JPH071086A - Method for repairing copper-made casting mold - Google Patents
Method for repairing copper-made casting moldInfo
- Publication number
- JPH071086A JPH071086A JP5143596A JP14359693A JPH071086A JP H071086 A JPH071086 A JP H071086A JP 5143596 A JP5143596 A JP 5143596A JP 14359693 A JP14359693 A JP 14359693A JP H071086 A JPH071086 A JP H071086A
- Authority
- JP
- Japan
- Prior art keywords
- copper
- casting mold
- mold
- worn parts
- plating bath
- 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
- Continuous Casting (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は銅製鋳造モールドの補修
方法に関し、更に詳しくは、銅製鋳造モールドを使用し
ている過程で、その鋳造モールドの壁面に発生する部分
的な減耗個所に銅を肉盛りして、再度、使用可能な鋳造
モールドに復元させることができる銅製鋳造モールドの
補修方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing a copper casting mold, and more specifically, it is a process of using the copper casting mold, in which a part of the wall surface of the casting mold is partially depleted with copper. The present invention relates to a method for repairing a copper casting mold that can be piled up and restored to a usable casting mold again.
【０００２】[0002]
【従来の技術】真空アーク再溶解法やエレクトロスラグ
再溶解法などの各種の鋳造法に用いられる鋳造モールド
は、通常、銅製のものが主流である。これらの鋳造モー
ルドは、その形状が円筒形であったり、複数枚の平板材
の相互間をボルト−ナットなどの機械的手段で接続して
所望形状にした中空体であったりして、用途に応じて種
々の形状をしている。そして、それら形状の鋳造モール
ドに共通していえることは、製造される鋳塊の外表面の
状態は鋳造モールドの内壁面の状態に規定されることか
らして、鋳造モールドの内壁面は平滑面になっているこ
とである。2. Description of the Related Art As a casting mold used in various casting methods such as a vacuum arc remelting method and an electroslag remelting method, a copper mold is usually the mainstream. These casting molds have a cylindrical shape or a hollow body having a desired shape formed by connecting a plurality of flat plate members with each other by mechanical means such as bolts and nuts. Depending on the shape, it has various shapes. What is common to casting molds of these shapes is that the outer surface state of the ingot to be manufactured is regulated by the inner wall surface state of the casting mold, so the inner wall surface of the casting mold is a smooth surface. That is.
【０００３】しかしながら、例えばＥＳＲの鋳造モール
ドの場合、操業が進むうちに、鋳造モールドの内壁面で
は、部分的に、その構成材料である銅と溶融スラグ中の
ある成分との間で化学反応が起こって脆弱な金属間化合
物が生成し、そして、この金属間化合物は鋳造モールド
の内壁面から剥離し、製造される鋳塊の表面に付着して
いく。すなわち、ＥＳＲ操業が進行するにつれて、銅製
の鋳造モールドの内壁面には部分的に肉厚が減耗した個
所が生じて、本来あるべき平滑面状態が崩れることにな
る。However, in the case of an ESR casting mold, for example, as the operation proceeds, a chemical reaction occurs partially on the inner wall surface of the casting mold between the constituent material copper and a component in the molten slag. This occurs to form a brittle intermetallic compound, and this intermetallic compound peels off from the inner wall surface of the casting mold and adheres to the surface of the ingot to be produced. That is, as the ESR operation progresses, the inner wall surface of the copper casting mold has a portion where the wall thickness is partially reduced, and the original smooth surface state is lost.
【０００４】この減耗個所が増加し、または減耗の深さ
や広さが大きくなりすぎると、製造される鋳塊に悪影響
を与えるので、そのときは、その鋳造モールドは寿命が
尽きたものとして廃棄される。しかし、鋳造モールドは
比較的高価なものであるため、上記した使用寿命が尽き
る前に、その減耗個所に再び銅を肉盛りして形状を復元
するという補修作業が行われている。[0004] If this wear point increases or the depth and width of the wear increase too much, it will adversely affect the ingot to be produced, and at that time, the casting mold is discarded as having reached the end of its life. It However, since the casting mold is comparatively expensive, repair work is performed before the end of the above-mentioned service life, in which the wear-removed portion is overlaid with copper to restore the shape.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、鋳造モ
ールドの減耗個所を銅の肉盛りで補修しようとする方法
には次のような問題がある。すなわち、銅の肉盛りは通
常４００℃位の温度で行われるが、この肉盛り作業の終
了後にあっては、補修された鋳造モールドが熱変形して
しまうという問題である。However, there are the following problems in the method of repairing a wear-removed portion of a casting mold with a copper overlay. That is, the build-up of copper is usually performed at a temperature of about 400 ° C., but there is a problem that the repaired casting mold is thermally deformed after completion of the build-up work.
