JPH05317916A - Production of s-free cutting austenitic stainless steel - Google Patents
Production of s-free cutting austenitic stainless steelInfo
- Publication number
- JPH05317916A JPH05317916A JP7464692A JP7464692A JPH05317916A JP H05317916 A JPH05317916 A JP H05317916A JP 7464692 A JP7464692 A JP 7464692A JP 7464692 A JP7464692 A JP 7464692A JP H05317916 A JPH05317916 A JP H05317916A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- austenitic stainless
- hot
- free
- content
- 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.)
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- Continuous Casting (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、Ｓ快削オーステナイト
ステンレス鋼の製造方法、詳述すれば、無手入れで連続
鋳造鋳片からＳ快削オーステナイトステンレス鋼を製造
する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing S free-cutting austenitic stainless steel, and more particularly to a method for producing S free-cutting austenitic stainless steel from an uncast, continuously cast slab.
【０００２】[0002]
【従来の技術】従来より、Ｓ快削オーステナイトステン
レス鋼は一般にSUS304ステンレス鋼に比べ快削性が良
く、時計側用材等の用途に使用されている。しかし、Ｓ
入ステンレス鋼のため熱間加工性が悪く、ヘゲ疵と称す
る表面欠陥や、耳割れ等の欠陥の出易い鋼種であった。2. Description of the Related Art Conventionally, S free-cutting austenitic stainless steel generally has better free-cutting properties than SUS304 stainless steel and is used as a material for timepieces. But S
Since it was stainless steel containing, it had poor hot workability, and was a type of steel that was prone to surface defects called bald spots and defects such as ear cracks.
【０００３】ヘゲ疵や耳割れが一旦発生すると表面手入
れ作業費用や歩留りロスが増大し、製造原価や製造納期
の面で問題となる。最近では、製造コストの大幅な削減
を実現すべく工程の連続化が企図されるようになってき
ており、そのような問題に対し早急な改善が求められて
いる。Once a bald spot or an ear crack occurs, surface maintenance work cost and yield loss increase, which poses a problem in terms of manufacturing cost and delivery time. Recently, it has been attempted to make the process continuous so as to realize a large reduction in manufacturing cost, and an urgent improvement is required for such a problem.
【０００４】従来より、Ｓ快削オーステナイトステンレ
ス鋼については、鋼組成の面からは、δフェライト量を
ある範囲にコントロールしたり、Caを一定量添加し、か
つ酸素量を一定量以下にして硫化物形態を制御すること
により、熱間加工性が改善されることは良く知られてい
る。例えば、特開昭56−90959 号公報参照。Conventionally, S free-cutting austenitic stainless steels are sulfurized from the viewpoint of steel composition by controlling the amount of δ ferrite within a certain range, adding a certain amount of Ca, and keeping the amount of oxygen below a certain amount. It is well known that the hot workability is improved by controlling the material form. See, for example, JP-A-56-90959.
【０００５】これまでのように連続鋳造鋳片を手入れし
てから熱間圧延を行うことで厚板を製造する場合にはこ
れらの対策でも一定限度の効果はあった。しかし、今日
求められているように、製造原価を低減する目的で無手
入れの連続鋳造鋳片から熱間圧延してヘゲ疵等の表面疵
のない厚板を製造するには、上述のような従来法だけで
は十分でないことが判明した。In the case of producing a thick plate by carrying out hot rolling after caring for continuously cast slabs as in the past, these measures had a certain limit of effect. However, as is required today, in order to reduce the manufacturing cost, hot rolling from unmaintained continuous cast slabs to produce thick plates without surface flaws such as bald spots is required as described above. It turned out that the conventional method alone is not enough.
【０００６】[0006]
【発明が解決しようとする課題】ここに、本発明の目的
は、連続鋳造鋳片の熱間圧延に際して、無手入れで熱間
圧延しても、ヘゲ疵などの表面欠陥や耳割れなどの欠陥
のないＳ快削オーステナイトステンレス鋼の製造方法を
提供することである。SUMMARY OF THE INVENTION An object of the present invention is to provide a continuous cast slab with hot rolling without maintenance, such as surface defects such as bald spots and edge cracks. It is an object of the present invention to provide a method for producing a defect-free S free-cutting austenitic stainless steel.
