JPH10230348A - Mold for continuous casting - Google Patents
Mold for continuous castingInfo
- Publication number
- JPH10230348A JPH10230348A JP5416797A JP5416797A JPH10230348A JP H10230348 A JPH10230348 A JP H10230348A JP 5416797 A JP5416797 A JP 5416797A JP 5416797 A JP5416797 A JP 5416797A JP H10230348 A JPH10230348 A JP H10230348A
- Authority
- JP
- Japan
- Prior art keywords
- continuous casting
- thermal
- spraying
- casting mold
- mold
- 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.)
- Withdrawn
Links
- 238000009749 continuous casting Methods 0.000 title claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 41
- 238000007747 plating Methods 0.000 claims abstract description 25
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 21
- 239000000956 alloy Substances 0.000 claims abstract description 21
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 20
- 239000011195 cermet Substances 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052802 copper Inorganic materials 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 238000005507 spraying Methods 0.000 claims description 53
- 238000010285 flame spraying Methods 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 238000007788 roughening Methods 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910052803 cobalt Inorganic materials 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 229910018487 Ni—Cr Inorganic materials 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 12
- 238000007751 thermal spraying Methods 0.000 abstract description 12
- 230000035939 shock Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229910019863 Cr3 C2 Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 29
- 238000000576 coating method Methods 0.000 description 29
- 230000015572 biosynthetic process Effects 0.000 description 8
- 238000005266 casting Methods 0.000 description 8
- 238000005755 formation reaction Methods 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 5
- 230000005499 meniscus Effects 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 4
- 239000010953 base metal Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001965 increased Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910017526 Cu-Cr-Zr Inorganic materials 0.000 description 2
- 229910017810 Cu—Cr—Zr Inorganic materials 0.000 description 2
- 229910017709 Ni Co Inorganic materials 0.000 description 2
- 229910003267 Ni-Co Inorganic materials 0.000 description 2
- 229910003262 Ni‐Co Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- MOVRKLZUVNCBIP-RFZYENFJSA-N cortancyl Chemical compound C1CC2=CC(=O)C=C[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@@](C(=O)COC(=O)C)(O)[C@@]1(C)CC2=O MOVRKLZUVNCBIP-RFZYENFJSA-N 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N Boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N Sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910000743 fusible alloy Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007749 high velocity oxygen fuel spraying Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鉄鋼等の連続鋳造
用鋳型に係り、更に詳しくは、耐熱性、耐食性、耐摩耗
性に優れ、熱処理を必要としない複合材料を鋳型内面に
溶射した連続鋳造用鋳型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous casting mold for steel or the like, and more particularly, to a continuous casting method in which a composite material having excellent heat resistance, corrosion resistance and wear resistance and not requiring heat treatment is sprayed on the inner surface of the mold. The present invention relates to a casting mold.
【０００２】[0002]
【従来の技術】従来、内面を溶射処理して耐摩耗性を高
めた連続鋳造用鋳型の一形態として、例えば特公昭６１
−１５７８２号公報に開示された連続鋳造用鋳型があ
る。この連続鋳造用鋳型は、析出硬化型合金からなる母
材表面に、Ｎｉ等の下地めっきをした後、その上にＮｉ
・Ｃｒ系の自溶性合金を溶射し、更に、約１０００℃に
加熱して、母材銅板とＮｉめっきとの間、及び、Ｎｉめ
っきと溶射皮膜との間に、それぞれ拡散層を形成し、冶
金的に結合させて、母材銅板の上に強固な耐摩耗性を有
する溶射皮膜を形成したものである。2. Description of the Related Art Conventionally, as one form of a continuous casting mold in which the inner surface is subjected to a thermal spraying treatment to enhance wear resistance, for example, Japanese Patent Publication No. Sho 61
There is a continuous casting mold disclosed in US Pat. This continuous casting mold is obtained by plating a base material made of a precipitation hardening type alloy with a base such as Ni,
Spraying a Cr-based self-fluxing alloy, and further heating to about 1000 ° C. to form a diffusion layer between the base copper plate and the Ni plating, and between the Ni plating and the sprayed coating, respectively. It is a metallurgical bond formed on the base metal copper plate to form a thermal sprayed coating having strong wear resistance.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前記公
報記載の連続鋳造用鋳型においては、鋳型内面に溶射皮
膜を形成しないものに比較して、鋳片が当接する部位、
即ち、鋳型内面下部の耐摩耗性は向上できるが、最も高
温となる溶鋼のメニスカス近傍では、この溶射皮膜の熱
伝導性が低いため、クラックが生じるという問題があ
る。また、溶射後１０００℃程度に加熱することによっ
て母材銅板が変形するので、歪み取り作業を行う必要が
ある。また、歪み取りを行っても連続鋳造用鋳型のバッ
クフレームに組み込めないことがあり、仮に組み込めた
としても平坦精度が劣るという問題がある。また、母材
の強度回復のため、時効硬化熱処理を行う必要もあり、
その熱処理工程が極めて複雑多岐にわたり、大変面倒で
ある。そこで、溶射後、熱処理をしないことも考えられ
るが、この場合、母材と溶射皮膜との密着力が２〜３ｋ
ｇ／ｍｍ2 と小さくなって、長期の使用が困難になると
いう問題がある。本発明はかかる事情に鑑みてなされた
もので、鋳型内面上部では、高温の溶鋼に対する耐クラ
ック性、即ち、耐熱性、耐熱衝撃性に富み、鋳型内面下
部では、鋳片に対する耐摩耗性に富んで、しかも、熱処
理を行うことなく、製造が可能で、長期の寿命を有する
連続鋳造用鋳型を提供することを目的とする。However, in the continuous casting mold described in the above-mentioned publication, a portion where the slab comes into contact,
That is, although the abrasion resistance of the lower portion of the inner surface of the mold can be improved, there is a problem that the thermal spray coating has low thermal conductivity near the meniscus of the molten steel where the temperature is the highest, so that cracks are generated. Further, since the base metal copper plate is deformed by heating to about 1000 ° C. after the thermal spraying, it is necessary to perform a strain removing operation. Further, even if the strain is removed, it may not be able to be incorporated into the back frame of the continuous casting mold, and even if it is incorporated, there is a problem that the flatness accuracy is poor. In order to recover the strength of the base material, it is necessary to perform age hardening heat treatment.
The heat treatment process is extremely complicated and diverse, and is very troublesome. Therefore, it is conceivable that no heat treatment is performed after thermal spraying. In this case, however, the adhesion between the base material and the thermal spray coating is 2-3 k.
g / mm 2 , which makes long-term use difficult. The present invention has been made in view of such circumstances, and the upper part of the inner surface of the mold has excellent crack resistance to high-temperature molten steel, that is, heat resistance and thermal shock resistance, and the lower part of the inner surface of the mold has excellent wear resistance to slabs. It is another object of the present invention to provide a continuous casting mold that can be manufactured without heat treatment and has a long life.
