
Further, described ferro-silicon nitride alloy is made up of particle diameter for≤0.5mm, 0.5-1mm, 1-3mm powder, its
Middle particle diameter≤0.5mm powder accounts for the 5-10% of ferro-silicon nitride alloy gross mass, and particle diameter 0.5-1mm powder accounts for ferro-silicon nitride conjunction
The 80-90% of golden gross mass, particle diameter 1-3mm powder account for the 5-10% of ferro-silicon nitride alloy gross mass.Described fixed nitrogen alloy
Element ferroalloy is made up of particle diameter for≤0.5mm, 0.5-1mm, 1-2mm powder, and wherein particle diameter≤0.5mm powder accounts for fixed nitrogen conjunction
The 5-10% of gold element ferroalloy gross mass, particle diameter 0.5-1mm powder account for the 80- of fixed nitrogen alloying element ferroalloy gross mass
90%, particle diameter 1-2mm powder account for the 5-10% of fixed nitrogen alloying element ferroalloy gross mass.Described silicon base lanthanon alloy powder
It is made up of particle diameter for≤0.5mm, 0.5-1mm powder, wherein particle diameter≤0.5mm powder accounts for silicon base lanthanon alloy powder gross mass
10-25%, particle diameter 0.5-1mm powder accounts for the 75-90% of silicon base lanthanon alloy powder gross mass.
Ferro-silicon nitride alloy is made up of particle diameter for≤0.5mm, 0.5-1mm, 1-3mm powder in the present invention, fixed nitrogen alloy member
Plain sheet alloy is made up of particle diameter for≤0.5mm, 0.5-1mm, 1-2mm powder, silicon base lanthanon alloy powder by particle diameter for≤
0.5mm, 0.5-1mm powder form, and this is the key technology means of the present invention, and in general core-spun yarn only makes a search in component,
It is found by the applicant that considering that the how optimal fixed nitrogen of core-spun yarn can not be realized in component merely, what the present invention innovated proposes logical
Cross the cooperation of component and by being designed to the granularity of each component, reduce the probability reacted with oxygen in steel, stability is more
Good, nitrogen fixation effect and effect are more obvious, and N recovery rates are more than 40%.
Second, a kind of preparation method of ferro-silicon nitride alloy claded wire of the present invention, its step are：
Step 1: ferro-silicon nitride alloy is stocked up
Ferro-silicon nitride alloy is crushed using disintegrating apparatus, the ferro-silicon nitride that will have been crushed using vibratory sieve after broken
Alloy is sieved into≤0.5mm, 0.5-1mm, 1-3mm powder, and dispensing is carried out according still further to following percentage by weight：Particle diameter≤0.5mm
Powder account for the 5-10% of ferro-silicon nitride alloy gross mass, particle diameter 0.5-1mm powder accounts for the 80- of ferro-silicon nitride alloy gross mass
90%, particle diameter 1-3mm powder accounts for the 5-10% of ferro-silicon nitride alloy gross mass, and ferro-silicon nitride alloy is obtained after dispensing mixing, standby
With；
Step 2: fixed nitrogen alloying element ferroalloy is stocked up
Fixed nitrogen alloying element ferroalloy is crushed using disintegrating apparatus, consolidated after broken using vibratory sieve by what is crushed
Nitrogen alloying element ferroalloy is sieved into≤0.5mm, 0.5-1mm, 1-2mm powder, and dispensing is carried out according still further to following percentage by weight：
Particle diameter≤0.5mm powder accounts for the 5-10% of fixed nitrogen alloying element ferroalloy gross mass, and particle diameter 0.5-1mm powder accounts for fixed nitrogen conjunction
The 80-90% of gold element ferroalloy gross mass, particle diameter 1-2mm powder account for the 5- of fixed nitrogen alloying element ferroalloy gross mass
10%, fixed nitrogen alloying element ferroalloy is obtained after dispensing mixing, it is standby；
Step 3: silicon base lanthanon alloy powder is stocked up
Silicon base lanthanon alloy is crushed using disintegrating apparatus, the silicon base lanthanon that will have been crushed using vibratory sieve after broken
Alloy is sieved into≤0.5mm, 0.5-1mm powder, and dispensing is carried out according still further to following percentage by weight：Particle diameter≤0.5mm powder
The 10-25% of silicon base lanthanon alloy powder gross mass is accounted for, particle diameter 0.5-1mm powder accounts for silicon base lanthanon alloy powder gross mass
75-90%, silicon base lanthanon alloy powder is obtained after dispensing mixing, it is standby；
Step 4: the preparation of core powder
Ferro-silicon nitride alloy 70-95 parts in step 1 to step 3 are weighed by mass fraction, fixed nitrogen alloy element Fe is closed
Golden 4.9-29.7 parts, silicon base lanthanon alloy powder 0.1-0.3 parts, by ferro-silicon nitride alloy, fixed nitrogen alloying element ferroalloy and silicon
Base rare earth alloy powder mixes to obtain core powder；
Step 5: steel band coats core powder
Use thickness that the core powder in step 4 is overmolding to a diameter of 9-13mm cored for 0.34-0.45mm steel band
Line, produce ferro-silicon nitride alloy claded wire.
