JPS5964137A - Coating method of soot on inside surface of hollow groove for moving casting mold - Google Patents

Abstract

PURPOSE:To adjust the amt. of the soot to be adhered by providing a manihold just before the gas ejection hole of a nozzle, supplying combustion assisting gas to combustible gas and regulating the combustion of the gas. CONSTITUTION:A metallic belt is moved on a part of the outside circumferential surface of a rotary ring 1 provided with a hollow groove 2 for a casting mold having the circumferential surface to form a moving casting mold. A molten metal is charged into the casting mold from one end thereof and a cast ingot 10 is detached from the other end. An ejection nozzle 11 for combustible gas which generates soot when burned is provided toward the groove 2 in the part of the wheel 1 which does not contact slidingly with the metallic belt 1. A manihold 15 is provided just before the gas ejection port of the nozzle 11. Combustible gas is supplied through a valve 16a and combustion assisting gas through a valve 16 to said manihold. The combustion of the combustible gas at the tip of the nozzle 11 is thus accelerated and the amt. of the soot to be produced is suppressed.

Description

【発明の詳細な説明】[Detailed description of the invention]

木龍明は、一部外周面に金１尾ペル１〜を接輪さＵＣ移
仙鋳型を形成づる周面に鋳型用凹溝を設置Ｊ　／、二回
転輪の該凹溝内面にススを塗イ１１りるｊｊ法にｌ１ｌ
ｌりるもので、ススイ；１着蟻の調整を容易にし、−て
の自動制御を可能にしＣ，鋳塊温度を適切に管埋（−き
るようにしたしのである。 一般に銅及び銅合金の荒引線の製ｊ市におい−Ｕ　ｌ；
ｌ、第１図に示］ように周面に鋳５１月１１凹溝（２）
を設Moku Ryumei installed a concave groove for the mold on the circumferential surface of a part of the outer circumferential surface of the wheel to form a UC transfer mold. Painting 11 riru jj method l1l
It is very easy to adjust the temperature of the ingot and enables automatic control of the temperature of the ingot.In general, it is used for copper and copper alloys. Made in the city of Arahiki line - U l;
11 grooves (2) on the circumferential surface as shown in Figure 1]
established

【ノだ回転輪（１）の一部外周面に金属ベルｈ（３
＞をダッシュ［ｌ−ル（４）、ガ、イドＬ】−ル（５）
。 （５”）及びデンションＩ」−ル（６）にＪ−り接輪さ
ＩＩＣ移動鋳型（７）を形成し、該鋳型（７）の一端に
ボッｈ（８）を設け、ポット（８）からスパウト（９）
を通して鋳型（７）内に溶湯を注湯し、他端から凝固し
た鋳塊（１０）を悶ｆ　ｌｔＪ　Ｌ、　（棒状紡関を連
続的に製造している。このような連続鋳造においＣ，鋳
型内面に鋳１鬼がＩｎ　（ＮＪ　＜のを防止し、かつ梼