【０００７】[0007]
【課題を解決するための手段】そこで、本発明者らは、
かかる課題を解決すべく種々検討を重ねたところ、次の
ような知見を得て、本発明を完成した。Therefore, the present inventors have
As a result of various studies to solve the above problems, the present invention has been completed with the following knowledge.
【０００８】従来のように鋳片手入れする場合には除
去され問題とならなかった鋳片表層部のピンホールが問
題であること、 Ｓ研削オーステナイトステンレス鋼のＮ含有量をある
範囲に制限するとともに、いわゆるCa処理を行ってCa含
有量をある範囲にコントロールすることで組成的にピン
ホールの生成を抑制できること、そして 従来は連続鋳造の際のブレークアウト、ノロ噛み、そ
してデプレッションマーク形成をそれぞれ防止するため
に下向き浸漬ノズルを用いていたのに対して、むしろピ
ンホールの溶鋼内部での捕捉、介在物の溶鋼内部への侵
入、捕捉を促進するには上向き浸漬ノズルを用いて連続
鋳造することが有効であって、それにより熱間変形能が
良くかつピンホールの少ない連続鋳造鋳片を製造するこ
とができること。[0008] A problem is pinholes in the surface layer of the slab, which was not a problem when the slab was conventionally cared for, and the N content of S-ground austenitic stainless steel was limited to a certain range. By controlling the Ca content within a certain range by performing so-called Ca treatment, it is possible to suppress the formation of pinholes compositionally, and conventionally, breakout, slag biting, and depletion mark formation during continuous casting are prevented respectively. In order to promote the capture of pinholes inside the molten steel, the penetration of inclusions into the molten steel, and the capture, continuous casting is performed using the upward immersion nozzle, while the downward immersion nozzle was used to Is effective, and thereby it is possible to produce a continuously cast slab having good hot deformability and few pinholes.
【０００９】ここに、本発明の要旨とするところは、重
量割合で、Ｎ含有量を0.010 ％以上0.025 ％以下に制限
したＳ快削オーステナイトステンレス鋼の溶鋼にCa処理
を施してCa含有量を５〜60ppm に調整した後、溶鋼吐出
角度が上向き10°以上20°以下の浸漬ノズルを使って連
続鋳造し、次いで熱間圧延することを特徴とする、Ｓ快
削オーステナイトステンレス鋼の製造方法である。Here, the gist of the present invention is to perform Ca treatment on the molten steel of S free-cutting austenitic stainless steel whose N content is limited to 0.010% or more and 0.025% or less in terms of weight ratio to thereby increase the Ca content. A method for producing S free-cutting austenitic stainless steel, characterized in that after being adjusted to 5 to 60 ppm, the molten steel discharge angle is continuously cast using an immersion nozzle with an upward angle of 10 ° to 20 ° and then hot rolled. is there.
【００１０】本発明は、ヘゲ疵などの表面欠陥や耳割れ
などの欠陥の防止を図るためにのものであって、そのよ
うな問題が生じる限り、特定組成のものに制限されず、
一般にＳ快削オーステナイトステンレス鋼の製造方法と
して効果的である。The present invention is intended to prevent surface defects such as bald spots and defects such as ear cracks, and is not limited to a specific composition as long as such a problem occurs.
Generally, it is effective as a method for producing S free-cutting austenitic stainless steel.
【００１１】[0011]
【作用】次に、本発明において製造条件を上述のように
限定した理由を説明する。なお、本明細書において特に
ことわりがない限り、「％」は「質量％」である。Next, the reason why the manufacturing conditions are limited as described above in the present invention will be explained. In the present specification, "%" means "mass%" unless otherwise specified.
【００１２】無手入れ連続鋳造鋳片から表面疵のない熱
間圧延鋼板を製造するには、全体の熱間加工性を向上さ
せることは勿論であるが、併せて鋳片表層部のピンホー
ルも減少させる必要がある。従来のＳ快削オーステナイ
トステンレス鋼について、連続鋳造鋳片を無手入れで熱
間圧延した場合における鋳片表層部のピンホール数とヘ
ゲ疵の関係を図１に示すがピンホールが多い程ヘゲ疵が
多いことがわかる。ヘゲ疵はヘゲ発生指数によって示
す。In order to produce a hot-rolled steel sheet without surface flaws from unmaintened continuous cast slab, it goes without saying that the hot workability as a whole is improved, but in addition, pinholes in the surface layer of the slab are also included. Need to reduce. Regarding conventional S free-cutting austenitic stainless steel, Fig. 1 shows the relationship between the number of pinholes on the surface layer of the slab and the bald defects when continuously casting the slab and hot rolling it without care. You can see that there are many defects. The baldness is indicated by the baldness index.
