CN101914655B - Method for manufacturing solid cored-wires made of high purity calcium metal - Google Patents
Method for manufacturing solid cored-wires made of high purity calcium metal Download PDFInfo
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- CN101914655B CN101914655B CN201010242754XA CN201010242754A CN101914655B CN 101914655 B CN101914655 B CN 101914655B CN 201010242754X A CN201010242754X A CN 201010242754XA CN 201010242754 A CN201010242754 A CN 201010242754A CN 101914655 B CN101914655 B CN 101914655B
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- calcium
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- steel
- calcium metal
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- 239000011575 calcium Substances 0.000 title claims abstract description 92
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 91
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 55
- 239000002184 metal Substances 0.000 title claims abstract description 55
- 239000007787 solid Substances 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 101710205660 Calcium-transporting ATPase Proteins 0.000 claims description 9
- 101710134161 Calcium-transporting ATPase sarcoplasmic/endoplasmic reticulum type Proteins 0.000 claims description 9
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 9
- 238000005266 casting Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000010622 cold drawing Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 8
- 238000007670 refining Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052728 basic metal Inorganic materials 0.000 description 1
- 150000003818 basic metals Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
A method for manufacturing solid cored-wires made of high purity calcium metal is characterized by comprising the following operating steps: (1) manufacturing calcium metal into calcium metal pumps; (2) processing calcium wires; and (3) synchronously drawing the calcium wires. The invention manufactures the calcium steel common core wires closely integrating inner solid cored-wires made of calcium metal and an outer steel jacket. The calcium steel common core wires do not have the problem of calcium oxidation, thus the shelf life can be prolonged by 3-5 years. The wires are standard in diameter, uniform in density and accurate in measurement. The thickness of the outer steel jacket is 1-2mm which is about 3 times that of the steel strips for the existing products. The outer jacket has high strength, thus avoiding broken wire accidents. The thickness can ensure the product to enter and melt near the ladle bottom plate in the molten steel under the temperature over 1600 DEG C. The calcium reacts in the deep part of the molten steel, the molten steel is fully processed, less calcium is lost and the calcium absorption rate is high. The solid cored-wires are made of electrolytic calcium metal with purity of 99% and have high purity, less impurities and high calcium absorption rate.
Description
Technical field
The present invention relates to the furnace outer refining technology field, the manufacture method of the solid cored-wires made of high purity calcium metal that uses in specifically a kind of iron and steel enterprise external refining process.
Background technology
The present situation that the metal current calcium core-spun yarn is used:
Calcium metal cored wire is a kind of product that uses in iron and steel enterprise's external refining process.Furnace outer refining technology is the mature technology that at present domestic and international iron and steel enterprise raising steel quality, production high-quality steel generally adopt, and in the external refining process molten steel is carried out the calcium processing and can change inclusion Al
2O
3, MnS form, reduce its fusing point, improve the flowability of al-killed molten steel, improve molten steel castability in the casting process, solve the sticking problem that easily causes nozzle clogging of molten steel.
Because calcium metal density is little, the fusing point boiling point is low, easy oxidization burning loss when going into molten steel, therefore calcium metal is broken into certain surmising (or making the calcium silk), with the cold-rolled low carbon steel band its parcel is become a matrix material (being usually said cored-wire) with random length then, then by means of line feeding (silk) machine, make the cored-wire of specified length pass slag blanket with certain speed, and arrival is equipped with near the ladle bottom of molten steel, along with the continuous fusing of cored-wire at this place, calcium metal is added chemical reaction in the molten steel, and Here it is adopts the calcium metal cored wire technology that molten steel is carried out the principle that calcium is handled.
The corporate boss will adopt cold-rolled low carbon steel band coated metal calcium grain (or mixing a certain proportion of iron powder) to produce the calcium metal cored wire technology both at home and abroad at present, has small part enterprise to adopt cold-rolled low carbon steel band coated metal calcium silk to produce the calcium metal cored wire technology abroad.
