JPH03118945A - Twin roll type continuous casting machine - Google Patents
Twin roll type continuous casting machineInfo
- Publication number
- JPH03118945A JPH03118945A JP25528289A JP25528289A JPH03118945A JP H03118945 A JPH03118945 A JP H03118945A JP 25528289 A JP25528289 A JP 25528289A JP 25528289 A JP25528289 A JP 25528289A JP H03118945 A JPH03118945 A JP H03118945A
- Authority
- JP
- Japan
- Prior art keywords
- rolls
- roll
- tungsten carbide
- continuous casting
- end faces
- 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
- 238000009749 continuous casting Methods 0.000 title claims description 15
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical class [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 7
- 229910045601 alloy Inorganic materials 0.000 abstract description 15
- 239000000956 alloy Substances 0.000 abstract description 15
- 238000007789 sealing Methods 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 229910052581 Si3N4 Inorganic materials 0.000 abstract description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 20
- 239000000919 ceramic Substances 0.000 description 11
- 229910052759 nickel Inorganic materials 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000007751 thermal spraying Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- 238000007747 plating Methods 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は溶湯より直接的に薄板を連続して鋳造する双ロ
ール式連続鋳造機に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a twin-roll continuous casting machine that continuously casts thin plates directly from molten metal.
互いに反対方向に回転する一対のロールを適切な間隙を
あけて平行に対向配置すると共に、ロールの両端面に２
つのサイド堰（サイドダム）を圧着して上記間隙上部に
ロールの外周面とサイド堰とによって溶湯湯溜り部を画
成し、この湯溜り部の中の溶湯を、回転するロールの外
周面で冷却しながら間隙を介して薄板を連続鋳造する、
所謂、双ロール式連鋳機が既に知られている。このよう
な連鋳機に関して、サイド堰は鋳造される薄板の幅方向
への湯漏れを防止するために鋳造時、上述したようにロ
ール端面に圧着されるようになっており、また、ロール
の冷却作用によって形成される溶湯中の凝固シェルとの
分離を可能ならしめるため、鋳造時は薄板の厚さ方向に
揺動するようになっている。従って、鋳造時、接触し合
うロール端面とサイド堰とは使用に伴って窄耗する傾向
にあり、現在ではサイド堰のロール端面に接触する部分
に例えば窒化ケイ素（Ｓ＋Ｊ−）や炭化ゲイ素（ＳｉＣ
＞等の高硬度微粒子を含むセラミック材を設け、接触部
の硬度を高くしてサイド堰の摩耗量を低減し、使用に伴
うサイド堰の交換インターバルを長期化しようとする試
みがなされている。A pair of rolls that rotate in opposite directions are arranged facing each other in parallel with an appropriate gap, and two rolls are placed on both end faces of the rolls.
Two side weirs (side dams) are crimped to define a molten metal pool in the upper part of the gap between the outer peripheral surface of the roll and the side dam, and the molten metal in this pool is cooled by the outer peripheral surface of the rotating roll. continuous casting of thin plates through gaps,
A so-called twin roll continuous casting machine is already known. Regarding such continuous casting machines, the side weirs are crimped to the end faces of the rolls during casting to prevent melt leakage in the width direction of the thin plate being cast. In order to enable separation from the solidified shell in the molten metal formed by the cooling action, it is designed to oscillate in the thickness direction of the thin plate during casting. Therefore, the end surfaces of the rolls and side weirs that come into contact with each other during casting tend to wear out with use, and at present, the portions of the side weirs that contact the end surfaces of the rolls are made of silicon nitride (S+J-) or silicon carbide (gain carbide), for example. SiC
Attempts have been made to reduce the amount of wear on the side weirs by increasing the hardness of the contact parts by providing ceramic materials containing high-hardness fine particles such as the above, and thereby prolonging the interval between replacement of the side weirs as they are used.
