CN202558883U - Composition metal calcium-wire cored wire for steel-making deoxidization - Google Patents
Composition metal calcium-wire cored wire for steel-making deoxidization Download PDFInfo
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- CN202558883U CN202558883U CN2012201595472U CN201220159547U CN202558883U CN 202558883 U CN202558883 U CN 202558883U CN 2012201595472 U CN2012201595472 U CN 2012201595472U CN 201220159547 U CN201220159547 U CN 201220159547U CN 202558883 U CN202558883 U CN 202558883U
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- calcium
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- steel
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Abstract
The utility model discloses a composition metal calcium-wire cored wire for steel-making deoxidization. The composition metal calcium-wire cored wire for the steel-making deoxidization comprises a calcium-wire inner core and a strip steel outer skin, and the calcium-wire inner core is wrapped by the strip steel outer skin. A silicon iron powder layer or a reduced iron powder layer is filled and pressed between the calcium-wire inner core and the strip steel outer skin. The diameter of the calcium-wire inner core is 5-8 millimeters. The thickness of the strip steel outer skin is 0.35-0.45 millimeter. The composition metal calcium-wire cored wire for the steel-making deoxidization has the advantages of strong penetrating power. The calcium-wire inner core is wrapped by the silicon iron powder layer or the reduced iron powder layer. When the composition metal calcium-wire cored wire is fed, the composition metal calcium-wire cored wire can reach below critical depth of calcium, and the calcium reacts with molten steel before calcium steam is formed. Consequently, yielding rate of the calcium is increased, use amount is less and cost is reduced. At the same time, a core body of the cored wire is composed of the calcium wire and the silicon iron powder layer or the reduced iron powder layer. Compared with a traditional silico-calcium alloy cored wire and a calcium iron cored wire, the specific surface area of powders is greatly decreased, and oxidation is not easy to occur. In addition, secondary oxidation is also not easy to occur due to the fact that iron powders are not contained.
Description
Technical field
The utility model relates to metallurgical field of steel-making, especially relates to a kind of composition metal calcium filement core thread that is used for deoxidation in steel making.
Background technology
Outside stove, molten steel is carried out calcium with the form of cored-wire and handles, promptly molten steel is carried out desulfurization, changes the form of inclusion in the molten steel, to improve the castability of molten steel, be 20th century late nineteen seventies begin to develop the technology of appearance.China starts from the eighties initial stage in last century to the research of wire-feeding technique; Through nearly 30 years development; This technology is quite ripe; Become important key link in the modern steel production, external refining equipment has all been equipped by nearly all steel mill at present, and the cored-wire of feeding is still all having bigger development on quality and kind on the output.But the specific surface area of calcium powder is big in calcium iron wire commonly used, the calcium aluminum steel, is prone to produce oxidation, and the iron powder in the isochrone also causes secondary oxidation easily; Common cored-wire is because belt steel thickness is thinner, do not reach during line feeding critical depth that calcium exists with liquid form in molten steel just reaction finish, part metals calcium has just been run away with the form of calcium steam before reaction, causes the yield of calcium low; Pure calcium silk thread causes the molten steel splash easily because reaction is fierce, and the use of pure calcium silk thread is restricted.
Summary of the invention
Can be deeply when the purpose of the utility model is to provide a kind of line feeding to the critical depth of calcium and the higher composition metal calcium filement core thread that is used for deoxidation in steel making of the yield of calcium.
For realizing above-mentioned purpose, the utility model can be taked following technical proposals:
The described composition metal calcium filement core thread that is used for deoxidation in steel making of the utility model comprises calcium silk inner core and the band steel crust that coats said calcium silk inner core, between said calcium silk inner core and band steel crust, has tamped ferrosilicon powder or reduced iron bisque.
The diameter of said calcium silk inner core is 5-8mm.
The thickness of said band steel crust is 0.35-0.45mm.
The advantage of the utility model is that penetrativity is strong; Owing to be wrapped with ferrosilicon powder or reduced iron bisque at calcium silk inner core; Cored-wire can reach below the critical depth of calcium during line feeding; Calcium does not just react with molten steel before forming calcium steam, has improved the yield of calcium, and consumption still less can also reduce cost; Simultaneously the cored-wire core body is made up of calcium silk and ferrosilicon powder or reduced iron bisque, compares with traditional silicon calcium alloy cored-wire, ferro-calcium core-spun yarn, and the specific surface area of powder is dwindled greatly, is difficult for producing oxidation, does not have the existence of iron powder simultaneously, also difficult generation secondary oxidation.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
As shown in Figure 1; The described composition metal calcium filement core thread that is used for deoxidation in steel making of the utility model; Comprise that diameter is that the calcium metal silk inner core 1 of 5-8mm and the thickness of clad metal calcium silk inner core 1 are the band steel crust 2 of 0.35-0.45mm, has tamped ferrosilicon powder or reduced iron bisque 3 between calcium metal silk inner core 1 and band steel crust 2; The granularity of used ferrosilicon powder or iron powder is less than 3mm, and the diameter of the finished product composite core-spun yarn of processing is generally 12-16mm.
Claims (3)
1. composition metal calcium filement core thread that is used for deoxidation in steel making; Comprise the band steel crust (2) of calcium silk inner core (1) and the said calcium silk inner core of coating (1), it is characterized in that: between said calcium silk inner core (1) and band steel crust (2), tamped ferrosilicon powder or reduced iron bisque (3).
2. the composition metal calcium filement core thread that is used for deoxidation in steel making according to claim 1, it is characterized in that: the diameter of said calcium silk inner core (1) is 5-8mm.
3. the composition metal calcium filement core thread that is used for deoxidation in steel making according to claim 1, it is characterized in that: the thickness of said band steel crust (2) is 0.35-0.45mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201595472U CN202558883U (en) | 2012-04-16 | 2012-04-16 | Composition metal calcium-wire cored wire for steel-making deoxidization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201595472U CN202558883U (en) | 2012-04-16 | 2012-04-16 | Composition metal calcium-wire cored wire for steel-making deoxidization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202558883U true CN202558883U (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201595472U Expired - Lifetime CN202558883U (en) | 2012-04-16 | 2012-04-16 | Composition metal calcium-wire cored wire for steel-making deoxidization |
Country Status (1)
| Country | Link |
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| CN (1) | CN202558883U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618696A (en) * | 2012-04-16 | 2012-08-01 | 郑州万隆冶金炉料有限公司 | Composite calcium metal wire cored wire for steelmaking deoxygenation and production method thereof |
-
2012
- 2012-04-16 CN CN2012201595472U patent/CN202558883U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618696A (en) * | 2012-04-16 | 2012-08-01 | 郑州万隆冶金炉料有限公司 | Composite calcium metal wire cored wire for steelmaking deoxygenation and production method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121128 |