CN110106310A - It is a kind of to fill out core high density composite core-spun yarn for the seamless of deoxidation in steel making - Google Patents
It is a kind of to fill out core high density composite core-spun yarn for the seamless of deoxidation in steel making Download PDFInfo
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- CN110106310A CN110106310A CN201910353315.7A CN201910353315A CN110106310A CN 110106310 A CN110106310 A CN 110106310A CN 201910353315 A CN201910353315 A CN 201910353315A CN 110106310 A CN110106310 A CN 110106310A
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- Prior art keywords
- core
- spun yarn
- high density
- calcium
- seamless
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
- C21C7/0645—Agents used for dephosphorising or desulfurising
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses it is a kind of for deoxidation in steel making it is efficient it is seamless fill out core high density composite core-spun yarn, it is two part of the inner core composition by outer layer pipe；Inner core is mixed-powder, this kind of powder composition expression formula: Ca45-55%-Si20-28%-Mg3-5%-Ba4-7%-Fe(surplus), wherein calcium is added with pure calcium grain, magnesium with magnesium grain, silicon with ferrosilicon grain, barium is with the addition of barium abrasive grit, surplus is abrasive grit, and various granularities are all at 0.1-3 millimeters.Its manufacturing process includes: that steel band shapes-fills out powder-compacting-welding-drawing-and batches, and fills out the mixed powder density of core 2.2 or so.Seamless core high density composite core-spun yarn of filling out provided by the invention can slow down the vapour pressure and gasification rate of calcium, calcium is improved in the solubility of molten steel, refine crystal grain, improve the form of field trash, increase the depth for inserting in molten steel, the boiling of molten steel is reduced, the time that metallic element is absorbed by molten steel is reduced, pulvis core-spun yarn (low-density) is overcome and hollow or core powder weight unevenness occurs and influence the phenomenon that feeding silk.
Description
Technical field
Core high density composite core-spun yarn is filled out for the seamless of deoxidation in steel making the present invention relates to a kind of.
Background technique
In steel smelting procedure, furnace outer refining process is widely applied.Furnace outer refining process can further desulfurization, de-
Oxygen and inclusions class meet the need of industrial and agricultural development construction to produce the ordinary steel and steel alloy of higher quality
It asks.Purification of molten steel processing is that molten steel deep is added in calcium metal, aluminium or alloy with jet metaurgy or injection feeding technology, reaches deoxidation, takes off
Sulphur, the furnace outer refining technology for making the metallurgical effects such as nonmetal inclusion denaturation.Since calcium metal fusing point is low (843 DEG C), low boiling point
(1450 DEG C) are easily floated on steel slag surface in molten steel and are reacted and scaling loss with the oxygen in air and the oxide in slag liquid
Fall.In addition, the vapour pressure of calcium is very high, entering molten steel contact, molten steel boils quickly quickly, and calcium is caused hardly to incorporate in molten steel, because
This, nearly all using such as seamed CaSi core-spun yarn (Ca28% ~ 32%) (vapour pressure that silicon can reduce calcium), CaFe in reality production
(Ca is about 30%, Fe about 70%) (increasing specific gravity), seamed solid calcium core-spun yarn, seamless solid core calcium core-spun yarn to core-spun yarn, and is located
Molten metal deep is added to when reason as far as possible, using the static pressure of molten metal, make calcium before becoming calcium bubble i.e. with oxygen, the sulphur in steel
Etc. reacting, it is unlikely to add and reforms into calcium bubble floating and lose, a small amount of addition of magnesium increases the effect of desulfurization.?
The seamed CaSi core-spun yarn (Ca28% ~ 32%) of overall cost in above-mentioned core-spun yarn, CaFe core-spun yarn (Ca be about 30%, Fe about
70%) manufacturing cost is relatively minimum, but calcium recovery rate is low during use, and it is empty to be primarily due to powder core-spun yarn inner core
Gap is larger, burns up quickly after contact molten steel and is not in time for reaction just burn-up, causes the recovery rate of calcium is lower (in contrast to compare
Low 30% or so) of pure calcium line, causes environmental pollution worker laboring environment to deteriorate at the same time.In contrast, seamed and seamless solid
Calcium core-spun yarn effect is preferable.In addition, CaSi, CaF é or a kind of alloy of Ca-Si-Al-Fe cannot all pass through melting and casting-extruding etc.
