JPS58218351A - Casting mold for continuous casting and its production - Google Patents
Casting mold for continuous casting and its productionInfo
- Publication number
- JPS58218351A JPS58218351A JP10165482A JP10165482A JPS58218351A JP S58218351 A JPS58218351 A JP S58218351A JP 10165482 A JP10165482 A JP 10165482A JP 10165482 A JP10165482 A JP 10165482A JP S58218351 A JPS58218351 A JP S58218351A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- mold
- nickel
- continuous casting
- alloy
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/059—Mould materials or platings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は耐久性に富み、かつブレークアウトを起こさな
い連続鋳造用鋳型に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a continuous casting mold that is highly durable and does not cause breakouts.
連続鋳造用鋳型は通常熱伝導性に富む銅若しくはその合
金製鋳型本体に種々の耐熱性、耐摩耗性材料を表面コー
ティングして用いられているが、仁れら表面コーティン
グ層の密着性や凝固シェルの焼付性等の点でなお多くの
問題を残している。Continuous casting molds are usually made of copper or its alloy, which has high thermal conductivity, and are coated with various heat-resistant and wear-resistant materials. Many problems still remain in terms of shell seizure properties, etc.
特に操業中に伺らかの原因で成長過程にある凝固シール
がモールドパウダー膜を、破り直接鋳型内表面と接し、
該部所にて焼付現象を起こし、凝固シェルが破断される
事により起こる所謂拘束性ブレークアウトが最近大きな
問題となって来ている。Especially during operation, the solidified seal in the growing process breaks the mold powder film and comes into direct contact with the inner surface of the mold.
Lately, so-called restraint breakout, which occurs when the solidified shell is broken due to a seizure phenomenon at this location, has become a major problem.
この拘束性ブレークアウトシモールドパウダーの供給不
良による凝固シェルの焼付が主原因であるので、モール
ドパウダーの供給が円滑に行なわれ、しかも凝固シェル
との焼付がない鋳型を提供しようとするのが本発明の目
的であり、その要旨は析出硬化型銅合金製鋳型の内表面
上に、ニッケルメッキ胴が装着され、同メッキ層上に二
、ケル基自溶性合金溶射層が装着され、同溶射層上に更
１ζクロム炭化物層が装着された仁とを特徴とする連続
鋳造用鋳型並びに、析出硬化型銅合金製鋳型本体の内表
面上に、アンダーコート材としてニッケルメッキを行な
い、その上面にニッケル基自溶性合金溶射層を溶射し、
同溶射胴の上面に更にクロムメッキ層を施し、その後上
記溶剤層を再溶融させ鋳型本体を溶体化させ、しかもク
ロムメッキ層を一溶射層中に含まれる炭素と反応させる
に必要な温度で所要時間加熱保持した後、急冷を行ない
次いで鋳型本体の時効加熱処理を行なうことを特徴とす
る連続鋳造用鋳型の製造方法である。The main cause of this restraining breakout is seizure of the solidified shell due to insufficient supply of mold powder, so it is essential to provide a mold that allows smooth supply of mold powder and does not seize with the solidified shell. The purpose and gist of the invention is that a nickel-plated shell is mounted on the inner surface of a precipitation-hardened copper alloy mold, a second, Kel-based self-fusing alloy sprayed layer is mounted on the plated layer, and the sprayed layer is Continuous casting molds are characterized by having an additional 1ζ chromium carbide layer on top, and the inner surface of the precipitation hardening copper alloy mold body is plated with nickel as an undercoat material, and the upper surface is coated with nickel. Spray a base self-fusing alloy spray layer,
A chrome plating layer is further applied to the top surface of the spray barrel, and then the solvent layer is remelted and the mold body is made into a solution, at the temperature required to cause the chrome plating layer to react with the carbon contained in the sprayed layer. This method of manufacturing a continuous casting mold is characterized in that after being heated and maintained for a period of time, it is rapidly cooled and then the mold body is subjected to an aging heat treatment.
本発明鋳型は１、最上面に耐摩耗性、溶鋼及び凝し
固シェルとの耐）焼付性に優れたクロム炭化物層が装着
されている”継、そしてそのクロム炭化物層の形成のさ
せ方として下地の溶剤層内に含有されている少社の炭素
を利用してクロムメッキ層との間で炭化反応を起こさせ
てクロム炭化物を形成するという点に大きな特徴がある
。The mold of the present invention has 1) a chromium carbide layer on the top surface that has excellent wear resistance and seizure resistance with molten steel and solidified shell; and a method for forming the chromium carbide layer. The major feature of this method is that it utilizes the carbon contained in the underlying solvent layer to cause a carbonization reaction with the chromium plating layer to form chromium carbide.