【０００６】このような熱変形は次のような不都合を引
き起こす。例えば、平らな銅板をボルトとナットで相互
に接続して組立てるＥＳＲ用の鋳造モールドの場合、補
修時には個々の銅板に分解してそれぞれに肉盛りを行う
が、肉盛り後の補修銅板を再度組立てようとしても、個
々の補修銅板が熱変形しているため、ボルト止めができ
なくなってしまう。Such thermal deformation causes the following inconveniences. For example, in the case of a casting mold for ESR that is assembled by connecting flat copper plates to each other with bolts and nuts, during repair, disassemble into individual copper plates and build up each, but reassemble the repaired copper plate after buildup. Even if you try, bolts cannot be fixed because the individual repair copper plates are thermally deformed.
【０００７】本発明は、銅の肉盛りで行われていた銅製
鋳造モールドの補修方法における上記した問題を解決
し、補修前後における変形は全く起こらない銅製鋳造モ
ールドの補修方法の提供を目的とする。An object of the present invention is to solve the above-mentioned problems in the method for repairing a copper casting mold that has been performed by depositing copper, and to provide a method for repairing a copper casting mold in which no deformation occurs before and after the repair. .
【０００８】[0008]
【課題を解決するための手段】上記した目的を達成する
ために、本発明においては、銅製鋳造モールドの減耗個
所を除いた他の表面部分にマスキング処理が施されてい
る前記銅製鋳造モールドを銅めっき浴に浸漬し、電解め
っき法で、前記減耗個所に電解銅を析出させて肉盛りす
ることを特徴とする銅製鋳造モールドの補修方法が提供
される。In order to achieve the above-mentioned object, in the present invention, the copper casting mold is provided with a masking treatment on the other surface portion of the copper casting mold except for the wear-out portion. There is provided a method for repairing a copper casting mold, which is characterized by immersing in a plating bath and depositing electrolytic copper on the wear-reduced portion by an electrolytic plating method to build up the copper.
【０００９】本発明においては、電解めっき法で、銅製
鋳造モールドの減耗個所に銅を肉盛りするに先立ち、ま
ず、銅製鋳造モールドにマスキング処理が施される。こ
の状態を一部切欠断面として図１に示す。図において、
円筒形の銅製鋳造モールド１の内壁面１ａの一部には、
減耗個所２が存在している。そして、この減耗個所２を
除いた鋳造モールド１の表面は、後述する銅めっき浴で
侵食されず、同時に電気絶縁性である材料で被覆されて
マスキング層３が形成されている。In the present invention, the copper casting mold is first subjected to a masking treatment by the electrolytic plating method before depositing copper on the wear-removed portion of the copper casting mold. This state is shown in FIG. 1 as a partially cutaway cross section. In the figure,
On a part of the inner wall surface 1a of the cylindrical copper casting mold 1,
There is a wear point 2. The surface of the casting mold 1 excluding the wear-removed portion 2 is not corroded by a copper plating bath described later, and at the same time, is covered with a material having an electric insulating property to form a masking layer 3.
【００１０】このマスキング層３の材料としては、例え
ば、有機質塗料のようなものをあげることができる。ま
た、このマスキング層３は、例えば、上記した減耗個所
２に有機樹脂のような可塑性の材料を充填したのち、全
体をマスキング層用の材料で被覆し、ついで、上記可塑
性の材料のみを減耗個所２から剥離して減耗個所の表面
２ａを露出することによって形成することができる。As a material of the masking layer 3, for example, an organic paint can be used. Further, the masking layer 3 is filled with a plastic material such as an organic resin in the wear-reducing portion 2 described above, and then the entire masking layer 3 is covered with a material for the masking layer. It can be formed by peeling from 2 to expose the surface 2a of the wear point.
【００１１】マスキング処理を終えたのち、つぎに、図
２で示したように、この鋳造モールド１を銅めっき浴４
の中に浸漬する。そして、鋳造モールド１を直流電源５
のマイナス極に接続し、また、減耗個所２と非接触状態
で対向し、かつ、減耗個所２の全体を覆うようにして、
例えば、粗銅板のような消耗電極６を配置し、この電極
６を直流電源５のプラス極に接続する。After the masking process is completed, the casting mold 1 is then treated with a copper plating bath 4 as shown in FIG.
Soak in. Then, the casting mold 1 is connected to the DC power source 5
Connected to the negative pole of No. 2, facing the wear point 2 in a non-contact state, and covering the entire wear point 2,
For example, a consumable electrode 6 such as a crude copper plate is arranged, and this electrode 6 is connected to the positive electrode of the DC power supply 5.