ｌ卑の離脱を容易に覆るため、第１歯に示づように回転
輪（１）の金属ベルｈ（３）ど接動じない部分で凹溝（
２）に向Ｉ−１’Ｕ、ガス燃焼によりススをざｔ牛Ｊる
可燃性ガスの噴射ノズル（１１）を設け、ガスを噴出さ
せて周囲の空気で燃焼させ、火炎の不完全燃焼にＪ、り
弁士りるススを凹潜（２）内面にイ」着さけている。 通常ノズルには第２図〈イ）に承りように回転輪（１）
の凹溝（２）内面に向りＣ中孔ノズル（１１ａ）を設置
ノ、アヒヂレンガスのような燃焼により多槽のススを発
生するガスを噴出燃焼させＣ大きな火炎により凹溝（２
）内面にススをｆ」着させているが、凹溝（２）内面の
スス量」肴早が不均一となり易い欠点がある。これを改
善覆るため、第２図（［Ｊ）に承りようにノズル先端部
（１２）を回転輪（１）の凹溝（２）の…１面形状と相
似の形状とし、凹ｔｆｌｔ　（２）内面と相対づる周辺
（１３）に複数個のガス噴出孔（１４）を設りた多孔ノ
ズル（ｌｌｂ＞を用い、小さな火’Ｊ２により凹溝（２
）内面にススを均一に６１着さける方法が提案されＣい
る。 このようなノズルを用い、ガスを噴出燃焼させて旧する
スス量を調整覆るためには、ノズル先端ど凹溝内面間の
四隅を近すりたり、遠ざけたりしくいるが、ノズルのア
ームを動かりための遠隔操作が困難なばかりか、ススの
イ；１着分布が変化する欠点があり、特に第２図（Ｅｌ
）に示づ多孔ノズルを用いる場合には、孔の位置が予じ
め溶湯の凝固過程の冷用に１甲ない発生づる熱応力によ
り、鋳塊に割れが弁士しにくいＪ、うにレッ］−され°
ＣいるＩごめ、ノズルのイジ装置を変化さけることはス
スの最適分子ｌｉがり゛れ（°鋳塊に割れを発／ｌりる
欠点があつｌこ　。 本発明はこれに鑑み種々研究の結果、ガス燃焼によりス
スを発生する可燃性ガスに助燃１１ガスを添加りること
により、ススの弁士ｍを抑制し１ｑることを知見し、更
に研究の結果、ススイτ１着皐の調整又は自動制御の可
能なスス塗ｆｌｉ　ｊｊ法を開弁したもので、一部外周
面に金属ベルＩ−を接動させて移動鋳型を形成りる周面
に鋳型用凹溝を設【）た回転輪の該凹溝内に向けて、ス
スを発生づる可燃性ガスの哨ｑ・１ノズルを設【ノ、ガ
ス燃焼によりブｕｌ’ｉるススを凹面内面にイ・１着さ
ける方法において、ノズルのカスｎｒ４出孔直前にマニ
ホールドを設（ノー（可燃性ガスに助燃性ガスを供給し
、ガス燃焼を変化さＵ（ススのｆζ１着串を調整りるこ
とを特徴ど覆るものである。 即ち本弁明は第３３図に示づように円面に鋳型用凹溝（
２）を設置ノた回転輪（１）の一部外周面に金属ベル１
−を接動させて移動鋳型を形成し、該鋳型の一端より溶
湯を注渇し、他端、Ｊ：すｖｊＩｔ！　（１０）を前■
ｊ（さ１！る連続錆造装置の回転輪（１）の金属ベルＩ
・ど接動じない部分で凹溝（２）に向（）てガス燃焼に
Ｊ、リススを発生づるｎＪ燃性ガスの噴射ノズル（１１
）を設ける。ノズル（１１）のガス噴出花的萌にはマニ
ホールド（１５）を設け、マーホールド（１５）にパル
７（１（ｉａ）を通しＣ可燃ｖ１がスと、バルブ゛（’
１６ｂ　）を通して助燃・［ｊ１ガスを供給し、ノズル
（１１）先端部での可燃焼性ガスの燃焼を（ｒ、７進さ
け（Ｒ′１りるスス年を抑制りるようにしたものである
。内国においてｆｉ７ａ）は可燃性ガスボンベ、（１７
ｂ）ぼ助燃性ガスボンベ、（１８ａ）。 （１８１＋）は圧力へ１、（１９ａ　）　、　　（１９
ｂ　）　１．本流吊胴を承り。 このようにしてノス′ル（１１）のガス噴出孔直前に設
（）たマニホールド（１５）で可燃Ｆ１ガスに助燃性ガ
ス、例えば空気を供給して混合づることにＪ、す、ノズ
ル先端におりる可燃性カスの燃焼は空気の混合比に応じ
て燃焼がｌｔＮ進され、ススの発ノ１紹は減少し、凹溝
（２）内面へのスス（−Ｊ−Ｗ　ｆｆｌは減少りること
に４「る。従ってノズル（１１）を最適（（ｌ　ＩＦｒ
（、二固定し、空気の混合比を調整りることによりスス
量」１１部の調整又は自動制御が容易になる。 以Ｆ本発明を実施例に）い（詳細レニ説明づる。 第３図に示り装置を用い、マーホールトに）７レブーレ
ンガスを０．５８９／ｃＭの圧力ｒＷ人し、これに種々
の割合Ｃ空気を混合し、内径２　ｍｍの中孔ノズルを通
しｌ銅製塗イｌｉ板に向（）、ｌＩＣ′１出燃焼さ１Ｊ
て甲ｆ１′１時間当りのススｆ」着ｍを測定した。イの
結果を第１図に示づ。 第４図から明らかなＪ、うに空気混合比に比例してスス
１１着量は１１１調に減少し、２，０００ｃｃ　、’ｍ
ｉｎの空気供給品−（は空気無供給の場合の約１／１０
どなることが判る。尚空気を過剰に、例えば３，０００
ｃｃ　／　ｍ　ｔ　ｎ　Ｌ；７．　Ｊ二供給すると火炎
の逆火現象が急増し、非常に不安定と４する。 次に第３図に示づようにマニホールド（゛゛アレヂレン
カス空気を供給し、ノズルを通しＣ回転輪の凹溝内面に
向けて噴出燃焼させ、凹溝内面にススをｆ・１着さけ（
連続蒔ｊ市を行なった。溶湯から鋳型への伝熱抵抗は、
スス０１着量に関係し、ｆ−ｔ　Ｗ　ｆＴｊの少ない捏
持型に熱が伝達され亡゛りい１１η向にあり、鋳型内の