【０００４】[0004]
【課題を解決するための手段】前記目的に沿う請求項１
記載の連続鋳造用鋳型は、溶鋼を連続鋳造する場合に使
用する連続鋳造用鋳型において、鋳型内面に、上部から
下部にかけて順次、銅母材又はその上にＮｉめっきを施
した金属素地部、Ｎｉ・Ｃｒ系の自溶性合金が高速火炎
溶射された第１の溶射皮膜部、Ｃｒ3 Ｃ2 ／Ｎｉ・Ｃｒ
系サーメット微粉末が高速火炎溶射された第２の溶射皮
膜部、及び、ＷＣ／Ｃｏ系サーメット微粉末が、高速火
炎溶射された第３の溶射皮膜部がそれぞれ形成されてい
る。請求項２記載の連続鋳造用鋳型は、請求項１記載の
連続鋳造用鋳型において、前記第１〜第３の溶射皮膜部
の下地として、Ｎｉ、Ｃｏ又はこれらの合金からなる下
地めっきがなされて、しかも、その表面には、Ｒｚ＝５
０〜１５０μｍの粗面化処理がなされている。ここで、
高速火炎溶射とは火炎（フレーム）の速度が通常の溶射
に比較して３倍以上の速さ（具体例としては、２０００
〜２７００ｍ／秒）の溶射をいう。According to the present invention, there is provided a semiconductor device comprising:
The continuous casting mold described in the continuous casting mold used when continuously casting molten steel, the inner surface of the mold, from the top to the bottom, in order from the top, the copper base material or a metal base portion subjected to Ni plating thereon, Ni・ First thermal spray coating of high-speed flame sprayed Cr-based self-fluxing alloy, Cr 3 C 2 /Ni.Cr
A second thermal spray coating portion on which high-speed flame spraying of the system cermet fine powder and a third thermal spray coating portion on which high-speed flame spraying of WC / Co cermet fine powder are formed. The casting mold for continuous casting according to claim 2 is the casting mold for continuous casting according to claim 1, wherein a base plating made of Ni, Co, or an alloy thereof is formed as a base for the first to third thermal spray coating portions. Moreover, Rz = 5 on the surface.
A surface roughening treatment of 0 to 150 μm is performed. here,
High-speed flame spraying means that the speed of the flame (flame) is three times or more that of normal spraying (specifically, 2000 times).
２2700 m / sec).
【０００５】また、鋳型の内面に溶射皮膜部を形成する
場合、この溶射皮膜部の形成範囲は、鋳型内に貯溜され
る溶鋼のメニスカス（通常、鋳型の上端より１００〜１
５０μｍ程度の所）より下側にするのが好ましい。最も
高温となるメニスカス近傍で溶射皮膜部にヒートクラッ
クが生じたり、最悪の場合、剥離したりするのを防止で
きるからである。具体的には、鋳造条件や鋳型の全高
（Ｌ1 ）にも依るが、鋳型の下端より、全高の約１／５
〜３／５程度、好ましくは約２／５〜３／５程度とする
のが望ましい。溶射皮膜部の形成範囲が、鋳型の下端よ
り、全高の３／５を越えると、鋳造条件や鋳型の全高に
も依るが、溶射皮膜にヒートクラックが生じ易くなり、
逆に、鋳型の下端より、全高の２／５未満になると、摩
耗防止効果が低下して、早期に使用できなくなり、特
に、１／５未満になると、その傾向が著しくなる。ま
た、第１〜第３の溶射皮膜部の形成範囲は、特に、規定
されるものではなく、上述した溶射皮膜部形成範囲で、
高さ方向に等配分するなど、鋳造条件などに応じて適宜
選択してよい。また、第１〜第３の溶射皮膜部の厚み
は、同じにしてもよいが、鋳型上部から下部にかけて徐
々に厚くすると、耐摩耗性を向上することができる。な
お、第１〜第３の溶射皮膜部の下地として、Ｎｉ、Ｃｏ
又はこれらの合金からなるめっきを形成するだけでな
く、金属素地部にも、上述したＮｉめっきのほか、Ｃｏ
めっき又はＮｉ−Ｃｏめっきを施してよい。これらめっ
きが溶射皮膜に比べて熱伝導率が良いため、ヒートクラ
ックの発生を抑えつつ、酸化して脆くなり易い母材の表
面を保護できる。When a sprayed coating is formed on the inner surface of a mold, the range of formation of the sprayed coating is limited to a meniscus of molten steel stored in the mold (usually 100 to 1 from the upper end of the mold).
(At about 50 μm). This is because heat cracks can be prevented from occurring in the thermal spray coating portion near the meniscus where the temperature becomes the highest, and in the worst case, peeling can be prevented. More specifically, it depends on the casting conditions and the total height (L 1 ) of the mold, but is about 1/5 of the total height from the lower end of the mold.
About 3/5, preferably about 2/5 to 3/5. If the formation range of the thermal spray coating exceeds 3/5 of the total height from the lower end of the mold, heat cracks are likely to occur in the thermal spray coating, depending on the casting conditions and the total height of the mold,
Conversely, if the height is less than 2/5 of the total height from the lower end of the mold, the effect of preventing abrasion is reduced, and it becomes impossible to use the mold early. In particular, if it is less than 1/5, the tendency becomes remarkable. In addition, the formation range of the first to third thermal spray coating portions is not particularly limited, and the above-described thermal spray coating portion forming range includes:
It may be appropriately selected according to casting conditions and the like, such as equal distribution in the height direction. The thickness of the first to third thermal spray coatings may be the same, but if the thickness is gradually increased from the upper part to the lower part of the mold, the wear resistance can be improved. In addition, Ni, Co was used as a base of the first to third thermal spray coating portions.
In addition to forming a plating made of these alloys, in addition to the above-described Ni plating,
Plating or Ni-Co plating may be applied. Since these platings have a higher thermal conductivity than the thermal sprayed coating, it is possible to protect the surface of the base material, which is easily oxidized and brittle, while suppressing the occurrence of heat cracks.
