JPH05279724A - Additive for steel making - Google Patents
Additive for steel makingInfo
- Publication number
- JPH05279724A JPH05279724A JP10858492A JP10858492A JPH05279724A JP H05279724 A JPH05279724 A JP H05279724A JP 10858492 A JP10858492 A JP 10858492A JP 10858492 A JP10858492 A JP 10858492A JP H05279724 A JPH05279724 A JP H05279724A
- Authority
- JP
- Japan
- Prior art keywords
- additive
- iron
- steel
- addition
- grains
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、鋼材を製造する際の洗
浄剤として使用する製鋼用添加剤に関し、特に、Ｃａの
添加歩留りを大幅に向上させた製鋼用添加剤に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steelmaking additive used as a cleaning agent in the production of steel products, and more particularly to a steelmaking additive having a significantly improved Ca addition yield.
【０００２】[0002]
【従来の技術】鋼材等を製造する際の洗浄剤として、溶
鋼中に添加する添加剤が用いられる。従来の製鋼用添加
剤として、例えば、Ｃａ−Ｓｉ−Ｆｅで構成された、所
謂、フェロカルシリ塊と呼ばれるペレット状の添加剤が
あり、この添加剤の成分比は、Ｃａが１０％，Ｓｉが６
０％，Ｆｅが３０％となっている。2. Description of the Related Art Additives to be added to molten steel are used as detergents when manufacturing steel materials and the like. As a conventional additive for steelmaking, for example, there is a so-called ferrocalcili lump pellet-shaped additive made of Ca-Si-Fe, and the component ratio of this additive is that Ca is 10% and Si is 6%.
0% and Fe are 30%.
【０００３】また、他の製鋼用添加剤として、例えば、
図２に示されるワイヤー状の添加剤がある。この添加剤
は、線状の芯材１と、この芯材１の外周を被覆する被覆
材２との二重構造となっており、芯材１は添加剤として
機能を発揮するもので、例えば、ＣａやＣａ−Ａｌが使
用される。被覆材２は前記芯材１を収納すると共に保護
する役目を果たし、主に鉄が使用される。Other additives for steelmaking include, for example,
There is a wire-like additive shown in FIG. This additive has a double structure of a linear core material 1 and a coating material 2 that coats the outer periphery of the core material 1. The core material 1 functions as an additive. , Ca and Ca-Al are used. The coating material 2 serves to house and protect the core material 1, and mainly iron is used.
【０００４】このようなワイヤー状の添加剤は、図３に
示すようにチップ状に切断され、溶鋼等に添加して使用
される。Such a wire-like additive is cut into chips as shown in FIG. 3 and added to molten steel for use.
【０００５】[0005]
【発明が解決しようとする課題】しかし、従来の製鋼用
添加剤によると、ペレット状の添加剤にあっては、Ｃａ
成分が剥き出しになっており、添加剤の投下と同時にＣ
ａが反応し、更に溶湯への浸入度が小さいうちに激しく
反応するため、Ｃａの蒸発が促進してＣａの添加歩留り
が著しく低下させる。このため、もともとＣａ成分が１
０％と少ないこの添加剤では、添加剤としての機能を果
たすことが困難となっている。また、この添加剤はＳｉ
を嫌う鋼種に適用することができない。However, according to the conventional steelmaking additive, in the case of the pelletized additive, Ca is
The components are exposed, and at the same time the additive is dropped, C
Since a reacts and reacts violently while the degree of penetration into the molten metal is small, the evaporation of Ca is promoted and the yield of Ca addition is significantly reduced. Therefore, the Ca component was originally 1
With this additive as small as 0%, it is difficult to function as an additive. Also, this additive is Si
Can not be applied to steel types that hate.
【０００６】一方、ワイヤー状の添加剤にあってはチッ
プ状に切断した切断面を介してＣａ成分が剥き出しにな
るため、前述したように添加剤の投下と同時にＣａの反
応が始まり、進度の小さいうちに激しく反応して、Ｃａ
の添加歩留りを低下させている。On the other hand, in the case of the wire-shaped additive, the Ca component is exposed through the cut surface cut into chips, so that the reaction of Ca starts at the same time as the addition of the additive as described above, and the progress of Reacts violently while being small, Ca
The addition yield of is reduced.
【０００７】従って、本発明の目的は鋼種に関係なく添
加でき、かつ、Ｃａの添加歩留りを向上させることがで
きる製鋼用添加剤を提供することである。Therefore, it is an object of the present invention to provide an additive for steelmaking which can be added regardless of the steel type and can improve the yield of Ca addition.
【０００９】[0009]
【課題を解決するための手段】本発明は上記問題点に鑑
み、鋼種に関係なく添加でき、かつ、Ｃａの添加歩留り
を向上させるため、Ｃａ，Ａｌ等の粒状の添加基剤と、
所定の割合で前記添加基剤に混入される鉄粒より成る芯
材を、鉄系の被覆材で密封した製鋼用添加剤を提供する
ものである。In view of the above problems, the present invention can be added regardless of the steel type, and in order to improve the Ca addition yield, a granular additive base such as Ca or Al,
The present invention provides an additive for steelmaking, in which a core material made of iron particles mixed in a predetermined ratio with a core material is sealed with an iron-based coating material.
