JPS61154751A - Roller for conveying high-temperature billet - Google Patents
Roller for conveying high-temperature billetInfo
- Publication number
- JPS61154751A JPS61154751A JP28136084A JP28136084A JPS61154751A JP S61154751 A JPS61154751 A JP S61154751A JP 28136084 A JP28136084 A JP 28136084A JP 28136084 A JP28136084 A JP 28136084A JP S61154751 A JPS61154751 A JP S61154751A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- roller
- resistant
- coating
- thick film
- 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
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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
連続鋳造機における鋳片サポートロール、ガイドロール
、ベンディングロールおよびビンチロールなど、また熱
間圧延機のテーブルローラなど、高温鋼片との接触下に
稼動するロールまたはローラの類を、搬送ローラと一括
総称することとして、それによる高温鋼片の搬送中にお
ける抜熱防止を有利に実現することができ、しかも耐久
性にもすぐれるこの種の搬送用ローラについての開発成
果を以下に述べる。[Detailed Description of the Invention] (Industrial Application Field) In contact with high-temperature steel slabs, such as slab support rolls, guide rolls, bending rolls, and vinyl rolls in continuous casting machines, and table rollers in hot rolling mills, The rolls or rollers that operate during this period are collectively referred to as conveyance rollers.This type of roller can advantageously prevent heat loss during conveyance of high-temperature steel billets, and is also highly durable. The development results for the conveyor rollers are described below.
（従来の技術）
９０００〜１２００°Ｃの高温鋼片（連続鋳片を含む以
下同じ）を搬送するローラの耐熱性増強のため、セラミ
ックス製四−ラまたはセラミックススリーブ覧−ラの検
討が行なわれて埴るが一般にじん性に乏しいので高負荷
を受けると容易に割れが入り過早破壊につながる。(Prior art) In order to increase the heat resistance of rollers that convey high-temperature steel slabs (including continuous slabs) at 9000 to 1200°C, studies have been conducted on ceramic four-layers or ceramic sleeve rollers. However, since it is generally poor in toughness, it easily cracks when subjected to high loads, leading to premature failure.
たとえば実開昭５８−１５２８５６号公報には耐熱合金
とセラミックスを組み合わせることを開示するがロール
芯部とセラミックススリーブまたはセラミックスブロッ
クが接合されていないためにやはり割れが入り容易に脱
落する。For example, Japanese Utility Model Application Publication No. 58-152856 discloses a combination of a heat-resistant alloy and ceramics, but since the roll core and the ceramic sleeve or ceramic block are not joined, they still crack and easily fall off.
また実開昭５８−１６６９５８号公報はセラミックチッ
プをロール外周面に固定したものであるが、セラミック
スは硬質ぜい性材料であるので、ボルトなどによりロー
ル軸芯に組み立てるため必要となる複雑なセラミックチ
ップの加工は非常に難しくもし可能であるとしても非常
に高価なものとなる。In addition, in Japanese Utility Model Application Publication No. 58-166958, ceramic chips are fixed to the outer circumferential surface of the roll, but since ceramic is a hard brittle material, complicated ceramic chips are required to be assembled to the roll axis with bolts, etc. Machining chips is extremely difficult and, if possible, extremely expensive.
（発明が解決しようとする間誼点）
加工が容易な被覆の手法によりセラミックス厚−被膜を
容易にロール表面に接合させ、しかもこの・厚被膜が使
用負荷に十分耐えうるものとすることがこの発明の目的
である。(Disadvantage that the invention seeks to solve) This is achieved by easily bonding a thick ceramic coating to the roll surface using a coating method that is easy to process, and also ensuring that this thick coating can sufficiently withstand the load of use. This is the object of the invention.
（問題点を解決するための手段）
この発明は鋼製軸芯の外周面に、耐熱断熱性材料の部分
被覆による厚皮膜をそなえる、高温鋼片の搬送用ローラ
である。ここに厚皮膜が高強度高じん性材料よりなる補
強材との複合構造になることが好適である。(Means for Solving the Problems) The present invention is a roller for conveying high-temperature steel billets, which has a thick coating partially coated with a heat-resistant and heat-insulating material on the outer peripheral surface of a steel shaft core. Here, it is preferable that the thick film has a composite structure with a reinforcing material made of a high strength and high toughness material.
ロール表面における部分被覆層による厚被膜の分割は該
皮膜に生じる応力低減に寄与し耐久性の増強に役立つ。The division of thick coatings by partial coating layers on the roll surface contributes to reducing stress generated in the coating and helps to increase durability.