Further, the fixed nitrogen alloying element ferroalloy in step 2 be vanadium iron, ferrocolumbium, alfer,
One or more kinds of mixing in ferro-titanium.
3. beneficial effect
Using technical scheme provided by the invention, compared with prior art, there is following remarkable result：
(1) a kind of ferro-silicon nitride alloy claded wire of the invention, its core powder is by ferro-silicon nitride alloy, fixed nitrogen alloy element Fe
Alloy and silicon base lanthanon alloy powder composition, wherein fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloy powder are used for nitrogen member
Element is fixed in molten steel, the innovative design that core-spun yarn of the invention passes through core powder component so that nitrogen fixation effect and effect obtain bright
Aobvious to improve, recovery rate of the nitrogen in molten steel greatly improves, overcomes nitrogenous material in the prior art and core-spun yarn is made micro-
Steel alloy production is made insufficient existing for nitrogen pick-up hardening agent use；
(2) preparation method of a kind of ferro-silicon nitride alloy claded wire of the invention, by component ferro-silicon nitride in core powder
The granularity of alloy, fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloy powder does the design of uniqueness, and controls core powder each component
Formed by mass parts as follows：Ferro-silicon nitride alloy 70-95 parts, fixed nitrogen alloying element ferroalloy 4.9-29.7 parts, silicon base lanthanon close
Bronze end 0.1-0.3 parts, core powder is overmolding to a diameter of 9-13mm core-spun yarn using steel band, can be in ar blowing refining station, LF steel
Bag stove uses, and can make full use of the existing wire-feeding device comprising straightening wire-leading device of steel mill, by the way that core-spun yarn is fed into molten steel deep, is stirred in Argon gas strength
Mix under effect, bigger with steel contacts area, N is distributed more uniformly in molten steel, and nitrogen fixation effect is more preferable, and N recovery rate is higher.
Embodiment
To further appreciate that present disclosure, with reference to embodiment, the invention will be further described.
Embodiment 1
A kind of preparation method of ferro-silicon nitride alloy claded wire of the present embodiment, its specific step are：
Step 1: ferro-silicon nitride alloy is stocked up
Ferro-silicon nitride alloy is crushed using disintegrating apparatus, the ferro-silicon nitride that will have been crushed using vibratory sieve after broken
Alloy is sieved into≤0.5mm, 0.5-1mm, 1-3mm powder, and dispensing is carried out according still further to following percentage by weight：Particle diameter≤0.5mm
Powder account for the 7% of ferro-silicon nitride alloy gross mass, particle diameter 0.5-1mm powder accounts for the 85% of ferro-silicon nitride alloy gross mass,
Particle diameter 1-3mm powder accounts for the 8% of ferro-silicon nitride alloy gross mass, and ferro-silicon nitride alloy is obtained after dispensing mixing, standby.This implementation
Require that the mass percent of element is in example in the composition of ferro-silicon nitride alloy：N >=30%, Si >=50%.
Step 2: fixed nitrogen alloying element ferroalloy is stocked up
Fixed nitrogen alloying element ferroalloy is crushed using disintegrating apparatus, consolidated after broken using vibratory sieve by what is crushed
Nitrogen alloying element ferroalloy is sieved into≤0.5mm, 0.5-1mm, 1-2mm powder, and dispensing is carried out according still further to following percentage by weight：
Particle diameter≤0.5mm powder accounts for the 8% of fixed nitrogen alloying element ferroalloy gross mass, and particle diameter 0.5-1mm powder accounts for fixed nitrogen alloy
The 85% of element ferroalloy gross mass, particle diameter 1-2mm powder account for the 7% of fixed nitrogen alloying element ferroalloy gross mass, and dispensing is mixed
Fixed nitrogen alloying element ferroalloy is obtained after conjunction, it is standby.Fixed nitrogen alloying element ferroalloy can be vanadium iron, ferro-niobium conjunction in the present invention
One or more kinds of mixing in gold, alfer, ferro-titanium, the quality hundred of element is required in the composition of vanadium iron
Point ratio is：V >=50%；The mass percent that element is required in the composition of ferrocolumbium is：Nb >=60%；The composition of alfer
It is middle require element mass percent be：Al >=95%；The mass percent that element is required in the composition of ferro-titanium is：Ti≥
30%.Fixed nitrogen alloying element ferroalloy in the present embodiment uses vanadium iron.