【０００６】従って、請求項１、２記載の連続鋳造用鋳
型においては、溶鋼を連続鋳造する際、溶鋼のメニスカ
ス近傍となる鋳型内面上部は、銅母材を露出するか、そ
の上にＮｉめっきを施した金属素地部としたので、従来
の溶射皮膜のクラックを防止して、耐熱性、耐熱衝撃性
を向上できることはもちろん、この金属素地部の下部
に、上側より順次、耐熱性、耐熱衝撃に優れるＮｉ・Ｃ
ｒ系の自溶性合金の第１の溶射皮膜部、Ｃｒ3 Ｃ2 ／Ｎ
ｉ・Ｃｒ系の第２の溶射皮膜部、硬くて耐摩耗性に優れ
るＷＣ／Ｃｏ系の第３の溶射皮膜部を形成したので、上
側より下部にかけて、耐熱性、耐熱衝撃性、耐摩耗性を
傾斜的に発現させることができる。しかも、上述した第
１〜第３の溶射皮膜部は、高速火炎溶射によって形成さ
れているので、上述したように、高速火炎溶射における
フレーム速度が、例えば、２０００〜２７００ｍ／秒
と、通常の火炎溶射（約３００ｍ／秒）やプラズマ溶射
（約８００ｍ／秒）に比較して大きいため、緻密で硬い
溶射皮膜を形成でき、従来のように、溶射後、熱処理を
行う必要もなく製造が可能となる。Therefore, in the continuous casting mold according to the first and second aspects, when the molten steel is continuously cast, the upper part of the inner surface of the mold near the meniscus of the molten steel exposes the copper base material or Ni plating thereon. The metal base is treated to prevent cracks in the conventional thermal spray coating and improve heat resistance and thermal shock resistance. Excellent Ni ・ C
First thermal spray coating of r-based self-fluxing alloy, Cr 3 C 2 / N
Since the i.Cr-based second sprayed coating and the WC / Co-based third sprayed coating that is hard and excellent in wear resistance are formed, heat resistance, thermal shock resistance, and wear resistance are applied from the upper side to the lower side. Can be expressed with a gradient. In addition, since the above-described first to third thermal spray coatings are formed by high-speed flame spraying, as described above, the flame speed in high-speed flame spraying is, for example, 2000 to 2700 m / sec, which is a normal flame. Compared to thermal spraying (approximately 300 m / sec) and plasma spraying (approximately 800 m / sec), it is possible to form a dense and hard sprayed coating, and it is possible to manufacture without the need for heat treatment after spraying as in the past. Become.
【０００７】もちろん、連続鋳造用鋳型の内面には、予
め適当な粗面化処理がなされているので、上述した溶射
皮膜の付着が良く、溶射皮膜の脱落が生じ難いことはい
うまでもない。特に、請求項２記載の連続鋳造用鋳型に
おいては、連続鋳造用鋳型の内面には、Ｎｉ、Ｃｏ又は
これらの合金からなるめっきが形成されているので、酸
化して脆くなり易い母材の表面を保護することができ
る。また、めっきの表面には、粗面化処理がなされてい
るので、上述した如く、溶射皮膜の密着強度を向上で
き、熱処理の必要性を解消することができる。なお、こ
こで、めっきや母材の表面粗度Ｒｚを５０μｍ未満にす
ると、表面が滑らか過ぎて、溶射皮膜の密着強度が１０
ｋｇ／ｃｍ2 以下と小さくなり、表面粗度が１５０μｍ
を越えると、溶射皮膜の表面粗度が大きくなって、拘束
性ブレークアウトが発生するなど、不安定操業を招くと
いう欠点がある。Of course, since the inner surface of the continuous casting mold has been subjected to an appropriate roughening treatment in advance, the above-mentioned sprayed coating is well adhered and the sprayed coating is hardly dropped. In particular, in the continuous casting mold according to the second aspect, since the plating made of Ni, Co or an alloy thereof is formed on the inner surface of the continuous casting mold, the surface of the base material which is easily oxidized and becomes brittle. Can be protected. Further, since the surface of the plating is subjected to a surface roughening treatment, as described above, the adhesion strength of the thermal spray coating can be improved, and the necessity of heat treatment can be eliminated. Here, when the surface roughness Rz of the plating or the base material is set to less than 50 μm, the surface is too smooth, and the adhesion strength of the thermal spray coating is 10 μm.
kg / cm 2 or less, and the surface roughness is 150 μm
Exceeding the limit causes a problem that unstable operation is caused, for example, the surface roughness of the thermal sprayed coating becomes large and restraint breakout occurs.
【０００８】[0008]
【発明の実施の形態】続いて、添付した図面を参照しつ
つ、本発明を具体化した実施の形態につき説明し、本発
明の理解に供する。 （第１の実施の形態）まず、図１〜図３を参照して、本
発明の第１の実施の形態に係る連続鋳造用鋳型Ａについ
て説明する。図１に示すように、連続鋳造用鋳型Ａは、
一対の長片Ｄ１、Ｄ２と、一対の短片Ｅ１、Ｅ２とを有
する枠状のものである。そして、図２に示すように、長
片Ｄ１（Ｄ２も同様であり、ここでは説明を省略する）
の母材２２の内面には、その上部から下部にかけて、順
次、母材２２の銅板を露出してなる金属素地部１０、Ｎ
ｉ・Ｃｒ系の自溶性合金を高速火炎溶射してなる厚さ
０．１〜２ｍｍの第１の溶射皮膜部１１、Ｃｒ3 Ｃ2 ／
Ｎｉ・Ｃｒ系サーメット微粉末を高速火炎溶射してなる
厚さ０．１〜２ｍｍの第２の溶射皮膜部１２、及び、Ｗ
Ｃ／Ｃｏ系サーメット微粉末を高速火炎溶射してなる厚
さ０．１〜２ｍｍの第３の溶射皮膜部１３が、それぞれ
形成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. (First Embodiment) First, a continuous casting mold A according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a continuous casting mold A is
It is a frame having a pair of long pieces D1, D2 and a pair of short pieces E1, E2. Then, as shown in FIG. 2, the long piece D1 (the same applies to D2, and the description is omitted here).
Of the base material 22 formed by sequentially exposing the copper plate of the base material 22 from the upper part to the lower part on the inner surface of the base material 22.
A first sprayed coating portion 11 having a thickness of 0.1 to 2 mm formed by high-speed flame spraying of an i.Cr-based self-fluxing alloy, Cr 3 C 2 /
A second sprayed coating portion 12 having a thickness of 0.1 to 2 mm formed by high-speed flame spraying of a Ni / Cr-based cermet fine powder;
Third thermal spray coating portions 13 each having a thickness of 0.1 to 2 mm formed by high-speed flame spraying of C / Co-based cermet fine powder are formed.
【０００９】また、図３に示すように、短片Ｅ１（Ｅ２
も同様であり、ここでは説明を省略する）の母材２３の
内面には、その上部から下部にかけて、順次、母材２３
の銅板を露出してなる金属素地部１４、Ｎｉ・Ｃｒ系の
自溶性合金を高速火炎溶射してなる厚さ０．１〜２ｍｍ
の第１の溶射皮膜部１５、Ｃｒ3 Ｃ2 ／Ｎｉ・Ｃｒ系サ
ーメット微粉末を高速火炎溶射してなる厚さ０．１〜２
ｍｍの第２の溶射皮膜部１６、及び、ＷＣ／Ｃｏ系サー
メット微粉末を高速火炎溶射してなる厚さ０．１〜２ｍ
ｍの第３の溶射皮膜部１７が、それぞれ形成されてい
る。なお、母材２２、２３において、第１の溶射皮膜部
１１、１５の形成部位を、第１の皮膜形成部位２２ａ、
２３ａ、第２の溶射皮膜部１２、１６の形成部位を、第
２の皮膜形成部位２２ｂ、２３ｂ、第３の溶射皮膜部１
３、１７の形成部位を、第３の皮膜形成部位２２ｃ、２
３ｃとする。As shown in FIG. 3, a short piece E1 (E2
The description is omitted here.) On the inner surface of the base material 23, the base material 23 is sequentially arranged from the upper part to the lower part.