【００１０】前記添加基剤の粒度は、大きいもので０．
１ｍｍ粒，小さいもので０．００５ｍｍ粒で、一般には
０．０２〜０．０８ｍｍ粒を用いている。また、添加基
剤の成分としては、上記に限定するものではなく添加に
必要な物質で粒状のものであれば全て適用でき、Ｍｎ，
Ｍｇ，Ｔｉ，ボロン，ＭＭ（ミッシュメタル），Ｍｇ等
を適用することができる。The particle size of the above-mentioned additive base is large and is 0.
1 mm grains, 0.005 mm grains for small ones, and generally 0.02 to 0.08 mm grains are used. Further, the components of the additive base are not limited to the above, and any substances that are necessary for addition and are granular can be applied.
Mg, Ti, boron, MM (Misch metal), Mg, etc. can be applied.
【００１１】前記被覆材は鉄板，ステンレス板等より成
り、その板厚は０．１〜２．０ｍｍの間から適宜選択さ
れ、一般には０．２〜０．６ｍｍのものを用いてる。The covering material is made of an iron plate, a stainless plate or the like, and the plate thickness thereof is appropriately selected from the range of 0.1 to 2.0 mm, and generally 0.2 to 0.6 mm is used.
【００１２】[0012]
【作用】上記構成を有する本発明の製鋼用添加剤は、添
加基剤を被覆材で密封しているため、Ｃａの剥き出しを
防ぐことができ、溶湯へ添加剤を投下したときにＣａの
早期反応を抑え、Ｃａの蒸発を遅延させることができ
る。また、添加基剤に混入された鉄粒によって添加剤の
比重を高めることができ、Ｃａの溶湯への浸入度を大き
くすることができる。このようにＣａの蒸発を遅延さ
せ、Ｃａの溶湯への浸入度を大きくすることにより、Ｃ
ａの添加歩留りを大幅に向上させることができる。ま
た、添加基剤にＳｉを混入させないと、如何なる鋼種に
も添加することができるようになる。With the steelmaking additive of the present invention having the above-mentioned structure, since the additive base is hermetically sealed with the coating material, it is possible to prevent Ca from being exposed, and when the additive is dropped into the molten metal, it is possible to reduce the amount of Ca at an early stage. The reaction can be suppressed and the evaporation of Ca can be delayed. Moreover, the specific gravity of the additive can be increased by the iron particles mixed in the additive base, and the degree of penetration of Ca into the molten metal can be increased. In this way, by delaying the evaporation of Ca and increasing the degree of penetration of Ca into the molten metal, C
The yield of addition of a can be significantly improved. Further, if Si is not mixed in the additive base, it can be added to any steel type.
【００１３】[0013]
【実施例】以下、本発明の製鋼用添加剤を詳細に説明す
る。EXAMPLES The steelmaking additive of the present invention will be described in detail below.
【００１４】図１には、本発明の一実施例に係る製鋼用
添加剤の構成が示されている。この添加剤は、粒状の添
加基剤１１と鉄粒１２を混合して成る芯材１４を被覆材
１４で密封して構成されている。FIG. 1 shows the composition of a steelmaking additive according to an embodiment of the present invention. This additive is formed by sealing a core material 14 formed by mixing a granular additive base 11 and iron particles 12 with a coating material 14.
【００１５】添加基剤１１は粒状のＣａ，Ａｌ等より成
り、その粒度は大きいもので０．１ｍｍ粒，小さいもの
で０．００５ｍｍ粒で、一般には０．０２〜０．０８ｍ
ｍ粒を用いている。また、添加剤１１の成分としては、
上記に限定するものではなく添加に必要な物質で粒状の
ものであれば全て適用でき、Ｍｎ，Ｍｇ，Ｔｉ，ボロ
ン，ＭＭ（ミッシュメタル），Ｍｇ等を適用することが
できる。The additive base 11 is made of granular Ca, Al, etc., and the large grain size is 0.1 mm grain, the small grain size is 0.005 mm grain, generally 0.02 to 0.08 m.
It uses m grains. In addition, as a component of the additive 11,
The present invention is not limited to the above, and any granular material that is necessary for addition can be applied, and Mn, Mg, Ti, boron, MM (Misch metal), Mg, or the like can be applied.
【００１６】鉄粒１２は、上記添加基剤１１とほぼ同等
の粒度のものを用いている。The iron particles 12 have the same particle size as the additive base material 11.
【００１７】被覆材１４は鉄板，ステンレス板等より成
り、その板厚は０．１〜２．０ｍｍの間から適宜選択さ
れ、一般には０．２〜０．６ｍｍのものを用いてる。The covering material 14 is made of an iron plate, a stainless steel plate or the like, and the thickness thereof is appropriately selected from the range of 0.1 to 2.0 mm, and generally 0.2 to 0.6 mm is used.