【００１２】用いる銅めっき浴は格別限定されるもので
はなく、その種類，銅濃度，浴温，ｐＨなどは、通常、
電解銅めっきに用いるものであれば何であってもよい。
このように各要素をセットしたのち、電解めっき操作を
行う。このとき、銅めっき浴４を図示しない撹拌機で撹
拌し続けることが好適である。電解銅は、露出している
減耗個所２の露出面２ａにのみ電着するので、減耗個所
２は、電解めっきの進行に伴い、厚みが復元する。所定
時間経過後に電解めっき操作を停止し、全体をめっき浴
から取出し、マスキング層を剥離除去すれば、減耗個所
２には銅が埋まり込んで全体の内壁面は平坦となるの
で、再び鋳造モールドとして使用することができる。The copper plating bath used is not particularly limited, and its type, copper concentration, bath temperature, pH, etc. are usually
Any material may be used as long as it is used for electrolytic copper plating.
After setting each element in this way, an electrolytic plating operation is performed. At this time, it is preferable to continue stirring the copper plating bath 4 with a stirrer (not shown). Since the electrolytic copper is electrodeposited only on the exposed surface 2a of the exposed wear-removed portion 2, the thickness of the wear-removed portion 2 is restored as the electrolytic plating progresses. If the electroplating operation is stopped after a lapse of a predetermined time, the whole is taken out of the plating bath, and the masking layer is peeled off, copper is buried in the wear point 2 and the entire inner wall surface becomes flat. Can be used.
【００１３】なお、析出した電解銅の表面が凹凸になっ
ている場合には、そこに例えば研磨処理を施して、内壁
面全体を平坦にすればよい。When the surface of the deposited electrolytic copper is uneven, it may be polished, for example, to flatten the entire inner wall surface.
【００１４】[0014]
【発明の実施例】溶損によって、内壁面に、深さ３〜５
mm，幅５〜１０mmで周方向に延びる帯状の減耗個所が存
在し、内径５６０mm，高さ９００mmのＥＳＲ用の銅製鋳
造モールドを用意した。この鋳造モールドの前記減耗個
所２に有機樹脂を埋め込んだのち、全体に有機樹脂スプ
レーを施し、それを乾燥させたのちに前記有機樹脂を剥
離除去して減耗個所２の表面２ａを露出すると同時に、
モールドの他の表面にマスキング層３を形成した。[Embodiment of the Invention] Due to melting damage, a depth of 3 to 5 was formed on the inner wall surface.
A copper casting mold for ESR having an inner diameter of 560 mm and a height of 900 mm was prepared. After embedding an organic resin in the wear-reducing portion 2 of this casting mold, applying an organic resin spray to the whole, drying it, and then peeling and removing the organic resin to expose the surface 2a of the wear-removing portion 2, at the same time,
The masking layer 3 was formed on the other surface of the mold.
【００１５】マスキング処理後のモールドを下記の条件
で銅めっき浴に浸漬し、図２で示したように、外径５０
０mm，幅１００mmの円筒形の消耗電極６をモールド１の
減耗個所２から約３０mm離隔した位置にセットし、モー
ルド１と消耗電極６を直流電源５に接続して下記の条件
で電解銅めっきを行った。 めっき浴 ：Ｃｕ濃度４５ｇ／ｌ，Ｈ2 ＳＯ4 ２００ｇ
／ｌ，浴温６０℃。After the masking treatment, the mold was dipped in a copper plating bath under the following conditions to give an outer diameter of 50 as shown in FIG.
Set a cylindrical consumable electrode 6 with a width of 0 mm and a width of 100 mm at a position separated from the wear point 2 of the mold 1 by about 30 mm, connect the mold 1 and the consumable electrode 6 to the DC power supply 5, and perform electrolytic copper plating under the following conditions. went. Plating bath: Cu concentration 45 g / l, H 2 SO 4 200 g
/ L, bath temperature 60 ° C.
【００１６】めっき条件：電流密度1.５Ａ／dm2 ，浴を
撹拌、通電時間２４０時間。 めっき処理後、モールドを取出し、マスキング層３を剥
離除去した。減耗個所は電解銅で埋まっていた。しか
も、全体として形状変化は全くなかった。なお、電解銅
の表面は若干凹凸になっていたので、この部分を研磨し
た。補修後のモールドは、そのままＥＳＲ操業に再使用
することができた。Plating conditions: current density of 1.5 A / dm 2 , bath agitation, energization time 240 hours. After the plating treatment, the mold was taken out and the masking layer 3 was peeled and removed. The depleted area was filled with electrolytic copper. Moreover, there was no change in shape as a whole. Since the surface of the electrolytic copper was slightly uneven, this portion was polished. The repaired mold could be reused for ESR operation as it was.