Metal base portion 14 exposing a copper plate of a thickness of 0.1 to 2 mm formed by high-speed flame spraying of a Ni.Cr-based self-fluxing alloy
The first thermal spray coating unit 15, Cr 3 C 2 / Ni · Cr cermet fine powder obtained by high-speed flame spraying thickness of 0.1 to 2
mm 2nd thermal spray coating portion 16 and a thickness of 0.1 to 2 m formed by high-speed flame spraying of WC / Co-based cermet fine powder.
m of the third sprayed coating portions 17 are respectively formed. In the base materials 22 and 23, the formation site of the first sprayed coating portions 11 and 15 is referred to as a first coating formation site 22a,
23a, the second thermal spray coating portions 12 and 16 are formed by the second thermal spray coating portions 22b and 23b and the third thermal spray coating portion 1
The formation sites 3 and 17 are changed to the third film formation sites 22c and 2c.
3c.
【００１０】次に、図４を参照して、本実施の形態に係
る連続鋳造用鋳型Ａの製造方法について説明する。ま
ず、母材２２、２３の内面の所要箇所、即ち、第１〜第
３の皮膜形成部位２２ａ〜２２ｃ、２３ａ〜２３ｃを、
図示しない平面研削機で薄く（本実施の形態では０．１
〜２ｍｍ）削り取った後、この研削面にブラスト処理を
行って、表面粗度Ｒｚを５０〜１５０μｍ、好ましくは
７０〜１００μｍとする。この場合、ブラスト材（グリ
ッド）には、スチール、サンド等も使用できるが、投錨
効果を大きくするには、アルミナが最も良い。そこで、
本実施の形態では、粒度♯２０のアルミナのグリッド
を、空気圧を約３ｋｇ／ｃｍ2 で打ちつけるブラスト処
理を行った。Next, a method of manufacturing the continuous casting mold A according to the present embodiment will be described with reference to FIG. First, required portions of the inner surfaces of the base materials 22 and 23, that is, first to third film forming portions 22a to 22c and 23a to 23c are
Thin with a surface grinder (not shown) (0.1 in this embodiment).
〜2 mm) After the shaving, the ground surface is subjected to blasting to make the surface roughness Rz 50 to 150 μm, preferably 70 to 100 μm. In this case, steel, sand or the like can be used for the blast material (grid), but alumina is the best for increasing the anchoring effect. Therefore,
In the present embodiment, a blast treatment was performed in which an alumina grid having a particle size of # 20 was blown at an air pressure of about 3 kg / cm 2 .
【００１１】そして、前記粗面化処理を行った表面に、
高速火炎溶射機２１を用いて第１〜第３の皮膜形成部位
２２ａ〜２２ｃ、２３ａ〜２３ｃにそれぞれ第１〜第３
の溶射皮膜部１１〜１３、１５〜１７を形成する。な
お、この高速火炎溶射は、灯油（ケロシン）を燃料と
し、酸素を用いて化合させて２４００〜２７００℃の高
温で、２５００〜２７００ｍ／秒の高速ガスジェットを
作り、これにサーメット微粉末や自溶性合金粉末を乗せ
て溶融させ、高速度で（例えば、約７５０ｍ／秒）溶射
材料を表面に吹き付けて凝固・接合させるものである。
この際、サーメット微粉末や自溶性合金粉末は、粉末粒
度１０〜５０μｍ、好ましくは１５〜４４μｍのものが
良い。これは、粉末粒度が１０μｍ未満の場合には、製
造価格が高騰すると共に、溶射を受ける運動量が小さく
なって、溶射中、微粉末が気流に流され易くなり、反対
に、粉末粒度が５０μｍを越えると、溶射皮膜が粗くな
って実質的強度が落ちるからである。[0011] Then, on the surface subjected to the surface roughening treatment,
Using the high-speed flame spraying machine 21, the first to third film forming portions 22a to 22c and 23a to 23c are respectively applied to the first to third film forming portions.
Are formed. The high-speed flame spraying uses kerosene (kerosene) as a fuel and combines it with oxygen to form a high-speed gas jet of 2500 to 2700 m / sec at a high temperature of 2400 to 2700 ° C. The fusible alloy powder is loaded and melted, and a sprayed material is sprayed onto the surface at a high speed (for example, about 750 m / sec) to solidify and join.
At this time, the cermet fine powder or the self-fluxing alloy powder has a powder particle size of 10 to 50 μm, preferably 15 to 44 μm. This is because, when the powder particle size is less than 10 μm, the manufacturing cost rises, and the momentum to be sprayed becomes small, so that the fine powder is easily flown into the air current during the spraying. If it exceeds, the thermal spray coating becomes coarse and the substantial strength is reduced.
【００１２】以上のように本実施の形態に係る連続鋳造
用鋳型Ａによれば、長片Ｄ１、Ｄ２、短片Ｅ１、Ｅ２の
上部から下部にかけて、順次、金属素地部１０、１４、
Ｎｉ・Ｃｒ系の自溶性合金を高速火炎溶射してなる第１
の溶射皮膜部１１、１５、Ｃｒ3 Ｃ2 ／Ｎｉ・Ｃｒ系サ
ーメット微粉末を高速火炎溶射してなる第２の溶射皮膜
部１２、１６、ＷＣ／Ｃｏ系サーメット微粉末を高速火
炎溶射してなる第３の溶射皮膜部１３、１７を形成した
ので、長片Ｄ１、Ｄ２、及び短片Ｅ１、Ｅ２の内面上部
より下部にかけて、高温の溶鋼等に対する耐熱性、耐熱
衝撃性、更に、鋳片に対する耐摩耗性を傾斜機能的に発
現させることができる。従って、高温の溶鋼に接触する
内面上部では、金属素地部１０、１４により従来のクラ
ックを防止することができると共に、内面上側では、自
溶性合金の第１の溶射皮膜部１１、１５によって、融点
の低い母材２２、２３の耐熱性、耐熱衝撃性を向上する
ことができ、一方、硬い鋳片と接触する内面下部では、
ＷＣ／Ｃｏ系の第３の溶射皮膜部１３、１７によって、
軟質な母材２２、２３を補強して、耐摩耗性を向上する
ことができる。もちろん、第１の溶射皮膜部１１、１５
と、第３の溶射皮膜部１３、１７の間には、両者の特性
を兼ね備えたＣｒ3 Ｃ2 ／Ｎｉ・Ｃｒ系の第２の溶射皮
膜部１２、１６が形成されているので、耐熱性と耐摩耗
性を同時に向上できる。As described above, according to the continuous casting mold A according to the present embodiment, the metal bases 10, 14 and 14 are sequentially arranged from the upper part to the lower part of the long pieces D1 and D2 and the short pieces E1 and E2.