【００１３】本発明によれば、オーステナイトステンレ
ス鋼の溶鋼を用意し、そのＮ含有量を0.010 〜0.025 ％
に制限するとともにCaを添加するCa処理を行う。According to the present invention, molten steel of austenitic stainless steel is prepared, and its N content is 0.010 to 0.025%.
Calcium is added and Ca is added.
【００１４】ヘゲ疵を減少させるには熱間変形能の向上
が必要であるが、Ｎ含有量が低下するにつれ熱間変形能
は改善され、0.025 ％以下に制限することで熱間変形能
向上効果が顕著になる。Ｎ含有量を0.010 ％より低減す
るには脱Ｎ処理など特殊な操業が必要であるため、かえ
って製造コストの上昇を招く恐れがあることから、Ｎ含
有量は0.010 〜0.025 ％に制限する。It is necessary to improve the hot deformability in order to reduce the baldness, but the hot deformability is improved as the N content decreases, and the hot deformability is limited to 0.025% or less. The improvement effect becomes remarkable. Since a special operation such as N removal treatment is required to reduce the N content to less than 0.010%, it may rather increase the manufacturing cost. Therefore, the N content is limited to 0.010 to 0.025%.
【００１５】Ca処理は、熱間加工性改善のために行うの
であって、Ca合金鉄の形態でCaを溶鋼に添加して介在物
の形態制御を行う。Ca量が5 〜60ppm 、好ましくは5 〜
20ppm とすることでピンホールは減少し、それにつれて
ヘゲ疵も減少する。The Ca treatment is carried out in order to improve hot workability, and the form of inclusions is controlled by adding Ca to the molten steel in the form of Ca alloy iron. Ca amount of 5 to 60 ppm, preferably 5 to
With 20ppm, the number of pinholes decreases, and the number of bald spots decreases accordingly.
【００１６】すでに述べたように、本発明にあっては、
連続鋳造鋳片のピンホールが問題である限り、その対象
とする鋼組成は制限されないが、本発明の作用効果が最
も顕著に発揮されるのは下記組成のＳ快削オーステナイ
トステンレス鋼である。As described above, according to the present invention,
The target steel composition is not limited as long as the pinhole of the continuous cast slab is a problem, but the S-free-cutting austenitic stainless steel having the following composition shows the most remarkable effect of the present invention.
【００１７】したがって、本発明の好適態様にあって
は、対象となる溶鋼の鋼組成は次の通りである。Therefore, in the preferred embodiment of the present invention, the steel composition of the molten steel to be used is as follows.
【００１８】 Ｃ: 0.08％以下、 Si: 1.0 ％以下、 Mn: 2.0 ％以下、 Ｐ: 0.040 ％以下、 Ｓ: 0.04％以上0.14％以下、 Ni: 8.00％以上10.00
％以下、 Cr: 17.00 ％以上19.00 ％以下、Ca: 5ppm以上 20ppm未
満、 Ｎ: 0.010 ％以上0.025 ％以下、 Fe: 残部 さらに、連続鋳造鋳片全体の熱間加工性を改善するに
は、前述のＮ含有量と同時に、δフェライト量を示す次
式で算出されるNi−Bal をある範囲の中にコントロール
することが好ましい。C: 0.08% or less, Si: 1.0% or less, Mn: 2.0% or less, P: 0.040% or less, S: 0.04% or more and 0.14% or less, Ni: 8.00% or more 10.00
% Or less, Cr: 17.00% or more and 19.00% or less, Ca: 5ppm or more and less than 20ppm, N: 0.010% or more and 0.025% or less, Fe: Remainder Furthermore, in order to improve the hot workability of the continuous cast slab as described above, It is preferable to control Ni-Bal calculated by the following equation indicating the amount of δ ferrite within a certain range at the same time as the N content of.