The domestic and international above iron and steel enterprise of scale all purchases calcium metal cored wire and is used to produce high-quality steel such as thin plate, low carbon low silicon, oil pipeline, and annual requirement is about 150,000 tons.
Because the singularity of calcium metal: active basic metal, easy deterioration by oxidation, characteristics such as density is little, and the fusing point boiling point is low are to the production of calcium metal cored wire, use following some particular requirement is arranged;
1. the steel band parcel is tight as far as possible, and cloudy disconnected air contact reduces deterioration by oxidation.
2. cored-wire include the calcium metal amount must uniformity so that accurate measurement calcium metal add-on.
Postpone to melt to arrive the bottom position of ladle after the intensity of 3. wrapping up steel band wants to satisfy the molten steel of putting into more than 1600 ℃, guarantee the abundant reaction between calcium metal and the molten steel, improve the specific absorption of calcium, reduce scaling loss.
4. calcium metal purity will guarantee, improves to add efficient.
The ubiquitous deficiency of current domestic and international calcium metal cored wire product shows the following aspects:
1. it is not tight that steel band wraps up mutual seaming pressing, and interior metal calcium grain is loose, the easy deterioration by oxidation of calcium grain, and the shelf lives is short.
When 2. the metal current calcium core-spun yarn is produced, must mix the former iron powder of 50-60%, increase linear density, because granules of metal Ca is relevant bigger with the aerated density of iron powder, and the artificial batch mixing of most of employing, the homogeneity of batch mixing can't guarantee that objectively the calcium content of unit cored-wire is inconsistent, causes the add-on of calcium metal can't accurate measurement.
3. because the objective limitation of envelope curve technology, thickness of strips is generally at 0.3-0.6mm, the broken string accident often takes place when causing line feeding easily, this thickness can't guarantee in time in the molten steel more than 1600 ℃ simultaneously, cored-wire can not just melt near entering into the bottom of ladle, but melt in advance, cause short, molten steel of calcium and molten steel reaction times handle insufficient, the calcium loss amount is big, calcium absorptivity is low.
4. present domestic production calcium metal cored wire, that adopts all generally that thermit reduction produces goes back the protocalcium grain owing to there is not purification techniques, the purity of calcium between 80-90%, cause calcium absorptivity low, to the secondary pollution of molten steel.
Summary of the invention
The purpose of this invention is to provide a kind of manufacture method that replaces the solid cored-wires made of high purity calcium metal of calcium grain, steel bushing replacement steel band with calcium line.
The object of the present invention is achieved like this: a kind of manufacture method of solid cored-wires made of high purity calcium metal is characterized in that: it includes following operation steps:
(1) calcium metal is made the metal calcium pump: utilize the vacuum melting casting equipment with calcium metal when the vacuum oven internal heating is melted up to 950 ℃, carry out vacuum casting, be cast into calcium pump;
(2) processing calcium line: calcium pump is heated to 375 ℃ ± 10 ℃ in horizontal heater, joins horizontal extruder and pushes, the extruding calcium line;
(3) drawing synchronously and welding: calcium line is packed in the Low Carbon Steel Pipe, connect cold drawing bench and carry out synchronous drawing, be drawn into the solid cored-wires made of high purity calcium metal that outer steel sleeve thickness is 1-2mm.
Calcium metal purity in the described step (1) is greater than 99%.
Before step (3) drawing synchronously, calcium line and Low Carbon Steel Pipe are welded synchronously, guarantee that drawing is uninterrupted.
What the present invention produced is interior calcium metal solid wire, and there is not the problem of calcium oxidation in the combine closely same heart yearn of calcium steel of one of outer steel sleeve, and the shelf lives can prolong 3-5; Its line footpath standard, density are even, and metering accurately; Outer steel sleeve thickness 1-2mm is currently available products about 3 times with thickness of strips, overcoat intensity height, the broken string accident does not take place, this thickness can guarantee that this product melts enter into the ladle base plate in the molten steel more than 1600 ℃ near, calcium is handled fully at the reaction of molten steel depths, molten steel, the calcium loss is few, the calcium absorptivity height; The present invention is made by the electrolytic metal calcium of purity 99%, and purity height, impurity are few, the calcium absorptivity height.