鋳塊は良く冷却される。そこで放６・１渇瘍計を用いて
詩りル温度を連続測定し、マニホールド内の可燃性ガス
圧と空気供給バルブの開度（％）を変化ざＵ、錆１卑の
基準温度からのずれを測定した。その結果を第５図に示
す。内因においＵ（ａ）ハ可燃性ガス圧０．５Ｎｆｆ　
／　ｃ＃Ｉ、（ｂ）は同０．３８ｙ、／ｃｍ、（ｃ　）
は同０．１に９／′ｃｉの場合を示１゜第５図から判る
ように、鋳塊温度を測定し、基準ｒ＝ｒαからのずれに
応じてバルブの開度を調整することにより、容易に鋳１
３１１１温度を基準温度に保持りることができる。 また第５図に示１関係にＪ、り鋳塊温度を測定し【バル
ブの開度を自動制御し、鋳塊温度のバラッ１−を調べた
。イの結果を従来の手動にＪ、リノスルのアームを調整
した場合と比較し、第１表に示づ。 第１表 このように本発明方法にＪ：れば、従来方法に比べＣ適
切に鋳塊温度を制御づることができるため、鋳塊温度が
基準温度より高い場合に蒔博に弁イ１りるレンターシコ
リングケージのような欠陥もなく’Ｊす、また鋳塊温度
を一七５℃以内に管理りることかぐきるため、その後の
工程におりる圧延条イ′１を安定化し、圧延加工後の性
能上の品質のバラツ：１−を減少Ｊることがひきる等土
業上ＩｌＱ若な効果を奏するＬ）のＣ′ある。[Metal bell h (3
> dash [l-ru (4), ga, id L]-ru (5)
. (5") and the dension I"-rule (6), a J-shaped IIC movable mold (7) is formed, a boh (8) is provided at one end of the mold (7), and a pot (8) is formed. Kara spout (9)
The molten metal is poured into the mold (7) through the other end, and the solidified ingot (10) is poured into the mold (7) from the other end. In order to prevent the mold from forming on the inner surface of the mold and to easily cover the detachment of the metal bell h (3) of the rotating ring (1), as shown in the first tooth, Concave grooves (
2) A flammable gas injection nozzle (11) is installed in the direction I-1'U, which produces soot by gas combustion, and the gas is ejected and combusted in the surrounding air, resulting in incomplete combustion of the flame. J, Ribenshi Rirususu is worn on the inside (2). Normally, the nozzle has a rotating ring (1) as shown in Figure 2 (A).
A medium-hole nozzle (11a) is installed facing the inner surface of the concave groove (2), and a gas that generates soot in multiple tanks is ejected and combusted by combustion similar to that of ahiden gas.
) Soot is deposited on the inner surface, but there is a drawback that the concave groove (2) amount of soot on the inner surface tends to be uneven. In order to improve this problem, the nozzle tip (12) is shaped similar to the shape of one surface of the groove (2) of the rotary ring (1), as shown in Fig. 2 ([J), and the groove tflt (2 ) Using a multi-hole nozzle (llb) with a plurality of gas ejection holes (14) on the periphery (13) facing the inner surface, a small fire 'J2 is used to blow the concave groove (2).