Step 3: silicon base lanthanon alloy powder is stocked up
Silicon base lanthanon alloy is crushed using disintegrating apparatus, the silicon base lanthanon that will have been crushed using vibratory sieve after broken
Alloy is sieved into≤0.5mm, 0.5-1mm powder, and dispensing is carried out according still further to following percentage by weight：Particle diameter≤0.5mm powder
The 20% of silicon base lanthanon alloy powder gross mass is accounted for, particle diameter 0.5-1mm powder accounts for silicon base lanthanon alloy powder gross mass
80%, silicon base lanthanon alloy powder is obtained after dispensing mixing, it is standby.Required in the present embodiment in the composition of silicon base lanthanon alloy powder
The mass percent of element is：RE is 30-35%, Si 30-35%.
Step 4: the preparation of core powder
83 parts of ferro-silicon nitride alloy, the fixed nitrogen alloying element ferroalloy 17 in step 1 to step 3 are weighed by mass fraction
Part, 0.2 part of silicon base lanthanon alloy powder, by ferro-silicon nitride alloy, fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloy powder
Mix to obtain core powder.Ferro-silicon nitride alloy, fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloy powder mixed in the present embodiment
Journey is specific as follows：First the half of the silicon base lanthanon alloy powder weight weighed is added in fixed nitrogen alloying element ferroalloy,
Rare earth-fixed nitrogen alloy mixture is stirred to obtain in mixer；Then by the another of the silicon base lanthanon alloy powder weight weighed
Partly it is added in ferro-silicon nitride alloy, rare earth-ferro-silicon nitride mixture is stirred to obtain in mixer；Again will be above-mentioned dilute
Soil-fixed nitrogen alloy mixture and rare earth-ferro-silicon nitride mixture, which are placed in mixer, is stirred to obtain core powder.Using such mixed
Stirring technique is closed, ferro-silicon nitride alloy, fixed nitrogen alloying element ferroalloy, silicon base lanthanon alloy powder three can be fully ensured that
Mixed effect, and can be played a role for silicon base lanthanon alloy powder in molten steel and play place mat effect.
Step 5: steel band coats core powder
Use thickness that the core powder in step 4 is overmolding to a diameter of 13mm core-spun yarn for 0.40mm steel band, produce nitrogen
SiClx ferroalloy core-spun yarn.Obtained ferro-silicon nitride alloy claded wire requires its core powder rice weight >=200g/m, and ferro-silicon nitride closes
Meter Chong Liang >=390g/m of golden core-spun yarn, specifically core powder rice weight is 210g/m in the present embodiment, ferro-silicon nitride alloy cored
The meter Chong Liang of line is 395g/m.
When producing RHB400 steel, after converter tapping alloying, the present embodiment is fed by feeding wire machine at ar blowing refining station
The ferro-silicon nitride alloy claded wire of preparation, feed quantity are fed by 3.4m/ tons steel, and the nitrogen fixation effect of the present embodiment and effect obtain bright
Aobvious to improve, recovery rate of the nitrogen in molten steel greatly improves.Cheap ferro-silicon nitride alloy (valency is selected in the present embodiment
Lattice are less than 8500 yuan/t) make main nitrogen pick-up strengthening material, add specific fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloy
The fixed nitrogen that powder makees N in ferro-silicon nitride uses, while reaches that deoxidation, desulphurizing ability are strong, and inclusion morphology control ability is strong, refinement
Crystal grain and dispersion-strengthened action are obvious, can effectively improve structure of steel performance.The present embodiment is high, good toughness high-quality using intensity
Mild-carbon steel strip, control covering machine speed are overmolding to density height, core powder full (core powder rice weight >=200g/m), intensity and toughness
Good, diameter is in Ф 9-13mm alloy core wire, the feeding wire machine use of suitable steel mill.It is good added with stability in the core-spun yarn of the present invention
Nitrogen killer, you can, also can be such as in production containing being used on the micro nitrogen killer steel grade of V, Nb, Al, Ti：RHB400 etc. is free of
Used on micro nitrogen killer steel grade, N recovery rates can be stablized more than 40%, be pretended in the precipitation of nitrogen with brilliant with rare earth fining
Grain, under dispersion-strengthened action, the microstructure and mechanical property of steel can be substantially improved, so as to reduce V-alloyed steel alloy dosage 25% with
On, manganese can drop more than 20 in the steel such as RHB400 without vanadium.Have applicability stronger than nitridation silicomanganese core-spun yarn, using production
Steel grade scope it is wider, it is more obvious to drop this advantage, can be widely used for non-hardened and tempered steel, high-strength thick H profile steel, tool steel, silicon
The steel such as steel, high-strength hot rolled ribbed steel bar produce.