【００１８】この製鋼用添加剤は、芯材１４を丸棒状に
形成すると共に、その外周に被覆材１３を被覆してワイ
ヤー状とし、これをチップ状に切断するときに両端を閉
塞することによって得ることができる。This steelmaking additive is obtained by forming the core material 14 in the shape of a round bar, coating the coating material 13 on the outer periphery thereof into a wire shape, and closing both ends when cutting this into a chip shape. Obtainable.
【００１９】このような製鋼用添加剤は、芯材１４を被
覆材１３で密封しているため、添加基剤１１に含まれる
Ｃａの剥き出しを防ぐことができ、溶湯（図示せず）へ
添加剤を投下したときのＣａの早期反応を抑え、Ｃａの
蒸発を遅延させることができる。また、添加基剤１１に
混入された鉄粒１２によって添加剤の比重を高めること
ができ、Ｃａの溶湯への浸入度を大きくすることができ
る。このようにＣａの蒸発を遅延させ、Ｃａの溶湯への
浸入度を大きくすることにより、添加歩留りを大幅に向
上させることができる（従来のＣａ−Ｓｉ−Ｆｅ添加剤
の２〜３％の歩留りを５〜１０％レベルアップ）。ま
た、添加基剤１１にＳｉを混入させないと、如何なる鋼
種にも添加することができるようになる。更に、添加基
剤１１は空気と接触しなくなるため、空気中の酸素や水
分等によるＣａの変質を抑制することができる。Since such a steelmaking additive seals the core material 14 with the coating material 13, it is possible to prevent the Ca contained in the additive base material 11 from being exposed, and to add it to the molten metal (not shown). The early reaction of Ca when the agent is dropped can be suppressed and the evaporation of Ca can be delayed. Further, the specific gravity of the additive can be increased by the iron particles 12 mixed in the additive base 11, and the degree of infiltration of Ca into the molten metal can be increased. Thus, by delaying the evaporation of Ca and increasing the degree of infiltration of Ca into the molten metal, the addition yield can be significantly improved (the yield of the conventional Ca-Si-Fe additive is 2 to 3%). 5-10% level up). Further, if Si is not mixed in the additive base material 11, it can be added to any steel type. Furthermore, since the additive base material 11 does not come into contact with air, it is possible to suppress the alteration of Ca due to oxygen, moisture, etc. in the air.
【００２０】[0020]
【発明の効果】以上説明したように、本発明の製鋼用添
加剤によると、Ｃａ，Ａｌ等の粒状の添加基剤と、所定
の割合で前記添加基剤に混入される鉄粒より成る芯材
を、鉄系の被覆材で密封したため、鋼種に関係なく添加
でき、かつ、Ｃａの添加歩留りを向上させることができ
る。As described above, according to the additive for steelmaking of the present invention, a core made of granular additive base such as Ca and Al and iron particles mixed in the additive base at a predetermined ratio. Since the material is sealed with the iron-based coating material, it can be added regardless of the steel type, and the yield of Ca addition can be improved.
【図１】本発明の一実施例を示す断面図。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】従来の製鋼用添加剤を示す説明図。FIG. 2 is an explanatory view showing a conventional steelmaking additive.
【図３】従来の別の製鋼用添加剤を示す説明図。FIG. 3 is an explanatory view showing another conventional steelmaking additive.
１ 芯材 ２ 被覆
材 １１ 添加基剤 １２ 鉄粒 １３ 被覆材 １４ 芯材1 core material 2 coating material 11 additive base 12 iron particles 13 coating material 14 core material
Claims (1)
の割合で前記添加基剤に混入される鉄粒より成る芯材
を、鉄系の被覆材で密封したことを特徴とする製鋼用添
加材。1. A core material composed of a granular additive base material such as Ca and Al and iron particles mixed in the additive base material at a predetermined ratio is sealed with an iron-based coating material. Additive for steelmaking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10858492A JPH05279724A (en) | 1992-04-01 | 1992-04-01 | Additive for steel making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10858492A JPH05279724A (en) | 1992-04-01 | 1992-04-01 | Additive for steel making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05279724A true JPH05279724A (en) | 1993-10-26 |
Family
ID=14488519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10858492A Pending JPH05279724A (en) | 1992-04-01 | 1992-04-01 | Additive for steel making |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05279724A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120144955A1 (en) * | 2004-06-12 | 2012-06-14 | Iron Mount Corporation | Method and apparatus for carrying out a metallurgical process |
| CN102965472A (en) * | 2012-11-27 | 2013-03-13 | 魏书林 | Cast steel purifying agent and production method thereof |
-
1992
- 1992-04-01 JP JP10858492A patent/JPH05279724A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120144955A1 (en) * | 2004-06-12 | 2012-06-14 | Iron Mount Corporation | Method and apparatus for carrying out a metallurgical process |
| CN102965472A (en) * | 2012-11-27 | 2013-03-13 | 魏书林 | Cast steel purifying agent and production method thereof |
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