耐熱、断熱性材料としては表１に示す酸化物を１種もし
くは２種以上組み合せたものまたはこれら酸化物を主成
分とし、残部が非酸化物セラミックスまたは金属からな
る複合材料がある。Examples of heat-resistant and heat-insulating materials include those made of one or a combination of two or more of the oxides shown in Table 1, or composite materials containing these oxides as a main component and the remainder being non-oxide ceramics or metals.
表 １ また被覆方法としては水プラズマ溶射法などがあるＯ 皮膜厚みは通常２〜２０■で適合する。Table 1 In addition, coating methods include water plasma spraying. The film thickness is usually 2 to 20 cm.
さて第１図にて鋼製軸芯１の表面に補強材としてＶアン
カー２またはスタッド２１を同図Ａ−Ａ断面のように、
たとえば溶接により固着した後、ロール外周全面にて耐
熱・断熱性に優れた材料の被覆を施すことにより、部分
被覆による厚皮膜８を形成する。■アンカー２、スタッ
ド２１は溶接以外に、埋め込みボルトの形で使用できる
のは云うまでもない。Now, in Fig. 1, a V anchor 2 or a stud 21 is installed as a reinforcing material on the surface of the steel shaft core 1, as shown in the A-A cross section of the same figure.
For example, after being fixed by welding, the entire outer periphery of the roll is coated with a material having excellent heat resistance and heat insulation properties, thereby forming a thick film 8 by partially covering the roll. ■It goes without saying that the anchor 2 and stud 21 can be used in the form of embedded bolts in addition to welding.
第２図は格子状の開口をもつかご形の補強材２′を鋼製
軸芯のまわりに取りつけた後同様な部分被覆により厚皮
膜８を形成した例であり、第８図〜５図は補強材として
鋼製軸芯の外周上にそれぞれスパイラル、軸心と平行ま
たは直角の向きのフィン２′を取り付けた後同様な部分
被覆により厚皮膜８を形成した例である。Figure 2 shows an example in which a basket-shaped reinforcing member 2' with grid-like openings is attached around a steel shaft core, and then a thick coating 8 is formed by similar partial covering. This is an example in which spiral fins 2' oriented parallel or perpendicular to the shaft center are attached to the outer periphery of a steel shaft core as reinforcing materials, and then a thick coating 8 is formed by similar partial covering.
また第６ｐＸＪ１第７図に示すように、鋼製軸芯ｌの外
周に予め溝４の加工を行なった後、この溝の内部を満た
す部分被覆によって鋼製軸芯１の外周突起６または***
６が補強材を兼ねるものであってもよい。Further, as shown in FIG. 6p may also serve as a reinforcing material.
（作用）
このようにして、ロール外周面が補強材と部分被覆によ
る厚皮膜で構成され、ここに補強材は一般に鋼製とくに
、厚皮膜に比しより高強度、高じん性のものであれば、
これにより、ロール外周面に発生する応力が分散される
とともに、その応力の多くは補強材が受けるので厚皮膜
８内の応力が゛′低減される。(Function) In this way, the outer circumferential surface of the roll is composed of a reinforcing material and a thick coating formed by partial coating, and the reinforcing material is generally made of steel, especially one with higher strength and toughness than the thick coating. Ba,
As a result, the stress generated on the outer circumferential surface of the roll is dispersed, and most of the stress is received by the reinforcing material, so that the stress within the thick coating 8 is reduced.
なお鋼製軸芯ｌの外面に対し第２図、第４図に示した補
強材２＃ 、 ２＃を取外し可能に取りつけ、部分被覆
による厚皮膜８を形成した後に取外し、部分被覆による
厚皮膜８の区分を独立に分割して拘束を受けないように
すると各区分厚皮膜ａ内に発生する応力はより小さくし
得る。In addition, the reinforcing materials 2# and 2# shown in FIGS. 2 and 4 are removably attached to the outer surface of the steel shaft core l, and removed after forming a thick coating 8 due to partial coating. By dividing the 8 sections independently so that they are not constrained, the stress generated in each section thick film a can be made smaller.
何れの場合も鋼製軸芯１と厚皮膜８との界面の接着力を
上げるためにＮｉ０ｒ ｔ ＮｉＡｌ、 Ｎｉ（：ｊｏ
ＣｒＡ／ＹなどのＮ１基合金、ＣＯ基合金を下地結合層
として予備被覆した後すでにのべたような耐熱断熱性に
優れた材料の被覆を行ってもよい。In either case, Ni0r t NiAl, Ni(:jo
After preliminary coating with an N1-based alloy such as CrA/Y or a CO-based alloy as a base bonding layer, coating with a material having excellent heat resistance and heat insulation properties as described above may be performed.