For a kind of ferro-silicon nitride alloy claded wire of the present invention, it is further described as follows：1), using price more
Manufactured core-spun yarn based on the particle of cheap ferro-silicon nitride, N >=30% in ferro-silicon nitride, than nitridation silicomanganese, chromium nitride, nitrogen
8% will be higher by by changing the materials such as titanium, aluminium nitride, and the precipitation strength effect of nitrogen is more obvious.2), V, Nb, Al, Ti added in cored wire
One or more kinds of ferroalloys, compared to nitridation silicomanganese, chromium nitride, titanium nitride, Al, Ti, Cr, Si, Mn element in aluminium nitride,
More reduced under the cooperation of silicon base lanthanon alloy powder with steel oxygen react probability, stability is more preferable, nitrogen fixation effect and
Act on more obvious, N recovery rates are more than 40%.3), V, Nb, Al, Ti one or more ferroalloy fixed nitrogen are micro- in cored wire
Secondary element, you can, also can be such as in production containing being used on the micro nitrogen killer steel grade of V, Nb, Al, Ti：RHB400 etc. is without micro-
Used on amount nitrogen killer steel grade.Applicability is stronger, wider using the steel grade scope of production.(steel is accounted for for current production rate maximum
Muscle total amount more than 79%), civil buildings purposes it is widest not on V-alloyed steel RHB400, drop that this advantage is more obvious, and ton steel can
Cost declining 5-60 members.4) silicon base lanthanon alloy powder, is added in core powder, granularmetric composition accounts for 10-25%, 0.5-1mm in≤0.5mm
75-90% is accounted for, silicon base lanthanon alloy powder can be made to be uniformly filled in Silicon vanadium nitride iron particle, the core-spun yarn of cladding is more stepped up
It is close, it is important to can to have the function that to aid in fixed nitrogen alloying element ferroalloy to carry out fixed nitrogen by silicon base lanthanon alloy powder, together
When, by the effect of rare earth alloy element, it can effectively improve the structure property of micro alloyed steel containing V and Grain refinement is brighter
Aobvious, V micro alloyed steels grain size number can improve 1-2 grade, by improving and improving V micro alloyed steel mechanical properties, realize drop
The effect of low V micro alloyed steels alloy production cost is more obvious.5), added in the form of core-spun yarn in molten steel, can be by ferro-silicon nitride
Alloy claded wire feeding molten steel deep, reduces burning using specific fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloy powder
Damage or oxidation loss.Avoid in the prior art nitrogenous material easily aoxidized by steel water oxygen, nitrogen fixation effect is poor, and N recovery rates are unstable
Phenomenon.
Embodiment 2
A kind of preparation method of ferro-silicon nitride alloy claded wire of the present embodiment, its specific step are：
Step 1: ferro-silicon nitride alloy is stocked up
Ferro-silicon nitride alloy is crushed using disintegrating apparatus, the ferro-silicon nitride that will have been crushed using vibratory sieve after broken
Alloy is sieved into≤0.5mm, 0.5-1mm, 1-3mm powder, and dispensing is carried out according still further to following percentage by weight：Particle diameter≤0.5mm
Powder account for the 5% of ferro-silicon nitride alloy gross mass, particle diameter 0.5-1mm powder accounts for the 90% of ferro-silicon nitride alloy gross mass,
Particle diameter 1-3mm powder accounts for the 5% of ferro-silicon nitride alloy gross mass, and ferro-silicon nitride alloy is obtained after dispensing mixing, standby.
Step 2: fixed nitrogen alloying element ferroalloy is stocked up
Fixed nitrogen alloying element ferroalloy is crushed using disintegrating apparatus, consolidated after broken using vibratory sieve by what is crushed
Nitrogen alloying element ferroalloy is sieved into≤0.5mm, 0.5-1mm, 1-2mm powder, and dispensing is carried out according still further to following percentage by weight：
Particle diameter≤0.5mm powder accounts for the 10% of fixed nitrogen alloying element ferroalloy gross mass, and particle diameter 0.5-1mm powder accounts for fixed nitrogen alloy
The 80% of element ferroalloy gross mass, particle diameter 1-2mm powder account for the 10% of fixed nitrogen alloying element ferroalloy gross mass, and dispensing is mixed
Fixed nitrogen alloying element ferroalloy is obtained after conjunction, it is standby.Fixed nitrogen alloying element ferroalloy in the present embodiment uses ferrocolumbium and titanium
The mixing of ferroalloy, and the mass ratio of its mixing is 1：2.