Embodiment
The manufacture method of solid cored-wires made of high purity calcium metal includes following operation steps:
(1) purity is made the metal calcium pump greater than 99% calcium metal: utilize vacuum melting casting equipment calcium metal when the vacuum oven internal heating is melted up to 950 ℃, carry out vacuum casting, be cast into the calcium pump of diameter 100mm, long 400-450mm;
(2) processing calcium line: calcium pump is heated to 375 ℃ ± 10 ℃ in horizontal heater, adds horizontal extruder and pushes, and is squeezed into the calcium line of diameter 14mm;
(3) drawing synchronously: the calcium line of diameter 14mm is packed in the Low Carbon Steel Pipe of internal diameter 15mm, be drawn into the solid cored-wires made of high purity calcium metal that outer steel sleeve thickness is 1-2mm.
In order to make drawing uninterrupted continuously, can make the solid cored-wires made of high purity calcium metal of sufficient length continuously, before step (3) drawing synchronously, calcium line and Low Carbon Steel Pipe are welded synchronously, guarantee that drawing is uninterrupted.
With solid cored-wires made of high purity calcium metal, be rolled into the inner drawing type drum with wire reel, drum is taken off from spiral, bind with thin steel band, the external application plastics film twines, and the steel frame of packing into is sealed.
Realized purpose of the present invention in sum.
Claims (3)
1. the manufacture method of a solid cored-wires made of high purity calcium metal, it is characterized in that: it includes following operation steps:
(1) calcium metal is made the metal calcium pump: utilize the vacuum melting casting equipment with calcium metal when the vacuum oven internal heating is melted up to 950 ℃, carry out vacuum casting, be cast into calcium pump;
(2) processing calcium line: calcium pump is heated to 375 ℃ ± 10 ℃ in horizontal heater, joins horizontal extruder and pushes, the extruding calcium line;
(3) drawing synchronously: calcium line is packed in the Low Carbon Steel Pipe, connect cold drawing bench and carry out synchronous drawing, be drawn into the solid cored-wires made of high purity calcium metal that outer steel sleeve thickness is 1-2mm.
2. the manufacture method of solid cored-wires made of high purity calcium metal according to claim 1, it is characterized in that: the calcium metal purity in the described step (1) is greater than 99%.
3. the manufacture method of solid cored-wires made of high purity calcium metal according to claim 1 is characterized in that: before step (3) drawing synchronously, calcium line and Low Carbon Steel Pipe are welded synchronously, guarantee that drawing is uninterrupted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010242754XA CN101914655B (en) | 2010-08-03 | 2010-08-03 | Method for manufacturing solid cored-wires made of high purity calcium metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010242754XA CN101914655B (en) | 2010-08-03 | 2010-08-03 | Method for manufacturing solid cored-wires made of high purity calcium metal |
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| Publication Number | Publication Date |
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| CN101914655A CN101914655A (en) | 2010-12-15 |
| CN101914655B true CN101914655B (en) | 2011-11-23 |
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| CN201010242754XA Active CN101914655B (en) | 2010-08-03 | 2010-08-03 | Method for manufacturing solid cored-wires made of high purity calcium metal |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382940A (en) * | 2011-10-27 | 2012-03-21 | 内蒙古包钢钢联股份有限公司 | Optimized method for feeding high-calcium wire at steel galvanized cold-rolled common (SGCC) steel refining station |