ところで上述したサイド堰に接触するロールの外面は、
端面も含めて従来よりニッケル（Ｎ１）等の低硬度材料
をメツキする構造となっているために、上述したように
サイド堰に高硬度のセラミック材を設けた場合、ロール
端面の摩耗量が増加し、ロール自体の交換インターバル
が短くなり、連鋳機のランニングコストが増加する傾向
にある。またセラミック中の高硬度粒子（Ｓｉ、Ｎ−、
ＳｉＣ等）によりロール端面が局部的に削られ、摩耗面
の凹凸を大きくして湯溜り部のシール性を損うことにな
り、鋳片鋳バリの発生や、ともするとロール、サイド堰
間より溶湯が洩出し製品品質へ悪影響を及ぼす９本発明
は斯る現状に鑑み、なされるものであって、ロール端面
の耐摩耗性を向上し、かつ、湯溜り部のシール性を高め
た双ロール式連続鋳造機を提供することを目的とする。By the way, the outer surface of the roll that comes into contact with the side weir mentioned above is
Since the roll end face is conventionally plated with a low hardness material such as nickel (N1), when a high hardness ceramic material is provided on the side weir as mentioned above, the amount of wear on the roll end face increases. However, the interval between replacing the roll itself becomes shorter, and the running cost of the continuous casting machine tends to increase. Also, high hardness particles in ceramics (Si, N-,
(SiC, etc.) causes local scraping of the roll end face, which increases the unevenness of the worn surface and impairs the sealing performance of the sump, resulting in the generation of slab burrs and the possibility of damage from the gap between the roll and side weir. Molten metal leaks and adversely affects product quality 9 The present invention has been made in view of the current situation, and is a twin roll that improves the abrasion resistance of the roll end face and improves the sealing performance of the molten metal pool. The purpose is to provide a type continuous casting machine.
上記目的のため、本発明によれば、互いに反対方向に回
転する一対のロールを平行に対向配置すると共に、上記
一対のロール両端面にサイド堰を圧着して、このロール
の外周面とサイド堰とにより溶湯の湯溜り部を画成し、
ロール間の間隙を経て、薄板を連続的に鋳造する双ロー
ル式連続鋳造機において、上記サイド堰の少なくとも上
記ロールに接触する部分にセラミック材を配設すると共
に、ロールの両端面にタングステンカーバイト系の耐摩
耗性材料を被覆せしめたことを特徴とする双ロール大連
続Ｓ！Ｊ造機が提供される。For the above purpose, according to the present invention, a pair of rolls that rotate in opposite directions are arranged facing each other in parallel, and a side weir is crimped to both end faces of the pair of rolls, so that the outer peripheral surface of the roll and the side weir are A pool of molten metal is defined by
In a twin-roll continuous casting machine that continuously casts a thin plate through a gap between the rolls, a ceramic material is provided at least in the portion of the side weir that contacts the rolls, and tungsten carbide is provided on both end surfaces of the rolls. Twin roll large continuous S! characterized by being coated with a wear-resistant material of the same type! J Machinery is provided.
一般にロール用金属として用いられる銅に対し、良好な
密着性を示すタングステンカーバイト系材料をロール端
面に被覆する。タングステンカーバイト（ＷＣ）はビッ
カース硬度Ｈｖが１０００〜１４００であり、従来ロー
ル端面にめっきされていたニッケルの硬さ（Ｈｖ ：
１６０〜２００）よりもはるかに高い値を示す。従って
サイド堰に設けたセラミック材に対する摩耗量は従来よ
りも格段に低減され、またセラミック中の高硬度粒子に
対してもタングステンカーバイトは耐摩耗性があり、端
面の凹凸度を低減でき、セラミック（Ｈｖ ： ２０〜
１６０）とタングステンカーバイトとの適当な硬度差に
よりセラミックはロール端面になじむ様に摩耗してシー
ル性を高めることができる。The end face of the roll is coated with a tungsten carbide material that exhibits good adhesion to copper, which is generally used as roll metal. Tungsten carbide (WC) has a Vickers hardness Hv of 1000 to 1400, and the hardness of nickel that was conventionally plated on the roll end surface (Hv:
160-200). Therefore, the amount of wear on the ceramic material installed in the side weir is significantly reduced compared to the conventional method, and tungsten carbide has wear resistance against the high hardness particles in the ceramic, making it possible to reduce the unevenness of the end surface. (Hv: 20~
160) and tungsten carbide, the ceramic can be worn to conform to the roll end face, improving sealing performance.
本発明の実施例を図面を参照して以下、説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明による双ロール式連続鋳造機１（以下、
連鎖機と呼ぶ）の要部斜視図を示しており、対向して配
置される一対のロール２及び３の両側方には各ロール２
．３の端面２ａ、２ｂ及び３ ａ 。FIG. 1 shows a twin-roll continuous casting machine 1 (hereinafter referred to as
This figure shows a perspective view of the main parts of a chain machine (referred to as a chaining machine), and there are rolls 2 on both sides of a pair of rolls 2 and 3 that are arranged facing each other.