【００１９】 Ni−Bal ＝30×([%C]+[%N])+0.5 ×[%Mn]+[%Ni]+8.2 −1.1×｛[%Cr]+1.5 ×[%Si]+[%Mo]｝ このコントロール範囲は、Ni−Bal が−2.1 以上で−1.
4 以下である。この範囲にコントロールすれば、ヘゲ疵
は大幅に改善される。Ni−Bal = 30 × ([% C] + [% N]) + 0.5 × [% Mn] + [% Ni] +8.2 −1.1 × {[% Cr] + 1.5 × [% Si] + [% Mo]} This control range is −1.
4 or less. By controlling to this range, the baldness is greatly improved.
【００２０】本発明によれば、鋳片表層部のピンホール
を無くすにはCa処理をしてかつ連続鋳造時溶鋼吐出角度
が10〜20度上向きの浸漬ノズルを使用する。According to the present invention, in order to eliminate the pinholes in the surface layer of the cast slab, a dipping nozzle that is Ca-treated and has a molten steel discharge angle of 10 to 20 degrees upward during continuous casting is used.
【００２１】図２は本発明において用いる浸漬ノズルの
溶鋼吐出孔の近傍の断面図であり、鋳型内溶鋼10に浸漬
された浸漬ノズル12の下方には溶鋼吐出孔14が設けられ
ており、その吐出角度αは上向きに10〜20度に規定され
ている。図示例ではα＝15度である。なお、この浸漬ノ
ズル12は溶鋼吐出角度の点を除いて従来のものと同様で
あってよい。FIG. 2 is a sectional view in the vicinity of the molten steel discharge hole of the immersion nozzle used in the present invention. A molten steel discharge hole 14 is provided below the immersion nozzle 12 immersed in the molten steel 10 in the mold. The discharge angle α is regulated to 10 to 20 degrees upward. In the illustrated example, α = 15 degrees. The immersion nozzle 12 may be the same as the conventional one except for the molten steel discharge angle.
【００２２】浸漬ノズルの溶鋼吐出角度は、上向き10°
未満ではピンホール軽減効果はなく、一方、上向き20°
超えでは逆にモールドパウダー巻き込みにより鋳片欠陥
は増加する。この理由としては、20度を越えて上向きに
することにより、a)メニスカス部の保温、b)鋳片表層部
へのピンホールの捕捉が考えられる。The molten steel discharge angle of the immersion nozzle is 10 ° upward.
Below, there is no pinhole reduction effect, while upward 20 °
On the contrary, if it exceeds the range, slab defects increase due to the inclusion of mold powder. The reason for this is considered to be that the surface is kept above 20 degrees and a) the heat of the meniscus part is retained, and b) the pinhole is captured in the surface layer part of the slab.
【００２３】本発明において、連続鋳造、熱間圧延工程
自体は、慣用のそれであってよく、特に制限されない
が、一般的には次のような条件で行えばよい。In the present invention, the continuous casting and hot rolling steps themselves may be conventional ones and are not particularly limited, but generally they may be carried out under the following conditions.
【００２４】 連続鋳造条件: 鋳造速度 : 0.6〜0.8m/min 鋳込温度 : 1480 〜1490℃ パウダー : CaO-SiO2 系 熱間圧延条件: 開始温度 : 950〜1100℃ 終了温度 : 400〜800 ℃ 合計圧下率 : 90 〜96％ 本発明によれば、連続鋳造鋳片の手入れを不用とするこ
とができることから、連続鋳造鋳片をAr1 変態点以下に
まで冷却することなく、引続いて熱間圧延を行う直接圧
延方式が可能となり、製造コストの低減効果は大きい。Continuous casting conditions: Casting speed: 0.6 to 0.8 m / min Casting temperature: 1480 to 1490 ° C Powder: CaO-SiO 2 system hot rolling conditions: Start temperature: 950 to 1100 ° C End temperature: 400 to 800 ° C Total rolling reduction: 90 to 96% According to the present invention, since the maintenance of the continuous cast slab can be dispensed with, the continuous cast slab is continuously heated without being cooled to the Ar 1 transformation point or lower. A direct rolling system that performs hot rolling becomes possible, and the effect of reducing the manufacturing cost is great.