| CN102424892A (en) * | 2011-11-28 | 2012-04-25 | 秦皇岛双轮环保科技有限公司 | Preparation method of pure calcium filament used for clean steel production |
| CN102417950B (en) * | 2011-11-28 | 2014-04-02 | 巩义市众鑫钙业有限公司 | Seamless calcium line and preparation method thereof |
| CN102424891A (en) * | 2011-12-09 | 2012-04-25 | 郑州万隆冶金炉料有限公司 | Production method of pure calcium solid-core core spun threads for smelting steel |
| CN102719609B (en) * | 2012-06-26 | 2014-06-25 | 巩义市众鑫钙业有限公司 | Seamless aluminum calcium iron wire and preparation method thereof |
| CN103525976A (en) * | 2012-07-01 | 2014-01-22 | 秦皇岛北方管业有限公司 | Solid metal cored wire and preparation method thereof |
| CN102787208A (en) * | 2012-08-24 | 2012-11-21 | 济南钢铁集团总公司测温仪器厂 | Pure calcium cored wire for steelmaking |
| CN102808063A (en) * | 2012-08-31 | 2012-12-05 | 石晓峰 | Method for manufacturing calcium metal core-spun yarn of high purity |
| CN104789737A (en) * | 2015-05-04 | 2015-07-22 | 罗文斌 | Preparing method of injection type seamless pure-calcium core spun yarn for steel smelting and deoxygenation |
| CN108728660B (en) * | 2018-06-20 | 2020-07-17 | 中国恩菲工程技术有限公司 | Copper slag dilution method |
| CN108728659B (en) * | 2018-06-20 | 2020-08-11 | 中国恩菲工程技术有限公司 | Method for depleting nickel slag |
| CN112642868B (en) * | 2020-12-04 | 2021-09-14 | 中国科学院力学研究所 | Device and method for batch production of thermocouple transient heat flow sensors |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2300655Y (en) * | 1997-03-31 | 1998-12-16 | 田强喜 | Core cabling wire |
| EP1713941A1 (en) * | 2004-02-11 | 2006-10-25 | Tata Steel Limited | A cored wire injection process in steel melts |
| JP5302562B2 (en) * | 2008-03-28 | 2013-10-02 | 三菱重工業株式会社 | Metal melting crucible and method for producing the same |
| CN101381794A (en) * | 2008-10-23 | 2009-03-11 | 马鞍山市江南钢业有限公司 | Calcium-aluminium core cabling wire |
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Owner name: BEIJING HUAZHONG RUIDA TECHNOLOGY DEVELOPMENT CO., Free format text: FORMER OWNER: SHENYANG WUFEI CHARGING CO., LTD. Effective date: 20140207 |
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Inventor after: Shi Xiaofeng Inventor after: Hou Wei Inventor before: Yue Gang Inventor before: Dong Ping |
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Free format text: CORRECT: INVENTOR; FROM: YUE GANG DONG PING TO: SHI XIAOFENG HOU WEI Free format text: CORRECT: ADDRESS; FROM: 110003 SHENYANG, LIAONING PROVINCE TO: 100097 HAIDIAN, BEIJING |
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Effective date of registration: 20140207 Address after: 100097, No. 3, unit 6, Shuguang garden, dawn garden, hope River Park, Haidian District, Beijing, 1902 Patentee after: Beijing Huazhong Ruida Technology Development Co.,Ltd. Address before: 110003 5A, building 62C, 215 Riverside Garden, youth Avenue, Shenhe District, Liaoning, Shenyang Patentee before: Shenyang Wufei Charging Co., Ltd. |
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Effective date of registration: 20180621 Address after: 110006 room 5A, building 62C, Riverside Garden, 215 Youth Street, Shenhe District, Shenyang, Liaoning. Patentee after: Shenyang Huitong Yuanda Metallurgy Technology Co. Ltd Address before: 100097 unit 3, unit 6, Shuguang garden, Shuguang garden, Haidian District, Beijing, China. Patentee before: Beijing Huazhong Ruida Technology Development Co.,Ltd. |
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