No.1 formed by high-speed flame spraying of Ni-Cr based self-fluxing alloy
Of the thermal spray coating portions 11,15, Cr 3 C 2 / Ni · Cr -based second thermal spray coating portions 12, 16 which cermet fine powder obtained by high-speed flame spraying, the WC / Co cermet fine powder HVOF spraying Since the third thermal spray coating portions 13 and 17 are formed, the heat resistance to high-temperature molten steel and the like, the thermal shock resistance, and the heat resistance to cast slabs from the upper portion to the lower portion of the long pieces D1 and D2 and the short pieces E1 and E2 are reduced. Abrasion resistance can be exhibited in a gradient function. Therefore, in the upper part of the inner surface that comes into contact with the high-temperature molten steel, the conventional cracks can be prevented by the metal base parts 10 and 14, and on the upper part of the inner surface, the first thermal spray coating parts 11 and 15 of the self-fluxing alloy make the melting point of The heat resistance and thermal shock resistance of the base materials 22 and 23 having a low hardness can be improved.
WC / Co-based third thermal spray coating portions 13 and 17
The soft base materials 22 and 23 can be reinforced to improve wear resistance. Of course, the first sprayed coating portions 11, 15
Since the Cr 3 C 2 /Ni.Cr-based second thermal spray coating portions 12 and 16 having both characteristics are formed between the second thermal spray coating portions 13 and 17, heat resistance is improved. And wear resistance can be improved at the same time.
【００１３】（第２の実施の形態）続いて、図１、図
５、図６を参照して、本発明の第２の実施の形態に係る
連続鋳造用鋳型Ｂについて説明する。図示するように、
本実施の形態に係る連続鋳造用鋳型Ｂが、本発明の第１
の実施の形態と異なるのは、長片Ｆ１、Ｆ２、短片Ｇ
１、Ｇ２の母材２４、２５の内面に形成された第１〜第
３の溶射皮膜部１１〜１３、１５〜１７の下地として厚
さ０．２〜０．３ｍｍ程度のＮｉめっき１８、１９を形
成した点である。この場合、まず、母材２４、２５の第
１〜第３の皮膜形成部位２４ａ〜２４ｃ、２５ａ〜２５
ｃを、図示しない平面研削機で薄く（本実施の形態では
０．３〜２．３ｍｍ）削り取った後、この研削面に厚さ
０．２〜０．３ｍｍ程度のＮｉめっきを形成する。この
際、水１リットル中に、Ｓ−Ｎｉ（スルファミン酸Ｎ
ｉ）を３５０ｇ、塩化Ｎｉを５ｇ、硼酸を３０ｇ溶かし
た電解液を使用し、液温４５〜６０℃、電流密度は３Ａ
／ｄｍ2 で行う。(Second Embodiment) Next, a continuous casting mold B according to a second embodiment of the present invention will be described with reference to FIG. 1, FIG. 5, and FIG. As shown
The continuous casting mold B according to the present embodiment is the first casting mold according to the present invention.
Is different from the embodiment of the present invention in that the long pieces F1, F2, the short pieces G
1, Ni plating 18 and 19 having a thickness of about 0.2 to 0.3 mm as a base for the first to third thermal spray coating portions 11 to 13 and 15 to 17 formed on the inner surfaces of the base materials 24 and 25 of G2. Is formed. In this case, first, the first to third film forming portions 24a to 24c and 25a to 25 of the base materials 24 and 25 are formed.
After c is thinly cut (0.3 to 2.3 mm in the present embodiment) with a surface grinder (not shown), Ni plating having a thickness of about 0.2 to 0.3 mm is formed on the ground surface. At this time, S-Ni (sulfamic acid N
i) 350 g of Ni chloride, 5 g of Ni chloride, and 30 g of boric acid were used in the electrolyte. The solution temperature was 45 to 60 ° C., and the current density was 3 A.
/ Dm 2 .
【００１４】そして、前記Ｎｉめっきを行った表面に、
高速火炎溶射機２１を用いて上述した条件により第１〜
第３の皮膜形成部位２４ａ〜２４ｃ、２５ａ〜２５ｃに
第１〜第３の溶射皮膜部１１〜１３、１５〜１７を形成
する。なお、ここでＮｉめっきの表面にＲｚ＝５０〜１
５０μｍの粗面化処理を行うのが好ましい。以上のよう
に本実施の形態に係る連続鋳造用鋳型Ｂによれば、本発
明の第１の実施の形態と同様の効果が得られるほか、第
１〜第３の溶射皮膜部１１〜１３、１５〜１７の下地と
してＮｉめっき１８、１９を形成したので、母材２４、
２５の酸化を防止して耐食性を向上できる。Then, on the Ni-plated surface,
Using the high-speed flame spraying machine 21,
The first to third thermal spray coating portions 11 to 13 and 15 to 17 are formed on the third coating forming portions 24a to 24c and 25a to 25c. Here, Rz = 50 to 1 on the surface of the Ni plating.
It is preferable to perform a 50 μm roughening treatment. As described above, according to the continuous casting mold B according to the present embodiment, in addition to obtaining the same effects as in the first embodiment of the present invention, the first to third thermal spray coating portions 11 to 13, Since the Ni platings 18 and 19 were formed as bases for the base materials 15 and 17,
25 can be prevented from being oxidized to improve corrosion resistance.