Step 3: silicon base lanthanon alloy powder is stocked up
Silicon base lanthanon alloy is crushed using disintegrating apparatus, the silicon base lanthanon that will have been crushed using vibratory sieve after broken
Alloy is sieved into≤0.5mm, 0.5-1mm powder, and dispensing is carried out according still further to following percentage by weight：Particle diameter≤0.5mm powder
The 25% of silicon base lanthanon alloy powder gross mass is accounted for, particle diameter 0.5-1mm powder accounts for silicon base lanthanon alloy powder gross mass
75%, silicon base lanthanon alloy powder is obtained after dispensing mixing, it is standby.
Step 4: the preparation of core powder
70 parts of ferro-silicon nitride alloy, the fixed nitrogen alloying element ferroalloy in step 1 to step 3 are weighed by mass fraction
4.9 parts, 0.1 part of silicon base lanthanon alloy powder, by ferro-silicon nitride alloy, fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloyed powder
End mixes to obtain core powder.
Step 5: steel band coats core powder
Use thickness that the core powder in step 4 is overmolding to a diameter of 9.5mm core-spun yarn for 0.34mm steel band, produce
Ferro-silicon nitride alloy claded wire.Obtained ferro-silicon nitride alloy claded wire requires its core powder rice weight >=200g/m, ferro-silicon nitride
Meter Chong Liang >=390g/m of alloy claded wire, specifically core powder rice weight is 200g/m in the present embodiment, ferro-silicon nitride alloy bag
The meter Chong Liang of cored wire is 390g/m.
When producing RHB400 steel, after converter tapping alloying, the present embodiment is fed by feeding wire machine at ar blowing refining station
The ferro-silicon nitride alloy claded wire of preparation, feed quantity are fed by 3.4m/ tons steel, and the nitrogen fixation effect of the present embodiment and effect obtain bright
Aobvious to improve, recovery rate of the nitrogen in molten steel greatly improves.Other explanations in the present embodiment are the same as embodiment 1.
Embodiment 3
A kind of preparation method of ferro-silicon nitride alloy claded wire of the present embodiment, its specific step are：
Step 1: ferro-silicon nitride alloy is stocked up
Ferro-silicon nitride alloy is crushed using disintegrating apparatus, the ferro-silicon nitride that will have been crushed using vibratory sieve after broken
Alloy is sieved into≤0.5mm, 0.5-1mm, 1-3mm powder, and dispensing is carried out according still further to following percentage by weight：Particle diameter≤0.5mm
Powder account for the 10% of ferro-silicon nitride alloy gross mass, particle diameter 0.5-1mm powder accounts for the 80% of ferro-silicon nitride alloy gross mass,
Particle diameter 1-3mm powder accounts for the 10% of ferro-silicon nitride alloy gross mass, and ferro-silicon nitride alloy is obtained after dispensing mixing, standby.
Step 2: fixed nitrogen alloying element ferroalloy is stocked up
Fixed nitrogen alloying element ferroalloy is crushed using disintegrating apparatus, consolidated after broken using vibratory sieve by what is crushed
Nitrogen alloying element ferroalloy is sieved into≤0.5mm, 0.5-1mm, 1-2mm powder, and dispensing is carried out according still further to following percentage by weight：
Particle diameter≤0.5mm powder accounts for the 5% of fixed nitrogen alloying element ferroalloy gross mass, and particle diameter 0.5-1mm powder accounts for fixed nitrogen alloy
The 90% of element ferroalloy gross mass, particle diameter 1-2mm powder account for the 5% of fixed nitrogen alloying element ferroalloy gross mass, and dispensing is mixed
Fixed nitrogen alloying element ferroalloy is obtained after conjunction, it is standby.Fixed nitrogen alloying element ferroalloy in the present embodiment is using vanadium iron, ferro-niobium
The mixing of alloy, alfer, and the mass ratio of its mixing is 1：2：1.
Step 3: silicon base lanthanon alloy powder is stocked up
Silicon base lanthanon alloy is crushed using disintegrating apparatus, the silicon base lanthanon that will have been crushed using vibratory sieve after broken
Alloy is sieved into≤0.5mm, 0.5-1mm powder, and dispensing is carried out according still further to following percentage by weight：Particle diameter≤0.5mm powder
The 10% of silicon base lanthanon alloy powder gross mass is accounted for, particle diameter 0.5-1mm powder accounts for silicon base lanthanon alloy powder gross mass
90%, silicon base lanthanon alloy powder is obtained after dispensing mixing, it is standby.
Step 4: the preparation of core powder
95 parts of ferro-silicon nitride alloy, the fixed nitrogen alloying element ferroalloy in step 1 to step 3 are weighed by mass fraction
29.7 parts, 0.3 part of silicon base lanthanon alloy powder, by ferro-silicon nitride alloy, fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloy
Powder mixes to obtain core powder.