) A method of uniformly depositing soot on the inner surface has been proposed. Using such a nozzle, the four corners between the nozzle tip and the inner surface of the concave groove can be moved closer or farther apart in order to eject and burn gas to adjust and cover the amount of old soot. Not only is remote control difficult, but there is also the drawback that the first place distribution changes, especially in Figure 2 (El
) When using the multi-hole nozzle shown in ), the position of the holes is such that it is difficult for cracks to occur in the ingot due to the thermal stress generated during the cooling process of the molten metal. Been °
However, avoiding changing the nozzle adjustment device will result in the optimum molecular weight of the soot (which has the disadvantage of causing cracks in the ingot). As a result, it was found that by adding auxiliary combustion gas to the combustible gas that generates soot through gas combustion, the soot benshi m can be suppressed by 1q, and as a result of further research, the soot τ1 setting can be adjusted or automatically This is an invention of the controllable soot coating fli jj method, in which a metal bell I- is brought into contact with a part of the outer circumferential surface to form a moving mold. A nozzle for combustible gas that generates soot is installed toward the inside of the concave groove. A manifold is installed just before the soot nr4 outlet. As shown in Figure 33, the excuse is a concave groove for the mold (
2) Install a metal bell 1 on a part of the outer circumferential surface of the rotating wheel (1).
- is brought into contact to form a moving mold, the molten metal is poured from one end of the mold, and the other end is moved. (10) before ■
Metal bell I of the rotating wheel (1) of the continuous rust forming device
・NJ combustible gas injection nozzle (11) that generates gas combustion and squirrel toward the concave groove (2) in the part that does not touch.
) will be established. A manifold (15) is installed in the gas ejection flower of the nozzle (11), and the valve ゛('
16b) to supply auxiliary combustion/[j1 gas to suppress the combustion of combustible gas at the tip of the nozzle (11). In Japan, fi7a) is a flammable gas cylinder, (17
b) Combustion auxiliary gas cylinder, (18a). (181+) is 1 to pressure, (19a), (19
b) 1. We accept mainstream hanging trunks. In this way, the manifold (15) installed just before the gas ejection hole of the nozzle (11) supplies and mixes the combustible F1 gas with an auxiliary gas, such as air. The combustion of the combustible debris that falls is accelerated according to the air mixture ratio, the amount of soot generated decreases, and the amount of soot (-J-W ffl) on the inner surface of the groove (2) decreases. In particular, the nozzle (11) is optimized ((l IFr
(By fixing the soot amount and adjusting the air mixing ratio, it becomes easy to adjust or automatically control the soot amount. Hereinafter, the present invention will be described in detail as an example.) Fig. 3 Using the apparatus shown in Figure 1, a 7-level gas was applied to Marholt at a pressure of 0.589/cM, mixed with air in various proportions, and passed through a medium-hole nozzle with an inner diameter of 2 mm to a coated copper plate. Direction (), lIC'1 output combustion 1J
The amount of soot deposited per hour was measured. Figure 1 shows the results of b. It is clear from Figure 4 that the amount of soot 11 decreases to 111 in proportion to the air mixture ratio, which is 2,000 cc, 'm.
air supply product - (approximately 1/10 of the case without air supply)