【００１５】[0015]
【実施例】次に、本発明の第２の実施の形態に係る連続
鋳造用鋳型Ｂの確認試験を行った結果について説明す
る。まず、図１、図５、図６に示すような長片Ｆ１（Ｆ
２）、短片Ｇ１（Ｇ２）を有する連続鋳造用鋳型Ｂを用
意する。なお、本実施例では、長片Ｆ１、短片Ｇ１の縦
幅（Ｌ1 ）はそれぞれ９００ｍｍ、長片Ｆ１の横幅（Ｌ
2 ）は２５００ｍｍ、短片Ｇ１の横幅（Ｌ3 ）は２５０
ｍｍ、長片Ｆ１、短片Ｇ１の厚み（ｔ1 、ｔ2 ）はそれ
ぞれ４５ｍｍとした。また、金属素地部１０、１４の縦
幅（Ｌ4 、Ｌ8 ）は３００ｍｍ、第１〜第３の溶射皮膜
部１１〜１３、１５〜１７の縦幅（Ｌ5 〜Ｌ7 、Ｌ9 〜
Ｌ11）はそれぞれ２００ｍｍ、各溶射皮膜部１１〜１
３、１５〜１７の厚み（ｔ3 、ｔ5 ）はそれぞれ０．６
ｍｍ、Ｎｉめっき１８、１９の厚み（ｔ4 、ｔ6 ）はそ
れぞれ１．０ｍｍとした。また、母材２４、２５には、
Ｃｕ−Ｃｒ−Ｚｒを使用した。また、高速火炎溶射機２
１の溶射距離Ｌ0 は１００〜３００ｍｍ、溶射角度θ0
は９０°とし、第１の溶射皮膜部１１、１５のＮｉ・Ｃ
ｒ系の自溶性合金の配合比は７０：３０（又は１００：
０）、第２の溶射皮膜部１２、１６のＣｒ3 Ｃ2 ／Ｎｉ
・Ｃｒ系サーメット微粉末の配合比は７５：２５、第３
の溶射皮膜部１３、１７のＷＣ／Ｃｏ系サーメット微粉
末の配合比は８８：１２とした。Next, the result of a confirmation test of the continuous casting mold B according to the second embodiment of the present invention will be described. First, as shown in FIGS. 1, 5, and 6, a long piece F1 (F
2) Prepare a continuous casting mold B having short pieces G1 (G2). In this embodiment, the long width (L 1 ) of the long piece F1 and the short piece G1 is 900 mm, respectively, and the horizontal width (L) of the long piece F1 is 900 mm.
2 ) is 2500 mm, and the width (L 3 ) of the short piece G1 is 250
mm, long piece F1, the thickness of the short piece G1 (t 1, t 2) was 45mm, respectively. The vertical width of the metal matrix portion 10,14 (L 4, L 8) is 300 mm, the first to third vertical width of the thermal spray coating portion 11~13,15~17 (L 5 ~L 7, L 9 ~
L 11 ) is 200 mm each, and each of the sprayed coating portions 11 to 1
The thicknesses (t 3 , t 5 ) of 3 , 15 to 17 are each 0.6.
mm, and the thicknesses (t 4 , t 6 ) of the Ni platings 18 and 19 were 1.0 mm, respectively. In addition, in the base materials 24 and 25,
Cu-Cr-Zr was used. In addition, high-speed flame spraying machine 2
1 of spraying distance L 0 is 100~300mm, spraying angle θ 0
Is 90 °, and Ni · C of the first sprayed coating portions 11 and 15 is
The compounding ratio of the r-based self-fluxing alloy is 70:30 (or 100:
0), Cr 3 C 2 / Ni of the second spray coating portions 12 and 16
-Cr-based cermet fine powder compounding ratio is 75:25, 3rd
Of the WC / Co-based cermet fine powder in the thermal spray coating portions 13 and 17 was 88:12.
【００１６】また、比較例として、特公昭６１−１５７
８２号公報に開示された連続鋳造用鋳型を準備する。な
お、長片、短片の縦幅は９００ｍｍ、長片の横幅は２５
００ｍｍ、短片の横幅は２５０ｍｍ、長片、短片の厚み
はそれぞれ４５ｍｍ、母材の内面全面に施したＮｉめっ
きの厚みは１．０ｍｍ、その上に形成されたＮｉ・Ｃｒ
系の自溶性合金の溶射皮膜部の厚みは０．６ｍｍとし
た。また、母材には、Ｃｕ−Ｃｒ−Ｚｒを使用した。な
お、溶射皮膜は通常の火炎溶射（フレーム速度約３００
ｍ／秒）を行って形成し、溶射距離は１５０ｍｍ、溶射
角度は９０°とし、Ｎｉ・Ｃｒ系の自溶性合金の配合比
は７０：１５とした。As a comparative example, Japanese Patent Publication No. 61-157
A mold for continuous casting disclosed in Japanese Patent Publication No. 82 is prepared. The length of the long piece and the short piece is 900 mm, and the width of the long piece is 25.
00 mm, the width of the short piece is 250 mm, the thickness of the long piece and the short piece are each 45 mm, the thickness of the Ni plating applied to the entire inner surface of the base material is 1.0 mm, and the Ni · Cr formed thereon
The thickness of the sprayed coating of the self-fluxing alloy was 0.6 mm. Cu-Cr-Zr was used as the base material. In addition, the thermal spray coating is a normal flame spray (frame speed of about 300
m / sec), the spraying distance was 150 mm, the spraying angle was 90 °, and the compounding ratio of the Ni.Cr-based self-fluxing alloy was 70:15.
【００１７】この結果、本発明の連続鋳造用鋳型Ｂで
は、母材銅板の変形に依る歪みはなく、また、比較例の
連続鋳造用鋳型に比較して、皮膜の密着強度が高く、し
かも、十分な耐摩耗性と剥離強度を有することがわかっ
た。As a result, in the continuous casting mold B of the present invention, there is no distortion due to the deformation of the base copper plate, and the adhesion strength of the film is higher than that of the continuous casting mold of the comparative example. It was found to have sufficient abrasion resistance and peel strength.
【００１８】以上、本発明の実施の形態を説明したが、
本発明は上記した実施の形態に限定されるものではな
く、要旨を逸脱しない条件の変更等は全て本発明の適用
範囲である。例えば、本発明の第１の実施の形態では、
母材２２、２３の銅板を露出した金属素地部１０、１４
としたが、図７、図８に示すように、母材３０、３１の
内面上部にＮｉ、Ｃｏ又はこれらの合金からなるめっき
を施した金属素地部２６、２７としてもよい。同様に、
本発明の第２の実施の形態では、母材２４、２５の銅板
を露出した金属素地部１０、１４としたが、図９、図１
０に示すように、母材３２、３３の内面上部にＮｉ、Ｃ
ｏ又はこれらの合金からなるめっきを施した金属素地部
２８、２９としてもよい。また、本発明の第２の実施の
形態では、第１〜第３の溶射皮膜部１１〜１３、１５〜
１７の下地として、Ｎｉめっき１８、１９を設けたが、
このＮｉめっき１８、１９の代わりに、Ｃｏめっき又は
Ｎｉ−Ｃｏ合金めっきを設けてもよい。また、本発明の
第１、第２の実施の形態では、湾曲型連続鋳造機に適用
される連続鋳造用鋳型Ａ、Ｂについて説明したが、垂直
型連続鋳造機に適用される連続鋳造用鋳型であってもよ
い。この場合、各長片の内面、及び、各短片の側面は平
面状とすればよい。また、本発明の第１、第２の実施の
形態では、幅固定の連続鋳造用鋳型Ａ、Ｂについて説明
したが、各長片の間で、短片をスライドさせる幅可変の
連続鋳造用鋳型であってもよい。The embodiment of the present invention has been described above.