Step 5: steel band coats core powder
Use thickness that the core powder in step 4 is overmolding to a diameter of 13mm core-spun yarn for 0.45mm steel band, produce nitrogen
SiClx ferroalloy core-spun yarn.Obtained ferro-silicon nitride alloy claded wire requires its core powder rice weight >=200g/m, and ferro-silicon nitride closes
Meter Chong Liang >=390g/m of golden core-spun yarn, specifically core powder rice weight is 205g/m in the present embodiment, ferro-silicon nitride alloy cored
The meter Chong Liang of line is 400g/m.
When producing RHB400E steel, after converter tapping alloying, the present embodiment is fed by feeding wire machine at ar blowing refining station
The ferro-silicon nitride alloy claded wire of preparation, feed quantity are fed by 3.4m/ tons steel, and the nitrogen fixation effect of the present embodiment and effect obtain bright
Aobvious to improve, recovery rate of the nitrogen in molten steel greatly improves.Other explanations in the present embodiment are the same as embodiment 1.
Embodiment 4
A kind of preparation method of ferro-silicon nitride alloy claded wire of the present embodiment, its specific step are：
Step 1: ferro-silicon nitride alloy is stocked up
Ferro-silicon nitride alloy is crushed using disintegrating apparatus, the ferro-silicon nitride that will have been crushed using vibratory sieve after broken
Alloy is sieved into≤0.5mm, 0.5-1mm, 1-3mm powder, and dispensing is carried out according still further to following percentage by weight：Particle diameter≤0.5mm
Powder account for the 6% of ferro-silicon nitride alloy gross mass, particle diameter 0.5-1mm powder accounts for the 84% of ferro-silicon nitride alloy gross mass,
Particle diameter 1-3mm powder accounts for the 10% of ferro-silicon nitride alloy gross mass, and ferro-silicon nitride alloy is obtained after dispensing mixing, standby.
Step 2: fixed nitrogen alloying element ferroalloy is stocked up
Fixed nitrogen alloying element ferroalloy is crushed using disintegrating apparatus, consolidated after broken using vibratory sieve by what is crushed
Nitrogen alloying element ferroalloy is sieved into≤0.5mm, 0.5-1mm, 1-2mm powder, and dispensing is carried out according still further to following percentage by weight：
Particle diameter≤0.5mm powder accounts for the 9% of fixed nitrogen alloying element ferroalloy gross mass, and particle diameter 0.5-1mm powder accounts for fixed nitrogen alloy
The 85% of element ferroalloy gross mass, particle diameter 1-2mm powder account for the 6% of fixed nitrogen alloying element ferroalloy gross mass, and dispensing is mixed
Fixed nitrogen alloying element ferroalloy is obtained after conjunction, it is standby.Fixed nitrogen alloying element ferroalloy in the present embodiment uses ferrocolumbium and titanium
The mixing of ferroalloy, and the mass ratio of its mixing is 1：2.
Step 3: silicon base lanthanon alloy powder is stocked up
Silicon base lanthanon alloy is crushed using disintegrating apparatus, the silicon base lanthanon that will have been crushed using vibratory sieve after broken
Alloy is sieved into≤0.5mm, 0.5-1mm powder, and dispensing is carried out according still further to following percentage by weight：Particle diameter≤0.5mm powder
The 18% of silicon base lanthanon alloy powder gross mass is accounted for, particle diameter 0.5-1mm powder accounts for silicon base lanthanon alloy powder gross mass
82%, silicon base lanthanon alloy powder is obtained after dispensing mixing, it is standby.
Step 4: the preparation of core powder
87 parts of ferro-silicon nitride alloy, the fixed nitrogen alloying element ferroalloy in step 1 to step 3 are weighed by mass fraction
12.6 parts, 0.3 part of silicon base lanthanon alloy powder, by ferro-silicon nitride alloy, fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloy
Powder mixes to obtain core powder.
Step 5: steel band coats core powder
Use thickness that the core powder in step 4 is overmolding to a diameter of 12mm core-spun yarn for 0.40mm steel band, produce nitrogen
SiClx ferroalloy core-spun yarn.Obtained ferro-silicon nitride alloy claded wire requires its core powder rice weight >=200g/m, and ferro-silicon nitride closes
Meter Chong Liang >=390g/m of golden core-spun yarn, specifically core powder rice weight is 215g/m in the present embodiment, ferro-silicon nitride alloy cored
The meter Chong Liang of line is 395g/m.
When producing RHB500E steel, after converter tapping alloying, the present embodiment system is fed by feeding wire machine in LF refining furnace
Standby ferro-silicon nitride alloy claded wire, feed quantity are fed by 3.4m/ tons steel, and the nitrogen fixation effect of the present embodiment and effect obtain substantially
Improve, recovery rate of the nitrogen in molten steel greatly improves.Other explanations in the present embodiment are the same as embodiment 1.