【００１７】[0017]
【発明の効果】以上の説明で明らかなように、本発明方
法によれば、減耗個所にのみ選択的に銅を電着してモー
ルドの内壁面の面の状態を元の平坦な面にすることがで
きる。しかも、この過程でモールドの変形は全く起こら
ない。したがって、本発明方法は、使用時に異常減耗し
て使用不能になった銅製の鋳造モールドを再使用できる
状態に復元する補修方法としてその工業的価値は大であ
る。As is apparent from the above description, according to the method of the present invention, copper is selectively electrodeposited only on the wear-removed portions to bring the inner wall surface of the mold into the original flat surface. be able to. Moreover, no deformation of the mold occurs during this process. Therefore, the method of the present invention has a great industrial value as a repair method for restoring a copper casting mold that has become unusable due to abnormal wear during use to a reusable state.
【図１】内壁面が減耗した鋳造モールドにマスキング層
を形成した状態を示す一部切欠断面図である。FIG. 1 is a partially cutaway cross-sectional view showing a state in which a masking layer is formed on a casting mold whose inner wall surface is depleted.
【図２】電解めっきを行う状態を示す概略図である。FIG. 2 is a schematic view showing a state of performing electrolytic plating.
１ 銅製鋳造モールド ２ 減耗箇所 ２ａ 減耗箇所２の露出面 ３ マスキング層 ４ 銅めっき浴 ５ 直流電源 ６ 不溶性電極 1 Copper casting mold 2 Depleted part 2a Exposed surface of depleted part 3 Masking layer 4 Copper plating bath 5 DC power supply 6 Insoluble electrode
Claims (1)
の表面部分にマスキング処理が施されている前記銅製鋳
造モールドを銅めっき浴に浸漬し、電解めっき法で、前
記減耗個所に電解銅を析出させて肉盛りすることを特徴
とする銅製鋳造モールドの補修方法。1. A copper casting mold, the surface of which is masked on the other surface of the copper casting mold excluding the wear portion, is immersed in a copper plating bath, and electrolytic copper is applied to the wear portion by electrolytic plating. A method for repairing a copper casting mold, which comprises depositing and overlaying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5143596A JPH071086A (en) | 1993-06-15 | 1993-06-15 | Method for repairing copper-made casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5143596A JPH071086A (en) | 1993-06-15 | 1993-06-15 | Method for repairing copper-made casting mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH071086A true JPH071086A (en) | 1995-01-06 |
Family
ID=15342404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5143596A Pending JPH071086A (en) | 1993-06-15 | 1993-06-15 | Method for repairing copper-made casting mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH071086A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005527705A (en) * | 2002-05-27 | 2005-09-15 | コンカスト アクチェンゲゼルシャフト | Method for electrolytic coating of continuous casting mold |
| WO2011038704A2 (en) | 2009-09-29 | 2011-04-07 | Egon Evertz K.G. (Gmbh & Co.) | Die for continuous casting |
| KR101284563B1 (en) * | 2011-07-13 | 2013-07-11 | 와이엠씨 주식회사 | Anodizing apparatus for rotary target |
| WO2014142214A1 (en) * | 2013-03-15 | 2014-09-18 | 住友化学株式会社 | Dent defect repairing method for anti-glare processing mold |
| KR20200048160A (en) * | 2018-10-29 | 2020-05-08 | 주식회사 포스코 | Mold and manufacturing method of the same |
| WO2020233026A1 (en) * | 2019-05-22 | 2020-11-26 | 安徽马钢表面技术股份有限公司 | Mold copper plate and layered plating process therefor |
-
1993
- 1993-06-15 JP JP5143596A patent/JPH071086A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005527705A (en) * | 2002-05-27 | 2005-09-15 | コンカスト アクチェンゲゼルシャフト | Method for electrolytic coating of continuous casting mold |
| WO2011038704A2 (en) | 2009-09-29 | 2011-04-07 | Egon Evertz K.G. (Gmbh & Co.) | Die for continuous casting |
| WO2011038704A3 (en) * | 2009-09-29 | 2011-08-18 | Egon Evertz K.G. (Gmbh & Co.) | Die for continuous casting |
| CN102421944A (en) * | 2009-09-29 | 2012-04-18 | 埃贡埃弗兹两合公司（有限公司及两合公司） | Die for continuous casting |
| US8813825B2 (en) | 2009-09-29 | 2014-08-26 | Egon Evertz K.G. (Gmbh & Co.) | Permanent mold for continuous casting |
| KR101284563B1 (en) * | 2011-07-13 | 2013-07-11 | 와이엠씨 주식회사 | Anodizing apparatus for rotary target |
| WO2014142214A1 (en) * | 2013-03-15 | 2014-09-18 | 住友化学株式会社 | Dent defect repairing method for anti-glare processing mold |
| KR20200048160A (en) * | 2018-10-29 | 2020-05-08 | 주식회사 포스코 | Mold and manufacturing method of the same |
| WO2020233026A1 (en) * | 2019-05-22 | 2020-11-26 | 安徽马钢表面技术股份有限公司 | Mold copper plate and layered plating process therefor |
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