The present invention is not limited to the above-described embodiment, and all changes in conditions that do not depart from the gist are within the scope of the present invention. For example, in the first embodiment of the present invention,
Metal base portions 10 and 14 exposing the copper plates of base materials 22 and 23
However, as shown in FIGS. 7 and 8, metal base portions 26 and 27 in which plating of Ni, Co, or an alloy thereof is plated on the inner surfaces of the base materials 30 and 31 may be used. Similarly,
According to the second embodiment of the present invention, the metal base portions 10 and 14 are obtained by exposing the copper plates of the base materials 24 and 25.
As shown in FIG. 0, Ni, C
o or the metal base portions 28 and 29 plated with an alloy thereof. In the second embodiment of the present invention, the first to third thermal spray coating portions 11 to 13 and 15 to 15 are provided.
Although Ni plating 18 and 19 were provided as a base of 17,
Instead of the Ni platings 18 and 19, Co plating or Ni-Co alloy plating may be provided. In the first and second embodiments of the present invention, the continuous casting molds A and B applied to the curved continuous casting machine have been described. However, the continuous casting mold applied to the vertical continuous casting machine. It may be. In this case, the inner surface of each long piece and the side surface of each short piece may be flat. In the first and second embodiments of the present invention, the continuous casting molds A and B having a fixed width have been described. However, a continuous casting mold having a variable width in which a short piece is slid between long pieces. There may be.
【００１９】[0019]
【発明の効果】以上の説明から明らかなように、請求項
１、２記載の連続鋳造用鋳型においては、該連続鋳造用
鋳型の内面下部より上部にかけて、鋳片に対する耐摩耗
性、更に、高温の溶鋼等に対する耐熱性、耐熱衝撃性を
傾斜機能的に発現させることができる。また、各溶射皮
膜部は、高速火炎溶射によって形成されているので、従
来の溶射後の熱処理、これに伴う歪み取り作業を不要に
できる。更に、鋳型の上部では、母材の銅板を露出する
ので、耐クラック性を向上することができる。特に、請
求項２記載の連続鋳造用鋳型においては、母材の酸化を
防止して、耐食性を向上できると共に、粗面化処理によ
って溶射皮膜の密着強度を向上でき、皮膜密着性を向上
して、熱処理や歪み取り作業の必要性を解消できる。As is apparent from the above description, in the continuous casting mold according to the first and second aspects, the abrasion resistance to the cast slab and the high temperature from the lower portion to the upper portion of the inner surface of the continuous casting mold are increased. Can exhibit heat resistance and thermal shock resistance to molten steel or the like with a gradient function. Further, since each of the thermal spray coating portions is formed by high-speed flame thermal spraying, the conventional heat treatment after thermal spraying and the work of removing distortion accompanying the thermal treatment can be omitted. Furthermore, since the base material copper plate is exposed at the upper part of the mold, crack resistance can be improved. In particular, in the continuous casting mold according to the second aspect, the oxidation of the base material can be prevented, the corrosion resistance can be improved, and the adhesion strength of the sprayed coating can be improved by the surface roughening treatment, and the coating adhesion can be improved. In addition, the necessity of heat treatment and strain removal work can be eliminated.
【図１】本発明の第１、第２の実施の形態に係る連続鋳
造用鋳型の斜視図である。FIG. 1 is a perspective view of a continuous casting mold according to first and second embodiments of the present invention.
【図２】（ａ）は本発明の第１の実施の形態に係る連続
鋳造用鋳型の長片の斜視図である。（ｂ）は図２（ａ）
の矢視Ｋ−Ｋ断面図である。FIG. 2 (a) is a perspective view of a long piece of a continuous casting mold according to the first embodiment of the present invention. (B) is FIG.
5 is a sectional view taken along the line KK of FIG.
【図３】（ａ）は同連続鋳造用鋳型の短片の平面図であ
る。（ｂ）は同短片の正面図である。（ｃ）は図３
（ｂ）の矢視Ｌ−Ｌ断面図である。FIG. 3A is a plan view of a short piece of the continuous casting mold. (B) is a front view of the short piece. (C) is FIG.
It is an LL sectional view taken along the arrow of (b).
【図４】溶射状況の説明図である。FIG. 4 is an explanatory diagram of a spraying state.
【図５】（ａ）は本発明の第２の実施の形態に係る連続
鋳造用鋳型の長片の斜視図である。（ｂ）は図５（ａ）
の矢視Ｍ−Ｍ断面図である。FIG. 5 (a) is a perspective view of a long piece of a continuous casting mold according to a second embodiment of the present invention. FIG. 5 (a) shows the state of FIG.
FIG. 3 is a sectional view taken along line MM of FIG.
【図６】（ａ）は同連続鋳造用鋳型の短片の平面図であ
る。（ｂ）は同短片の正面図である。（ｃ）は図６
（ｂ）の矢視Ｎ−Ｎ断面図である。FIG. 6A is a plan view of a short piece of the continuous casting mold. (B) is a front view of the short piece. (C) is FIG.
It is arrow NN sectional drawing of (b).
【図７】（ａ）は本発明の第１の実施の形態に係る連続
鋳造用鋳型の長片の変形例の斜視図である。（ｂ）は図
７（ａ）の矢視Ｐ−Ｐ断面図である。FIG. 7A is a perspective view of a modified example of the long piece of the continuous casting mold according to the first embodiment of the present invention. FIG. 8B is a cross-sectional view taken along the line P-P in FIG.
【図８】（ａ）は同連続鋳造用鋳型の短片の平面図であ
る。（ｂ）は同短片の正面図である。（ｃ）は図８
（ｂ）の矢視Ｑ−Ｑ断面図である。FIG. 8A is a plan view of a short piece of the continuous casting mold. (B) is a front view of the short piece. (C) is FIG.
It is an arrow QQ sectional view of (b).
【図９】（ａ）は本発明の第２の実施の形態に係る連続
鋳造用鋳型の長片の変形例の斜視図である。（ｂ）は図
９（ａ）の矢視Ｒ−Ｒ断面図である。FIG. 9A is a perspective view of a modified example of the long piece of the continuous casting mold according to the second embodiment of the present invention. FIG. 10B is a sectional view taken along line RR of FIG. 9A.
【図１０】（ａ）は同連続鋳造用鋳型の短片の平面図で
ある。（ｂ）は同短片の正面図である。（ｃ）は図１０
（ｂ）の矢視Ｓ−Ｓ断面図である。FIG. 10 (a) is a plan view of a short piece of the continuous casting mold. (B) is a front view of the short piece. (C) is FIG.
It is arrow SS sectional drawing of (b).