Claims (3)
- A kind of 1. ferro-silicon nitride alloy claded wire, it is characterised in that：The ferro-silicon nitride alloy claded wire by steel band coat core powder and Into, described core powder is made up of ferro-silicon nitride alloy, fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloy powder, wherein：Core Powder each component is formed as follows by mass parts：Ferro-silicon nitride alloy 70-95 parts, fixed nitrogen alloying element ferroalloy 4.9-29.7 parts, silicon Base rare earth alloy powder 0.1-0.3 parts, above-mentioned fixed nitrogen alloying element ferroalloy and silicon base lanthanon alloy powder are used for nitrogen member Element is fixed in molten steel；Described fixed nitrogen alloying element ferroalloy is vanadium iron, ferrocolumbium, alfer, ferro-titanium In one or more kinds of mixing；Described ferro-silicon nitride alloy is made up of particle diameter for≤0.5mm, 0.5-1mm, 1-3mm powder, wherein, particle diameter≤0.5mm Powder account for the 5-10% of ferro-silicon nitride alloy gross mass, particle diameter 0.5-1mm powder accounts for the 80- of ferro-silicon nitride alloy gross mass 90%, particle diameter 1-3mm powder accounts for the 5-10% of ferro-silicon nitride alloy gross mass；Described fixed nitrogen alloying element ferroalloy is by grain Footpath is≤0.5mm, 0.5-1mm, 1-2mm powder composition, wherein, particle diameter≤0.5mm powder accounts for fixed nitrogen alloying element ferroalloy The 5-10% of gross mass, particle diameter 0.5-1mm powder account for the 80-90% of fixed nitrogen alloying element ferroalloy gross mass, particle diameter 1-2mm Powder account for the 5-10% of fixed nitrogen alloying element ferroalloy gross mass；Described silicon base lanthanon alloy powder by particle diameter for≤ 0.5mm, 0.5-1mm powder form, wherein, particle diameter≤0.5mm powder accounts for the 10- of silicon base lanthanon alloy powder gross mass 25%, particle diameter 0.5-1mm powder accounts for the 75-90% of silicon base lanthanon alloy powder gross mass, and silicon base lanthanon alloy powder The mass percent that element is required in composition is：RE is 30-35%, Si 30-35%.
- 2. a kind of preparation method of ferro-silicon nitride alloy claded wire, it is characterised in that its step is：Step 1: ferro-silicon nitride alloy is stocked upFerro-silicon nitride alloy is crushed using disintegrating apparatus, the ferro-silicon nitride alloy that will have been crushed using vibratory sieve after broken ≤ 0.5mm, 0.5-1mm, 1-3mm powder is sieved into, dispensing is carried out according still further to following percentage by weight：Particle diameter≤0.5mm powder Material accounts for the 5-10% of ferro-silicon nitride alloy gross mass, and particle diameter 0.5-1mm powder accounts for the 80- of ferro-silicon nitride alloy gross mass 90%, particle diameter 1-3mm powder accounts for the 5-10% of ferro-silicon nitride alloy gross mass, and ferro-silicon nitride alloy is obtained after dispensing mixing, standby With；Step 2: fixed nitrogen alloying element ferroalloy is stocked upFixed nitrogen alloying element ferroalloy is crushed using disintegrating apparatus, closed the fixed nitrogen crushed using vibratory sieve after crushing Gold element ferroalloy is sieved into≤0.5mm, 0.5-1mm, 1-2mm powder, and dispensing is carried out according still further to following percentage by weight：Particle diameter ≤ 0.5mm powder accounts for the 5-10% of fixed nitrogen alloying element ferroalloy gross mass, and particle diameter 0.5-1mm powder accounts for fixed nitrogen alloy member The 80-90% of plain sheet alloy gross mass, particle diameter 1-2mm powder account for the 5-10% of fixed nitrogen alloying element ferroalloy gross mass, match somebody with somebody Fixed nitrogen alloying element ferroalloy is obtained after material mixing, it is standby；Described fixed nitrogen alloying element ferroalloy is vanadium iron, ferro-niobium conjunction One or more kinds of mixing in gold, alfer, ferro-titanium；Step 3: silicon base lanthanon alloy powder is stocked upSilicon base lanthanon alloy is crushed using disintegrating apparatus, the silicon base lanthanon alloy that will have been crushed using vibratory sieve after broken ≤ 0.5mm, 0.5-1mm powder is sieved into, dispensing is carried out according still further to following percentage by weight：Particle diameter≤0.5mm powder accounts for silicon The 10-25% of base rare earth alloy powder gross mass, particle diameter 0.5-1mm powder account for the 75- of silicon base lanthanon alloy powder gross mass 90%, silicon base lanthanon alloy powder is obtained after dispensing mixing, it is standby；Step 4: the preparation of core powderFerro-silicon nitride alloy 70-95 parts in step 1 to step 3, fixed nitrogen alloying element ferroalloy are weighed by mass fraction 4.9-29.7 parts, silicon base lanthanon alloy powder 0.1-0.3 parts, by ferro-silicon nitride alloy, fixed nitrogen alloying element ferroalloy and silicon substrate Rare earth alloy powder mixes to obtain core powder, and its mixed process is specific as follows：First by the one of the silicon base lanthanon alloy powder weight weighed Partly it is added in fixed nitrogen alloying element ferroalloy, rare earth-fixed nitrogen alloy mixture is stirred to obtain in mixer；Then will claim Second half of the silicon base lanthanon alloy powder weight taken is added in ferro-silicon nitride alloy, is stirred in mixer dilute Soil-ferro-silicon nitride mixture；Above-mentioned rare earth-fixed nitrogen alloy mixture and rare earth-ferro-silicon nitride mixture are placed on stirring again Core powder is stirred to obtain in machine；Step 5: steel band coats core powderUse thickness that the core powder in step 4 is overmolding to a diameter of 9-13mm core-spun yarn for 0.34-0.45mm steel band, i.e., Obtain ferro-silicon nitride alloy claded wire.