．． 3 end faces 2a, 2b and 3a.
３ｂに接触するように扇状のサイド堰４及び５が設けら
れている。鋳造時、各ロール２．３は図中矢印ａ、ｂに
示すように互いに反対方向に回転駆動され、ロール２，
３の外周面２ｃ、３ｃとサイド堰４，５の側面４ａ 、
５ａとによって画成される空間には溶湯６が充填され、
所謂、湯溜り部が形成される。そして、ロール２，３の
冷却作用により溶湯６中に形成された凝固シェルはロー
ル２゜３間の間隙７より鋳片８となって下方に送り出さ
れることになる。Fan-shaped side weirs 4 and 5 are provided so as to contact 3b. During casting, each roll 2.3 is driven to rotate in opposite directions as shown by arrows a and b in the figure.
3's outer peripheral surfaces 2c, 3c and side dams 4, 5's side surfaces 4a,
The space defined by 5a is filled with molten metal 6,
A so-called hot water pool is formed. The solidified shell formed in the molten metal 6 by the cooling action of the rolls 2 and 3 becomes a slab 8 through the gap 7 between the rolls 2 and 3 and is sent downward.
第２図は上述したサイド堰４（又は５）のロール端面側
の外観を示しており、ロール端面２ａ。FIG. 2 shows the appearance of the roll end surface side of the above-mentioned side weir 4 (or 5), and shows the roll end surface 2a.
３ａと摺接する部位には例えば窒化ケイ素（Ｓｉ、Ｎ、
）や炭化ケイ素（ＳｉＣ）等の高硬度粒子を有する高耐
熱性、耐摩耗性のセラミックプレート９が略Ｖ字状に配
置される。またこのセラミックプレート９の周囲にはギ
ヤスタプルと呼ばれる耐火物１０がプレート９を囲むよ
うに設けられている。For example, silicon nitride (Si, N,
) and silicon carbide (SiC), etc., are arranged in a substantially V-shape. Further, a refractory 10 called a gear staple is provided around the ceramic plate 9 so as to surround the plate 9.
ところで一般に、ロールは溶湯凝固のためにその内部を
冷却水が通る構造（図示せず）となっており、ロール母
材としては熱伝導性の良い銅＜ＣＵ＞が用いられ、その
外周面には溶損防止のために二ッケル（Ｎｉ）めっきが
施されるようになっている。By the way, rolls generally have a structure (not shown) in which cooling water passes through the inside to solidify the molten metal, and the roll base material is made of copper (CU), which has good thermal conductivity. Nickel (Ni) plating is applied to prevent corrosion damage.
本発明によれば以上のように構成されるロールにおいて
、その両端面には、母材となる銅に対し密着性が良く、
かつ従来のニッケルめっきよりも硬い、タングステンカ
ーバイト（ＷＣ）系合金からなる耐摩耗性材料が被覆形
成される。According to the present invention, in the roll configured as described above, both end surfaces thereof have good adhesion to copper, which is the base material, and
A wear-resistant material made of a tungsten carbide (WC) alloy, which is harder than conventional nickel plating, is coated.
第３図は、タングステンカーバイト系合金層形成に関し
、好ましい実施例を示す部分的ロール断面図である。FIG. 3 is a partial cross-sectional view of a roll showing a preferred embodiment for forming a tungsten carbide alloy layer.
本図から明らかなように本実施例によれば、ロール２及
び３の端面２ａ、２ｂ及び３ａ 、３ｂには、まず母材
１１の上に、アンダコート層として、銅と一層密着性の
良いニッケル（Ｎｉ）ベースのき金１２（例えば８０％
Ｎｉ−２０％Ｃｒ）が、例えばＤガン溶射法により溶射
され、さらにその上にオーバコート層として上記合金１
２と密着性の良いタングステンカーバイト系合金１３（
例えば８７％ＷＣ５１３％Ｃｏ）が同様な手段により溶
射され、所謂二層構造の被覆層が形成される。即ち、本
実施例においては、ロール母材１１とタングステンカー
バイト系合金１３との熱膨張差に寄因して加熱・冷却の
繰り遅しにより被覆層に亀裂やはく離が発生する可能性
をさらに低減するため、母材１１となる銅、及びタング
ステンカーバイト系合金１３、双方に対してより密着性
の良いニッケル系合金１２を介在させるものである。尚
、図中１４はニッケルめっき層である。As is clear from the figure, according to this embodiment, the end surfaces 2a, 2b and 3a, 3b of the rolls 2 and 3 are coated with an undercoat layer, which has better adhesion to copper, on the base material 11. Nickel (Ni) based metal 12 (e.g. 80%
Ni-20%Cr) is thermally sprayed by, for example, a D gun thermal spraying method, and the above alloy 1 is further applied as an overcoat layer thereon.