（実施例）
スラブ連鋳機の搬送ロールとしてこの発明のローラを適
用し従来のものと比較した結果を表２に示す。(Example) Table 2 shows the results of using the roller of the present invention as a conveyor roll of a continuous slab casting machine and comparing it with a conventional roller.
従来の屋１のセラミックススリーブロールは使用して間
もなく割損し破壊した。屋２のＺｒＯ，全面被覆をした
四−ルは１２か月の使用で割れがみられた。この発明に
よるＡ３〜７のロールは１８か月の使用においても割れ
、はく離は見られず、特にＡ８の鋼製軸芯に溝加工を施
してから被覆したもの、＆６の鋼製軸芯上に格子状の補
強を取りつけた上で被覆したもの、および屋７の被覆層
を分割したものは、いずれも２４か月の使用において割
れはく離は見られなかった。The conventional ceramic sleeve roll of Ya 1 broke and broke shortly after it was used. The ZrO, fully coated four-wheel in case 2 showed cracks after 12 months of use. The rolls of A3 to 7 according to the present invention show no cracking or peeling even after 18 months of use, and especially the rolls of A8 which have been grooved and coated on the steel shaft, and No cracking or peeling was observed after 24 months of use in both the case where the lattice-like reinforcement was attached and then covered, and the case where the coating layer of roof 7 was divided.
以上の各ローラは述続鋳造機のガイドロール熱間圧延の
テーブルローラにも使用できるのはいうまでもない。It goes without saying that each of the above-mentioned rollers can also be used as a table roller for guide roll hot rolling of a predicate casting machine.
（発明の効果）
耐熱断熱性材料の部分被覆によって厚皮膜に作用する高
温搬送鋼片による高負荷が軽減され割れ発生の心配なく
、長期の耐久寿命を、高温鋼片の搬送用ローラに保証す
ることができる。(Effects of the invention) Partial coating with heat-resistant and heat-insulating material reduces the high load caused by the high-temperature conveying steel billet acting on the thick film, ensuring a long durable life for the roller for conveying the high-temperature steel billet without the risk of cracking. be able to.
第１図〜第９図はこの発明の各別実施例の正面図である
。
ｌ・・・軸芯 ２．２／ｌ ２’、 ２＝
・・・捕強材３・・・部分被覆による厚皮膜1 to 9 are front views of different embodiments of the present invention. l... Axial center 2.2/l 2', 2=
... Reinforcing material 3 ... Thick film due to partial coating
Claims (1)
よる厚皮膜をそなえる、高温鋼片の搬送用ローラ ２、厚皮膜が高強度高じん性材料よりなる補強材との複
合構造になる、１記載のローラ[Scope of Claims] 1. A roller for conveying high-temperature steel billets, which has a thick coating partially covered with a heat-resistant and heat-insulating material on the outer peripheral surface of a steel shaft 2. The thick coating is made of a high-strength, high-toughness material. The roller described in 1, which has a composite structure with a reinforcing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28136084A JPS61154751A (en) | 1984-12-27 | 1984-12-27 | Roller for conveying high-temperature billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28136084A JPS61154751A (en) | 1984-12-27 | 1984-12-27 | Roller for conveying high-temperature billet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61154751A true JPS61154751A (en) | 1986-07-14 |
Family
ID=17638022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28136084A Pending JPS61154751A (en) | 1984-12-27 | 1984-12-27 | Roller for conveying high-temperature billet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61154751A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04136609U (en) * | 1991-06-13 | 1992-12-18 | 本田技研工業株式会社 | straight edge drill |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5711661B2 (en) * | 1977-09-10 | 1982-03-05 | ||
| JPS5752557A (en) * | 1980-09-17 | 1982-03-29 | Nippon Steel Corp | Heat-resistant roll having dissimilar metallic area on surface of body part |
| JPS5758965A (en) * | 1980-09-26 | 1982-04-09 | Kubota Ltd | Cold insulating roll |
| JPS59218249A (en) * | 1983-05-25 | 1984-12-08 | Kubota Ltd | Roll for continuous casting |
-
1984
- 1984-12-27 JP JP28136084A patent/JPS61154751A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5711661B2 (en) * | 1977-09-10 | 1982-03-05 | ||
| JPS5752557A (en) * | 1980-09-17 | 1982-03-29 | Nippon Steel Corp | Heat-resistant roll having dissimilar metallic area on surface of body part |
| JPS5758965A (en) * | 1980-09-26 | 1982-04-09 | Kubota Ltd | Cold insulating roll |
| JPS59218249A (en) * | 1983-05-25 | 1984-12-08 | Kubota Ltd | Roll for continuous casting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04136609U (en) * | 1991-06-13 | 1992-12-18 | 本田技研工業株式会社 | straight edge drill |
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