【００２５】ここで、実施例によって本発明についてさ
らに具体的に説明する。Now, the present invention will be described more specifically by way of examples.
【００２６】[0026]
【実施例】本例では表１に示す鋼組成を基本組成とした
一連の供試鋼を溶製し、図３に示す慣用法による連続鋳
造、熱間圧延の各工程を経て、熱延鋼板を得た。連続鋳
造鋳片は無手入れで熱間圧延工程に送った。EXAMPLE In this example, a series of sample steels having the steel compositions shown in Table 1 as a basic composition were smelted, and the hot-rolled steel sheet was subjected to the steps of continuous casting and hot rolling by the conventional method shown in FIG. Got The continuously cast slab was sent to the hot rolling process without care.
【００２７】[0027]
【表１】 [Table 1]
【００２８】本発明における製造プロセスは次の通りで
あった。The manufacturing process in the present invention was as follows.
【００２９】 連続鋳造条件: 鋳造速度 : 0.6 〜0.8m/min 鋳込温度 : 1480 〜1490℃ モールドパウダー : Ca-Si系 浸漬ノズル : 上向15° 熱間圧延条件: 型式 : 2段熱間圧延機 加熱温度 : 1150 〜1250℃ 開始温度 : 950 〜1100℃ 終了温度 : 400 〜800 ℃ 合計圧下率 : 90 〜96％ 本例にあっては、Ca含有量、Ｎ含有量、浸漬ノズルの種
類をそれぞれ変えて一連の連続鋳造、熱間圧延を行っ
た。Continuous casting conditions: Casting speed: 0.6 to 0.8 m / min Casting temperature: 1480 to 1490 ° C Mold powder: Ca-Si immersion nozzle: 15 ° upward hot rolling condition: Model: Two-stage hot rolling Machine heating temperature: 1150 to 1250 ° C Start temperature: 950 to 1100 ° C End temperature: 400 to 800 ° C Total reduction ratio: 90 to 96% In this example, the Ca content, N content, and type of immersion nozzle are set. A series of continuous casting and hot rolling were performed while changing each.
【００３０】図４は、Ca含有量とノズル吐出し角度とが
ピンホールおよびヘゲ疵発生に及ぼす影響を示すグラフ
である。FIG. 4 is a graph showing the influence of the Ca content and the nozzle ejection angle on the occurrence of pinholes and bald spots.
【００３１】Ca処理が有効であって、それと相まってノ
ズル吐出し角度を上向きとすることの作用効果が理解で
きる。It can be understood that the Ca treatment is effective, and the action and effect of making the nozzle ejection angle upward in combination with it.
【００３２】図５は、Ca含有量が11ppm の溶鋼について
浸漬ノズルの吐出し角度とピンホール、巻き込み疵発生
数との相関を示すグラフである。FIG. 5 is a graph showing the correlation between the discharge angle of the dipping nozzle and the number of pinholes and entangled flaws in molten steel having a Ca content of 11 ppm.
【００３３】角度は上向きで10〜20度のときに表面欠陥
が大幅に減少することが分かる。It can be seen that the surface defects are significantly reduced when the angle is 10 to 20 degrees upward.
【００３４】本発明の範囲内のときに表面欠陥が大幅に
低減していることが分かる。It can be seen that the surface defects are significantly reduced within the scope of the present invention.
【００３５】[0035]
【発明の効果】本発明によれば、Ca配合量を調整すると
ともに浸漬ノズルからの溶鋼の吐出し角度を調整すると
いう簡便な手段でもって、無手入れ連続鋳造鋳片からの
熱間圧延鋼板の製造を可能とするものであって、今日の
ように大幅な製造コスト低減が求められている状況下か
らは本発明の意義は大きい。According to the present invention, by a simple means of adjusting the Ca blending amount and adjusting the molten steel discharge angle from the dipping nozzle, the hot rolled steel sheet from the unmaintened continuous cast slab can be The present invention is of great significance under the circumstances where it is possible to manufacture and a great reduction in manufacturing cost is demanded as in the present day.
【図１】従来例において見られたピンホール数とヘゲ疵
発生指数との相関を示すグラフである。FIG. 1 is a graph showing a correlation between the number of pinholes and a bald spot occurrence index found in a conventional example.