2 and tungsten carbide alloy 13 (
For example, 87% WC, 513% Co) is thermally sprayed by similar means to form a so-called two-layered coating layer. That is, in this embodiment, the possibility of cracking or peeling occurring in the coating layer due to the delay in heating and cooling due to the difference in thermal expansion between the roll base material 11 and the tungsten carbide alloy 13 is further reduced. Therefore, the nickel-based alloy 12, which has better adhesion to both the copper serving as the base material 11 and the tungsten carbide-based alloy 13, is interposed. In addition, 14 in the figure is a nickel plating layer.
上述したＤガン溶射法は、アセチレンと酸素の混自ガス
の爆発によって生じるエネルギーを利用して被覆材料を
母材にコーティングする方法であって、機械的な投錨効
果により、他の溶射法にはない高接着強度、高密着度（
低気孔率）を得ることができる。またこの溶射法はその
爆発サイクルが例えば４回／ｓｅｃ、又は８回／ｓｅｃ
と、断続的であるため、他の溶射法に比べ母材の蓄熱量
を少なくすることができ、従って溶射による母材の熱変
形や組織変化を防止することができる。The above-mentioned D-gun thermal spraying method is a method of coating the base material with a coating material using the energy generated by the explosion of a mixed gas of acetylene and oxygen, and due to the mechanical anchoring effect, it is different from other thermal spraying methods. High adhesive strength, high adhesion (
low porosity). In addition, this thermal spraying method has an explosion cycle of, for example, 4 times/sec or 8 times/sec.
Since it is intermittent, the amount of heat stored in the base material can be reduced compared to other thermal spraying methods, and therefore thermal deformation and structural changes in the base material due to thermal spraying can be prevented.
本発明によるタングステンカーバイト系合金を設けたロ
ールの効果を確認するため、以下の試験を実施した。In order to confirm the effects of the roll provided with the tungsten carbide alloy according to the present invention, the following tests were conducted.
まず、サイド堰に使用されるセラミックブレート（成分
＝５２％ＢＮ、２７％＾ＩＮ、１７％ＦＣ＋５ｉＣ）と
、従来からの銅母材上にニッケルめっきを施したテスト
リング、並びに上述した銅母材上にニッケル系合金を介
在させタングステン系合金を溶射したテストリングを夫
々用意し、第４図に示す回転摩耗試験機に装着し、約７
，５００回転後の各テストリングの摩耗量を測定した。First, the ceramic plate used for the side weir (components = 52% BN, 27%^IN, 17% FC + 5iC), the conventional test ring with nickel plating on the copper base material, and the copper base material mentioned above. Test rings with a tungsten alloy coated on top with a nickel alloy interposed thereon were prepared, and the test rings were mounted on the rotary wear tester shown in Figure 4, and the test ring was heated to about 7
The wear amount of each test ring after 500 rotations was measured.
結果は、ニッケルめっきを施した従来材料からなるテス
トリングが１７０μＩＩＩの摩耗量を示したのに対し、
タングステンカーバイト系合金を被覆するテストリング
は７μ＋ｓの摩耗量を示し、タングステンカーバイト系
合金を設けたロールは従来よりも耐摩耗性が向上するこ
とが確認された。またタングステンカーバイト系合金を
被覆したテストリングと、セラミックプレートとの組み
合わせ摩耗試験においては双方の試料表面に頴著な凹凸
は認められなかった。これはタングステンカーバイトと
セラミックとの適度な硬度差によってセラミックがテス
トリングに対しなじむ様に摩耗し、またタングステンカ
ーバイトにおいてはセラミック中の高硬度微粒子（Ｓｉ
Ｃ）に対して耐摩耗性を示すことによるものであって、
この結果、サイド堰とロールとのシール性を格段に向上
することができる。また本試験で使用したセラミックを
サイド堰に設けた場合、セラミック中に含まれるＢＮ
（ボロンナイトライド硬度Ｈｖ＝２１〜２６）がＢＮ粉
としてロール端面とサイド堰の接触面に表れ、潤滑効果
を発揮し、以ってロール端面の長寿命化を図ることがで
きる。尚、上記試験に関連し、参考として、タングステ
ンカーバイトのテストリング同志を摩耗試験したが、被
膜め剥離現象が認められ、このことからも組み合わせと
しては適度な硬度差が必要であることが認められた。The results showed that the test ring made of conventional material with nickel plating showed a wear amount of 170 μIII.