以下図面を参酌し乍ら本願発明を詳述すれば、まずクロ
ム−銅、クロム−ジルコニウム−銅、ベリリウム−銅等
の析出硬化型銅合金から成る鋳型本体（１１の内表面化
アンダーコート材として二、ケルメッキ胴（２１を施し
、その後通常は脱水素処理（３００〜４００℃、１時間
以上加熱）を行ない、次いで二、ケル基自溶性合金溶射
剃（３）を溶射形成する。The present invention will be described in detail with reference to the drawings below. First, the mold body (11) made of a precipitation hardening copper alloy such as chromium-copper, chromium-zirconium-copper, beryllium-copper, etc. 2. Kel-plated shell (21) is applied, followed by dehydrogenation treatment (heating at 300 to 400° C. for 1 hour or more), and then 2. Kel-based self-fusing alloy sprayed shaver (3) is formed by thermal spraying.
この場合に溶剤層（３）の厚さを第１図の様に全面均一
厚さとする場合と、第２図の様に鋳型上部から鋳型下部
になるにつれて順次層厚とする場合とがある。In this case, the thickness of the solvent layer (3) may be made uniform over the entire surface as shown in FIG. 1, or may be made sequentially thick from the top of the mold to the bottom of the mold as shown in FIG.
スルいる二、ケル基自溶性合金は例えば下表の如き組成
のものを用い、構成成分として炭素を含有する事を゛必
須要件とする。Second, the Kel-based self-fusing alloy has a composition as shown in the table below, and it is essential that it contains carbon as a constituent.
次いで上記ニッケル基自溶性合金溶射層（３）の上面に
、クロムメッキ層（４）を形成する。仁のクロムメッキ
層（４）も全面が均一厚のもの（第１図参照）と、鋳型
上部から鋳型下部になるにつれ順次胴厚となるもの（第
３図参照）とがある。この様ξこクロムメッキ層（４）
をも形成した後に、約８００〜１０００℃で１〜３時間
加熱保持する。この加熱によりΦ鋳型本体が溶体化され
、◎アンダーコート材たるニッケル胴が鋳型本体及び溶
剤層の双方と互に拡散しそこに拡散合金層を形成し互に
伸開に結合し。Next, a chromium plating layer (4) is formed on the upper surface of the nickel-based self-fusing alloy sprayed layer (3). There are two types of chrome plating layer (4) with uniform thickness over the entire surface (see Fig. 1), and those whose thickness gradually increases from the top of the mold to the bottom of the mold (see Fig. 3). This kind of chromium plating layer (4)
After also forming, the mixture is heated and held at about 800 to 1000°C for 1 to 3 hours. By this heating, the Φ mold body is made into a solution, and the nickel shell, which is the undercoat material, diffuses into both the mold body and the solvent layer, forming a diffusion alloy layer there, and bonding with each other in an expanding and expanding manner.
Ｏ溶剤層が再溶融され各溶射粒子同士が強固に結合され
ると共に封孔処理がなされ、○クロムと炭素は親和力が
大である為に、クロムメッキ層のクロムと溶剤胴中の炭
素とが反応を起こしクロムメッキ層を炭化クロム層に変
えるという反応が起こる。そして特に上記Ｏのクロムの
炭化反応がル要である為に、このｅｏｏ＝１ｏｏｏ℃、
１〜３時間の加熱−によりクロムメッキ層が酸化しない
様に真空中。The O solvent layer is remelted, each sprayed particle is firmly bonded to each other, and the pores are sealed. O Since chromium and carbon have a strong affinity, the chromium in the chrome plating layer and the carbon in the solvent barrel are bonded together. A reaction occurs that changes the chromium plating layer to a chromium carbide layer. In particular, since the above-mentioned carbonization reaction of chromium is necessary, eoo=1ooo℃,
Heat for 1 to 3 hours in vacuum to prevent oxidation of the chrome plating layer.
不活性カス中あるいは所適な塩浴中などで行なう事が望
ましい。It is preferable to carry out this process in an inert scum or a suitable salt bath.