Method becomes solid solid-state wire rod, when being cast as alloy when having second or third element content is more than 10%, that is to say, that becomes
Not at solid wire rod, unless such cost is higher using jet metaurgy method.In view of this situation, novel steelmaking of the invention
Deoxidation it is seamless fill out core high density composite core-spun yarn the advantage is that: (1) due to compound core-spun line density it is higher can with it is solid
The comparable recovery rate for being inserted into molten steel deep and improving calcium of core-spun yarn；(2) due to containing silicon and barium and silicon barium calcium in composite core-spun yarn
It is deeper to form depth when compacting combines the vapour pressure for reducing calcium to insert in molten steel, and silicon barium is capable of increasing solubility of the calcium in steel,
Change inclusion morphology；(3) manufacturing cost substantially reduces, this is because the seamed and seamless solid cored calcium line of manufacture will be through
Cross smelting-casting-extruding-spiral technique-cladding etc., process flow is long, manufacturing cost include smelting cost, refining cost,
Casting cost and squeeze cost and cladding cost or welding cost etc., and it is seamless fill out core high density composite core-spun yarn, only calcium grain,
The manufacturing cost of magnesium grain, ferrosilicon grain, barium abrasive grit manufactures one ton of about 3200 yuan of solid cored calcium line manufacturing cost by measuring and calculating,
And manufacture composite core-spun yarn cost and there was only 2500 yuan or so, so, seamless core high density composite core-spun yarn of filling out is manufactured than seamless
Solid core calcium core-spun yarn at least reduces by 700 yuan or so, and effect is almost as solid calcium core-spun yarn or even the recovery rate of calcium is higher
A bit.(4) since a small amount of silicon barium element is added, the form of field trash is changed, the quality of steel billet is improved, magnesium elements add
Enter to increase desulfurization effect.
Summary of the invention
To solve the problems, such as existing seamed and seamless solid core calcium core-spun yarn manufacturing cost, the present invention provides a kind of low cost refinings
The seamless of steel-deoxidizing fills out core high density composite core-spun yarn.
In order to achieve the above technical purposes, the technical scheme is that, it is a kind of to fill out core height for the seamless of deoxidation in steel making
Density composite core-spun yarn, including as outer layer without seam welded tube and as inner core impurity summation not higher than 3wt% to fill out core highly dense
Spend composite core-spun yarn.
It is described it is a kind of fill out core high density composite core-spun yarn for the seamless of deoxidation in steel making, described fills out core high density composite
Core-spun yarn powder includes: calcium grain, magnesium grain, ferrosilicon grain, barium abrasive grit and abrasive grit.
It is described it is a kind of fill out core high density composite core-spun yarn for the seamless of deoxidation in steel making, described fills out core high density composite
Powder calcium content 45-55%, silicone content 20-28%, content of magnesium 3-5%, barium content 4-7% in core-spun yarn, surplus is abrasive grit.
It is described a kind of to fill out core high density composite core-spun yarn, manufacturing process for the seamless of deoxidation in steel making are as follows: steel band at
Shape-is filled out powder-compacting-welding-rolling-drawing-and is batched, and fills out the mixed powder density of core compacting in 2.0-2.2 or so, fills out the straight of core
Diameter is 7.5-8.5mm, and section ratio is 1.875.
It is described it is a kind of fill out core high density composite core-spun yarn for the seamless of deoxidation in steel making, the outer layer without seam welded tube
For mild steel, outer layer with a thickness of 0.8-1.0 mm.
The above-mentioned seamless preparation method for filling out core high density composite core-spun yarn for deoxidation in steel making, comprising the following steps:
Step 1: calcium grain of the calcium grain using impurity summation not higher than 3% is raw material, by ingredient 45-55% calcium, magnesium grain presses magnesium 3-5%, silicon
Content 20-28%, barium content 4-7%, surplus are iron proportion, wherein silicon is added in the form of ferrosilicon, and barium is added in the form of barium iron, respectively
The size of kind powder particles is 0.1-3mm；
Step 2: various powders and steel band are sent into high-frequency welding unit simultaneously, and by compressing, welding and roll, drawing, most
Whole composite core-spun yarn is that diameter is 9.5-10.5 millimeters.