The test ring coated with tungsten carbide alloy showed a wear amount of 7μ+s, and it was confirmed that the roll coated with tungsten carbide alloy has improved wear resistance than the conventional roll. In addition, in a combined wear test of a test ring coated with a tungsten carbide alloy and a ceramic plate, no significant unevenness was observed on the surfaces of both samples. This is due to the moderate hardness difference between tungsten carbide and ceramic, which causes the ceramic to wear to fit the test ring.
C) by exhibiting wear resistance against
As a result, the sealing performance between the side weir and the roll can be significantly improved. Furthermore, when the ceramic used in this test is installed in the side weir, the BN contained in the ceramic
(Boron nitride hardness Hv = 21 to 26) appears as BN powder on the contact surface between the roll end face and the side weir, exhibiting a lubricating effect, and thus making it possible to extend the life of the roll end face. In addition, in connection with the above test, as a reference, tungsten carbide test rings were subjected to wear tests, but peeling of the coating was observed, and from this it was recognized that an appropriate hardness difference is necessary for the combination. It was done.
以上本発明による双ロール弐連鋳機を、そのロール端面
構造に関し、母材との密着度をより高めた実施例に例を
とり説明したが、本発明は上述した実施例に限定されず
、直接、ロール端面にタングステンカーバイト系合金層
を被覆する構造でも良い。The twin-roll continuous casting machine according to the present invention has been described above using an example in which the roll end surface structure has a higher degree of adhesion to the base material, but the present invention is not limited to the above-mentioned embodiment. A structure in which a tungsten carbide alloy layer is directly coated on the end face of the roll may also be used.
以上説明したように本発明によれば、双ロール式連鋳機
において、サイド堰にセラミックを設け、ロール端面に
高硬度材料としてのタングステンカーバイト系の合金を
被覆形成することにより、総じてロール端面の耐京耗性
を向上することができ、鋳造時の溶湯シール性も安定化
し、鋳バリや溶湯洩れを低減することができる。As explained above, according to the present invention, in a twin roll continuous casting machine, by providing ceramic on the side weir and coating the roll end face with a tungsten carbide alloy as a high hardness material, the roll end face It is possible to improve the wear resistance of the steel, stabilize the sealing performance of the molten metal during casting, and reduce burrs and molten metal leakage.
また上記耐摩耗性の向上に伴い、ロール自体の耐久性も
向上し、ロールの交換インターバルが長くなり、ランニ
ングコストを低減することができる。Furthermore, along with the improvement in wear resistance, the durability of the roll itself is also improved, the interval between roll replacements becomes longer, and running costs can be reduced.
第１図は本発明による双ロール式連鋳機の要部斜視図；
第２図はサイド堰をロール端面配置側より見た外観図；
第３図は本発明によるロール端面部分を示す部分的ロー
ル断面図；第４図は回転摩耗試験機の外観図。
１・・・双ロール式連鋳機、
２．３・・・ロール、 ４，５・・・サイド堰、１
３・・・タングステンカーバイト合金から成る被覆層。FIG. 1 is a perspective view of the main parts of a twin-roll continuous casting machine according to the present invention;
Figure 2 is an external view of the side weir viewed from the side where the roll end surface is placed;
FIG. 3 is a partial cross-sectional view of the roll showing the end face portion of the roll according to the present invention; FIG. 4 is an external view of the rotary abrasion tester. 1... Twin roll continuous casting machine, 2.3... Roll, 4, 5... Side weir, 1
3...Covering layer made of tungsten carbide alloy.