【図２】本発明で用いる浸漬ノズルの説明図である。FIG. 2 is an explanatory diagram of an immersion nozzle used in the present invention.
【図３】本発明の実施例における工程表である。FIG. 3 is a process chart in an example of the present invention.
【図４】本発明の実施例における結果を示すグラフであ
る。FIG. 4 is a graph showing the results in the examples of the present invention.
【図５】本発明の実施例における結果を示すグラフであ
る。FIG. 5 is a graph showing the results of the examples of the present invention.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ２２Ｃ 38/60 (72)発明者 吉田 修二 東京都新宿区本塩町８番地の２ 日本ステ ンレス株式会社技術研究所内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Reference number within the agency FI Technical indication location C22C 38/60 (72) Inventor Shuji Yoshida 2 Japan stainless stock at 8 Honshiocho, Shinjuku-ku, Tokyo Company Technology Research Center
Claims (1)
025 ％以下に制限したＳ快削オーステナイトステンレス
鋼の溶鋼にCa処理を施してCa含有量を５〜60ppm に調整
した後、溶鋼吐出角度が上向き10°以上20°以下の浸漬
ノズルを使って連続鋳造し、次いで熱間圧延することを
特徴とする、Ｓ快削オーステナイトステンレス鋼の製造
方法。1. A weight ratio of N content of 0.010% or more to 0.
After adjusting the Ca content to 5 to 60 ppm by applying Ca treatment to the molten steel of S free-cutting austenitic stainless steel limited to 025% or less, the molten steel discharge angle is continuously upward using an immersion nozzle with an angle of 10 ° to 20 °. A method for producing an S free-cutting austenitic stainless steel, which comprises casting and then hot rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04074646A JP3079756B2 (en) | 1992-03-30 | 1992-03-30 | Manufacturing method of S free cutting austenitic stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04074646A JP3079756B2 (en) | 1992-03-30 | 1992-03-30 | Manufacturing method of S free cutting austenitic stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05317916A true JPH05317916A (en) | 1993-12-03 |
| JP3079756B2 JP3079756B2 (en) | 2000-08-21 |
Family
ID=13553200
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04074646A Expired - Fee Related JP3079756B2 (en) | 1992-03-30 | 1992-03-30 | Manufacturing method of S free cutting austenitic stainless steel |
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| Country | Link |
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| JP (1) | JP3079756B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100477093B1 (en) * | 2000-12-08 | 2005-03-17 | 주식회사 포스코 | Method for refining stainless steel with sulfur |
| JP2007090367A (en) * | 2005-09-27 | 2007-04-12 | Sumitomo Metal Ind Ltd | Method for continuously casting boron-containing stainless steel |
| JP6129435B1 (en) * | 2016-09-16 | 2017-05-17 | 日新製鋼株式会社 | Continuous casting method |
-
1992
- 1992-03-30 JP JP04074646A patent/JP3079756B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100477093B1 (en) * | 2000-12-08 | 2005-03-17 | 주식회사 포스코 | Method for refining stainless steel with sulfur |
| JP2007090367A (en) * | 2005-09-27 | 2007-04-12 | Sumitomo Metal Ind Ltd | Method for continuously casting boron-containing stainless steel |
| JP4556823B2 (en) * | 2005-09-27 | 2010-10-06 | 住友金属工業株式会社 | Continuous casting method of B-containing stainless steel |
| JP6129435B1 (en) * | 2016-09-16 | 2017-05-17 | 日新製鋼株式会社 | Continuous casting method |
| WO2018051483A1 (en) * | 2016-09-16 | 2018-03-22 | 日新製鋼株式会社 | Continuous casting method |
| KR20190064593A (en) * | 2016-09-16 | 2019-06-10 | 닛테츠 닛신 세이코 가부시키가이샤 | Continuous casting method |
| CN110035844A (en) * | 2016-09-16 | 2019-07-19 | 日新制钢株式会社 | Continuous casting process |
| US10751791B2 (en) | 2016-09-16 | 2020-08-25 | Nippon Steel Stainless Steel Corporation | Continuous casting method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3079756B2 (en) | 2000-08-21 |
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