その後急冷を行なう、この急冷というのは銅合金！ｌ＋
鋳型本体にとっての急冷であり、銅合金は熱伝導性が良
好であるので通常の空冷であっても急冷される。水冷、
油冷又は空冷で急冷した後溶体化された鋳型本体を析出
硬化させる為に、鋳型本体の成分によって異なるが通常
４００〜５００℃、５〜４時間の時効加熱処理を行なう
。After that, it is rapidly cooled.This rapid cooling is a copper alloy! l+
This is rapid cooling for the mold body, and since copper alloy has good thermal conductivity, it can be rapidly cooled even with normal air cooling. water cooling,
After quenching with oil or air cooling, the solution-treated mold body is precipitation-hardened, and is usually subjected to an aging heat treatment at 400 to 500° C. for 5 to 4 hours, depending on the components of the mold body.
以上の如き手段により製造した本発明鋳型は、鋳型本体
は析出強化され、溶射層はアンダーコート材たるニッケ
ルが溶剤層とも鋳型本体とも拡散しあっているので鋳型
本体に強固に結合しておりかつ最表面に形成されたクロ
２゛□炭化物層は溶射層１１、、、ｌｉ。In the mold of the present invention manufactured by the method described above, the mold body is strengthened by precipitation, and the thermal spray layer is firmly bonded to the mold body because nickel, which is an undercoat material, diffuses into both the solvent layer and the mold body. The black carbide layer formed on the outermost surface is the sprayed layer 11,...li.
との反応によって生じたも（７） ＋’“：ある為に、
あらためて炭化クロムを溶射等で装着した場合に比し著
しく密着強度が大であり、全被覆胴が一体となったもの
が得られる。そして最上面の炭化クロムはその硬さがＨ
ｖ２０００以上もありかつ高温域でもその硬さの低下は
少ないので高温域での耐摩耗性に優れ、しかも溶鋼ある
いは凝固シェルとの焼付性も殆んど生じない。(7) ＋'“: Because of the
The adhesion strength is significantly greater than when chromium carbide is attached by thermal spraying or the like, and the entire coated shell is integrated. The hardness of the chromium carbide on the top surface is H.
V2000 or more, and its hardness decreases little even in high temperature ranges, so it has excellent wear resistance in high temperature ranges, and also hardly seizes with molten steel or solidified shells.
なお鋳型の両側面の耐熱、耐摩耗性を高める為又はその
密着性を高める為に、溶射層、クロム炭化物層を第４図
及び第５図に示す様に鋳型本体の両側面の一部あるいは
全部まで巻込み延長しておく場合もある。In order to increase the heat resistance and abrasion resistance of both sides of the mold, or to increase their adhesion, a thermal spray layer or a chromium carbide layer is applied to a part or part of both sides of the mold body as shown in Figures 4 and 5. In some cases, it may be extended to include all the parts.
以上述べて来た様に本発明鋳型によれば、耐摩耗性、耐
焼付性に優れた表面コーティング層を強固に密着する事
カッ能で、得られる鋳型は耐久性に富みブレークアウト
を起こす事なく長期に渡つい
て安定して用いる：１−が出来るという効果がある。As described above, according to the mold of the present invention, it is possible to firmly adhere the surface coating layer with excellent wear resistance and seizure resistance, and the mold obtained is highly durable and does not cause breakout. It has the effect of being able to be used stably over a long period of time without any problems.
４、。ヵ。、工。□ｌｌｕ、。4. Ka. , Eng. □llu,.
第１図は本発明鋳型の斜視図、第２図及び第３図はそれ
ぞれ同変形の側面図、第４図及び第５図はそれぞれ同他
の変形の斜視図。FIG. 1 is a perspective view of the mold of the present invention, FIGS. 2 and 3 are side views of the same modification, and FIGS. 4 and 5 are perspective views of the same modification.