Claims (1)
向配置すると共に、上記一対のロールの両端面にサイド
堰を圧着して、このロールの外周面とサイド堰とにより
溶湯の湯溜り部を画成し、ロール間の間隙を経て薄板を
連続的に鋳造する双ロール式連続鋳造機において、 上記サイド堰の少なくとも上記ロールに接触する部分に
セラミック材を配設すると共に、ロールの両端面にタン
グステンカーバイト系の耐摩耗性材料を被覆せしめたこ
とを特徴とする双ロール式連続鋳造機。[Claims] 1. A pair of rolls rotating in opposite directions are arranged in parallel and facing each other, and side weirs are crimped to both end faces of the pair of rolls, so that the outer circumferential surface of the rolls and the side weir are connected to each other. In a twin-roll continuous casting machine that defines a pool of molten metal and continuously casts a thin plate through a gap between the rolls, a ceramic material is disposed at least in a portion of the side weir that contacts the rolls, and , a twin-roll continuous casting machine characterized by having both end surfaces of the rolls coated with a tungsten carbide-based wear-resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25528289A JPH03118945A (en) | 1989-10-02 | 1989-10-02 | Twin roll type continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25528289A JPH03118945A (en) | 1989-10-02 | 1989-10-02 | Twin roll type continuous casting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03118945A true JPH03118945A (en) | 1991-05-21 |
Family
ID=17276591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25528289A Pending JPH03118945A (en) | 1989-10-02 | 1989-10-02 | Twin roll type continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03118945A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998004369A1 (en) * | 1996-07-31 | 1998-02-05 | Acciai Speciali Terni S.P.A. | Plates with ceramic layers for apparatuses for the continuous casting of flat thin products and process for the manufacture thereof |
| KR100368281B1 (en) * | 1998-12-21 | 2003-03-17 | 주식회사 포스코 | An apparatus for preventing edge dam from wearing in twin roll type strip caster |
| WO2004033130A1 (en) * | 2002-10-04 | 2004-04-22 | Sms Demag Aktiengesellschaft | Sealing plate for the lateral sealing of a casting gap formed between two casting rollers of a strip casting machine |
| WO2009082075A1 (en) * | 2007-12-21 | 2009-07-02 | Posco | Casting roll of twin roll type strip caster and surface treatment method thereof |
| KR101010631B1 (en) * | 2008-07-10 | 2011-01-24 | 주식회사 포스코 | apparatus and method for roll in twin roll strip casting machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61286045A (en) * | 1985-06-12 | 1986-12-16 | Mitsubishi Heavy Ind Ltd | Continuous casting device |
| JPS6466049A (en) * | 1987-09-04 | 1989-03-13 | Kawasaki Steel Co | Apparatus for producing rapidly cooled metal strip |
| JPH0246951A (en) * | 1988-08-08 | 1990-02-16 | Nisshin Steel Co Ltd | Strip continuous casting apparatus and operating method thereof |
-
1989
- 1989-10-02 JP JP25528289A patent/JPH03118945A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61286045A (en) * | 1985-06-12 | 1986-12-16 | Mitsubishi Heavy Ind Ltd | Continuous casting device |
| JPS6466049A (en) * | 1987-09-04 | 1989-03-13 | Kawasaki Steel Co | Apparatus for producing rapidly cooled metal strip |
| JPH0246951A (en) * | 1988-08-08 | 1990-02-16 | Nisshin Steel Co Ltd | Strip continuous casting apparatus and operating method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998004369A1 (en) * | 1996-07-31 | 1998-02-05 | Acciai Speciali Terni S.P.A. | Plates with ceramic layers for apparatuses for the continuous casting of flat thin products and process for the manufacture thereof |
| KR100368281B1 (en) * | 1998-12-21 | 2003-03-17 | 주식회사 포스코 | An apparatus for preventing edge dam from wearing in twin roll type strip caster |
| WO2004033130A1 (en) * | 2002-10-04 | 2004-04-22 | Sms Demag Aktiengesellschaft | Sealing plate for the lateral sealing of a casting gap formed between two casting rollers of a strip casting machine |
| WO2009082075A1 (en) * | 2007-12-21 | 2009-07-02 | Posco | Casting roll of twin roll type strip caster and surface treatment method thereof |
| KR100944438B1 (en) * | 2007-12-21 | 2010-02-25 | 주식회사 포스코 | Casting roll and thereof surface treatment method of twin type strip caster |
| JP2011506098A (en) * | 2007-12-21 | 2011-03-03 | ポスコ | Cast roll of twin roll type thin plate casting machine and surface treatment method thereof |
| AU2008341374B2 (en) * | 2007-12-21 | 2011-08-04 | Posco | Casting roll of twin roll type strip caster and surface treatment method thereof |
| US8302665B2 (en) | 2007-12-21 | 2012-11-06 | Posco | Casting roll of twin roll type strip caster and surface treatment method thereof |
| KR101010631B1 (en) * | 2008-07-10 | 2011-01-24 | 주식회사 포스코 | apparatus and method for roll in twin roll strip casting machine |
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