A kind of seamless method for filling out core high density composite core-spun yarn prepared for deoxidation in steel making, institute in step 1
The core high density composite cored line density of filling out stated is 2-2.2, diameter 7.5-8.5mm.
A kind of seamless method for filling out core high density composite core-spun yarn prepared for deoxidation in steel making, institute in step 2
The steel band stated be mild steel steel band, steel band with a thickness of 0.8-1.0mm.
A kind of seamless method for filling out core high density composite core-spun yarn prepared for deoxidation in steel making, institute in step 2
The welding unit stated includes the gatherer for positioning and importing steel band and powder, for crimping the molding that steel band is tubulose
Roller, the welding rolls for welding steel band and tube reducing roller, Rolling roller and the pulling rolls of drawing for adjustment package inner core diameter, it is described
Gatherer, forming roller, welding rolls and Rolling roller and pulling rolls successively sequentially arrange.
The technical effects of the invention are that composite core-spun yarn dissolves uniformly in molten steel, due to containing silicon barium member in core-spun yarn
Element reduces the vapour pressure of calcium, deeper than common powder silicon-calcium wire insertion molten steel；Due to increasing desulfurization effect containing magnesium, because
This (1) increases calcium in the residence time of molten steel, increases the solubility of calcium, and more calcium and oxygen reaction of Salmon-Saxl is made to form compound
It floats；(2) relative to common silicon-calcium wire, seamless core high density composite core-spun yarn is filled out since inner core powder density improves to improve
Elevated temperature strength also increases the depth of composite core-spun yarn insertion molten steel, further than seamed and seamless solid calcium core-spun yarn
It improves calcium metal recovery rate and shortens the Calcium treatment time, reached and seamed and seamless solid core calcium core-spun yarn is similarly imitated
Fruit；Pulvis calcium core-spun yarn is overcome hollow or core powder weight unevenness occur and influence the phenomenon that feeding silk；(3) compound core-spun of the present invention
Line is due to being also seamless, so will not bring air in molten steel into, this reduces the splashes after entrance molten steel；(4) due to
Desulfurization effect is increased containing magnesium；(5) most importantly manufacturing cost than seamless solid core calcium core-spun yarn at least reduces by 700 yuan.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is that a kind of seamless structure for filling out one preferred embodiment of core high density composite core-spun yarn for deoxidation in steel making of the present invention is shown
It is intended to；
The components in the drawings are labeled as follows: 1, outer layer without seam welded tube；2, core high density composite core-spun yarn is filled out.
Specific embodiment
Embodiment 1
Step 1: the high density composite powder with impurity summation not higher than 3% is as inner core, powder calcium content 45%, silicone content
28%, barium content 5%, surplus are iron；Since sulphur is lower in the molten steel that has, so magnesium elements are not added.
Step 2: pressing mentioned component, calcium grain, ferrosilicon grain, barium iron, abrasive grit and steel band are sent into welding unit simultaneously, and pass through
Cross compression, welding, rolling and drawing.
Wherein the granularity of various powders described in step 1 is 0.1-3, and steel band described in step 2 is mild-carbon steel strip,
Steel band with a thickness of 1.0mm.
Density of the high density powder described in step 2 by compressing, after welding, rolling and drawing is 2.0, diameter
For 7.5mm, finished product composite core-spun yarn outer diameter is 9.5 millimeters.
Embodiment 2
Step 1: the high density composite powder with impurity summation not higher than 3% is as inner core, powder calcium content 55%, silicone content
25%, barium content 7%, content of magnesium 5%, surplus are iron；
Step 2: pressing mentioned component, calcium grain, magnesium grain, ferrosilicon grain, barium iron, abrasive grit and steel band are sent into welding unit simultaneously, and pass through
Cross compression, welding, rolling and drawing.
Wherein the granularity of various powders described in step 1 is 0.1-3, and steel band described in step 2 is mild-carbon steel strip,
Steel band with a thickness of 1.0mm.
Density of the high density powder described in step 2 by compressing, after welding, rolling and drawing is 2.0, diameter
For 8.5mm, finished product composite core-spun yarn outer diameter is 10.5 millimeters.