I know what's going on. Add too much air, e.g. 3,000
cc/mtnL;7. When J2 is supplied, the backfire phenomenon of the flame increases rapidly, and it is considered to be extremely unstable. Next, as shown in Fig. 3, air is supplied to the manifold (゛゛) and is ejected and burned through the nozzle toward the inner surface of the concave groove of the C rotary wheel, so that soot is deposited on the inner surface of the concave groove (
We held a series of sowing markets. The heat transfer resistance from the molten metal to the mold is
In relation to the amount of soot deposited, heat is transferred to the holding mold with less f-t W fTj, and the ingot in the mold is cooled well. Therefore, the air temperature was continuously measured using a 6.1 thirst meter, and the flammable gas pressure in the manifold and the opening degree (%) of the air supply valve were varied. The deviation was measured. The results are shown in FIG. Internal cause U(a) C Flammable gas pressure 0.5Nff
/c#I, (b) is 0.38y, /cm, (c)
shows the case of 9/'ci in the same 0.1. As can be seen from Figure 5, by measuring the ingot temperature and adjusting the valve opening according to the deviation from the standard r = rα. , easily cast 1
3111 temperature can be maintained at the reference temperature. In addition, the ingot temperature was measured according to the relationship shown in FIG. 5, and the valve opening was automatically controlled to check for variations in the ingot temperature. The results of A are compared with those of the conventional manual adjustment of J and Reno Sur's arms, and are shown in Table 1. Table 1 As shown in Table 1, if the method of the present invention is used, the ingot temperature can be controlled more appropriately than the conventional method. In order to avoid defects such as those caused by the rolling cage, and to control the ingot temperature within 175℃, we stabilize the rolled strip 1 for the subsequent process. Variations in performance quality after processing: 1- is reduced by C' of L) which has a lower effect on soil work, such as reducing J.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の移動鋳型用凹溝内面のスス塗布方法の一
例を示づ説明図、第２図（イ）、（ロ）は従来のスス（
；Ｉ着用ノズルを承り−ｂので、（イ）はでの−例を承
り説明図、（ロ）は他の一例を示′？ｌ説明図、第３図
は本発明方法の一実施例を示ず工１１明図、第４図は本
発明におりる空気供給品とスス（”Ｉ　ｉ′ｒ　ｎｊの
関係図、第５図は本発明にお【プる空気供給用バルブの
開度と鋳塊温度との関係図である。 １、回転輪 ２、凹溝 ３、金属ｌ＼ルト １０、　ｆ）［１Φ １１、ノズル １５．７−小−ルド １［ｉａ、１６１１．バルブ １８ａｙ１８ｂ、月力泪 １９ａ、１！］ｌ＋、流ｍ泪 １８３ 手続ネ山正Ｉ佃　（自　発） （旧印５８年７月２８日 特許庁長官　若杉手口大　殿 「 １、小（パ１の表示 昭和５５７年　特許願　第１５７０５７　ｂ２、発明の
名称 移動鋳型用凹溝内面のスス塗イアｉブノ２Ａ３、ｔ１１
ｉ正をづる者 事件どの関係　　特許出願人 １１　所　　　東京都千代田区丸の内２１目６香１舅名
　称　　　（５２９）古河電気１−業株式会社４、代理
人 １］、所　　　東京都千代田区神田北乗物町１６番地〒
１０１　　　　　　英ビル３階 ５、　ン１Ｉｊ１「の対象 明細書の発明の詳細な説明の項 」−続ンｒｌｌ：ｉ：Ｅ書　（自　発）昭和５８年１１
月４日 特許庁長官　若杉ｆｌＪ夫　殿 １゜事イ′１の表示 昭和５７年　特Ｗ［願　　第１５１５−７Ｏ５７、発明
の名称 移動鋳型用凹溝内面のスス塗布方法 ３、補１１：をづる老 事件どの関係　　特許出願人 住　所　　　東京都千代口１区丸の内２］目６番１号名
　称　　　（５２９）古河電気上業株式会礼４、代理人 住　所　　　東京都千代ｌ］区神田北乗物町゛１６番地
〒１０１　　　　　英ビル３階 ５、補正の対象 明細書の発明の詳細な説明の項及び図面６、補正の内容 別紙のとおり 補　　正　　の　　内　　容 １、発明の詳細な説明においてト記事項を訂正する。 （１）第６頁第１４行に１マニホールド」とあるを（’
　？　二；ｋ　−ルト（内容（Ｐ１１０００ｃｍ３）　
Ｊと訂正する。 （２）第６頁第１５行に１導入１とあるを１単位時間当
り　１５００ＯＮ　ｃｍ３／　ｍｉｎ　導入１ど訂正す
る。 （３）　！ｉ　６　頁第１７ｔｒニｒ　銅Ｉ！ＩＩｆｒ
ｉ板ニ向Ｌｔ　ｊ　トするを１’　１０ｃｍ　Ｆｌｌｌ
　シた銅製塗イ「板に直角に向け」と訂正りる。 （４）第７頁１行にｒ　２，０００ｃｃ／ｍｉｎ　Ｊど
あるを１　２．００ＯＮｃｍ’　／ｍｉｎ　Ｊと訂正す
る。 （５）第７頁第３行〜第４行にｌ　　３，０００ｃｃ／
　ｍｉｎ　１どあるをｒ　３，００ＯＮｃｍ３／ｍｉｎ
　Ｊと訂正する。 ２、添ｆ１図面中、第４図を別紙の通り訂正する。 −１εFigure 1 is an explanatory diagram showing an example of a conventional method of applying soot to the inner surface of a concave groove for a movable mold, and Figures 2 (a) and (b) are illustrations of a conventional method of applying soot to the inner surface of a concave groove for a moving mold.