- A kind of 3. preparation method of ferro-silicon nitride alloy claded wire according to claim 2, it is characterised in that：In step 2 Fixed nitrogen alloying element ferroalloy be vanadium iron, it is ferrocolumbium, alfer, one or more kinds of in ferro-titanium Mixing.
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| CN106636545A (en) * | 2016-11-18 | 2017-05-10 | 浙江宝信新型炉料科技发展有限公司 | High-titanium titanium-silicon nitride alloy core spun yarn |
| CN106399626A (en) * | 2016-11-18 | 2017-02-15 | 浙江宝信新型炉料科技发展有限公司 | Core-spun yarn high-titanium titanium-silicon nitride alloy powder containing rare earth, calcium, barium and molybdenum |
| CN106399627A (en) * | 2016-11-18 | 2017-02-15 | 浙江宝信新型炉料科技发展有限公司 | Core-spun yarn high-titanium titanium-silicon nitride alloy powder |
| CN106755726A (en) * | 2016-11-18 | 2017-05-31 | 浙江宝信新型炉料科技发展有限公司 | One kind contains rare earth, calcium, barium, molybdenum titanium titanium silicon nitride alloy claded wire high |
| CN106521086A (en) * | 2016-11-18 | 2017-03-22 | 浙江宝信新型炉料科技发展有限公司 | Core-spun-yarn high-titanium titanium-silicon-nitride alloy powder containing rare earth, niobium, vanadium and boron |
| CN106521087A (en) * | 2016-11-18 | 2017-03-22 | 浙江宝信新型炉料科技发展有限公司 | Titanium-silicon nitride alloy cored wire |
| CN106566912A (en) * | 2016-11-18 | 2017-04-19 | 浙江宝信新型炉料科技发展有限公司 | Titanium-silicon nitride alloy powder of core-spun yarns |
| CN106591537A (en) * | 2016-11-18 | 2017-04-26 | 浙江宝信新型炉料科技发展有限公司 | Rare earth, niobium, vanadium and boron-contained titanium silicon nitride alloy core-spun yarn |
| CN106636546A (en) * | 2016-11-18 | 2017-05-10 | 浙江宝信新型炉料科技发展有限公司 | Core spun yarn titanium-silicon nitride alloy powder containing rare earth, calcium, barium and molybdenum |
| CN106399628A (en) * | 2016-11-18 | 2017-02-15 | 浙江宝信新型炉料科技发展有限公司 | Core-spun yarn containing rare earth, niobium, vanadium, boron titanium-silicon nitride alloy powder |
| CN106702085A (en) * | 2016-11-19 | 2017-05-24 | 浙江宝信新型炉料科技发展有限公司 | Solid calcium metal, ferrosilicon and titanium-silicon nitride alloy powder composite core spun yarn |
| CN106624465B (en) * | 2016-12-08 | 2019-07-26 | 河海大学常州校区 | A kind of hardfacing electrode and preparation method thereof |
| CN107557653A (en) * | 2017-09-14 | 2018-01-09 | 马鞍山市兴达冶金新材料有限公司 | Micro- nitrogen alloy and its technique for producing high strength cast iron |
| CN107674938B (en) * | 2017-09-18 | 2019-12-03 | 苏州元联科技创业园管理有限公司 | High nitrogen alloy core-spun yarn |
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| CN104046728A (en) * | 2013-12-06 | 2014-09-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Cored wire, its application, vanadium and nitrogen alloyed molten steel, preparation method of vanadium and nitrogen alloyed molten steel, and vanadium and nitrogen micro-alloyed steel |
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