Claims (5)
1. a kind of fill out core high density composite core-spun yarn for the seamless of deoxidation in steel making, which is characterized in that including the nothing as outer layer
Seam welded tube fills out core high density composite core-spun yarn as inner core, and the impurity summation for filling out core high density composite core-spun yarn is not
High density higher than 3wt% fills out core calcium grain, magnesium grain, ferrosilicon grain, barium abrasive grit and aluminum shot composite core-spun yarn, and surplus is abrasive grit.
2. it is according to claim 1 it is a kind of fill out core high density composite core-spun yarn for the seamless of deoxidation in steel making, feature exists
In the granularity control for filling out calcium grain in core high density composite core-spun yarn, magnesium grain, ferrosilicon grain, aluminum shot and iron is in 0.1-3 milli
Rice.
3. it is according to claim 1 it is a kind of fill out core high density cored recombination line for the seamless of deoxidation in steel making, feature exists
In, the calcium content filled out in core high density composite core-spun yarn in 45-55%, silicone content 20-28%, content of magnesium 3-5%,
For barium content in 5-7%, surplus is iron.
4. it is according to claim 1 or 2 it is a kind of fill out core high density composite core-spun yarn for the seamless of deoxidation in steel making, manufacture
Technique includes: that steel band shapes-fills out powder-compacting-welding-rolling-drawing-and batches, and fills out the mixed powder density of core compacting on 2.2 left sides
The right side, the diameter for filling out core is 7.5-8.5mm.
5. it is according to claim 1 it is a kind of fill out core high density composite core-spun yarn for the seamless of deoxidation in steel making, feature exists
Without seam welded tube be mild steel in, the outer layer, the outer layer without seam welded tube outer layer with a thickness of 0.8-1.0 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910353315.7A CN110106310A (en) | 2019-04-29 | 2019-04-29 | It is a kind of to fill out core high density composite core-spun yarn for the seamless of deoxidation in steel making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910353315.7A CN110106310A (en) | 2019-04-29 | 2019-04-29 | It is a kind of to fill out core high density composite core-spun yarn for the seamless of deoxidation in steel making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110106310A true CN110106310A (en) | 2019-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910353315.7A Withdrawn CN110106310A (en) | 2019-04-29 | 2019-04-29 | It is a kind of to fill out core high density composite core-spun yarn for the seamless of deoxidation in steel making |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115383069A (en) * | 2022-09-17 | 2022-11-25 | 陕西斯瑞扶风先进铜合金有限公司 | Preparation method and application of copper-iron alloy core-spun wire rod |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363692A (en) * | 2001-01-10 | 2002-08-14 | 张海军 | Composite Si-Ca-Ba-Mg deoxidizing agent and its preparing process |
| RU2443785C1 (en) * | 2010-09-27 | 2012-02-27 | Закрытое акционерное общество "ФЕРРОСПЛАВ" | Flux cored wire filler for out-of-furnace treatment of metallurgical melts |
| US20150267272A1 (en) * | 2012-11-09 | 2015-09-24 | Affival | Cored wire for the metallurgical treatment of a bath of molten metal and corresponding method |
| CN108588328A (en) * | 2018-04-20 | 2018-09-28 | 无锡市伟达包芯线厂 | A kind of alloying pellet welding core-spun yarn production technology |
-
2019
- 2019-04-29 CN CN201910353315.7A patent/CN110106310A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363692A (en) * | 2001-01-10 | 2002-08-14 | 张海军 | Composite Si-Ca-Ba-Mg deoxidizing agent and its preparing process |
| RU2443785C1 (en) * | 2010-09-27 | 2012-02-27 | Закрытое акционерное общество "ФЕРРОСПЛАВ" | Flux cored wire filler for out-of-furnace treatment of metallurgical melts |
| US20150267272A1 (en) * | 2012-11-09 | 2015-09-24 | Affival | Cored wire for the metallurgical treatment of a bath of molten metal and corresponding method |
| CN108588328A (en) * | 2018-04-20 | 2018-09-28 | 无锡市伟达包芯线厂 | A kind of alloying pellet welding core-spun yarn production technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115383069A (en) * | 2022-09-17 | 2022-11-25 | 陕西斯瑞扶风先进铜合金有限公司 | Preparation method and application of copper-iron alloy core-spun wire rod |
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Application publication date: 20190809 |
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