Ａ 連続鋳造用鋳型 Ｂ 連続鋳造用
鋳型 Ｄ１ 長片 Ｄ２ 長片 Ｅ１ 短片 Ｅ２ 短片 Ｆ１ 長片 Ｆ２ 長片 Ｇ１ 短片 Ｇ２ 短片 Ｌ0 溶射距離 Ｌ1 縦幅 Ｌ2 横幅 Ｌ3 横幅 Ｌ4 縦幅 Ｌ5 縦幅 Ｌ6 縦幅 Ｌ7 縦幅 Ｌ8 縦幅 Ｌ9 縦幅 Ｌ10 縦幅 Ｌ11 縦幅 ｔ1 厚み ｔ2 厚み ｔ3 厚み ｔ4 厚み ｔ5 厚み ｔ6 厚み θ0 溶射角度 １０ 金属素地
部 １１ 第１の溶射皮膜部 １２ 第２の溶
射皮膜部 １３ 第３の溶射皮膜部 １４ 金属素地
部 １５ 第１の溶射皮膜部 １６ 第２の溶
射皮膜部 １７ 第３の溶射皮膜部 １８ Ｎｉめっ
き １９ Ｎｉめっき ２１ 高速火炎
溶射機 ２２ 母材 ２２ａ 第１の
皮膜形成部位 ２２ｂ 第２の皮膜形成部位 ２２ｃ 第３の
皮膜形成部位 ２３ 母材 ２３ａ 第１の
皮膜形成部位 ２３ｂ 第２の皮膜形成部位 ２３ｃ 第３の
皮膜形成部位 ２４ 母材 ２４ａ 第１の
皮膜形成部位 ２４ｂ 第２の皮膜形成部位 ２４ｃ 第３の
皮膜形成部位 ２５ 母材 ２５ａ 第１の
皮膜形成部位 ２５ｂ 第２の皮膜形成部位 ２５ｃ 第３の
皮膜形成部位 ２６ 金属素地部 ２７ 金属素地
部 ２８ 金属素地部 ２９ 金属素地
部 ３０ 母材 ３１ 母材 ３２ 母材 ３３ 母材A continuous casting mold B continuous casting mold D1 long piece D2 length pieces E1 short piece E2 short piece F1 length piece F2 length piece G1 short piece G2 short piece L 0 spraying distance L 1 vertical width L 2 width L 3 lateral width L 4 longitudinal width L 5 vertical width L 6 longitudinal width L 7 longitudinal width L 8 longitudinal width L 9 longitudinal width L 10 longitudinal width L 11 longitudinal width t 1 thickness t 2 thickness t 3 thickness t 4 thickness t 5 thickness t 6 thickness theta 0 sprayed angle 10 metal Base part 11 First sprayed coating part 12 Second sprayed coating part 13 Third sprayed coating part 14 Metal base part 15 First sprayed coating part 16 Second sprayed coating part 17 Third sprayed coating part 18 Ni Plating 19 Ni plating 21 High-speed flame spraying machine 22 Base material 22a First film forming part 22b Second film forming part 22c Third film forming part 23 Base material 23a First film forming part 23b Second film forming part 23c Third film formation site 24 Base metal 24a 1 film forming portion 24b second film forming portion 24c third film forming portion 25 base material 25a first film forming portion 25b second film forming portion 25c third film forming portion 26 metal base portion 27 metal base Part 28 Metal base part 29 Metal base part 30 Base material 31 Base material 32 Base material 33 Base material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 梅山 祐登 福岡県北九州市小倉南区新曽根５番１号 三島光産株式会社機工事業本部内 (72)発明者 山本 圭祐 福岡県北九州市小倉南区新曽根５番１号 三島光産株式会社機工事業本部内 (72)発明者 岩井 裕時 福岡県北九州市小倉南区新曽根５番１号 三島光産株式会社機工事業本部内 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yuto Umeyama 5-1 Nisone, Kokura Minami-ku, Kitakyushu-shi, Fukuoka Prefecture Inside the Machine Works Division of Mishima Kosan Co., Ltd. (72) Inventor Keisuke Yamamoto Kokura Minami, Kitakyushu-shi, Fukuoka 5-1 Nisone-ku, Mishima Kosan Co., Ltd. Machinery Business Headquarters (72) Inventor Hiroki Iwai 5-1 Nisone, Kokura-Minami-ku, Kitakyushu-shi, Fukuoka Mishima Kosan Co., Ltd.
Claims (2)
鋳造用鋳型において、 鋳型内面に、上部から下部にかけて順次、銅母材又はそ
の上にＮｉめっきを施した金属素地部、Ｎｉ・Ｃｒ系の
自溶性合金が高速火炎溶射された第１の溶射皮膜部、Ｃ
ｒ3 Ｃ2 ／Ｎｉ・Ｃｒ系サーメット微粉末が高速火炎溶
射された第２の溶射皮膜部、及び、ＷＣ／Ｃｏ系サーメ
ット微粉末が高速火炎溶射された第３の溶射皮膜部が、
それぞれ形成されていることを特徴とする連続鋳造用鋳
型。1. A continuous casting mold used for continuous casting of molten steel, comprising: a copper base material or a Ni-Cr-based metal base on a copper base material or Ni plating on the inner surface of the mold sequentially from the upper part to the lower part. Spray coating of a self-fluxing alloy of high velocity flame sprayed, C
The second thermal spray coating portion where the r 3 C 2 / Ni · Cr cermet fine powder is subjected to high-speed flame spraying, and the third thermal spray coating portion where the WC / Co-based cermet fine powder is high-speed flame sprayed,
A continuous casting mold characterized by being formed respectively.
て、Ｎｉ、Ｃｏ又はこれらの合金からなる下地めっきが
なされて、しかも、その表面には、Ｒｚ＝５０〜１５０
μｍの粗面化処理がなされている請求項１記載の連続鋳
造用鋳型。2. An undercoat made of Ni, Co or an alloy thereof is provided as an undercoat of the first to third thermal spray coatings, and the surface thereof has Rz = 50 to 150.
2. The continuous casting mold according to claim 1, which has been subjected to a surface roughening treatment of μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5416797A JPH10230348A (en) | 1997-02-20 | 1997-02-20 | Mold for continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5416797A JPH10230348A (en) | 1997-02-20 | 1997-02-20 | Mold for continuous casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10230348A true JPH10230348A (en) | 1998-09-02 |
Family
ID=12962998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5416797A Withdrawn JPH10230348A (en) | 1997-02-20 | 1997-02-20 | Mold for continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10230348A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1520643A1 (en) | 2003-10-01 | 2005-04-06 | KM Europa Metal Aktiengesellschaft | Method for coating a mould body used in a continuous casting machine and mould body thus obtained |
| KR101942932B1 (en) * | 2017-07-20 | 2019-04-17 | 주식회사 포스코 | Mold and method for manufacturing the same |
-
1997
- 1997-02-20 JP JP5416797A patent/JPH10230348A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1520643A1 (en) | 2003-10-01 | 2005-04-06 | KM Europa Metal Aktiengesellschaft | Method for coating a mould body used in a continuous casting machine and mould body thus obtained |
| KR101942932B1 (en) * | 2017-07-20 | 2019-04-17 | 주식회사 포스코 | Mold and method for manufacturing the same |
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| Date | Code | Title | Description |
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| A300 | Withdrawal of application because of no request for examination |
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