; I accept the worn nozzle - b, so (a) is an explanatory diagram based on the example, and (b) shows another example'? 1 explanatory drawing, FIG. 3 shows an example of the method of the present invention, and FIG. The figure is a relationship diagram between the opening degree of the air supply valve and the ingot temperature according to the present invention. 1. Rotating ring 2, groove 3, metal l\rut 10, f) [1Φ 11, nozzle 15.7-small-old 1 [ia, 1611. valve 18ay 18b, moon power tear 19a, 1!] l+, flow m tear 183 procedure Neyama Masa I Tsukuda (self-proposal) (Patent dated July 28, 1958) Director General of the Agency Wakasugi Teguchidai ``1. Small (Pa.1 Indication 1988 Patent Application No. 157057 b2, Name of Invention Soot coating inner surface of concave groove for moving mold ibuno 2A3, t11
What is the relationship between the i-correct person case? Patent applicant 11 Address: 21, Marunouchi, Chiyoda-ku, Tokyo, 6 Kaori, 1 father-in-law Name (529) Furukawa Electric Co., Ltd. 4, Agent 1], Location: Kanda Kita, Chiyoda-ku, Tokyo No. 16, Vehicle Town
101 Ei Building 3rd Floor 5, N1Ij1 "Detailed Explanation of the Invention in the Subject Specification" - Continued rll:i:E (Spontaneous) November 1988
July 4th, Commissioner of the Patent Office Wakasugi FlJ Husband 1゜〜　〜　　　　1987 Special W [Application No. 1515-7O57, Name of invention Method for applying soot on the inner surface of grooves for moving molds 3, Supplement 11: Related to the elderly case Patent applicant address: Marunouchi 2, Chiyoguchi 1-ku, Tokyo, No. 6, No. 1 Name (529) Furukawa Electric Business Co., Ltd. Association 4, Agent address: Kanda Kita Vehicles, Chiyoguchi 1-ku, Tokyo Town 16 Address 101 Ei Building 3rd Floor 5, Detailed Description of the Invention and Drawing 6 in the Specification Subject to Amendment, Contents of the Amendment 1, Articles in the Detailed Description of the Invention as shown in the appendix Correct the section. (1) On page 6, line 14, there is a line that says ``1 manifold''('
? 2; k-root (Contents (P11000cm3)
Correct it with J. (2) On page 6, line 15, correct 1 introduction 1 to 1500ON cm3/min introduction 1 per unit time. (3)! i 6 page 17tr Nir Copper I! IIfr
i plate facing Lt j 1' 10cm Full
Corrected to say ``Aim perpendicular to the board.'' (4) On page 7, line 1, correct 2,000cc/min J to 12.00ONcm'/min J. (5) Page 7, line 3 to line 4: 3,000cc/
min 1 r 3,00ONcm3/min
Correct it with J. 2. In the attached f1 drawing, Figure 4 is corrected as shown in the attached sheet. −1ε

Claims (3)

【特許請求の範囲】[Claims] （１）一部外周面に全屈ｌベルトを接篩さｔ！ｃ移動鋳
型を形成づる周面に鋳型用凹溝を設りた回転輪の該凹溝
内に向１ノ（゛、ススを発生ずる可燃性ガスの哨０・１
ノズルを設け、ガス燃焼により発生するススを凹溝内面
に６１着さける方法におい“Ｃ、ノスルのガス噴出孔直
前にマニホールドを設りてｉｉＪ燃性ガスに助燃性ガス
を供給し、ガス燃焼を変化さけてススのｆ■ｌを調整す
ることを特徴どづる移動鋳型用凹溝内面のスス塗布方法
。(1) Part of the outer circumferential surface is covered with a fully bent l belt! c) A rotary wheel with a mold groove formed on its circumferential surface that forms a moving mold has a groove in the direction of 1 no.
In the method of installing a nozzle and depositing the soot generated by gas combustion on the inner surface of the concave groove, "C. A manifold is installed just before the gas ejection hole of the nozzle, and ii. A method for applying soot to the inner surface of a concave groove for a moving mold, which is characterized by adjusting the soot f■l while avoiding changes. （２）可燃性カスど助燃性カスの混合比を変えてガス燃
焼を変化さＵることにＪ：リススの付着量を調整づる特
許請求の範囲第１項記載のスス塗布方法。(2) The soot coating method according to claim 1, wherein the amount of adhering soot is adjusted by changing the gas combustion by changing the mixing ratio of combustible scum and combustion-assisting scum. （３）鋳ヘリから前ｎ；２づる鋳塊温度にＪ、リガスの
混合比を制御し、ススの付着量を調整し−Ｃ離脱する鋳
１シ１！温度を一定にイ＾持−りる特許請求の範囲第１
１ｐ又は第２１１’ｉ記戦のススｍ　ｆｌｉ方法。(3) Control the mixture ratio of J and regas to the ingot temperature, adjust the amount of soot adhering to the ingot temperature, and remove the -C from the casting hemisphere. Claim 1: Keeping the temperature constant
1p or 211'i war susu m fli method.