図中、（ｌ）：鋳型本体 （２）二ニッケルメッキ゛鵬 （３）：溶射層 （４）：クロムメ、キ層 第１図 第４図 第２図 第３図 第５図In the figure, (l): mold body (2) Double nickel plating (3): Thermal spray layer (4): Kurome, Ki layer Figure 1 Figure 4 Figure 2 Figure 3 Figure 5
Claims (1)
メッキ胴が装着され、同メ、キ層上にニッケル基自溶性
合金溶射層が装着され、同溶射層上に更にクロム炭化物
層が装着された仁とを特徴とする連続鋳造用鋳型。 ２ 二、ケル基自溶性合金溶射胴が鋳型上部から鋳型下
部になるにつれ順次層厚となることを特徴とする特許請
求の範囲第１項記載の一連続鋳造用鋳型。 ８、 クロム炭化物層が鋳型上部から鋳型下部になるに
つれ順次層厚となることを特徴とする特許請求の範囲第
１項若しくは第２項記載の連続鋳造用鋳型。 ４、 析出硬化型銅合金製鋳型本体の内表面上に。 アンダーコート材として二、ケルメッキを行ない、その
上面にニッケル基自治性合金溶剤胴を溶射し、同溶射側
の上面に更にクロムメッキ層を施し、その後上記溶射層
を再溶融させ鋳型本体を溶体化させ、しかもクロムメッ
キ層を溶射胴中に含まれる炭素と反応させる蓄こ必要な
温度で所要時間加熱保持した後、急冷を行ない次いで鋳
型本体の時効加熱処理を行なうことを特徴とする連続鋳
造用鋳型の製造方法。 ６、二、ケル基自溶性合金溶射胴を鋳型上部から鋳型下
部になるにつれ順次層厚とすることを特徴とする特許請
求の範囲第４項記載の連続鋳造用鋳型の製造方法。 ６、 クロムメッキ層を鋳型上部から鋳型下部になるに
つれ順次層厚とする仁とを特徴とする特許請求の範囲第
４項若しくは第５項記載の連続鋳造用鋳型の製造方法。[Claims] 1. A nickel-plated shell is mounted on the inner surface of a precipitation-hardened copper alloy mold, a nickel-based self-fusing alloy sprayed layer is mounted on the coating layer, and a nickel-based self-fusing alloy sprayed layer is mounted on the coating layer. A mold for continuous casting characterized by a layer further equipped with a chromium carbide layer. 2. The mold for continuous casting according to claim 1, wherein the coating thickness of the Kel-base self-fusing alloy thermal spraying barrel increases gradually from the upper part of the mold to the lower part of the mold. 8. The continuous casting mold according to claim 1 or 2, wherein the chromium carbide layer becomes thicker from the upper part of the mold to the lower part of the mold. 4. On the inner surface of the precipitation hardening copper alloy mold body. Second, Kel plating is performed as an undercoat material, a nickel-based self-governing alloy solvent shell is thermally sprayed on the top surface, a chrome plating layer is further applied on the top surface of the same thermal spraying side, and then the above thermal sprayed layer is remelted to form a solution of the mold body. For continuous casting, the chrome plating layer is reacted with carbon contained in the thermal spray barrel, heated and maintained at a necessary temperature for a required period of time, and then rapidly cooled and then subjected to aging heat treatment of the mold body. Mold manufacturing method. 6. 2. The method of manufacturing a continuous casting mold according to claim 4, characterized in that the layer thickness of the Kel-based self-fusing alloy spray barrel is made sequentially from the upper part of the mold to the lower part of the mold. 6. The method for manufacturing a continuous casting mold according to claim 4 or 5, characterized in that the chromium plating layer is gradually thickened from the upper part of the mold to the lower part of the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10165482A JPS58218351A (en) | 1982-06-12 | 1982-06-12 | Casting mold for continuous casting and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10165482A JPS58218351A (en) | 1982-06-12 | 1982-06-12 | Casting mold for continuous casting and its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58218351A true JPS58218351A (en) | 1983-12-19 |
| JPH0153145B2 JPH0153145B2 (en) | 1989-11-13 |
Family
ID=14306366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10165482A Granted JPS58218351A (en) | 1982-06-12 | 1982-06-12 | Casting mold for continuous casting and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58218351A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61289948A (en) * | 1985-06-14 | 1986-12-19 | Mitsubishi Heavy Ind Ltd | Continuous casting mold |
| WO1998009750A1 (en) * | 1996-09-03 | 1998-03-12 | Ag Industries, Inc. | Improved mold surface for continuous casting and process for making |
| CN1053706C (en) * | 1997-08-29 | 2000-06-21 | 鞍山钢铁集团公司 | Dissolving casting technology for chromium zirconium copper slab used for continuous casting crystallizer |
-
1982
- 1982-06-12 JP JP10165482A patent/JPS58218351A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61289948A (en) * | 1985-06-14 | 1986-12-19 | Mitsubishi Heavy Ind Ltd | Continuous casting mold |
| WO1998009750A1 (en) * | 1996-09-03 | 1998-03-12 | Ag Industries, Inc. | Improved mold surface for continuous casting and process for making |
| GB2332635A (en) * | 1996-09-03 | 1999-06-30 | Ag Industries Inc | Improved mold surface for continuous casting and process for making |
| GB2332635B (en) * | 1996-09-03 | 2000-07-05 | Ag Industries Inc | Improved mold surface for continuous casting and process for making |
| CN1053706C (en) * | 1997-08-29 | 2000-06-21 | 鞍山钢铁集团公司 | Dissolving casting technology for chromium zirconium copper slab used for continuous casting crystallizer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0153145B2 (en) | 1989-11-13 |
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